Trusted Home Services In Glendale | Thielmann Heating And Cooling

Trusted Home Services in Glendale

Thielmann Heating, Cooling, and Plumbing is proud to serve Southeastern Wisconsin with comprehensive home services that keep your living spaces comfortable, safe, and efficient. With over 90 years of experience, we specialize in providing tailored solutions to meet the unique demands of your Glendale home. Whether you need an upgraded HVAC system or advanced plumbing repairs, our skilled team is here to help. Simply give us a call at (262) 315-3067 or contact our team online to schedule your service or consultation. 

Comprehensive Plumbing Services in Glendale

fixing pipe under sink

Your home’s plumbing system plays a crucial role in daily life. Thielmann’s skilled, local plumbers provide expert services to keep everything running smoothly:

  • Leak Detection and Repairs: Using advanced tools, we quickly locate and fix leaks to prevent water damage and reduce waste. Early detection can save you money and prevent long-term structural issues.
  • Water Heater Services: From traditional tank models to tankless water heaters, we ensure you always have a reliable source of hot water. Our team handles installations, repairs, and maintenance to meet your household’s demands.
  • Fixture Upgrades: Refresh your kitchen or bathroom with modern, efficient fixtures that combine style and functionality. Upgrades like water-saving faucets and showerheads improve efficiency and add a polished look to your spaces.
  • Garbage Disposal Repairs and Installations: Keep your kitchen running smoothly  and speed up clean up times with our garbage disposal services. Whether you need a new installation or a repair, we ensure your system operates efficiently to handle everyday waste disposal needs.

Heating Services Built for Glendale’s Cold Winters

The cold Glendale winters call for heating systems that are both dependable and efficient. Thielmann Heating, Cooling, and Plumbing specializes in delivering tailored solutions that give you peace of mind, no matter how low the temperature drops:

  1. Heat Pump Installations: Achieve year-round comfort with energy-efficient heat pumps that provide both heating and cooling. These systems are perfect for maintaining a consistent indoor temperature while reducing utility costs. Our team ensures seamless installation and provides guidance on selecting the best unit for your home’s size and needs.
  2. Boiler Services: From new installations to routine maintenance, our boiler services ensure steady, efficient heating throughout your home. Boilers are known for their durability and even heat distribution, making them an excellent choice for Glendale homeowners.
  3. Furnace Tune-Ups and Replacements: Regular furnace maintenance helps avoid breakdowns and extends system life. Need an upgrade? Our high-efficiency models deliver optimal performance and savings while reducing environmental impact.

Advanced Cooling Solutions in Glendale 

Outside AC system

As temperatures soar, ensuring your home remains a cool oasis is essential. Thielmann offers a comprehensive array of Glendale cooling services to meet your comfort needs:

  • Custom AC Installations: We’ll design and install an air conditioning system tailored to your home’s specific layout and cooling requirements. Our Glendale AC installations prioritize efficiency and reliability to keep your energy costs low.
  • Ductless Mini-Splits: Perfect for homes without ductwork, mini-split systems offer flexible cooling solutions for individual rooms or areas. These systems are energy-efficient and allow for zoned cooling, ensuring targeted comfort.
  • Smart Thermostat Integration: Optimize your cooling system with smart thermostats that allow you to monitor and adjust temperatures from anywhere. With scheduling features and energy usage tracking, you can maintain a comfortable environment while saving on utility bills.
  • Seasonal AC Maintenance: Regular tune-ups ensure your system operates efficiently, preventing costly repairs and prolonging its lifespan. Our maintenance services include filter changes, coil cleaning, and system inspections to catch issues early.

Enhance Your Home’s Air Quality with Expert Solutions

Clean air is important for your family’s well-being, especially in the case where respiratory illness is a concern. Our indoor air quality services in Glendale help create a healthier, more comfortable environment. To do so, we offer:

  • Air Purification Systems: Remove allergens, dust, and pollutants with high-efficiency air purifiers. These systems integrate seamlessly with your HVAC, ensuring clean air throughout your home.
  • Humidifiers and Dehumidifiers: Maintain balanced humidity levels to prevent mold growth and improve overall comfort. Proper humidity control protects your home’s structure and enhances indoor air quality.
  • Ventilation Enhancements: Ensure proper airflow throughout your home to reduce stale air and indoor pollutants. Upgraded ventilation systems provide fresh air circulation, especially in tightly sealed homes.

Why Southeastern Wisconsin Chooses Thielmann

Since 1929, Thielmann Heating, Cooling, and Plumbing has provided our customers with exceptional service and commitment to quality. Here’s what sets us apart:

  • Decades of Expertise: With over 90 years in the industry, we bring unmatched knowledge and experience to every project. Our team stays updated on the latest technologies and best practices.
  • Customized Solutions: We take the time to understand your specific needs, offering services tailored to your home’s requirements. No two homes are the same, and our personalized approach reflects that.
  • Dependable Support: Whether it’s a routine check-up or an emergency repair, you can count on us to deliver prompt and reliable service. We pride ourselves on our quick response times and thorough work.
  • Comprehensive Offerings: From heating and cooling to plumbing and electrical, we’re your one-stop shop for all home service needs. Our wide range of services ensures that every aspect of your home’s systems is covered.

Contact Thielmann Today for Expert Home Services in Glendale

Is your home in need of a comfort upgrade, improved energy efficiency, or enhanced safety? Reach out to Thielmann Heating, Cooling, and Plumbing to schedule a consultation or service by calling (262) 315-3067. We’re dedicated to delivering Glendale homeowners tailored, high-quality solutions that fit their unique needs.

Recent Jobs and Reviews in Glendale, WI

Glendale, WI at a glance

Thielmann Heating, Cooling & Plumbing has completed 20 jobs in Glendale, WI between May 2026 and September 2026.

The most recent job was on September 30, 2026.

Thielmann Heating, Cooling & Plumbing has completed 46 jobs in Glendale, WI in the last 12 months.

Job Locations and Reviews

Conducted on-site evaluation for HVAC system replacement estimate. Assessed aging outdoor air conditioning condenser unit with visible weathering and deterioration, along with natural gas furnace located in basement showing advanced age but currently operational. Documented existing equipment conditions through photographic inspection and provided updated pricing options for complete system replacement both through membership warehouse program and standard retail channels.
Conducted on-site evaluation for HVAC system replacement estimate. Assessed aging outdoor air conditioning condenser unit with visible weathering and deterioration, along with natural gas furnace located in basement showing advanced age but currently operational. Documented existing equipment conditions through photographic inspection and provided updated pricing options for complete system replacement both through membership warehouse program and standard retail channels.
Bryan P.
Bryan P. Checked in
Conducted on-site evaluation for HVAC system replacement estimate. Assessed aging outdoor air conditioning condenser unit with visible weathering and deterioration, along with natural gas furnace located in basement showing advanced age but currently operational. Documented existing equipment conditions through photographic inspection and provided updated pricing options for complete system replacement both through membership warehouse program and standard retail channels.
Glendale, WI 53217
Completed estimate for full HVAC system replacement including natural gas furnace located in basement and outdoor air conditioning condenser unit. Customer requested second opinion on existing estimate for comparison. Evaluated current equipment configuration, assessed installation requirements, and documented existing system setup including thermostat controls and outdoor unit placement. Photographed exterior AC unit on concrete pad near foundation and interior wall-mounted thermostat and control devices to support equipment specifications and replacement recommendations.
Completed estimate for full HVAC system replacement including natural gas furnace located in basement and outdoor air conditioning condenser unit. Customer requested second opinion on existing estimate for comparison. Evaluated current equipment configuration, assessed installation requirements, and documented existing system setup including thermostat controls and outdoor unit placement. Photographed exterior AC unit on concrete pad near foundation and interior wall-mounted thermostat and control devices to support equipment specifications and replacement recommendations.
Rudy L.
Rudy L. Checked in
Completed estimate for full HVAC system replacement including natural gas furnace located in basement and outdoor air conditioning condenser unit. Customer requested second opinion on existing estimate for comparison. Evaluated current equipment configuration, assessed installation requirements, and documented existing system setup including thermostat controls and outdoor unit placement. Photographed exterior AC unit on concrete pad near foundation and interior wall-mounted thermostat and control devices to support equipment specifications and replacement recommendations.
Glendale, WI 53217
Completed preventive maintenance tune-up on HVAC system. Inspected refrigerant line insulation and measured supply air temperature at 101°F to verify proper system operation. Customer will provide their own air filter for future maintenance.
Completed preventive maintenance tune-up on HVAC system. Inspected refrigerant line insulation and measured supply air temperature at 101°F to verify proper system operation. Customer will provide their own air filter for future maintenance.
Carlos R.
Carlos R. Checked in
Completed preventive maintenance tune-up on HVAC system. Inspected refrigerant line insulation and measured supply air temperature at 101°F to verify proper system operation. Customer will provide their own air filter for future maintenance.
Glendale, WI 53217
Conducted site evaluation for supplemental heating solution in finished basement area currently served by insufficient electric baseboard heating. Assessed existing forced air furnace system and exterior HVAC equipment to determine feasibility of extending ductwork to basement living space. Documented current equipment configuration and structural considerations for potential system modification or zone addition.
Conducted site evaluation for supplemental heating solution in finished basement area currently served by insufficient electric baseboard heating. Assessed existing forced air furnace system and exterior HVAC equipment to determine feasibility of extending ductwork to basement living space. Documented current equipment configuration and structural considerations for potential system modification or zone addition.
Steven S.
Steven S. Checked in
Conducted site evaluation for supplemental heating solution in finished basement area currently served by insufficient electric baseboard heating. Assessed existing forced air furnace system and exterior HVAC equipment to determine feasibility of extending ductwork to basement living space. Documented current equipment configuration and structural considerations for potential system modification or zone addition.
Glendale, WI 53209
# HVAC Air Handler Installation

Completed installation of Unico air handler system in attic space, including proper mounting on platform, connection of flexible ductwork runs, and electrical conduit installation. System was tested and charged with R410A refrigerant, with final readings showing 68.6 psi low pressure, 245.6 psi high pressure, 63.2°F superheat, and 23.0°F subcooling, confirming proper system operation.

## Work Performed

Installed new Unico air handler unit in residential attic space on constructed wooden platform with adequate clearance for service access. Secured unit to platform using appropriate fasteners and leveling to manufacturer specifications. Connected flexible insulated ductwork to air handler, routing supply and return ducts through attic space to designated zones. Sealed all duct connections with mastic and secured with approved fasteners to prevent air leakage.

Ran electrical conduit from main panel to air handler location, ensuring proper wire gauge for
# HVAC Air Handler Installation

Completed installation of Unico air handler system in attic space, including proper mounting on platform, connection of flexible ductwork runs, and electrical conduit installation. System was tested and charged with R410A refrigerant, with final readings showing 68.6 psi low pressure, 245.6 psi high pressure, 63.2°F superheat, and 23.0°F subcooling, confirming proper system operation.

## Work Performed

Installed new Unico air handler unit in residential attic space on constructed wooden platform with adequate clearance for service access. Secured unit to platform using appropriate fasteners and leveling to manufacturer specifications. Connected flexible insulated ductwork to air handler, routing supply and return ducts through attic space to designated zones. Sealed all duct connections with mastic and secured with approved fasteners to prevent air leakage.

Ran electrical conduit from main panel to air handler location, ensuring proper wire gauge for
Juan C.
Juan C. Checked in
# HVAC Air Handler Installation Completed installation of Unico air handler system in attic space, including proper mounting on platform, connection of flexible ductwork runs, and electrical conduit installation. System was tested and charged with R410A refrigerant, with final readings showing 68.6 psi low pressure, 245.6 psi high pressure, 63.2°F superheat, and 23.0°F subcooling, confirming proper system operation. ## Work Performed Installed new Unico air handler unit in residential attic space on constructed wooden platform with adequate clearance for service access. Secured unit to platform using appropriate fasteners and leveling to manufacturer specifications. Connected flexible insulated ductwork to air handler, routing supply and return ducts through attic space to designated zones. Sealed all duct connections with mastic and secured with approved fasteners to prevent air leakage. Ran electrical conduit from main panel to air handler location, ensuring proper wire gauge for
Glendale, WI 53209
Conducted comprehensive whole-house repipe estimate for residential property requiring replacement of existing iron supply piping with copper and outdated drain lines with PVC. Assessed basement utility area with exposed ceiling joists, documenting current plumbing infrastructure including existing metal pipes, HVAC ductwork, and structural layout to determine scope of work for complete piping system replacement.
Conducted comprehensive whole-house repipe estimate for residential property requiring replacement of existing iron supply piping with copper and outdated drain lines with PVC. Assessed basement utility area with exposed ceiling joists, documenting current plumbing infrastructure including existing metal pipes, HVAC ductwork, and structural layout to determine scope of work for complete piping system replacement.
Nick B.
Nick B. Checked in
Conducted comprehensive whole-house repipe estimate for residential property requiring replacement of existing iron supply piping with copper and outdated drain lines with PVC. Assessed basement utility area with exposed ceiling joists, documenting current plumbing infrastructure including existing metal pipes, HVAC ductwork, and structural layout to determine scope of work for complete piping system replacement.
Glendale, WI 53209
Completed horizontal furnace installation in basement utility space with equipment suspended from ceiling joists using metal straps and hangers. Unit was properly mounted to wooden joists with appropriate support hardware and clearances maintained per manufacturer specifications. Coordinated with licensed electrician for electrical connections and power supply installation. White PVC piping installed for condensate drainage and venting system routed horizontally across ceiling. All required permits obtained and installation performed in compliance with local building codes. Equipment positioned to allow adequate service access and proper airflow in the mechanical room setting.
Completed horizontal furnace installation in basement utility space with equipment suspended from ceiling joists using metal straps and hangers. Unit was properly mounted to wooden joists with appropriate support hardware and clearances maintained per manufacturer specifications. Coordinated with licensed electrician for electrical connections and power supply installation. White PVC piping installed for condensate drainage and venting system routed horizontally across ceiling. All required permits obtained and installation performed in compliance with local building codes. Equipment positioned to allow adequate service access and proper airflow in the mechanical room setting.
Benjamin G.
Benjamin G. Checked in
Completed horizontal furnace installation in basement utility space with equipment suspended from ceiling joists using metal straps and hangers. Unit was properly mounted to wooden joists with appropriate support hardware and clearances maintained per manufacturer specifications. Coordinated with licensed electrician for electrical connections and power supply installation. White PVC piping installed for condensate drainage and venting system routed horizontally across ceiling. All required permits obtained and installation performed in compliance with local building codes. Equipment positioned to allow adequate service access and proper airflow in the mechanical room setting.
Glendale, WI 53209
Glendale, WI - Completed installation of new two-piece toilet in residential bathroom. Unit was properly set, secured, and tested for proper operation and leak-free connections.
Paul J.
Paul J. Checked in
Completed installation of new two-piece toilet in residential bathroom. Unit was properly set, secured, and tested for proper operation and leak-free connections.
Glendale, WI 53209
Glendale, WI - Responded to service call for leaking Flushmate toilet tank system. Performed diagnostic inspection to identify source of leak and assessed tank assembly condition. Customer was contacted prior to arrival as requested to confirm appointment time.
Luis H.
Luis H. Checked in
Responded to service call for leaking Flushmate toilet tank system. Performed diagnostic inspection to identify source of leak and assessed tank assembly condition. Customer was contacted prior to arrival as requested to confirm appointment time.
Glendale, WI 53209
Completed furnace replacement estimate for residential heating system with safety lockout preventing heat operation while air conditioning remains functional. Assessed existing HVAC equipment in basement utility area, documented current thermostat configuration and furnace condition, and provided replacement options to restore safe heating capability to the home.
Completed furnace replacement estimate for residential heating system with safety lockout preventing heat operation while air conditioning remains functional. Assessed existing HVAC equipment in basement utility area, documented current thermostat configuration and furnace condition, and provided replacement options to restore safe heating capability to the home.
Bryan P.
Bryan P. Checked in
Completed furnace replacement estimate for residential heating system with safety lockout preventing heat operation while air conditioning remains functional. Assessed existing HVAC equipment in basement utility area, documented current thermostat configuration and furnace condition, and provided replacement options to restore safe heating capability to the home.
Glendale, WI 53209
Completed installation of new outdoor air conditioning condenser unit and evaporator coil system. Unit was properly positioned on equipment pad, electrical connections were made with appropriate gauge wiring and color coding, refrigerant lines were installed and secured, and all components were tested for proper operation. System is operational and ready for use.
Completed installation of new outdoor air conditioning condenser unit and evaporator coil system. Unit was properly positioned on equipment pad, electrical connections were made with appropriate gauge wiring and color coding, refrigerant lines were installed and secured, and all components were tested for proper operation. System is operational and ready for use.
Branden B.
Branden B. Checked in
Completed installation of new outdoor air conditioning condenser unit and evaporator coil system. Unit was properly positioned on equipment pad, electrical connections were made with appropriate gauge wiring and color coding, refrigerant lines were installed and secured, and all components were tested for proper operation. System is operational and ready for use.
Glendale, WI 53209
Completed preventative maintenance tune-up on Mitsubishi Electric mini-split system. Performed comprehensive inspection of indoor wall-mounted air handler unit, including filter cleaning and verification of remote control functionality. Inspected outdoor disconnect box and electrical connections, confirming proper amperage ratings and secure wiring terminations at 60 AMP/240 VAC specifications. System tested and operating within normal parameters.
Completed preventative maintenance tune-up on Mitsubishi Electric mini-split system. Performed comprehensive inspection of indoor wall-mounted air handler unit, including filter cleaning and verification of remote control functionality. Inspected outdoor disconnect box and electrical connections, confirming proper amperage ratings and secure wiring terminations at 60 AMP/240 VAC specifications. System tested and operating within normal parameters.
Makinze C.
Makinze C. Checked in
Completed preventative maintenance tune-up on Mitsubishi Electric mini-split system. Performed comprehensive inspection of indoor wall-mounted air handler unit, including filter cleaning and verification of remote control functionality. Inspected outdoor disconnect box and electrical connections, confirming proper amperage ratings and secure wiring terminations at 60 AMP/240 VAC specifications. System tested and operating within normal parameters.
Glendale, WI 53209
Glendale, WI - Completed installation of exterior hose bib at building corner with proper mounting to brick wall and operational shut-off valve. New spigot was tested for proper flow and verified leak-free connection, with garden hose attached to confirm functionality. Installation includes secure wall penetration and appropriate weatherproofing at brick exterior.
Dan E.
Dan E. Checked in
Completed installation of exterior hose bib at building corner with proper mounting to brick wall and operational shut-off valve. New spigot was tested for proper flow and verified leak-free connection, with garden hose attached to confirm functionality. Installation includes secure wall penetration and appropriate weatherproofing at brick exterior.
Glendale, WI 53209
Glendale, WI - Completed installation of chrome shower and tub faucet assembly with lever-style handle in tiled shower/tub enclosure. Verified proper water flow, tested for leaks, and ensured all fixtures were securely mounted and functioning correctly.
Dan E.
Dan E. Checked in
Completed installation of chrome shower and tub faucet assembly with lever-style handle in tiled shower/tub enclosure. Verified proper water flow, tested for leaks, and ensured all fixtures were securely mounted and functioning correctly.
Glendale, WI 53209
Glendale, WI - Performed AC startup service on outdoor condensing unit. Verified condenser properly set on pad, disconnect switch in ON position, service valves in OPEN position, and breaker energized. System was ready to run with all electrical connections and refrigerant lines properly installed following completion of foundation wall repairs that had previously prevented final hookup.
Todd H.
Todd H. Checked in
Performed AC startup service on outdoor condensing unit. Verified condenser properly set on pad, disconnect switch in ON position, service valves in OPEN position, and breaker energized. System was ready to run with all electrical connections and refrigerant lines properly installed following completion of foundation wall repairs that had previously prevented final hookup.
Glendale, WI 53209
Conducted HVAC system estimate for air conditioning unit replacement due to inadequate cooling performance during previous cooling season. Evaluated existing equipment, electrical service capacity at main breaker panel, and basement mechanical room configuration to determine replacement specifications and installation requirements.
Conducted HVAC system estimate for air conditioning unit replacement due to inadequate cooling performance during previous cooling season. Evaluated existing equipment, electrical service capacity at main breaker panel, and basement mechanical room configuration to determine replacement specifications and installation requirements.
Steven S.
Steven S. Checked in
Conducted HVAC system estimate for air conditioning unit replacement due to inadequate cooling performance during previous cooling season. Evaluated existing equipment, electrical service capacity at main breaker panel, and basement mechanical room configuration to determine replacement specifications and installation requirements.
Glendale, WI 53209
Completed membership tune-up on outdoor HVAC unit, performing standard diagnostic testing and preventive maintenance procedures. Replaced UV bulb as part of service call. Multimeter readings confirmed system operating within normal parameters at 359.7 volts, indicating proper electrical supply to unit. Condenser coils showed moderate accumulation of environmental debris and weathering consistent with normal outdoor exposure.
Completed membership tune-up on outdoor HVAC unit, performing standard diagnostic testing and preventive maintenance procedures. Replaced UV bulb as part of service call. Multimeter readings confirmed system operating within normal parameters at 359.7 volts, indicating proper electrical supply to unit. Condenser coils showed moderate accumulation of environmental debris and weathering consistent with normal outdoor exposure.
Makinze C.
Makinze C. Checked in
Completed membership tune-up on outdoor HVAC unit, performing standard diagnostic testing and preventive maintenance procedures. Replaced UV bulb as part of service call. Multimeter readings confirmed system operating within normal parameters at 359.7 volts, indicating proper electrical supply to unit. Condenser coils showed moderate accumulation of environmental debris and weathering consistent with normal outdoor exposure.
Glendale, WI 53209
Glendale, WI - Diagnosed shower valve not closing completely, causing continuous water leak. Identified Kohler valve requiring GP30090 pressure balance unit replacement. Provided estimate for repair with necessary replacement parts.
Dan E.
Dan E. Checked in
Diagnosed shower valve not closing completely, causing continuous water leak. Identified Kohler valve requiring GP30090 pressure balance unit replacement. Provided estimate for repair with necessary replacement parts.
Glendale, WI 53209
Completed recurring membership heating maintenance visit on Weil-McLain gas boiler system. Performed standard inspection of boiler unit, verified pressure gauge readings, and inspected all copper piping, flexible connectors, and valve assemblies for proper operation. Reconfigured thermostat settings to control heating only, as air conditioning system has been removed and will not be replaced.
Completed recurring membership heating maintenance visit on Weil-McLain gas boiler system. Performed standard inspection of boiler unit, verified pressure gauge readings, and inspected all copper piping, flexible connectors, and valve assemblies for proper operation. Reconfigured thermostat settings to control heating only, as air conditioning system has been removed and will not be replaced.
Ron B.
Ron B. Checked in
Completed recurring membership heating maintenance visit on Weil-McLain gas boiler system. Performed standard inspection of boiler unit, verified pressure gauge readings, and inspected all copper piping, flexible connectors, and valve assemblies for proper operation. Reconfigured thermostat settings to control heating only, as air conditioning system has been removed and will not be replaced.
Glendale, WI 53217
Responded to water heater inspection findings regarding loose flue connection. Upon arrival, assessed the flue pipe assembly and confirmed inadequate sealing at connection points, which poses potential safety concerns for proper venting of combustion gases. Documented current condition of flue components showing signs of deterioration and improper securing. Advised of necessary repairs to secure and seal flue connections to meet code requirements and ensure safe operation of tanked water heater system.
Responded to water heater inspection findings regarding loose flue connection. Upon arrival, assessed the flue pipe assembly and confirmed inadequate sealing at connection points, which poses potential safety concerns for proper venting of combustion gases. Documented current condition of flue components showing signs of deterioration and improper securing. Advised of necessary repairs to secure and seal flue connections to meet code requirements and ensure safe operation of tanked water heater system.
Kyle L.
Kyle L. Checked in
Responded to water heater inspection findings regarding loose flue connection. Upon arrival, assessed the flue pipe assembly and confirmed inadequate sealing at connection points, which poses potential safety concerns for proper venting of combustion gases. Documented current condition of flue components showing signs of deterioration and improper securing. Advised of necessary repairs to secure and seal flue connections to meet code requirements and ensure safe operation of tanked water heater system.
Glendale, WI 53209
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What To Expect

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.