Heating & Cooling Services | Brookfield, WI | AC Replacement

Heating, Air Conditioning, and Plumbing Repair Services in Brookfield, WI

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Your HVAC system helps keep your home comfortable regardless of the weather outside. From snowy winters to blazing summers, your heating and air conditioning help keep your family comfortable and safe from the elements. 

Our team of HVAC professionals at The Thielmann Group Heating and Cooling understands this and is dedicated to providing outstanding customer service and HVAC service in Brookfield that will keep your system running smoothly for a long time. We offer heating and air conditioning services for every style of HVAC system, and we are ready to serve our local community in the Brookfield, Wisconsin area! 

Air Conditioning Repair and Tune-Up Services

As temperatures rise over the summer, your air conditioning keeps you and your family cool and comfortable. Our team of HVAC professionals at The Thielmann Group offers air conditioning service in Brookfield, WI, to keep your system in peak condition and save you money on more expensive repairs later down the road. We tailor our services to meet your home’s needs while staying within budget.

AC Replacement and Installation Services

Maintaining a comfortable temperature in your home during the blazing Brookfield summers is important in keeping your family safe and comfortable. As Brookfield’s trusted HVAC experts, we handle every aspect of your AC replacement project and understand the importance of a well-functioning air conditioner, which is why we offer specialized air conditioner replacement and installation services to keep your HVAC system running at its highest potential throughout the summer. 

Ductless Mini-Split Installation and Repair Services

While the traditional HVAC setup requires a separate air conditioning unit and furnace to provide heat and cool air, a ductless mini-split HVAC system provides heating and cooling solutions with only one system. It can be a versatile heating and cooling option for both the summer and winter. The Thielmann Group offers installation and repair services for ductless mini-split HVAC systems to keep your home cool and comfortable.

AC maintenance

Furnace Repair and Cleaning Services

Your furnace keeps your home nice and toasty even when there is snow outside your window. Our team at The Thielmann Group offers furnace repair in Brookfield, WI, including repairs and cleanings to keep your furnace running smoothly. Yearly furnace cleanings can help prolong the lifespan of your furnace and prevent more costly repairs later down the road.

Furnace Installation and Replacement Services

A reliable furnace can help keep your family warm even during the snowy winter months. Our team of professional furnace technicians offers an expert and thorough furnace service in Brookfield, WI that includes same-day services and customer-focused solutions that will last a lifetime. Whether replacing your outdated furnace or installing a brand new furnace, our team at The Thielmann Group is ready to help every step of the way.

Heat Pump System Installation Services

Heat pumps offer an alternative to the traditional furnace method of heating your home. Our team of professionals at The Thielmann Group offers upfront pricing, free estimates, and a customized installation plan to keep the process as smooth as possible and provide results that will last a lifetime. We offer heat pump installation services to keep your home heated—even if snow is on the ground outside. 

Boiler Installation and Repair Services

Boilers don’t just provide your home with warm water during the winter months, but they can also heat your home as part of your HVAC system. We offer boiler installation and repair services to ensure your home remains heated and comfortable.

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Thermostat Installation and Repair Services 

The thermostat in your home is like the brain of your HVAC system, controlling whether the heating or cooling system is running and the temperature your home needs to maintain. A good-quality thermostat gives you extensive control over the temperature of your home and endless customization options. The Thielmann Group offers thermostat installation and repair services for both smart thermostats and traditional thermostat systems.

Commercial Heating Maintenance and Installation Services

Your business or other commercial building requires reliable heating and cooling to keep work running smoothly and employees comfortable every season. Our HVAC technicians at The Thielmann Group are trained and certified to provide top-notch heating and cooling services for commercial buildings in the Brookfield area. We also offer air quality services including repairing faulty ductwork.

Have Fun this Weekend Instead of Worrying About HVAC Issues in Your Home

Leaving the dirty work to the professionals at The Thielmann Group ensures that your HVAC system is in good hands, but also gives you the freedom to enjoy your weekend with your family and friends instead of worrying about HVAC issues in your home. If you want to explore family entertainment, swing by the Silverspot Theater in downtown Brookfield. While we work on your home, take a break and enjoy some delicious tacos at the Belair Cantina. Enjoy your time off, and leave the heating and cooling services for your Brookfield home to us!

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Our Professionals Will Keep Your Home Comfortable During the Autumn, Winter, Spring, and Summer Seasons

As the seasons change, so do your HVAC needs. Summers in Brookfield can get as cold as 10 degrees Fahrenheit, and your heating needs to maintain a comfortable temperature in your home. Also, in the summer, your air conditioning keeps you comfortable and protected from the blazing temperatures of up to 90 degrees Fahrenheit Our team of experts at The Thielmann Group is ready to work with you on any repair or maintenance services to keep your HVAC system in peak condition to withstand the weather outside your door.

Book a Heating or Cooling Appointment With Our Team in Brookfield

Are you looking to schedule an appointment with one of our expert HVAC technicians? Contact The Thielmann Group Heating & Cooling online or over the phone at (626) 600-3896 for a free estimate or to schedule a visit. Our team is ready and available to answer any questions or concerns you may have. Whether it is your heating or air conditioning, our team is ready to get the job done.

Read Reviews by Our Customers

Recent Jobs and Reviews in Brookfield, WI

Job Locations and Reviews

Conducted comprehensive assessment of existing HVAC system and mechanical infrastructure for replacement estimate. Evaluated current heating and cooling equipment configuration, including inspection of mechanical room plumbing connections, expansion tank installation, and associated piping systems. Documented electrical service panel specifications and capacity to determine compatibility requirements for new HVAC equipment installation.
Conducted comprehensive assessment of existing HVAC system and mechanical infrastructure for replacement estimate. Evaluated current heating and cooling equipment configuration, including inspection of mechanical room plumbing connections, expansion tank installation, and associated piping systems. Documented electrical service panel specifications and capacity to determine compatibility requirements for new HVAC equipment installation.
Dave V.
Dave V. Checked in
Conducted comprehensive assessment of existing HVAC system and mechanical infrastructure for replacement estimate. Evaluated current heating and cooling equipment configuration, including inspection of mechanical room plumbing connections, expansion tank installation, and associated piping systems. Documented electrical service panel specifications and capacity to determine compatibility requirements for new HVAC equipment installation.
Brookfield, WI 53005
Completed comprehensive estimate for full HVAC system replacement including gas furnace and outdoor condensing unit. Evaluated existing basement-installed furnace with exposed burner assembly and outdoor air conditioner positioned on concrete pad against stone foundation exterior. Assessed current system configuration including refrigerant line routing, electrical disconnect placement, PVC venting, and equipment accessibility for replacement planning.
Completed comprehensive estimate for full HVAC system replacement including gas furnace and outdoor condensing unit. Evaluated existing basement-installed furnace with exposed burner assembly and outdoor air conditioner positioned on concrete pad against stone foundation exterior. Assessed current system configuration including refrigerant line routing, electrical disconnect placement, PVC venting, and equipment accessibility for replacement planning.
Chris M.
Chris M. Checked in
Completed comprehensive estimate for full HVAC system replacement including gas furnace and outdoor condensing unit. Evaluated existing basement-installed furnace with exposed burner assembly and outdoor air conditioner positioned on concrete pad against stone foundation exterior. Assessed current system configuration including refrigerant line routing, electrical disconnect placement, PVC venting, and equipment accessibility for replacement planning.
Brookfield, WI 53005
Completed inspection and maintenance of residential sump pump system located in basement utility area. Verified proper operation of sump pump basin, checked PVC discharge piping for secure mounting and adequate flow capacity, and inspected electrical connections for safety and functionality. All components found to be in working order with pump cycling appropriately and discharge line properly secured to prevent water backup issues.
Completed inspection and maintenance of residential sump pump system located in basement utility area. Verified proper operation of sump pump basin, checked PVC discharge piping for secure mounting and adequate flow capacity, and inspected electrical connections for safety and functionality. All components found to be in working order with pump cycling appropriately and discharge line properly secured to prevent water backup issues.
Dan E.
Dan E. Checked in
Completed inspection and maintenance of residential sump pump system located in basement utility area. Verified proper operation of sump pump basin, checked PVC discharge piping for secure mounting and adequate flow capacity, and inspected electrical connections for safety and functionality. All components found to be in working order with pump cycling appropriately and discharge line properly secured to prevent water backup issues.
Brookfield, WI 53005
Completed full furnace installation including electrical control board wiring and low-voltage connections to terminal block. Secured unit to concrete pad using mounting anchors and established proper grounding. All wiring connections tested and verified operational, control board energized successfully, and system commissioned per manufacturer specifications.
Completed full furnace installation including electrical control board wiring and low-voltage connections to terminal block. Secured unit to concrete pad using mounting anchors and established proper grounding. All wiring connections tested and verified operational, control board energized successfully, and system commissioned per manufacturer specifications.
Kevin C.
Kevin C. Checked in
Completed full furnace installation including electrical control board wiring and low-voltage connections to terminal block. Secured unit to concrete pad using mounting anchors and established proper grounding. All wiring connections tested and verified operational, control board energized successfully, and system commissioned per manufacturer specifications.
Brookfield, WI 53005
Completed HVAC system replacement in basement utility space, installing new air handler unit with updated ductwork connections. The existing equipment was removed and replaced with a modern silver-finished air handler, complete with foil insulation panels and properly configured supply and return duct connections to the ceiling plenum, ensuring efficient airflow distribution throughout the residence.
Completed HVAC system replacement in basement utility space, installing new air handler unit with updated ductwork connections. The existing equipment was removed and replaced with a modern silver-finished air handler, complete with foil insulation panels and properly configured supply and return duct connections to the ceiling plenum, ensuring efficient airflow distribution throughout the residence.
Dave V.
Dave V. Checked in
Completed HVAC system replacement in basement utility space, installing new air handler unit with updated ductwork connections. The existing equipment was removed and replaced with a modern silver-finished air handler, complete with foil insulation panels and properly configured supply and return duct connections to the ceiling plenum, ensuring efficient airflow distribution throughout the residence.
Brookfield, WI 53045
Completed comprehensive tune-up on HVAC system over 10 tons, including temperature diagnostics showing supply air at 122°F during heating mode operation. Identified and documented ceiling staining near equipment area indicating previous moisture intrusion or condensate issue, recommended monitoring for any active leakage during future service intervals.
Completed comprehensive tune-up on HVAC system over 10 tons, including temperature diagnostics showing supply air at 122°F during heating mode operation. Identified and documented ceiling staining near equipment area indicating previous moisture intrusion or condensate issue, recommended monitoring for any active leakage during future service intervals.
Todd H.
Todd H. Checked in
Completed comprehensive tune-up on HVAC system over 10 tons, including temperature diagnostics showing supply air at 122°F during heating mode operation. Identified and documented ceiling staining near equipment area indicating previous moisture intrusion or condensate issue, recommended monitoring for any active leakage during future service intervals.
Brookfield, WI 53005
Brookfield, WI - Completed warranty inspection of HVAC condensate drain system. Verified proper installation and sealing of PVC drain line penetration through exterior brick wall, confirmed adequate slope for drainage, and ensured sealant application around wall penetration meets manufacturer specifications to prevent water intrusion and maintain system efficiency.
Makinze C.
Makinze C. Checked in
Completed warranty inspection of HVAC condensate drain system. Verified proper installation and sealing of PVC drain line penetration through exterior brick wall, confirmed adequate slope for drainage, and ensured sealant application around wall penetration meets manufacturer specifications to prevent water intrusion and maintain system efficiency.
Brookfield, WI 53005
Brookfield, WI - Responded to service call for heating system issue. Upon inspection, accessed furnace interior and diagnosed faulty gas valve assembly causing system malfunction. Replaced defective gas valve control unit, reconnected all electrical wiring harnesses including yellow, black, and purple wire connections, and verified proper operation of safety controls including non-water overheat protection. Tested system operation and confirmed unit firing properly with all components functioning within manufacturer specifications.
Adriel H.
Adriel H. Checked in
Responded to service call for heating system issue. Upon inspection, accessed furnace interior and diagnosed faulty gas valve assembly causing system malfunction. Replaced defective gas valve control unit, reconnected all electrical wiring harnesses including yellow, black, and purple wire connections, and verified proper operation of safety controls including non-water overheat protection. Tested system operation and confirmed unit firing properly with all components functioning within manufacturer specifications.
Brookfield, WI 53005
# Plumbing Site Visit Summary

Responded to service call regarding water damage and potential leak investigation. Upon arrival, conducted visual inspection of affected areas revealing significant water staining and discoloration on concrete flooring near wall junction, indicating recent or ongoing moisture intrusion. Accessed crawlspace to trace source of water damage and inspected plumbing infrastructure within floor joist cavity. Identified compromised supply line with visible signs of deterioration and moisture accumulation on pipe insulation. Documented conditions with photographic evidence showing extent of floor damage and location of affected plumbing components within structural cavity. Recommended immediate pipe replacement and remediation of water-damaged flooring to prevent further structural deterioration and potential mold growth.
# Plumbing Site Visit Summary

Responded to service call regarding water damage and potential leak investigation. Upon arrival, conducted visual inspection of affected areas revealing significant water staining and discoloration on concrete flooring near wall junction, indicating recent or ongoing moisture intrusion. Accessed crawlspace to trace source of water damage and inspected plumbing infrastructure within floor joist cavity. Identified compromised supply line with visible signs of deterioration and moisture accumulation on pipe insulation. Documented conditions with photographic evidence showing extent of floor damage and location of affected plumbing components within structural cavity. Recommended immediate pipe replacement and remediation of water-damaged flooring to prevent further structural deterioration and potential mold growth.
Kyle L.
Kyle L. Checked in
# Plumbing Site Visit Summary Responded to service call regarding water damage and potential leak investigation. Upon arrival, conducted visual inspection of affected areas revealing significant water staining and discoloration on concrete flooring near wall junction, indicating recent or ongoing moisture intrusion. Accessed crawlspace to trace source of water damage and inspected plumbing infrastructure within floor joist cavity. Identified compromised supply line with visible signs of deterioration and moisture accumulation on pipe insulation. Documented conditions with photographic evidence showing extent of floor damage and location of affected plumbing components within structural cavity. Recommended immediate pipe replacement and remediation of water-damaged flooring to prevent further structural deterioration and potential mold growth.
Brookfield, WI 53045
Conducted inspection of HVAC system components, documenting copper refrigerant lines, drainage PVC piping with proper elbow joints, and galvanized metal ductwork. Identified normal dust accumulation on metal surfaces requiring standard maintenance, and verified all connection points and fasteners are secure for system replacement estimate.
Conducted inspection of HVAC system components, documenting copper refrigerant lines, drainage PVC piping with proper elbow joints, and galvanized metal ductwork. Identified normal dust accumulation on metal surfaces requiring standard maintenance, and verified all connection points and fasteners are secure for system replacement estimate.
Michael Y.
Michael Y. Checked in
Conducted inspection of HVAC system components, documenting copper refrigerant lines, drainage PVC piping with proper elbow joints, and galvanized metal ductwork. Identified normal dust accumulation on metal surfaces requiring standard maintenance, and verified all connection points and fasteners are secure for system replacement estimate.
Brookfield, WI 53045
Installed new garbage disposal unit with proper PVC drain connections and secured all supply lines with fasteners for optimal function. Verified all plumbing connections were leak-free and disposal was operating correctly after installation.
Installed new garbage disposal unit with proper PVC drain connections and secured all supply lines with fasteners for optimal function. Verified all plumbing connections were leak-free and disposal was operating correctly after installation.
Kyle L.
Kyle L. Checked in
Installed new garbage disposal unit with proper PVC drain connections and secured all supply lines with fasteners for optimal function. Verified all plumbing connections were leak-free and disposal was operating correctly after installation.
Brookfield, WI 53005
Completed installation of new bathroom vanity with integrated sink and faucet. Connected supply lines and drain assembly with PVC trap. Ensured proper alignment and verified no leaks after installation.
Completed installation of new bathroom vanity with integrated sink and faucet. Connected supply lines and drain assembly with PVC trap. Ensured proper alignment and verified no leaks after installation.
Jack L.
Jack L. Checked in
Completed installation of new bathroom vanity with integrated sink and faucet. Connected supply lines and drain assembly with PVC trap. Ensured proper alignment and verified no leaks after installation.
Brookfield, WI 53005
Brookfield, WI - Conducted diagnostic testing on furnace electrical components using multimeter probe to verify voltage at wire terminal connections. Inspected wiring harness and circuit board for proper connectivity and functionality during troubleshooting process.
Rich L.
Rich L. Checked in
Conducted diagnostic testing on furnace electrical components using multimeter probe to verify voltage at wire terminal connections. Inspected wiring harness and circuit board for proper connectivity and functionality during troubleshooting process.
Brookfield, WI 53045
Responded to service call regarding water accumulation on furnace unit. Inspection revealed condensation buildup on the evaporator coil. Cleaned condensate drain line, which was partially blocked, and verified proper drainage. Visual inspection of ductwork showed no issues with insulation or airflow.
Responded to service call regarding water accumulation on furnace unit. Inspection revealed condensation buildup on the evaporator coil. Cleaned condensate drain line, which was partially blocked, and verified proper drainage. Visual inspection of ductwork showed no issues with insulation or airflow.
Kevin P.
Kevin P. Checked in
Responded to service call regarding water accumulation on furnace unit. Inspection revealed condensation buildup on the evaporator coil. Cleaned condensate drain line, which was partially blocked, and verified proper drainage. Visual inspection of ductwork showed no issues with insulation or airflow.
Brookfield, WI 53005
Performed scheduled prepaid HVAC maintenance visit. Inspected and documented condition of the existing air filter, which appeared to be in good condition with proper filtration efficiency. Checked Honeywell Home ProSeries thermostat operation, confirming current temperature reading of 69 degrees and proper functionality of all control features.
Performed scheduled prepaid HVAC maintenance visit. Inspected and documented condition of the existing air filter, which appeared to be in good condition with proper filtration efficiency. Checked Honeywell Home ProSeries thermostat operation, confirming current temperature reading of 69 degrees and proper functionality of all control features.
Ron B.
Ron B. Checked in
Performed scheduled prepaid HVAC maintenance visit. Inspected and documented condition of the existing air filter, which appeared to be in good condition with proper filtration efficiency. Checked Honeywell Home ProSeries thermostat operation, confirming current temperature reading of 69 degrees and proper functionality of all control features.
Brookfield, WI 53005
Performed routine maintenance on customer's furnace system. Conducted comprehensive inspection of internal components including gas valve, motor assembly and control board. Utilized Testo 310 analyzer to verify proper combustion efficiency and safe operation parameters.
Performed routine maintenance on customer's furnace system. Conducted comprehensive inspection of internal components including gas valve, motor assembly and control board. Utilized Testo 310 analyzer to verify proper combustion efficiency and safe operation parameters.
Adriel H.
Adriel H. Checked in
Performed routine maintenance on customer's furnace system. Conducted comprehensive inspection of internal components including gas valve, motor assembly and control board. Utilized Testo 310 analyzer to verify proper combustion efficiency and safe operation parameters.
Brookfield, WI 53005
Performed routine HVAC tune-up service which included inspection and replacement of air filter with new pleated filter. Conducted electrical system diagnostics using SC680 multimeter, checking voltage readings (0.33V) at the control board to verify proper electrical connections and component functionality.
Performed routine HVAC tune-up service which included inspection and replacement of air filter with new pleated filter. Conducted electrical system diagnostics using SC680 multimeter, checking voltage readings (0.33V) at the control board to verify proper electrical connections and component functionality.
Makinze C.
Makinze C. Checked in
Performed routine HVAC tune-up service which included inspection and replacement of air filter with new pleated filter. Conducted electrical system diagnostics using SC680 multimeter, checking voltage readings (0.33V) at the control board to verify proper electrical connections and component functionality.
Brookfield, WI 53005
Brookfield, WI - Performed comprehensive inspection of existing water treatment system, including water softener unit and brine tank. System appears functional with properly connected PVC piping and operational control valve. Identified need for regular maintenance and replacement of filtration media to maintain optimal water quality and system efficiency.
Dan E.
Dan E. Checked in
Performed comprehensive inspection of existing water treatment system, including water softener unit and brine tank. System appears functional with properly connected PVC piping and operational control valve. Identified need for regular maintenance and replacement of filtration media to maintain optimal water quality and system efficiency.
Brookfield, WI 53045
Performed warranty service on Daikin HVAC system. Inspected condensate drain line showing water staining and verified proper securement of PVC pipe to metal framework using rubber gasket clamp. Checked electrical connections and mechanical components including valve/regulator assembly for proper operation.
Performed warranty service on Daikin HVAC system. Inspected condensate drain line showing water staining and verified proper securement of PVC pipe to metal framework using rubber gasket clamp. Checked electrical connections and mechanical components including valve/regulator assembly for proper operation.
Todd H.
Todd H. Checked in
Performed warranty service on Daikin HVAC system. Inspected condensate drain line showing water staining and verified proper securement of PVC pipe to metal framework using rubber gasket clamp. Checked electrical connections and mechanical components including valve/regulator assembly for proper operation.
Brookfield, WI 53045
Replaced corroded brass valve assembly on concrete block wall plumbing system. Installed new faucet and reconnected copper supply lines, PVC drainage, and all associated fittings. Tested for proper operation and confirmed cessation of previously observed rust-colored water leakage.
Replaced corroded brass valve assembly on concrete block wall plumbing system. Installed new faucet and reconnected copper supply lines, PVC drainage, and all associated fittings. Tested for proper operation and confirmed cessation of previously observed rust-colored water leakage.
Gabriel S.
Gabriel S. Checked in
Replaced corroded brass valve assembly on concrete block wall plumbing system. Installed new faucet and reconnected copper supply lines, PVC drainage, and all associated fittings. Tested for proper operation and confirmed cessation of previously observed rust-colored water leakage.
Brookfield, WI 53005

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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.