AC, Heating and Plumbing Services in Wauwatosa

Thielmann - Wauwatosa - City Sign 2

Thielmann Heating, Cooling & Plumbing can assist you with all your heating, ventilation, and air conditioning (HVAC) repair issues in Wauwatosa, Wisconsin. We want you to spend more time with your friends and family and enjoy your weekends and time off at the Hank Aaron Trails without worrying about the HVAC system in your house.

With over 90 years of experience, we can ensure your systems work efficiently for comfortable temperatures at your home or business.

For HVAC services in Wauwatosa, look no further than The Thielmann Group.

Our Expert Heating Services

Wauwatosa winters are no joke, and the last thing you want is a heating system that can’t keep up. We are experts in the following heating services:

  • Fast, reliable heating repairs: A broken furnace or boiler can’t wait. Our technicians provide prompt service to restore heat to your home.
  • New heating system installations: If your heating system is outdated, we can install a high-efficiency option that improves comfort and lower energy costs.
  • Preventive heating maintenance: Regular checkups help prevent unexpected breakdowns, keep your system running smoothly and extend its life span.

Our furnace repair technicians are ready to promptly restore your heat. We know the urgency of “no heat” situations during Wisconsin winters. Our NATE-certified technicians can visit you 24/7 for HVAC emergencies — not including plumbing service — and can service and repair all system makes and models.

Air Conditioning Repairs, Maintenance & Installation for a Comfortable Wauwatosa Home

Summers in Wauwatosa can be relentless, but your home should always be a refreshing escape. Our air conditioning services help keep your space cool and comfortable when temperatures rise.

  • Air conditioner repair services: If your air conditioner is struggling, we’ll diagnose the issue and return it to peak performance.
  • New AC Installation: We install modern, energy-efficient air conditioning systems for better cooling and lower energy bills.
  • Routine AC maintenance: A well-maintained system runs more efficiently, prevents costly repairs, and lasts longer.

HVAC Repair Services in Wauwatosa, Wisconsin

Dependable Plumbing Services in Wauwatosa

Plumbing issues can be a major hassle, but we make fixing them easy. Our professional plumbing services cover everything from minor leaks to major installations.

  • Repairs and installations: From leaky faucets to new water heaters, we handle all your plumbing needs with expert care.
  • Water conditioning solutions: Improve your home’s water quality for better-tasting and cleaner water.
  • Sump pumps and pipe repairs: Prevent water damage and keep your plumbing system in top shape.
  • Hose bib services: We replace faulty hose bibs to prevent damage to your home’s foundation, including three common types — standard, ball valve and frost-free.

A Plan for Extra Peace of Mind

Want extra peace of mind? Our maintenance plan includes annual tuneups and a water quality analysis to help prevent costly surprises. You’ll also get priority scheduling, a 15% discount on repairs and expert maintenance scheduling handled for you.

Why Wauwatosa Chooses Thielmann Heating, Cooling & Plumbing

For nearly a century, homeowners in Wauwatosa have trusted us to keep their homes comfortable and running smoothly. Here’s why:

  • Licensed and insured: Your home is in expert hands.
  • Five-star service: We put our customers first and deliver top-notch workmanship.
  • Flexible financing: We can provide budget-friendly options through our financing partners.
  • Commitment to quality: Our team does the job right the first time.

HVAC Repair Services in Wauwatosa, Wisconsin

Comfort Starts Here

From chilly winter nights to sweltering summer afternoons, our expert team is here to help with reliable heating, cooling and plumbing solutions. Whether you need fast heating repairs, an air conditioning upgrade or trusted plumbing services, we’ve got you covered.

Call our technicians at (262) 384-6407 to book an appointment. A comfortable, worry-free home is just a call away.

Read Reviews by Our Customers

Recent Jobs and Reviews in Wauwatosa, WI

Job Locations and Reviews

Wauwatosa, WI - Diagnosed and serviced 10+ year old HVAC system with no heat complaint. Inspection revealed failed ignition assembly preventing proper furnace operation. Replaced ignition module and cleaned flame sensor to restore proper heating function, then performed complete system test to verify normal operation.
Josh V.
Josh V. Checked in
Diagnosed and serviced 10+ year old HVAC system with no heat complaint. Inspection revealed failed ignition assembly preventing proper furnace operation. Replaced ignition module and cleaned flame sensor to restore proper heating function, then performed complete system test to verify normal operation.
Wauwatosa, WI 53213
Wauwatosa, WI - Conducted inspection of bathroom plumbing fixtures and identified corrosion on the metal floor flange where supply line connects to fixture. Observed metallic braided water supply line with hexagonal nut connection to shut-off valve showing signs of mineral deposits. Documentation completed with photographic evidence for reference.
Kyle L.
Kyle L. Checked in
Conducted inspection of bathroom plumbing fixtures and identified corrosion on the metal floor flange where supply line connects to fixture. Observed metallic braided water supply line with hexagonal nut connection to shut-off valve showing signs of mineral deposits. Documentation completed with photographic evidence for reference.
Wauwatosa, WI 53213
Performed preventative maintenance on NTI boiler system showing operating temperature of 179°F. Inspected expansion tank, pressure gauge, and associated copper piping network for proper function. System appears to be operating within normal parameters with minor moisture noted near floor drain that will require monitoring.
Performed preventative maintenance on NTI boiler system showing operating temperature of 179°F. Inspected expansion tank, pressure gauge, and associated copper piping network for proper function. System appears to be operating within normal parameters with minor moisture noted near floor drain that will require monitoring.
Ron B.
Ron B. Checked in
Performed preventative maintenance on NTI boiler system showing operating temperature of 179°F. Inspected expansion tank, pressure gauge, and associated copper piping network for proper function. System appears to be operating within normal parameters with minor moisture noted near floor drain that will require monitoring.
Wauwatosa, WI 53213
Conducted site assessment for HVAC replacement, including detailed measurements and sketches of the installation area. Documented existing electrical connections on exterior brick wall, noting ABB electrical box and junction box configuration. Observed evidence of wall deterioration that will need to be addressed during installation. Proposed system specifications were calculated based on square footage and building requirements.
Conducted site assessment for HVAC replacement, including detailed measurements and sketches of the installation area. Documented existing electrical connections on exterior brick wall, noting ABB electrical box and junction box configuration. Observed evidence of wall deterioration that will need to be addressed during installation. Proposed system specifications were calculated based on square footage and building requirements.
Michael Y.
Michael Y. Checked in
Conducted site assessment for HVAC replacement, including detailed measurements and sketches of the installation area. Documented existing electrical connections on exterior brick wall, noting ABB electrical box and junction box configuration. Observed evidence of wall deterioration that will need to be addressed during installation. Proposed system specifications were calculated based on square footage and building requirements.
Wauwatosa, WI 53222
Performed comprehensive tune-up service on an AIRE-FLO furnace system in basement. Opened unit to inspect internal components including control board, wiring harnesses, and motor assembly. Verified proper function of ventilation system with particular attention to the PVC exhaust pipes and gas line connections.
Performed comprehensive tune-up service on an AIRE-FLO furnace system in basement. Opened unit to inspect internal components including control board, wiring harnesses, and motor assembly. Verified proper function of ventilation system with particular attention to the PVC exhaust pipes and gas line connections.
Adriel H.
Adriel H. Checked in
Performed comprehensive tune-up service on an AIRE-FLO furnace system in basement. Opened unit to inspect internal components including control board, wiring harnesses, and motor assembly. Verified proper function of ventilation system with particular attention to the PVC exhaust pipes and gas line connections.
Wauwatosa, WI 53213
Wauwatosa, WI - Diagnosed system failure traced to control board malfunction evident from error code displayed on LED panel. Replaced faulty circuit board, verified proper wire connections matching original configuration, and confirmed successful system operation with normal heating function restored.
Kevin P.
Kevin P. Checked in
Diagnosed system failure traced to control board malfunction evident from error code displayed on LED panel. Replaced faulty circuit board, verified proper wire connections matching original configuration, and confirmed successful system operation with normal heating function restored.
Wauwatosa, WI 53222
Completed installation of insulated cylindrical metal ductwork in exposed ceiling area, properly securing between wooden joists during ongoing renovation. System was carefully integrated with existing electrical components while maintaining proper clearances in the construction zone.
Completed installation of insulated cylindrical metal ductwork in exposed ceiling area, properly securing between wooden joists during ongoing renovation. System was carefully integrated with existing electrical components while maintaining proper clearances in the construction zone.
Jim K.
Jim K. Checked in
Completed installation of insulated cylindrical metal ductwork in exposed ceiling area, properly securing between wooden joists during ongoing renovation. System was carefully integrated with existing electrical components while maintaining proper clearances in the construction zone.
Wauwatosa, WI 53213
Performed inspection and service on plumbing infrastructure in utility area. Identified corrosion on copper piping connection to Caleffi brass valve/regulator assembly. Documented condition of PVC pipe junctions and metal fixtures in crawlspace/ceiling area for future maintenance recommendations.
Performed inspection and service on plumbing infrastructure in utility area. Identified corrosion on copper piping connection to Caleffi brass valve/regulator assembly. Documented condition of PVC pipe junctions and metal fixtures in crawlspace/ceiling area for future maintenance recommendations.
Derik B
Derik B Checked in
Performed inspection and service on plumbing infrastructure in utility area. Identified corrosion on copper piping connection to Caleffi brass valve/regulator assembly. Documented condition of PVC pipe junctions and metal fixtures in crawlspace/ceiling area for future maintenance recommendations.
Wauwatosa, WI 53213
Wauwatosa, WI - Inspected and installed new recirculation pump for residential hot water system. Completed copper pipe connections with brass fittings and ensured proper mounting against basement wall. System tested for functionality and proper operation before completion.
Gabriel S.
Gabriel S. Checked in
Inspected and installed new recirculation pump for residential hot water system. Completed copper pipe connections with brass fittings and ensured proper mounting against basement wall. System tested for functionality and proper operation before completion.
Wauwatosa, WI 53226
Installed new sump pump system in basement, including proper PVC discharge piping and electrical connections to control unit. Removed debris from sump pit and verified proper operation of the system with successful water evacuation.
Installed new sump pump system in basement, including proper PVC discharge piping and electrical connections to control unit. Removed debris from sump pit and verified proper operation of the system with successful water evacuation.
Gabriel S.
Gabriel S. Checked in
Installed new sump pump system in basement, including proper PVC discharge piping and electrical connections to control unit. Removed debris from sump pit and verified proper operation of the system with successful water evacuation.
Wauwatosa, WI 53225
Completed installation of commercial toilet unit with chrome flush valve mechanism in institutional bathroom setting. Verified proper mounting to tiled wall and confirmed functionality of all plumbing connections. Inspected accessibility features including side-mounted grab bar to ensure compliance with safety standards.
Completed installation of commercial toilet unit with chrome flush valve mechanism in institutional bathroom setting. Verified proper mounting to tiled wall and confirmed functionality of all plumbing connections. Inspected accessibility features including side-mounted grab bar to ensure compliance with safety standards.
Kyle L.
Kyle L. Checked in
Completed installation of commercial toilet unit with chrome flush valve mechanism in institutional bathroom setting. Verified proper mounting to tiled wall and confirmed functionality of all plumbing connections. Inspected accessibility features including side-mounted grab bar to ensure compliance with safety standards.
Wauwatosa, WI 53213
Performed inspection of boiler system, checking pressure/temperature readings on gauge. Verified proper operation of expansion tank and associated pressure relief components. All copper piping connections and brass valves appeared intact with no leaks detected.
Performed inspection of boiler system, checking pressure/temperature readings on gauge. Verified proper operation of expansion tank and associated pressure relief components. All copper piping connections and brass valves appeared intact with no leaks detected.
Ron B.
Ron B. Checked in
Performed inspection of boiler system, checking pressure/temperature readings on gauge. Verified proper operation of expansion tank and associated pressure relief components. All copper piping connections and brass valves appeared intact with no leaks detected.
Wauwatosa, WI 53213
Wauwatosa, WI - Performed comprehensive tune-up maintenance on HVAC system. Inspected internal components including blower motor, copper refrigerant lines, and electrical connections. System shows normal operational wear with typical copper oxidation but all components functioning properly. Verified proper operation of all systems.
Kevin P.
Kevin P. Checked in
Performed comprehensive tune-up maintenance on HVAC system. Inspected internal components including blower motor, copper refrigerant lines, and electrical connections. System shows normal operational wear with typical copper oxidation but all components functioning properly. Verified proper operation of all systems.
Wauwatosa, WI 53213
Diagnosed and repaired a "no heat" condition on residential furnace system less than 10 years old. Inspection revealed faulty flame sensor preventing proper ignition sequence. Cleaned flame sensor, restored proper communication with control board, and verified proper heat cycle operation through multiple test cycles before replacing access panels.
Diagnosed and repaired a "no heat" condition on residential furnace system less than 10 years old. Inspection revealed faulty flame sensor preventing proper ignition sequence. Cleaned flame sensor, restored proper communication with control board, and verified proper heat cycle operation through multiple test cycles before replacing access panels.
Josh V.
Josh V. Checked in
Diagnosed and repaired a "no heat" condition on residential furnace system less than 10 years old. Inspection revealed faulty flame sensor preventing proper ignition sequence. Cleaned flame sensor, restored proper communication with control board, and verified proper heat cycle operation through multiple test cycles before replacing access panels.
Wauwatosa, WI 53213
Successfully installed a new boiler system with copper supply lines running through floor joists. Installed brass air vent/pressure relief valve assembly against concrete block wall and connected PVC exhaust components according to manufacturer specifications.
Successfully installed a new boiler system with copper supply lines running through floor joists. Installed brass air vent/pressure relief valve assembly against concrete block wall and connected PVC exhaust components according to manufacturer specifications.
Derik B
Derik B Checked in
Successfully installed a new boiler system with copper supply lines running through floor joists. Installed brass air vent/pressure relief valve assembly against concrete block wall and connected PVC exhaust components according to manufacturer specifications.
Wauwatosa, WI 53213
Performed comprehensive tune-up on residential heating system. Conducted electrical diagnostics using digital multimeter on furnace control board and components. Inspected hydronic distribution system including circulation pump, zone valves, and copper piping network for proper operation and leaks.
Performed comprehensive tune-up on residential heating system. Conducted electrical diagnostics using digital multimeter on furnace control board and components. Inspected hydronic distribution system including circulation pump, zone valves, and copper piping network for proper operation and leaks.
Kevin P.
Kevin P. Checked in
Performed comprehensive tune-up on residential heating system. Conducted electrical diagnostics using digital multimeter on furnace control board and components. Inspected hydronic distribution system including circulation pump, zone valves, and copper piping network for proper operation and leaks.
Wauwatosa, WI 53213
Wauwatosa, WI - Performed routine maintenance on HVAC system and water heater in utility area. Visual inspection confirmed both units are in normal working condition with proper connections and no visible damage, leaks, or unusual wear. Documentation updated with service information on equipment.
Shane P.
Shane P. Checked in
Performed routine maintenance on HVAC system and water heater in utility area. Visual inspection confirmed both units are in normal working condition with proper connections and no visible damage, leaks, or unusual wear. Documentation updated with service information on equipment.
Wauwatosa, WI 53222
Wauwatosa, WI - Accessed bathroom wall through opening to inspect problematic plumbing pipe system. Identified aging copper/brass pipes with visible corrosion and deteriorated connections. Further assessment revealed need for pipe replacement due to potential leakage risks in the wall cavity.
Gabriel S.
Gabriel S. Checked in
Accessed bathroom wall through opening to inspect problematic plumbing pipe system. Identified aging copper/brass pipes with visible corrosion and deteriorated connections. Further assessment revealed need for pipe replacement due to potential leakage risks in the wall cavity.
Wauwatosa, WI 53213
Responded to service call for water leakage. Inspected aged plumbing system with visible corrosion at connection points between black pipe assembly and copper pipes. Replaced damaged section of main pipe and deteriorated fittings in ceiling/wall space. Pressure tested system after repair to confirm successful resolution of the leak.
Responded to service call for water leakage. Inspected aged plumbing system with visible corrosion at connection points between black pipe assembly and copper pipes. Replaced damaged section of main pipe and deteriorated fittings in ceiling/wall space. Pressure tested system after repair to confirm successful resolution of the leak.
Gabriel S.
Gabriel S. Checked in
Responded to service call for water leakage. Inspected aged plumbing system with visible corrosion at connection points between black pipe assembly and copper pipes. Replaced damaged section of main pipe and deteriorated fittings in ceiling/wall space. Pressure tested system after repair to confirm successful resolution of the leak.
Wauwatosa, WI 53226
Performed comprehensive tune-up on heating system, finding significant dirt accumulation affecting efficiency. Cleaned heat exchanger components, removing built-up debris from fins and radiator elements. Inspected plumbing connections and control valves in utility area, noting some minor corrosion at connection points requiring monitoring.
Performed comprehensive tune-up on heating system, finding significant dirt accumulation affecting efficiency. Cleaned heat exchanger components, removing built-up debris from fins and radiator elements. Inspected plumbing connections and control valves in utility area, noting some minor corrosion at connection points requiring monitoring.
Kevin P.
Kevin P. Checked in
Performed comprehensive tune-up on heating system, finding significant dirt accumulation affecting efficiency. Cleaned heat exchanger components, removing built-up debris from fins and radiator elements. Inspected plumbing connections and control valves in utility area, noting some minor corrosion at connection points requiring monitoring.
Wauwatosa, WI 53213
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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.