Professional HVAC Repair Services in Milwaukee, WI

Thielmann - Milwaukee - Art Museum 14

When it comes to keeping your home comfortable year-round in Milwaukee, Wisconsin, having reliable heating, air conditioning, and HVAC systems should not be overlooked. If you are looking for quality home services, you are in good company.

Our team of contractors offers industry-leading air conditioning, heating, and HVAC repair services in Milwaukee and will work with you to ensure your home stays cozy all year long. Trust the Thielmann Group to get the job done right. Contact our professionals at (262) 299-6197 to book an appointment and receive assistance with a defective HVAC system.

Air Conditioning Repair Services

Our air conditioning repair services are designed to address any issues such as strange noises and insufficient cooling. If you experience rising energy bills, unusual odors, loud noises, or hot air blowing out of your unit, contact our professionals for support.

Air Conditioner Replacement and Installation Services

A malfunctioning air conditioner is the last thing you want to deal with during a hot and humid summer in Milwaukee.. Our team helps you select the right unit for your home’s size and cooling needs.

Air conditioners are not meant to last forever. You might need an air conditioner replacement service if your unit is experiencing frequent breakdowns, blowing uneven air, or is over 10 years old. If you notice any of these problems, consider contacting us for reliable AC replacement services.

Sometimes, repairs aren’t sufficient. If your air conditioner is beyond repair or you are looking to upgrade to a more energy-efficient model, the Thielmann Group offers replacement and installation services to suit your needs.

Ductless Mini-Split Services

From warm summer days to cold winter nights, there is no temperature a ductless mini-split HVAC system can’t handle. For homes without ductwork or those seeking more flexible cooling options, ductless mini-split systems are a great solution. Our professionals provide installation, repair, and maintenance services for ductless mini-split systems in Milwaukee and Southeastern Wisconsin.

Furnace Repair and Tune-Up Services

Going through a winter in Wisconsin without a functioning furnace is like wearing sandals in the snow—it’s not smart. Luckily, our team offers a variety of HVAC services for local residents in Milwaukee including furnace repair options.

We will make sure your heating system functions properly when you need it most. From minor repairs to major maintenance, there is nothing our technicians can’t handle. Contact us if your furnace is not producing heat, leaking fluids, making strange noises, or short cycling.

Furnace Installation and Replacement Services

If it’s time to replace your old furnace or install a new one, our team offers expert furnace installation services tailored to your heating needs.

Our professionals will guide you through the selection process, ensuring you choose a furnace that meets your efficiency and comfort requirements, and handle the installation with precision and care.

Milwaukee, Wisconsin HVAC Repair Services

Heat Pump System Installation and Maintenance Services

Did you know a heat pump system heats and cools your home? This heating and cooling versatility makes heat pumps a popular choice for residents in the local Milwaukee area.

Heat pumps offer year-round comfort, consistent temperature control, and improved energy efficiency for homeowners in Southeastern Wisconsin. Plus, they are much better for the environment.

Boiler Installation and Repair Services

As energy costs continue to rise, many homeowners are turning to energy-efficient boilers. Boilers are designed to heat water which is then dispersed as steam through your radiators.

Whether your old system is aging itself out or you need maintenance, our team of technicians have you covered with comprehensive boiler repair services. Get in touch with us if you notice common boiler problems like foul odors, strange noises, a yellow pilot light, or insufficient heat.

Ductwork and Indoor Air Quality Services

Old ductwork can impact your indoor air quality, especially if it develops cracks or gaps. Unfortunately, ductwork problems happen, and when they do, our team is available to provide you with superior air duct repair services to restore air circulation in your house.

Signs like uneven cooling, rising energy bills, loud noises, and the presence of mold all warrant a call to our technicians. Our team offers trustworthy ductwork and HVAC services for homeowners in Milwaukee, Wisconsin and will work with you to restore airflow throughout your system.

Milwaukee, Wisconsin HVAC Repair Services

Enjoy the Local Attractions in Milwaukee and Worry Less About Heating and Air Conditioning Issues

One of the advantages of working with our team of professionals is having more time to explore the local Milwaukee, Wisconsin area. Our team will fix your broken furnace or HVAC system to ensure you are able to enjoy your weekend with friends or family in Milwaukee. The city boasts an array of fun attractions for visitors and residents.

Take a stroll along the Milwaukee Riverwalk, where you can enjoy views of the city skyline. Between the shops and restaurants, you can check out the Milwaukee Art Museum and the famous Harley-Davidson Museum.

For a taste of the rich brewing heritage in Milwaukee, don’t miss a visit to Best Place at the Historic Pabst Brewery, where you can take a guided tour and sample some of Wisconsin’s classic brews. Sports enthusiasts can also catch a game at the iconic Fiserv Forum or check out the American Family Field.

Whatever you choose to do, you can come home to comfort thanks to our team. Our crew will work hard to keep your house safe and comfortable throughout the summer or winter seasons.

Milwaukee, Wisconsin HVAC Repair Services

Book a Heating or Cooling Appointment With Our Team in Milwaukee

Milwaukee is one of America’s greatest cities, and we are proud to have been servicing its residents for nearly 100 years. Whether you require a brand-new air conditioner or assistance diagnosing a furnace issue, we’re here to assist you.

Call our team of HVAC contractors at (262) 299-6197 to schedule a service today and get peace of mind knowing your heating and air conditioning systems are in good hands.

Read Reviews by Our Customers

Recent Jobs and Reviews in Milwaukee, WI

Job Locations and Reviews

Conducted onsite inspection of existing water heater system in basement utility area. Unit shows visible corrosion and mineral buildup on connecting pipes. Recommended full replacement of aging water heater with appropriate capacity unit to ensure reliable hot water supply and improved energy efficiency.
Conducted onsite inspection of existing water heater system in basement utility area. Unit shows visible corrosion and mineral buildup on connecting pipes. Recommended full replacement of aging water heater with appropriate capacity unit to ensure reliable hot water supply and improved energy efficiency.
Jason G.
Jason G. Checked in
Conducted onsite inspection of existing water heater system in basement utility area. Unit shows visible corrosion and mineral buildup on connecting pipes. Recommended full replacement of aging water heater with appropriate capacity unit to ensure reliable hot water supply and improved energy efficiency.
Milwaukee, WI 53218
Milwaukee, WI - Inspected interior components of furnace system, focusing on the blower motor assembly and associated electrical connections. Found all wiring (red, white, green, yellow) properly connected to the control board and gas valve. Confirmed system is functioning correctly with proper ON/OFF cycling.
Shane P.
Shane P. Checked in
Inspected interior components of furnace system, focusing on the blower motor assembly and associated electrical connections. Found all wiring (red, white, green, yellow) properly connected to the control board and gas valve. Confirmed system is functioning correctly with proper ON/OFF cycling.
Milwaukee, WI 53202
Performed routine maintenance on basement-located boiler system. Inspected all copper piping, connections, valves, and fittings for proper operation and possible leaks. Verified equipment was functioning within normal parameters and all safety controls were operational.
Performed routine maintenance on basement-located boiler system. Inspected all copper piping, connections, valves, and fittings for proper operation and possible leaks. Verified equipment was functioning within normal parameters and all safety controls were operational.
Jacob A.
Jacob A. Checked in
Performed routine maintenance on basement-located boiler system. Inspected all copper piping, connections, valves, and fittings for proper operation and possible leaks. Verified equipment was functioning within normal parameters and all safety controls were operational.
Milwaukee, WI 53211
Conducted inspection of Triangle Tube Prestige boiler system. Pressure gauge reading was verified at approximately 1.1 bar (15 psi), confirming proper system pressure within normal operating range. Visual inspection of all connected PVC venting and copper supply lines revealed no leaks or irregularities.
Conducted inspection of Triangle Tube Prestige boiler system. Pressure gauge reading was verified at approximately 1.1 bar (15 psi), confirming proper system pressure within normal operating range. Visual inspection of all connected PVC venting and copper supply lines revealed no leaks or irregularities.
Ron B.
Ron B. Checked in
Conducted inspection of Triangle Tube Prestige boiler system. Pressure gauge reading was verified at approximately 1.1 bar (15 psi), confirming proper system pressure within normal operating range. Visual inspection of all connected PVC venting and copper supply lines revealed no leaks or irregularities.
Milwaukee, WI 53207
Performed comprehensive tune-up inspection on aging HVAC system, focusing on blower motor assembly and control components. Identified corrosion on metal panels and housing. Examined electrical connections and wiring (white, yellow, green) throughout unit, with particular attention to circuit board integrity and motor functionality. System shows signs of extended service life with visible wear on components.
Performed comprehensive tune-up inspection on aging HVAC system, focusing on blower motor assembly and control components. Identified corrosion on metal panels and housing. Examined electrical connections and wiring (white, yellow, green) throughout unit, with particular attention to circuit board integrity and motor functionality. System shows signs of extended service life with visible wear on components.
Shane P.
Shane P. Checked in
Performed comprehensive tune-up inspection on aging HVAC system, focusing on blower motor assembly and control components. Identified corrosion on metal panels and housing. Examined electrical connections and wiring (white, yellow, green) throughout unit, with particular attention to circuit board integrity and motor functionality. System shows signs of extended service life with visible wear on components.
Milwaukee, WI 53212
Installed new Carrier furnace unit with properly connected galvanized ductwork and PVC venting system. System tested with UEi EM152 manometer showing 3.32" WC gas pressure, confirming proper operational parameters. Installation completed with all connections secure and system functioning according to manufacturer specifications.
Installed new Carrier furnace unit with properly connected galvanized ductwork and PVC venting system. System tested with UEi EM152 manometer showing 3.32" WC gas pressure, confirming proper operational parameters. Installation completed with all connections secure and system functioning according to manufacturer specifications.
James P.
James P. Checked in
Installed new Carrier furnace unit with properly connected galvanized ductwork and PVC venting system. System tested with UEi EM152 manometer showing 3.32" WC gas pressure, confirming proper operational parameters. Installation completed with all connections secure and system functioning according to manufacturer specifications.
MILWAUKEE, WI 53207
Performed routine tune-up on customer's HVAC system. Inspected heat exchanger and internal components finding light dust accumulation. Examined electrical control panel and wiring connections, confirming proper operation of digital thermostat and control systems. All components functioning within normal parameters after service.
Performed routine tune-up on customer's HVAC system. Inspected heat exchanger and internal components finding light dust accumulation. Examined electrical control panel and wiring connections, confirming proper operation of digital thermostat and control systems. All components functioning within normal parameters after service.
Kevin P.
Kevin P. Checked in
Performed routine tune-up on customer's HVAC system. Inspected heat exchanger and internal components finding light dust accumulation. Examined electrical control panel and wiring connections, confirming proper operation of digital thermostat and control systems. All components functioning within normal parameters after service.
Milwaukee, WI 53208
Milwaukee, WI - Performed scheduled preventive maintenance on HVAC system. Inspected internal components including motor assembly, control board, and electrical connections. Identified and documented all wiring conditions and mechanical interfaces to ensure system integrity per maintenance agreement specifications.
Kevin P.
Kevin P. Checked in
Performed scheduled preventive maintenance on HVAC system. Inspected internal components including motor assembly, control board, and electrical connections. Identified and documented all wiring conditions and mechanical interfaces to ensure system integrity per maintenance agreement specifications.
Milwaukee, WI 53210
Milwaukee, WI - Performed comprehensive tune-up on customer's HVAC system, which included inspection of furnace unit and adjacent components in utility area. Checked all connections, verified proper drainage through PVC ventilation system, and confirmed equipment was functioning within normal parameters. All systems were left in good working condition with no issues detected.
Shane P.
Shane P. Checked in
Performed comprehensive tune-up on customer's HVAC system, which included inspection of furnace unit and adjacent components in utility area. Checked all connections, verified proper drainage through PVC ventilation system, and confirmed equipment was functioning within normal parameters. All systems were left in good working condition with no issues detected.
Milwaukee, WI 53225
Performed standard maintenance tune-up on HVAC system. Measured supply air temperature at 110.8°F and verified electrical parameters with SC680 multimeter, confirming 51.68 μF capacitor reading. System functioning within normal parameters after service.
Performed standard maintenance tune-up on HVAC system. Measured supply air temperature at 110.8°F and verified electrical parameters with SC680 multimeter, confirming 51.68 μF capacitor reading. System functioning within normal parameters after service.
Carlos R
Carlos R Checked in
Performed standard maintenance tune-up on HVAC system. Measured supply air temperature at 110.8°F and verified electrical parameters with SC680 multimeter, confirming 51.68 μF capacitor reading. System functioning within normal parameters after service.
Milwaukee, WI 53222
Completed comprehensive inspection of existing HVAC system including indoor air handler/furnace unit in mechanical room and outdoor heat pump/condenser units. Snow accumulation was observed on outdoor equipment, particularly heavy on one unit. Recommended full system replacement due to visible aging components, deteriorating ductwork connections, and equipment inefficiency evidenced by condition assessment.
Completed comprehensive inspection of existing HVAC system including indoor air handler/furnace unit in mechanical room and outdoor heat pump/condenser units. Snow accumulation was observed on outdoor equipment, particularly heavy on one unit. Recommended full system replacement due to visible aging components, deteriorating ductwork connections, and equipment inefficiency evidenced by condition assessment.
Jason G.
Jason G. Checked in
Completed comprehensive inspection of existing HVAC system including indoor air handler/furnace unit in mechanical room and outdoor heat pump/condenser units. Snow accumulation was observed on outdoor equipment, particularly heavy on one unit. Recommended full system replacement due to visible aging components, deteriorating ductwork connections, and equipment inefficiency evidenced by condition assessment.
Milwaukee, WI 53223
Completed installation of PVC venting system for Lennox furnace unit in basement, including proper routing through exterior siding with appropriate elbow joints and connections. System includes dual intake/exhaust PVC pipes properly secured and connected to the furnace unit, ensuring code-compliant ventilation for safe and efficient operation.
Completed installation of PVC venting system for Lennox furnace unit in basement, including proper routing through exterior siding with appropriate elbow joints and connections. System includes dual intake/exhaust PVC pipes properly secured and connected to the furnace unit, ensuring code-compliant ventilation for safe and efficient operation.
Aaron A.
Aaron A. Checked in
Completed installation of PVC venting system for Lennox furnace unit in basement, including proper routing through exterior siding with appropriate elbow joints and connections. System includes dual intake/exhaust PVC pipes properly secured and connected to the furnace unit, ensuring code-compliant ventilation for safe and efficient operation.
MILWAUKEE, WI 53207
Milwaukee, WI - Diagnosed and serviced a no-heat issue in a system with Rasidan control box. Inspected wiring connections, identifying loose connections at the control board which were causing intermittent heating failures. Reconnected and secured all wiring harnesses, cleaned contacts, and verified proper operation through multiple heating cycles. System now functioning normally with consistent ignition and heat output.
Nicholas H.
Nicholas H. Checked in
Diagnosed and serviced a no-heat issue in a system with Rasidan control box. Inspected wiring connections, identifying loose connections at the control board which were causing intermittent heating failures. Reconnected and secured all wiring harnesses, cleaned contacts, and verified proper operation through multiple heating cycles. System now functioning normally with consistent ignition and heat output.
Milwaukee, WI 53202
Milwaukee, WI - Inspected exterior ventilation components and confirmed proper installation of exhaust vent piping through the brick wall. Verified secure pipe connections and appropriate elbow/T-joint configuration according to manufacturer specifications. All ventilation components now functioning correctly with no obstructions or leaks detected.
Shane P.
Shane P. Checked in
Inspected exterior ventilation components and confirmed proper installation of exhaust vent piping through the brick wall. Verified secure pipe connections and appropriate elbow/T-joint configuration according to manufacturer specifications. All ventilation components now functioning correctly with no obstructions or leaks detected.
Milwaukee, WI 53222
Responded to no heat complaint on Goodman system installed in 2023. Diagnostic inspection revealed severely restricted airflow due to plugged filter and debris accumulation at intake. Service included filter replacement and clearing intake obstruction, which restored proper system operation and heating function.
Responded to no heat complaint on Goodman system installed in 2023. Diagnostic inspection revealed severely restricted airflow due to plugged filter and debris accumulation at intake. Service included filter replacement and clearing intake obstruction, which restored proper system operation and heating function.
Shane P.
Shane P. Checked in
Responded to no heat complaint on Goodman system installed in 2023. Diagnostic inspection revealed severely restricted airflow due to plugged filter and debris accumulation at intake. Service included filter replacement and clearing intake obstruction, which restored proper system operation and heating function.
Milwaukee, WI 53224
Diagnosed Armstrong Air furnace showing no heat condition. Inspection revealed gas valve stuck in closed position, preventing proper ignition. Removed and replaced defective gas valve to restore heat function. System tested and now operating normally.
Diagnosed Armstrong Air furnace showing no heat condition. Inspection revealed gas valve stuck in closed position, preventing proper ignition. Removed and replaced defective gas valve to restore heat function. System tested and now operating normally.
Josh V.
Josh V. Checked in
Diagnosed Armstrong Air furnace showing no heat condition. Inspection revealed gas valve stuck in closed position, preventing proper ignition. Removed and replaced defective gas valve to restore heat function. System tested and now operating normally.
Milwaukee, WI 53209
Completed winter maintenance tune-up on customer's furnace. Inspected ductwork which showed some minor buildup and slight discoloration on interior surfaces. System is functioning properly with no operational issues identified.
Completed winter maintenance tune-up on customer's furnace. Inspected ductwork which showed some minor buildup and slight discoloration on interior surfaces. System is functioning properly with no operational issues identified.
Todd H.
Todd H. Checked in
Completed winter maintenance tune-up on customer's furnace. Inspected ductwork which showed some minor buildup and slight discoloration on interior surfaces. System is functioning properly with no operational issues identified.
Milwaukee, WI 53222
Performed scheduled winter maintenance on Lennox Elite HVAC system. Inspected unit, verified proper operation and documented current condition with photos. All systems functioning within normal parameters with no issues requiring repair or adjustment.
Performed scheduled winter maintenance on Lennox Elite HVAC system. Inspected unit, verified proper operation and documented current condition with photos. All systems functioning within normal parameters with no issues requiring repair or adjustment.
Todd H.
Todd H. Checked in
Performed scheduled winter maintenance on Lennox Elite HVAC system. Inspected unit, verified proper operation and documented current condition with photos. All systems functioning within normal parameters with no issues requiring repair or adjustment.
Milwaukee, WI 53223
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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.