Heating, Cooling, And Plumbing Repair Services In Menomonee Falls, Wisconsin

Heating, Cooling, and Plumbing Repair Services in Menomonee Falls, Wisconsin

Your Local Heating and Cooling Experts since 1929

Our team of professionals are available to provide superior heating, HVAC, and air conditioning services for homes and commercial properties in Menomonee Falls, Wisconsin. Our number one priority is customer satisfaction, and we go above and beyond to ensure you receive the best service possible.

With our team of Nate-certified technicians and friendly office staff, we are dedicated to delivering exceptional results. We understand the importance of a comfortable home or workplace, and that is why we are committed to providing reliable heating and cooling solutions all year round.

For HVAC services in Menomonee Falls, look no further than The Thielmann Group. Contact us online or call (262) 299-6197 to get started.

Menomonee Falls Heating and Air Conditioning Company

Looking for reliable heating and cooling services in Menomonee Falls? Look no further than our team! With a strong reputation since 1929, our expert staff ensures top-notch equipment installation and repair. We take pride in offering the best heating products, installation, and services in Waukesha County.

We offer various types of heating and HVAC options, including:

Our factory-trained and NATE-certified professionals are ready to get the job done right. Rest assured, we’ve got you covered with prompt furnace repair services in case of any heating problems. Our NATE-certified specialists are available 24/7 to service and repair all makes and models. Stay warm during harsh Wisconsin winters – reach out to us for all your heating or furnace repair needs in Menomonee Falls, WI.

Thielmann - New Berlin - Install Truck 24

Air Conditioner Repair and Installation Services

Looking for a new air conditioning system? Look no further! We have the perfect solution to keep you cool and suit your budget. Our experienced team will ensure a flawless installation, perfectly sized to your space. Our technicians are factory trained and NATE-certified, equipped with years of knowledge to install your new central air or ductless system with superior workmanship. Stay cool with confidence!

We work on all types of cooling systems, including:

  • Air conditioners: We can work on all models of air conditioning systems for residential and commercial properties.
  • Heat pumps: We can repair, replace, or maintain energy-efficient heat pumps that deliver warm air inside and outside the home.
  • Ductless mini-splits: We can service ductless HVAC units that provide total climate control for single rooms.

Duct Cleaning

The ductwork in your HVAC system plays a vital role, acting as the lungs of your home. Every bit of heated or cooled air flows through it, ensuring comfort and well-being. At The Thielmann Group we take pride in ensuring clean and healthy indoor environments for homes and businesses.

From humidity control and air purification to duct cleaning and more, we offer solutions to improve your indoor air quality. The ductwork in your HVAC system plays a vital role, acting as the lungs of your home. Every bit of heated or cooled air flows through it, ensuring comfort and well-being.

  • Air purifiers
  • Humidifiers
  • Dehumidifiers

Air Conditioning and HVAC Services in Menomonee Falls, Wisconsin

Why Choose The Thielmann Group

Since 1929, our team has been the go-to choice for top-quality residential and commercial HVAC services in Menomonee Falls and beyond. Our NATE-certified technicians can service all brands, provide 24/7 emergency care, and more. Rest assured, we have you covered for all your HVAC needs! Plus, we offer upfront pricing, financing options, special deals, and a job well done.

Contact us online or call (262) 299-6197 to schedule the HVAC services you need.

Read Reviews by Our Customers

Recent Jobs and Reviews in Menomonee Falls, WI

Menomonee Falls, WI at a glance

Thielmann Heating, Cooling & Plumbing has completed 20 jobs in Menomonee Falls, WI in October 2026.

The most recent job was on October 22, 2026.

Thielmann Heating, Cooling & Plumbing has completed 292 jobs in Menomonee Falls, WI in the last 12 months.

Job Locations and Reviews

Performed an on-site estimate for water heater replacement, evaluating options for customer-supplied or contractor-supplied unit installation. Inspected the existing gas-fired tank-type water heater, including the galvanized flue, gas supply with shutoff valve, copper water lines, and surrounding basement piping and ductwork, and found no visible corrosion, leaks, or damage. Documented existing conditions and clearances to determine the scope of work for installation.
Performed an on-site estimate for water heater replacement, evaluating options for customer-supplied or contractor-supplied unit installation. Inspected the existing gas-fired tank-type water heater, including the galvanized flue, gas supply with shutoff valve, copper water lines, and surrounding basement piping and ductwork, and found no visible corrosion, leaks, or damage. Documented existing conditions and clearances to determine the scope of work for installation.
Nick B.
Nick B. Checked in
Performed an on-site estimate for water heater replacement, evaluating options for customer-supplied or contractor-supplied unit installation. Inspected the existing gas-fired tank-type water heater, including the galvanized flue, gas supply with shutoff valve, copper water lines, and surrounding basement piping and ductwork, and found no visible corrosion, leaks, or damage. Documented existing conditions and clearances to determine the scope of work for installation.
Menomonee Falls, WI 53051
Performed a furnace tune-up, including inspection of the heating system and replacement of the furnace filter. Serviced the Aprilaire whole-home humidifier by replacing the water panel (humidifier pad) and verifying the bypass damper was set to the summer position. Updated the service log label on the supply plenum to record the visit.
Performed a furnace tune-up, including inspection of the heating system and replacement of the furnace filter. Serviced the Aprilaire whole-home humidifier by replacing the water panel (humidifier pad) and verifying the bypass damper was set to the summer position. Updated the service log label on the supply plenum to record the visit.
Nicholas H.
Nicholas H. Checked in
Performed a furnace tune-up, including inspection of the heating system and replacement of the furnace filter. Serviced the Aprilaire whole-home humidifier by replacing the water panel (humidifier pad) and verifying the bypass damper was set to the summer position. Updated the service log label on the supply plenum to record the visit.
Menomonee Falls, WI 53051
Performed a prepaid seasonal furnace tune-up, inspecting the blower assembly, condensate drain tubing and PVC fittings, wiring, and cabinet interior for wear or corrosion. Measured supply air temperature at the ductwork with a digital probe thermometer (117.1°F) to verify proper heating operation, and noted minor corrosion on a wire clip for monitoring.
Performed a prepaid seasonal furnace tune-up, inspecting the blower assembly, condensate drain tubing and PVC fittings, wiring, and cabinet interior for wear or corrosion. Measured supply air temperature at the ductwork with a digital probe thermometer (117.1°F) to verify proper heating operation, and noted minor corrosion on a wire clip for monitoring.
Nick K.
Nick K. Checked in
Performed a prepaid seasonal furnace tune-up, inspecting the blower assembly, condensate drain tubing and PVC fittings, wiring, and cabinet interior for wear or corrosion. Measured supply air temperature at the ductwork with a digital probe thermometer (117.1°F) to verify proper heating operation, and noted minor corrosion on a wire clip for monitoring.
Menomonee Falls, WI 53051
Performed a tune-up on a Lennox high-efficiency boiler, including removal of the front access panel to inspect the interior components, flue piping, and associated copper piping, valves, and pressure gauge. Documented corrosion and discoloration on the stainless steel components, and reinstalled the access panel upon completion.
Performed a tune-up on a Lennox high-efficiency boiler, including removal of the front access panel to inspect the interior components, flue piping, and associated copper piping, valves, and pressure gauge. Documented corrosion and discoloration on the stainless steel components, and reinstalled the access panel upon completion.
Nicholas H.
Nicholas H. Checked in
Performed a tune-up on a Lennox high-efficiency boiler, including removal of the front access panel to inspect the interior components, flue piping, and associated copper piping, valves, and pressure gauge. Documented corrosion and discoloration on the stainless steel components, and reinstalled the access panel upon completion.
Menomonee Falls, WI 53051
Diagnosed a no-heat complaint on a gas furnace where the inducer blower ran but the unit failed to proceed through its ignition sequence. Testing of the control circuit, pressure switch, and gas valve assembly was performed with meter leads installed, and heavy rust and corrosion were found on the cabinet floor, burner compartment shelf, and base, with moisture staining on the surrounding concrete indicating a water or condensate leak. Findings were documented with photos, and the moisture source and corrosion damage should be addressed to prevent further component failure.
Diagnosed a no-heat complaint on a gas furnace where the inducer blower ran but the unit failed to proceed through its ignition sequence. Testing of the control circuit, pressure switch, and gas valve assembly was performed with meter leads installed, and heavy rust and corrosion were found on the cabinet floor, burner compartment shelf, and base, with moisture staining on the surrounding concrete indicating a water or condensate leak. Findings were documented with photos, and the moisture source and corrosion damage should be addressed to prevent further component failure.
Nicholas H.
Nicholas H. Checked in
Diagnosed a no-heat complaint on a gas furnace where the inducer blower ran but the unit failed to proceed through its ignition sequence. Testing of the control circuit, pressure switch, and gas valve assembly was performed with meter leads installed, and heavy rust and corrosion were found on the cabinet floor, burner compartment shelf, and base, with moisture staining on the surrounding concrete indicating a water or condensate leak. Findings were documented with photos, and the moisture source and corrosion damage should be addressed to prevent further component failure.
MENOMONEE FALLS, WI 53051
Performed an on-site estimate for replacement of a 17-year-old Lennox natural gas furnace located in the basement mechanical area, following a recommendation from a prior maintenance visit. Inspected the existing furnace, galvanized plenum and ductwork, whole-house humidifier, and associated PVC piping, documenting equipment condition and layout with photos to support replacement options. The unit and surrounding components showed no visible rust, frost, or major damage, and the work area was assessed for access and installation requirements.
Performed an on-site estimate for replacement of a 17-year-old Lennox natural gas furnace located in the basement mechanical area, following a recommendation from a prior maintenance visit. Inspected the existing furnace, galvanized plenum and ductwork, whole-house humidifier, and associated PVC piping, documenting equipment condition and layout with photos to support replacement options. The unit and surrounding components showed no visible rust, frost, or major damage, and the work area was assessed for access and installation requirements.
Bryan P.
Bryan P. Checked in
Performed an on-site estimate for replacement of a 17-year-old Lennox natural gas furnace located in the basement mechanical area, following a recommendation from a prior maintenance visit. Inspected the existing furnace, galvanized plenum and ductwork, whole-house humidifier, and associated PVC piping, documenting equipment condition and layout with photos to support replacement options. The unit and surrounding components showed no visible rust, frost, or major damage, and the work area was assessed for access and installation requirements.
Menomonee Falls, WI 53051
Performed an on-site estimate for a new natural gas line extension from the existing exterior meter to a pool heater. Inspected the meter and existing 1" gray galvanized piping along the brick wall, identified a 1-1/4" tee as the tie-in point, and documented a proposed pipe route across the landscaped bed with annotated photos. No corrosion or damage was observed at the meter or existing piping.
Performed an on-site estimate for a new natural gas line extension from the existing exterior meter to a pool heater. Inspected the meter and existing 1" gray galvanized piping along the brick wall, identified a 1-1/4" tee as the tie-in point, and documented a proposed pipe route across the landscaped bed with annotated photos. No corrosion or damage was observed at the meter or existing piping.
Nick B.
Nick B. Checked in
Performed an on-site estimate for a new natural gas line extension from the existing exterior meter to a pool heater. Inspected the meter and existing 1" gray galvanized piping along the brick wall, identified a 1-1/4" tee as the tie-in point, and documented a proposed pipe route across the landscaped bed with annotated photos. No corrosion or damage was observed at the meter or existing piping.
Menomonee Falls, WI 53051
Performed an on-site estimate for replacement of an existing gas-fired A.O. Smith ProMax tank-style water heater, inspecting the unit, gas control valve, flue vent, and supply piping with isolation valves. The tank, installed in 2006 and beyond its warranty period, showed no visible leaks, heavy corrosion, or damage, but its age warranted a replacement recommendation. Also reviewed the kitchen sink area and documented existing conditions with photographs.
Performed an on-site estimate for replacement of an existing gas-fired A.O. Smith ProMax tank-style water heater, inspecting the unit, gas control valve, flue vent, and supply piping with isolation valves. The tank, installed in 2006 and beyond its warranty period, showed no visible leaks, heavy corrosion, or damage, but its age warranted a replacement recommendation. Also reviewed the kitchen sink area and documented existing conditions with photographs.
Nick B.
Nick B. Checked in
Performed an on-site estimate for replacement of an existing gas-fired A.O. Smith ProMax tank-style water heater, inspecting the unit, gas control valve, flue vent, and supply piping with isolation valves. The tank, installed in 2006 and beyond its warranty period, showed no visible leaks, heavy corrosion, or damage, but its age warranted a replacement recommendation. Also reviewed the kitchen sink area and documented existing conditions with photographs.
Menomonee Falls, WI 53051
Performed a seasonal tune-up on a vertical gas furnace with an attached evaporator coil cabinet, inspecting the heat exchanger, draft inducer, pressure switch, blower motor, gas valve, and control wiring with the front panel removed. Verified condensate drain and PVC venting connections, checked the evaporator coil cabinet and associated components, and confirmed the Aprilaire air cleaner was in place. No frost, rust, or major damage observed, and the system was left in proper working order.
Performed a seasonal tune-up on a vertical gas furnace with an attached evaporator coil cabinet, inspecting the heat exchanger, draft inducer, pressure switch, blower motor, gas valve, and control wiring with the front panel removed. Verified condensate drain and PVC venting connections, checked the evaporator coil cabinet and associated components, and confirmed the Aprilaire air cleaner was in place. No frost, rust, or major damage observed, and the system was left in proper working order.
Jon Y.
Jon Y. Checked in
Performed a seasonal tune-up on a vertical gas furnace with an attached evaporator coil cabinet, inspecting the heat exchanger, draft inducer, pressure switch, blower motor, gas valve, and control wiring with the front panel removed. Verified condensate drain and PVC venting connections, checked the evaporator coil cabinet and associated components, and confirmed the Aprilaire air cleaner was in place. No frost, rust, or major damage observed, and the system was left in proper working order.
MENOMONEE FALLS, WI 53051
Performed a scheduled HVAC tune-up, inspecting the furnace, plenum, and supply ductwork, along with the flue connection to the water heater and surrounding condensate drain piping, with no evidence of rust, frost, or visible damage. Noted a small hole in the galvanized plenum that should be sealed, and updated the service log sticker on the duct with the completed tune-up entry.
Performed a scheduled HVAC tune-up, inspecting the furnace, plenum, and supply ductwork, along with the flue connection to the water heater and surrounding condensate drain piping, with no evidence of rust, frost, or visible damage. Noted a small hole in the galvanized plenum that should be sealed, and updated the service log sticker on the duct with the completed tune-up entry.
Jon Y.
Jon Y. Checked in
Performed a scheduled HVAC tune-up, inspecting the furnace, plenum, and supply ductwork, along with the flue connection to the water heater and surrounding condensate drain piping, with no evidence of rust, frost, or visible damage. Noted a small hole in the galvanized plenum that should be sealed, and updated the service log sticker on the duct with the completed tune-up entry.
Menomonee Falls, WI 53051
Removed and replaced the existing tub drain assembly, installing a new matte black overflow cover plate and drain stopper, and verified the diverter spout and drain operated properly. Also removed the worn, discolored shower arm and installed a new threaded shower arm at the wall connection, leaving the outlet ready for shower head attachment.
Removed and replaced the existing tub drain assembly, installing a new matte black overflow cover plate and drain stopper, and verified the diverter spout and drain operated properly. Also removed the worn, discolored shower arm and installed a new threaded shower arm at the wall connection, leaving the outlet ready for shower head attachment.
Kyle L.
Kyle L. Checked in
Removed and replaced the existing tub drain assembly, installing a new matte black overflow cover plate and drain stopper, and verified the diverter spout and drain operated properly. Also removed the worn, discolored shower arm and installed a new threaded shower arm at the wall connection, leaving the outlet ready for shower head attachment.
Menomonee Falls, WI 53051
Installed a new Lennox high-efficiency gas furnace with PVC intake/exhaust venting, condensate drain routed to the floor drain, and a whole-house humidifier mounted on the supply plenum, along with an AC system and a 40-gallon power vent water heater. All work was permitted, with electrical connections completed by a licensed electrician, and the system was connected to the existing ductwork and controls.
Installed a new Lennox high-efficiency gas furnace with PVC intake/exhaust venting, condensate drain routed to the floor drain, and a whole-house humidifier mounted on the supply plenum, along with an AC system and a 40-gallon power vent water heater. All work was permitted, with electrical connections completed by a licensed electrician, and the system was connected to the existing ductwork and controls.
Benjamin G.
Benjamin G. Checked in
Installed a new Lennox high-efficiency gas furnace with PVC intake/exhaust venting, condensate drain routed to the floor drain, and a whole-house humidifier mounted on the supply plenum, along with an AC system and a 40-gallon power vent water heater. All work was permitted, with electrical connections completed by a licensed electrician, and the system was connected to the existing ductwork and controls.
Menomonee Falls, WI 53051
Serviced a natural gas Rinnai tankless water heater (model REU-N3237FF-US) for slow hot water delivery. Connected isolation service valves with hoses and performed a full descaling flush of the heat exchanger to remove mineral buildup restricting flow and heat-up time. Restored the unit to normal operation and verified proper performance.
Serviced a natural gas Rinnai tankless water heater (model REU-N3237FF-US) for slow hot water delivery. Connected isolation service valves with hoses and performed a full descaling flush of the heat exchanger to remove mineral buildup restricting flow and heat-up time. Restored the unit to normal operation and verified proper performance.
Kyle L.
Kyle L. Checked in
Serviced a natural gas Rinnai tankless water heater (model REU-N3237FF-US) for slow hot water delivery. Connected isolation service valves with hoses and performed a full descaling flush of the heat exchanger to remove mineral buildup restricting flow and heat-up time. Restored the unit to normal operation and verified proper performance.
Menomonee Falls, WI 53051
Installed a complete new HVAC system, including a new furnace, Lennox condenser on a pad, and F100 filter cabinet, and replaced the thermostat. Adapted the new equipment to the existing PVC condensate piping, flushed the line set, and completed the electrical work under permit. Verified system operation with a manifold gauge set and measured static pressure with a digital manometer to confirm proper airflow performance.
Installed a complete new HVAC system, including a new furnace, Lennox condenser on a pad, and F100 filter cabinet, and replaced the thermostat. Adapted the new equipment to the existing PVC condensate piping, flushed the line set, and completed the electrical work under permit. Verified system operation with a manifold gauge set and measured static pressure with a digital manometer to confirm proper airflow performance.
James P.
James P. Checked in
Installed a complete new HVAC system, including a new furnace, Lennox condenser on a pad, and F100 filter cabinet, and replaced the thermostat. Adapted the new equipment to the existing PVC condensate piping, flushed the line set, and completed the electrical work under permit. Verified system operation with a manifold gauge set and measured static pressure with a digital manometer to confirm proper airflow performance.
Menomonee Falls, WI 53051
Menomonee Falls, WI - Performed diagnostic on a Triangle Tube boiler displaying an E14 fault code, with the unit reaching approximately 130°F before shutting down on a limit condition. Inspected the boiler's top-side controls, wiring terminal connections, and air vent assembly, and noted heavy corrosion on the brass piping fitting at the joint along with debris accumulation across the cabinet surface.
Scott M.
Scott M. Checked in
Performed diagnostic on a Triangle Tube boiler displaying an E14 fault code, with the unit reaching approximately 130°F before shutting down on a limit condition. Inspected the boiler's top-side controls, wiring terminal connections, and air vent assembly, and noted heavy corrosion on the brass piping fitting at the joint along with debris accumulation across the cabinet surface.
Menomonee Falls, WI 53051
Responded to a no-heat call on a gas furnace presenting a flashing red LED fault code with a hot blower compartment. Removed the upper access panel and inspected the inducer motor and blower assembly, wiring harness and connections, gas valve, and flue/vent piping, then performed electrical diagnostics with a clamp meter and referenced the furnace diagnostic code chart to isolate the fault. No visible damage, corrosion, or wiring faults were observed, and the unit was left with the diagnostic findings documented.
Responded to a no-heat call on a gas furnace presenting a flashing red LED fault code with a hot blower compartment. Removed the upper access panel and inspected the inducer motor and blower assembly, wiring harness and connections, gas valve, and flue/vent piping, then performed electrical diagnostics with a clamp meter and referenced the furnace diagnostic code chart to isolate the fault. No visible damage, corrosion, or wiring faults were observed, and the unit was left with the diagnostic findings documented.
Nick K.
Nick K. Checked in
Responded to a no-heat call on a gas furnace presenting a flashing red LED fault code with a hot blower compartment. Removed the upper access panel and inspected the inducer motor and blower assembly, wiring harness and connections, gas valve, and flue/vent piping, then performed electrical diagnostics with a clamp meter and referenced the furnace diagnostic code chart to isolate the fault. No visible damage, corrosion, or wiring faults were observed, and the unit was left with the diagnostic findings documented.
MENOMONEE FALLS, WI 53051
Performed prepaid maintenance tune-ups on two furnaces, including inspection of the inducer blower assembly, pressure switch, condensate drain and PVC venting connections, control module, and associated wiring. Components showed normal wear with no visible rust, frost, or breakage, and the units were left operating properly.
Performed prepaid maintenance tune-ups on two furnaces, including inspection of the inducer blower assembly, pressure switch, condensate drain and PVC venting connections, control module, and associated wiring. Components showed normal wear with no visible rust, frost, or breakage, and the units were left operating properly.
Nick K.
Nick K. Checked in
Performed prepaid maintenance tune-ups on two furnaces, including inspection of the inducer blower assembly, pressure switch, condensate drain and PVC venting connections, control module, and associated wiring. Components showed normal wear with no visible rust, frost, or breakage, and the units were left operating properly.
Menomonee Falls, WI 53051
Replaced the failed evaporator coil under manufacturer parts warranty, including removal of the defective coil, installation of the new coil, and reconnection of the condensate drain and refrigerant lines. Connected manifold gauges to the Lennox condensing unit to evacuate, recharge, and verify proper refrigerant charge and system operation after the repair.
Replaced the failed evaporator coil under manufacturer parts warranty, including removal of the defective coil, installation of the new coil, and reconnection of the condensate drain and refrigerant lines. Connected manifold gauges to the Lennox condensing unit to evacuate, recharge, and verify proper refrigerant charge and system operation after the repair.
Branden B.
Branden B. Checked in
Replaced the failed evaporator coil under manufacturer parts warranty, including removal of the defective coil, installation of the new coil, and reconnection of the condensate drain and refrigerant lines. Connected manifold gauges to the Lennox condensing unit to evacuate, recharge, and verify proper refrigerant charge and system operation after the repair.
Menomonee Falls, WI 53051
Responded to a no-heat call on a gas furnace under 10 years old and inspected the unit, finding the integrated furnace control board and its wiring harness connections to be the likely cause of the failure. The control module was removed for evaluation and diagnostics, with no frost, rust, or physical damage observed on the inducer, gas valve, or blower components. Recommended control board replacement to restore ignition sequence and heating operation.
Responded to a no-heat call on a gas furnace under 10 years old and inspected the unit, finding the integrated furnace control board and its wiring harness connections to be the likely cause of the failure. The control module was removed for evaluation and diagnostics, with no frost, rust, or physical damage observed on the inducer, gas valve, or blower components. Recommended control board replacement to restore ignition sequence and heating operation.
Nicholas H.
Nicholas H. Checked in
Responded to a no-heat call on a gas furnace under 10 years old and inspected the unit, finding the integrated furnace control board and its wiring harness connections to be the likely cause of the failure. The control module was removed for evaluation and diagnostics, with no frost, rust, or physical damage observed on the inducer, gas valve, or blower components. Recommended control board replacement to restore ignition sequence and heating operation.
Menomonee Falls, WI 53051
Performed an in-home estimate for replacement of the natural gas furnace (basement-installed) and air conditioning system, with optional whole-home humidifier addition. Evaluated the existing dial-style thermostat and documented the exterior PVC combustion air intake/exhaust terminations and adjacent vent to assess venting configuration and compatibility with new equipment.
Performed an in-home estimate for replacement of the natural gas furnace (basement-installed) and air conditioning system, with optional whole-home humidifier addition. Evaluated the existing dial-style thermostat and documented the exterior PVC combustion air intake/exhaust terminations and adjacent vent to assess venting configuration and compatibility with new equipment.
Bryan P.
Bryan P. Checked in
Performed an in-home estimate for replacement of the natural gas furnace (basement-installed) and air conditioning system, with optional whole-home humidifier addition. Evaluated the existing dial-style thermostat and documented the exterior PVC combustion air intake/exhaust terminations and adjacent vent to assess venting configuration and compatibility with new equipment.
MENOMONEE FALLS, WI 53051

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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.