Reputable Home Services In West Allis | Thielmann Heating And Cooling

Reputable Home Services in West Allis

For over 90 years, Thielmann Heating, Cooling, and Plumbing has been the go-to provider for dependable home solutions in the Southeastern Wisconsin area. Our team combines expertise and personalized care to ensure your living or working spaces are efficient, secure, and comfortable. Whether it’s installing West Allis HVAC systems or addressing plumbing challenges, we’re committed to delivering seamless, high-quality service every time. For superior home services, call (262) 299-6197 or contact our team online.

Advanced HVAC Solutions for West Allis Homes

HVAC systems

The diverse weather patterns of West Allis make having a dependable HVAC system an absolute necessity to ensure year-round comfort. At Thielmann Heating, Cooling, and Plumbing, we deliver innovative heating and cooling solutions tailored to meet the unique demands of your home or business:

West Allis Heating Services

Cooling Services in West Allis

  • Central Air Conditioning: Modern AC systems provide consistent, efficient cooling tailored to your home’s specific needs. We handle installations, replacements, and repairs.
  • Ductless Mini-Splits: Perfect for homes without ductwork, mini-splits offer targeted cooling solutions with exceptional energy efficiency.
  • Zoned Cooling Systems: Customize temperatures in different areas of your home for personalized comfort. This solution allows you to save energy by only cooling occupied spaces.
  • AC Maintenance Plans: Extend your system’s lifespan and prevent costly breakdowns with regular tune-ups and inspections.

Plumbing Services Designed for Reliability

Thielmann - Wauwatosa - Village 3

Your home deserves a plumbing system that works effortlessly, day in and day out. That’s why Thielmann is here to provide dependable, high-quality plumbing services in West Allis tailored to your needs:

  1. Reliable Water Heater Services: Whether you prefer tank or tankless systems, our team ensures your water heater delivers hot water whenever you need it. We also offer energy-efficient upgrades that help you save money in the long run.
  2. Stylish Fixture Replacements: Revitalize your kitchen or bathroom with sleek, modern faucets, sinks, and showerheads. Not only do they look great, but they’re also built to improve water efficiency.
  3. Dependable Sump Pump Solutions: Avoid the stress of basement flooding with our expertly installed sump pumps. We also provide routine maintenance to keep your system ready for heavy rains.
  4. Efficient Garbage Disposal Services: A fully functional garbage disposal makes life easier. Count on us for repairs or installations that keep your kitchen running smoothly.
  5. Water Softener Installations: Hard water doesn’t have to be a headache. Our water softener solutions improve water quality, reduce scale buildup, and extend the lifespan of your appliances.

Indoor Air Quality Solutions

Take control of the air you breathe with our specialized West Allis indoor air quality services, designed to create a fresher and healthier home environment for your family:

Advanced Air Purifiers

Say goodbye to allergens, dust, and pollutants with state-of-the-art purification systems that seamlessly integrate with your HVAC setup for whole-home coverage.

Enhanced Ventilation

Experience better airflow and eliminate stale, trapped air with ventilation upgrades customized to suit your home’s needs. Improved ventilation means cleaner air and a more comfortable living space.

Precision Humidity Control

Achieve the perfect balance of humidity year-round with our professional humidifiers and dehumidifiers. These systems not only improve your comfort but also help protect your home from the effects of excessive moisture or dryness.

UV Technology for Cleaner Air

Protect your family from harmful bacteria, mold, and viruses with ultraviolet light systems integrated into your HVAC unit. These cutting-edge solutions ensure a safer, healthier indoor environment.

Commercial Services for West Allis Businesses

Thielmann is proud to partner with West Allis businesses, providing tailored solutions to ensure smooth operations and energy efficiency. Our commercial services include:

  1. High-Performance HVAC Systems: Keep your business comfortable with energy-efficient heating and cooling systems designed specifically for commercial spaces. We handle everything from installation to ongoing maintenance.
  2. Comprehensive Plumbing Solutions: From routine restroom repairs to complex piping projects, our commercial plumbing services are reliable and efficient, helping you avoid costly disruptions.

Contact Thielmann Today

Upgrade your home or business with expert services from Thielmann Heating, Cooling, and Plumbing. Contact us today to schedule a consultation or service appointment by calling (262) 299-6197. We’re proud to serve West Allis with solutions that enhance comfort, efficiency, and safety.

 

Recent Jobs and Reviews in West Allis, WI

Job Locations and Reviews

Completed installation of a comprehensive water treatment system in basement utility area, including a black water softener tank and Capital brand water filtration system with digital control head. Installed and connected white PVC piping configuration with shut-off valves, integrated copper supply lines to existing plumbing infrastructure, and established proper drainage connections using flexible corrugated hose. Mounted control components to concrete block wall, completed all electrical connections between units, verified proper system operation, and provided documentation for homeowner reference.
Completed installation of a comprehensive water treatment system in basement utility area, including a black water softener tank and Capital brand water filtration system with digital control head. Installed and connected white PVC piping configuration with shut-off valves, integrated copper supply lines to existing plumbing infrastructure, and established proper drainage connections using flexible corrugated hose. Mounted control components to concrete block wall, completed all electrical connections between units, verified proper system operation, and provided documentation for homeowner reference.
Kyle L.
Kyle L. Checked in
Completed installation of a comprehensive water treatment system in basement utility area, including a black water softener tank and Capital brand water filtration system with digital control head. Installed and connected white PVC piping configuration with shut-off valves, integrated copper supply lines to existing plumbing infrastructure, and established proper drainage connections using flexible corrugated hose. Mounted control components to concrete block wall, completed all electrical connections between units, verified proper system operation, and provided documentation for homeowner reference.
West Allis, WI 53214
Completed scheduled prepaid maintenance visit on residential air handler unit located in attic space. Performed comprehensive system inspection including examination of condensate drainage lines, refrigerant connections, and electrical components. Air handler unit found in operational condition with copper refrigerant lines showing normal patina consistent with system age. Verified condensate drain system functionality and confirmed all mechanical components secured properly. System operational at time of departure.
Completed scheduled prepaid maintenance visit on residential air handler unit located in attic space. Performed comprehensive system inspection including examination of condensate drainage lines, refrigerant connections, and electrical components. Air handler unit found in operational condition with copper refrigerant lines showing normal patina consistent with system age. Verified condensate drain system functionality and confirmed all mechanical components secured properly. System operational at time of departure.
Todd H.
Todd H. Checked in
Completed scheduled prepaid maintenance visit on residential air handler unit located in attic space. Performed comprehensive system inspection including examination of condensate drainage lines, refrigerant connections, and electrical components. Air handler unit found in operational condition with copper refrigerant lines showing normal patina consistent with system age. Verified condensate drain system functionality and confirmed all mechanical components secured properly. System operational at time of departure.
West Allis, WI 53227
Responded to no heat call on HVAC system less than 10 years old. Upon inspection, found loose or disconnected low-voltage wiring at the furnace control board that was preventing the heating system from receiving proper signal from the thermostat. Reconnected and secured all low-voltage wire connections at the control board terminals, verified proper wire placement according to manufacturer specifications, and tested system operation. Unit fired successfully and restored heat to the residence.
Responded to no heat call on HVAC system less than 10 years old. Upon inspection, found loose or disconnected low-voltage wiring at the furnace control board that was preventing the heating system from receiving proper signal from the thermostat. Reconnected and secured all low-voltage wire connections at the control board terminals, verified proper wire placement according to manufacturer specifications, and tested system operation. Unit fired successfully and restored heat to the residence.
Kevin P.
Kevin P. Checked in
Responded to no heat call on HVAC system less than 10 years old. Upon inspection, found loose or disconnected low-voltage wiring at the furnace control board that was preventing the heating system from receiving proper signal from the thermostat. Reconnected and secured all low-voltage wire connections at the control board terminals, verified proper wire placement according to manufacturer specifications, and tested system operation. Unit fired successfully and restored heat to the residence.
West Allis, WI 53214
Completed full HVAC system installation in residential basement, including new Patriot high-efficiency furnace and Lennox air handler with Thermann branded components. Installed copper refrigerant line sets with proper insulation, white PVC condensate drainage and venting system, and gray metal supply/return ductwork with plenum transitions. Mounted all equipment on protective base pads over concrete flooring with proper clearances for code compliance and future maintenance access. Ran electrical connections, secured all piping and ductwork, verified system startup, and tested all components for proper operation.
Completed full HVAC system installation in residential basement, including new Patriot high-efficiency furnace and Lennox air handler with Thermann branded components. Installed copper refrigerant line sets with proper insulation, white PVC condensate drainage and venting system, and gray metal supply/return ductwork with plenum transitions. Mounted all equipment on protective base pads over concrete flooring with proper clearances for code compliance and future maintenance access. Ran electrical connections, secured all piping and ductwork, verified system startup, and tested all components for proper operation.
CJ K.
CJ K. Checked in
Completed full HVAC system installation in residential basement, including new Patriot high-efficiency furnace and Lennox air handler with Thermann branded components. Installed copper refrigerant line sets with proper insulation, white PVC condensate drainage and venting system, and gray metal supply/return ductwork with plenum transitions. Mounted all equipment on protective base pads over concrete flooring with proper clearances for code compliance and future maintenance access. Ran electrical connections, secured all piping and ductwork, verified system startup, and tested all components for proper operation.
West Allis, WI 53227
Conducted comprehensive water service estimate inspection in basement utility area. Assessed aging infrastructure including corroded electrical junction box with significant rust deterioration, multiple water supply lines with brass fittings, and associated piping systems requiring evaluation for potential replacement or repair to ensure safe and reliable water service operation.
Conducted comprehensive water service estimate inspection in basement utility area. Assessed aging infrastructure including corroded electrical junction box with significant rust deterioration, multiple water supply lines with brass fittings, and associated piping systems requiring evaluation for potential replacement or repair to ensure safe and reliable water service operation.
Kyle L.
Kyle L. Checked in
Conducted comprehensive water service estimate inspection in basement utility area. Assessed aging infrastructure including corroded electrical junction box with significant rust deterioration, multiple water supply lines with brass fittings, and associated piping systems requiring evaluation for potential replacement or repair to ensure safe and reliable water service operation.
West Allis, WI 53214
Conducted comprehensive assessment of existing HVAC system and electrical infrastructure for complete system replacement. Evaluated current electrical panel capacity and circuit configuration to ensure compatibility with new equipment specifications. Documented existing ductwork system, including main supply trunk and structural support components, to determine modification requirements for optimal airflow and equipment integration with proposed replacement unit.
Conducted comprehensive assessment of existing HVAC system and electrical infrastructure for complete system replacement. Evaluated current electrical panel capacity and circuit configuration to ensure compatibility with new equipment specifications. Documented existing ductwork system, including main supply trunk and structural support components, to determine modification requirements for optimal airflow and equipment integration with proposed replacement unit.
Dave V.
Dave V. Checked in
Conducted comprehensive assessment of existing HVAC system and electrical infrastructure for complete system replacement. Evaluated current electrical panel capacity and circuit configuration to ensure compatibility with new equipment specifications. Documented existing ductwork system, including main supply trunk and structural support components, to determine modification requirements for optimal airflow and equipment integration with proposed replacement unit.
West Allis, WI 53227
# HVAC Service Report - No Heat Call

Responded to no heat call on Lennox Elite furnace system. Upon arrival, conducted visual inspection of unit and opened access panel to examine internal components. Found unit in non-operational state with no active heating cycle.

Performed thorough diagnostic inspection of electrical and mechanical systems within furnace compartment. Examined control board, wiring connections, capacitors, and associated components for signs of failure or malfunction. Noted significant discoloration and residue accumulation on lower metal shelf inside unit, indicating possible previous moisture intrusion or operational issues.

Inspected all wire bundles and electrical connections throughout the system, including multi-colored wiring harnesses secured with zip ties. Verified integrity of connections between control systems and operational components. Checked capacitors, motor assemblies, and related electrical devices for proper function and secure mounting.

Asses
# HVAC Service Report - No Heat Call

Responded to no heat call on Lennox Elite furnace system. Upon arrival, conducted visual inspection of unit and opened access panel to examine internal components. Found unit in non-operational state with no active heating cycle.

Performed thorough diagnostic inspection of electrical and mechanical systems within furnace compartment. Examined control board, wiring connections, capacitors, and associated components for signs of failure or malfunction. Noted significant discoloration and residue accumulation on lower metal shelf inside unit, indicating possible previous moisture intrusion or operational issues.

Inspected all wire bundles and electrical connections throughout the system, including multi-colored wiring harnesses secured with zip ties. Verified integrity of connections between control systems and operational components. Checked capacitors, motor assemblies, and related electrical devices for proper function and secure mounting.

Asses
Todd H.
Todd H. Checked in
# HVAC Service Report - No Heat Call Responded to no heat call on Lennox Elite furnace system. Upon arrival, conducted visual inspection of unit and opened access panel to examine internal components. Found unit in non-operational state with no active heating cycle. Performed thorough diagnostic inspection of electrical and mechanical systems within furnace compartment. Examined control board, wiring connections, capacitors, and associated components for signs of failure or malfunction. Noted significant discoloration and residue accumulation on lower metal shelf inside unit, indicating possible previous moisture intrusion or operational issues. Inspected all wire bundles and electrical connections throughout the system, including multi-colored wiring harnesses secured with zip ties. Verified integrity of connections between control systems and operational components. Checked capacitors, motor assemblies, and related electrical devices for proper function and secure mounting. Asses
West Allis, WI 53219
# HVAC Estimate - Replacement Summary

Conducted comprehensive assessment of existing hydronic heating system showing significant deterioration and corrosion throughout circulation pump assembly and associated piping infrastructure. Documentation revealed extensive mineral deposits, oxidation on copper and metal piping connections, and aging pump unit with compromised fittings requiring complete system replacement to ensure reliable heating operation and prevent potential failure.

# Detailed Assessment

The inspection identified a ceiling-mounted circulation pump assembly with multiple copper and metal pipe connections exhibiting advanced corrosion and mineral buildup. The pump unit displayed considerable weathering with darkened housing and deteriorated surface finish. Critical observations included white crusty deposits indicating long-term water seepage or condensation issues, oxidation on pipe joints and fittings, and visible wear on metal surfaces throughout the assembly.

The pi
# HVAC Estimate - Replacement Summary

Conducted comprehensive assessment of existing hydronic heating system showing significant deterioration and corrosion throughout circulation pump assembly and associated piping infrastructure. Documentation revealed extensive mineral deposits, oxidation on copper and metal piping connections, and aging pump unit with compromised fittings requiring complete system replacement to ensure reliable heating operation and prevent potential failure.

# Detailed Assessment

The inspection identified a ceiling-mounted circulation pump assembly with multiple copper and metal pipe connections exhibiting advanced corrosion and mineral buildup. The pump unit displayed considerable weathering with darkened housing and deteriorated surface finish. Critical observations included white crusty deposits indicating long-term water seepage or condensation issues, oxidation on pipe joints and fittings, and visible wear on metal surfaces throughout the assembly.

The pi
Michael Y.
Michael Y. Checked in
# HVAC Estimate - Replacement Summary Conducted comprehensive assessment of existing hydronic heating system showing significant deterioration and corrosion throughout circulation pump assembly and associated piping infrastructure. Documentation revealed extensive mineral deposits, oxidation on copper and metal piping connections, and aging pump unit with compromised fittings requiring complete system replacement to ensure reliable heating operation and prevent potential failure. # Detailed Assessment The inspection identified a ceiling-mounted circulation pump assembly with multiple copper and metal pipe connections exhibiting advanced corrosion and mineral buildup. The pump unit displayed considerable weathering with darkened housing and deteriorated surface finish. Critical observations included white crusty deposits indicating long-term water seepage or condensation issues, oxidation on pipe joints and fittings, and visible wear on metal surfaces throughout the assembly. The pi
West Allis, WI 53214
Installed and secured new metal HVAC ductwork in unfinished basement, including proper installation of a 90-degree elbow joint. All connections were sealed with metal tape to ensure system integrity and efficiency.
Installed and secured new metal HVAC ductwork in unfinished basement, including proper installation of a 90-degree elbow joint. All connections were sealed with metal tape to ensure system integrity and efficiency.
Derik B.
Derik B. Checked in
Installed and secured new metal HVAC ductwork in unfinished basement, including proper installation of a 90-degree elbow joint. All connections were sealed with metal tape to ensure system integrity and efficiency.
West Allis, WI 53227
West Allis, WI - Performed inspection of furnace heat exchanger through observation port. Confirmed proper flame pattern with characteristic orange glow and no signs of flame roll-out or carbon buildup. Visual inspection indicates normal operation with no immediate concerns regarding heat exchanger integrity.
Kevin P.
Kevin P. Checked in
Performed inspection of furnace heat exchanger through observation port. Confirmed proper flame pattern with characteristic orange glow and no signs of flame roll-out or carbon buildup. Visual inspection indicates normal operation with no immediate concerns regarding heat exchanger integrity.
West Allis, WI 53214
Performed scheduled HVAC maintenance service including electrical diagnostic testing with multimeter, checking system voltage readings (measured 50.89V), and verifying thermostat functionality. Confirmed Sensi thermostat was operating correctly in heating mode, maintaining 66°F ambient temperature with 40% humidity and temporary setpoint of 67°F. System is functioning within normal parameters with all connections secure.
Performed scheduled HVAC maintenance service including electrical diagnostic testing with multimeter, checking system voltage readings (measured 50.89V), and verifying thermostat functionality. Confirmed Sensi thermostat was operating correctly in heating mode, maintaining 66°F ambient temperature with 40% humidity and temporary setpoint of 67°F. System is functioning within normal parameters with all connections secure.
Makinze C.
Makinze C. Checked in
Performed scheduled HVAC maintenance service including electrical diagnostic testing with multimeter, checking system voltage readings (measured 50.89V), and verifying thermostat functionality. Confirmed Sensi thermostat was operating correctly in heating mode, maintaining 66°F ambient temperature with 40% humidity and temporary setpoint of 67°F. System is functioning within normal parameters with all connections secure.
West Allis, WI 53227
West Allis, WI - Performed inspection of Lennox boiler system in basement, noting proper operation of expansion tank, pressure gauge, and all connected copper piping with brass valves. Identified minor water staining on concrete floor beneath unit; confirmed no active leaks in system and all venting/ductwork secure and functioning correctly.
Donovan S.
Donovan S. Checked in
Performed inspection of Lennox boiler system in basement, noting proper operation of expansion tank, pressure gauge, and all connected copper piping with brass valves. Identified minor water staining on concrete floor beneath unit; confirmed no active leaks in system and all venting/ductwork secure and functioning correctly.
West Allis, WI 53219
Responded to no heat call for aging HVAC system (10+ years). Inspected control board and discovered faulty circuit connections causing system failure. Replaced damaged wiring harness on main control panel and verified proper operation of gas valve assembly, restoring heat functionality to the system.
Responded to no heat call for aging HVAC system (10+ years). Inspected control board and discovered faulty circuit connections causing system failure. Replaced damaged wiring harness on main control panel and verified proper operation of gas valve assembly, restoring heat functionality to the system.
Rich L.
Rich L. Checked in
Responded to no heat call for aging HVAC system (10+ years). Inspected control board and discovered faulty circuit connections causing system failure. Replaced damaged wiring harness on main control panel and verified proper operation of gas valve assembly, restoring heat functionality to the system.
west allis, WI 53214
Performed routine maintenance on Rheem HVAC system as part of prepaid maintenance visit. Inspected furnace components, connections, and ventilation system including the PVC exhaust pipes. Identified and reinforced pipe joint connection with appropriate sealant to prevent potential leaks in the utility area plumbing infrastructure.
Performed routine maintenance on Rheem HVAC system as part of prepaid maintenance visit. Inspected furnace components, connections, and ventilation system including the PVC exhaust pipes. Identified and reinforced pipe joint connection with appropriate sealant to prevent potential leaks in the utility area plumbing infrastructure.
Scott M.
Scott M. Checked in
Performed routine maintenance on Rheem HVAC system as part of prepaid maintenance visit. Inspected furnace components, connections, and ventilation system including the PVC exhaust pipes. Identified and reinforced pipe joint connection with appropriate sealant to prevent potential leaks in the utility area plumbing infrastructure.
West Allis, WI 53214
West Allis, WI - Conducted gas leak investigation at junction where black gas pipe meets wooden structural beam. Performed pressure test on system to verify integrity of connection point. Identified and sealed small gap between pipe fitting and support bracket to eliminate minor leak detected during testing.
Gabriel S.
Gabriel S. Checked in
Conducted gas leak investigation at junction where black gas pipe meets wooden structural beam. Performed pressure test on system to verify integrity of connection point. Identified and sealed small gap between pipe fitting and support bracket to eliminate minor leak detected during testing.
West Allis, WI 53227
Completed installation of a Carrier air conditioning system with dual outdoor condensers positioned on a snow-covered ground adjacent to the client's vinyl-sided residence. The installation included proper electrical connections and refrigerant line setup. In the basement utility room, installed a new furnace unit with complete PVC ventilation system and organized refrigerant line connections. All components were properly secured and tested for functionality.
Completed installation of a Carrier air conditioning system with dual outdoor condensers positioned on a snow-covered ground adjacent to the client's vinyl-sided residence. The installation included proper electrical connections and refrigerant line setup. In the basement utility room, installed a new furnace unit with complete PVC ventilation system and organized refrigerant line connections. All components were properly secured and tested for functionality.
Jason G.
Jason G. Checked in
Completed installation of a Carrier air conditioning system with dual outdoor condensers positioned on a snow-covered ground adjacent to the client's vinyl-sided residence. The installation included proper electrical connections and refrigerant line setup. In the basement utility room, installed a new furnace unit with complete PVC ventilation system and organized refrigerant line connections. All components were properly secured and tested for functionality.
West Allis, WI 53219
WEST ALLIS, WI - Exposed wall cavity to access and replace aging copper plumbing system for shower/tub. Installed new brass valve junction with multiple connection points, securing all copper pipes to the cement board backing with proper mounting hardware. Completed installation provides improved water distribution with accessible shutoff controls.
Gabriel S.
Gabriel S. Checked in
Exposed wall cavity to access and replace aging copper plumbing system for shower/tub. Installed new brass valve junction with multiple connection points, securing all copper pipes to the cement board backing with proper mounting hardware. Completed installation provides improved water distribution with accessible shutoff controls.
WEST ALLIS, WI 53227
Conducted inspection of bathroom shower/tub fixture with oil-rubbed bronze finish. Identified significant water damage and mold growth on surrounding wall surfaces. Provided estimate for fixture replacement and recommended addressing underlying moisture issues to prevent future damage.
Conducted inspection of bathroom shower/tub fixture with oil-rubbed bronze finish. Identified significant water damage and mold growth on surrounding wall surfaces. Provided estimate for fixture replacement and recommended addressing underlying moisture issues to prevent future damage.
Gabriel S.
Gabriel S. Checked in
Conducted inspection of bathroom shower/tub fixture with oil-rubbed bronze finish. Identified significant water damage and mold growth on surrounding wall surfaces. Provided estimate for fixture replacement and recommended addressing underlying moisture issues to prevent future damage.
WEST ALLIS, WI 53227
Performed comprehensive HVAC tune-up service including temperature differential testing across the system. Supply air temperature measured at 45.8°F and return air temperature recorded at 95.6°F, confirming proper cooling performance with a 49.8°F temperature differential, which is within optimal operational parameters.
Performed comprehensive HVAC tune-up service including temperature differential testing across the system. Supply air temperature measured at 45.8°F and return air temperature recorded at 95.6°F, confirming proper cooling performance with a 49.8°F temperature differential, which is within optimal operational parameters.
Todd H.
Todd H. Checked in
Performed comprehensive HVAC tune-up service including temperature differential testing across the system. Supply air temperature measured at 45.8°F and return air temperature recorded at 95.6°F, confirming proper cooling performance with a 49.8°F temperature differential, which is within optimal operational parameters.
West Allis, WI 53214
Completed thermostat replacement on Daikin HVAC system, installing new unit and connecting all control wiring (R, W, G, Y, B) according to manufacturer specifications. Verified proper system operation through heating and cooling cycle tests, ensuring communication between thermostat and furnace unit.
Completed thermostat replacement on Daikin HVAC system, installing new unit and connecting all control wiring (R, W, G, Y, B) according to manufacturer specifications. Verified proper system operation through heating and cooling cycle tests, ensuring communication between thermostat and furnace unit.
Carlos R.
Carlos R. Checked in
Completed thermostat replacement on Daikin HVAC system, installing new unit and connecting all control wiring (R, W, G, Y, B) according to manufacturer specifications. Verified proper system operation through heating and cooling cycle tests, ensuring communication between thermostat and furnace unit.
West Allis, WI 53219
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Discover the Thielmann Heating, Cooling & Plumbing Difference

Fully Licensed & Insured

Our experts have the expertise and training to deliver the highest quality services every time.

Trusted Since 1929

We have served Southeastern Wisconsin for nearly a century, so we understand the needs of our community.

Financing Available

We offer various options from financing partners to help you meet your specific needs and budget.

5-Star Customer Service

Thielmann Heating, Cooling & Plumbing promises five-star customer service with every interaction.

Committed to Excellence

We complete jobs quickly without compromising our commitment to excellence.

Satisfaction Guarantee

Our team is dedicated to ensuring your 100% satisfaction with every service we perform.

Fully Licensed & Insured

Our experts have the expertise and training to deliver the highest quality services every time.

Trusted Since 1929

We have served Southeastern Wisconsin for nearly a century, so we understand the needs of our community.

Financing Available

We offer various options from financing partners to help you meet your specific needs and budget.

5-Star Customer Service

Thielmann Heating, Cooling & Plumbing promises five-star customer service with every interaction.

Committed to Excellence

We complete jobs quickly without compromising our commitment to excellence.

Satisfaction Guarantee

Our team is dedicated to ensuring your 100% satisfaction with every service we perform.

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Our Reviews

See What Your Neighbors Are Saying

I liked my experience with them. The guys I spoke with prior to doing the work, the estimation phase , and the ones I spoke with after the work was completed had enough knowledge and suggestion to answer all my questions. I’m pleased with the job…

De'Angelo T.

De'Angelo T.

Excellent team from start to finish. They were all very respectful of our property, as they promptly and professionally went about their task of installing a new air conditioner system. The system works very well, so far. It is also much quieter than the previous 40+…

Jerry W.

Jerry W.

Thielmann did a tremendous job replacing our Carrier furnace. They worked with us to make sure we were able to get the right product and even worked with Carrier on the issues we were seeing on our old furnace as it was failing sooner than it…

J. K.

J. K.

I've been using Thielmann Group for all my heating and air conditioning since I built my house 23 years ago. They have been great in emergency service and regular maintenance service. On time and very friendly staff. Would, and have, recommend them to anyone!

Paul K.

Paul K.

I have used Thielmann for both installation of a new furnace + A/C recently, but also an install of a ductless mini-split unit six years ago. I fully trust their brands and recommendations. I can't say enough of about this company. Every single person from administrative…

Christin C.

Christin C.