
Looking to have your HVAC system inspected or diagnosed with a potential issue? Our team of professionals at The Thielmann Group is available to serve homes in Racine, Wisconsin. We have over 90 years of experience in reputable heating, air conditioning, and other HVAC repair services in our local community. Give our technicians a call at (262) 299-6197 to book an appointment.
Air Conditioning Repair and Tune-Up Services
With the warm summers in Wisconsin, our team understands the importance of a reliable air conditioning unit to keep you and your family comfortable during the blistering heat. Our team of professionals are ready 24/7 to provide emergency air conditioning (AC) repair and air conditioning tune-up services in Wisconsin.
Some warning signs that you may need to have your AC unit inspected can include odd noises coming from your system, only warm air coming from your unit, an unresponsive thermostat, or even an unusual smell coming from your air ducts when your AC turns on.
Air Conditioner Replacement and Installation Services
If your air conditioning unit is over 10 years old, it may be time to consider replacing it. Our team of expert technicians in Racine, Wisconsin are certified and trained in the proper installation of an air conditioning unit to maximize efficiency and lower your utility bills.
Do you know which type of unit is the right one for your home? This can depend on factors such as your budget and the square footage of your home. The Thielmann Group will walk you through choosing the best AC unit to fit your family’s needs!

Ductless Mini-Split Installation and Repair Services
Instead of the traditional heating and cooling dual setup, a ductless mini-split HVAC system can provide both in a more versatile, cost-effective manner. Due to the versatility of a mini-split, they can be tricky to install and get up and running. This is why it is important to contact the experts at The Thielmann Group, who are trained and certified in both installing and repairing ductless mini-split systems.
Furnace Repair and Cleaning Services
No one wants to be left in the cold during winter with a broken heater. Our technicians at The Thielmann Group know this and are ready to come look at your furnace and get to the bottom of the issue.
Our team of HVAC professionals are experts in a wide range of heating systems, focusing on oil furnaces and gas furnaces. We not only offer furnace repair services, but we also provide routine cleanings to extend the life of your system and help prevent any serious issues down the road.
Furnace Installation and Replacement Services
Our team of experts has been providing high-quality furnace installation and replacement services for customers in Racine, Wisconsin since 1929. We work with all kinds of furnaces, including gas furnaces, oil furnaces, and electric furnaces.
We know that your home is your safe space, and you should be comfortable during the winter months, which is why we value top-of-the-line customer service from our certified experts.

Heat Pump System Installation and Maintenance Services
A heat pump HVAC system offers homeowners both heating and cooling options, making it a more popular choice amongst homeowners who are looking for that versatility.
In the winter, it pulls warm air from outside and pumps it into your home, while in the summer it pulls the warm air from inside your home and pumps it back outside. If your heat pump fan is not spinning, contact our professionals in Racine, Wisconsin to receive support. Our technicians specialize in repairing old heat pumps and installing new pumps.
Boiler Installation and Repair Services
If your boiler stops working during the winter, you want fast help to keep your family safe and warm. Our team at The Thielmann Group is ready to help you with installation, repair, and maintenance services for your boiler. Routine maintenance on your boiler can not only extend the life of your system, but it also helps prevent more serious issues or breaks later down the line.
Thermostat Installation and Repair Services
The thermostat is the control panel for your HVAC system, allowing you to set the temperature of your home to the exact degree to make your family comfortable.
Our team of experts offers installation and repair services for traditional thermostats as well as newer smart thermostats. Smart thermostats allow for more customizations to the temperature you want your house set at, for example, if you like it warmer during the day but cooler when you go to bed.

Commercial Heating Maintenance and Installation Services
Not only do we offer our HVAC services for residential properties in the Racine area, but our team also extends support options toward commercial business buildings in the local community.
Our commercial heating services make sure that your business maintains a comfortable working environment for your employees. We also offer routine maintenance to keep your system working at full capacity.
Take Back Your Weekends and Worry Less About HVAC Issues in Your Home
Why reach out to HVAC technicians to work on the system in your home? Not only are our technicians certified to solve any issues regarding your heating and cooling systems, but leaving the work to them allows you the freedom on your weekend to explore the city of Racine and have fun!
The Racine Art Museum offers one of the largest collections of contemporary art pieces in North America. Or if art is not your thing, you could explore the Windpoint Lighthouse near the Great Lakes. When you choose to work with our team of professionals, you will have time to enjoy your weekend instead of worrying about heating and air conditioning issues in your home.
Trusted Plumbing Services in Racine WI
Thielmann Heating, Cooling, and Plumbing offers complete whole-home plumbing services in Racine homeowners can trust. Since 1929, Thielmann has been the name equated with professionalism and timely repairs. Whether you’re dealing with a leaking pipe, an outdated water heater, or a bathroom remodel, our skilled plumbers bring experience and precision to every job. We believe in fixing problems the right way, with solutions that stand up over time.
Our team understands how urgent plumbing issues can be. That’s why we arrive prepared to diagnose and repair the problem quickly, keeping your home running without unnecessary delays. You’ll get clear communication, upfront pricing, and the confidence that your plumbing is handled by professionals who care about quality.
Racine homeowners trust Thielmann for every plumbing need:
- Water Heater Repair, Installation, and Maintenance for Tank or Tankless Units
- Expert Drain Clearing, Hydro Jetting, and Root Removal
- Sewer Line Inspection, Cleaning, and Full Replacement
- Fixture Repairs and New Installations for Kitchens and Bathrooms
- Sump Pump Replacement, Backup Systems, and Routine Testing
- Garbage Disposal Repairs, Upgrades, and Installations
- Plumbing Design and Remodel Support for Home Projects
- Advanced Water Filtration, Softening, and Treatment Options
When you need a name you can trust, Thielmann Heating, Cooling, and Plumbing is only a phone call away. Whether it’s a clogged drain, kitchen faucet installation, or broken pipe, Thielmann has over 95 years of experience. Call our Racine plumbers today at (262) 299-6197 to schedule your next service. We’ll restore your system to proper working order and help prevent future issues before they start.
Our Professionals Will Help You Stay Comfortable During the Fall, Winter, Spring, and Summer Seasons
The seasons in Racine, Wisconsin change dramatically and bring with them substantial weather patterns. In the summer months, temperatures can reach up to around 80 degrees Fahrenheit.
In the winter, the temperature can get as low as 15 degrees Fahrenheit! Regardless of the season, our technicians at The Thielmann Group are available to provide you with superior HVAC repair services to make sure that you and your family are comfortable and happy in your home whatever the weather outside may be.

Book a Heating or Cooling Appointment With Our Team in Racine, Wisconsin
Looking to book an appointment for your heating or cooling? Contact us on our website or give us a call at (262) 299-6197. Our team of licensed technicians in Racine, Wisconsin are here to help you with all of your HVAC repair needs!
Read Reviews by Our Customers
EXCELLENT Based on 542 reviews Posted on Stephanie DolnikOctober 10, 2024Trustindex verifies that the original source of the review is Google. Everyone that I have ever came into contact with there has been helpful and wonderful! I would recommend them to anyone!Posted on Aaron WilhelmJuly 19, 2024Trustindex verifies that the original source of the review is Google. Gave me a quote to replace my 29 year old air conditioner.They weren’t the cheapest but were priced with in reason. Installed it quickly and operates wonderfully. I couldn’t be happier.Posted on Lisa FarrellJuly 19, 2024Trustindex verifies that the original source of the review is Google. My husband and I received 5 quotes from 5 different companies before finally deciding upon Thielmann. Although Thielmann was a bit more expensive, the quality we received was outstanding. We went through the Costco Program (Lesa at Menomonee Falls) and received more rebates in doing so. With that program, we received 10% back on our Lennox Air Conditioner and Lennox Furnace. In addition, we received another 2% back by going through Costco and another 2% back by putting it on the Costco Visa card. At any rate, from, Jason, who came to our house to explain what would be done and provide the estimate, to the installers, Ben and Hayden, who provided excellent care installing our new products. They spent the entire day replacing our new HVAC system. The guys were extremely professional and had great precision. Thank you, Thielmann, for a wonderful HVAC system, great customer service, and an amazing job!Posted on Dave SeefeldtJuly 19, 2024Trustindex verifies that the original source of the review is Google. Professional and fast! Installation looks great!Posted on De'Angelo TatumJuly 15, 2024Trustindex verifies that the original source of the review is Google. 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 they did. I had two AC units installed.Posted on Jay OrcholskiJuly 14, 2024Trustindex verifies that the original source of the review is Google. Wayne helped us find the right equipment. Ben and Hyden were great with the install. Wonderful team, as I would highly recommend The Thielmann Group.Posted on Brad DeFauwJune 26, 2024Trustindex verifies that the original source of the review is Google. I recently had the pleasure of working with The Thielmann Group Heating & Air Conditioning to install a mini-split HVAC system for the second floor of our Cape Cod home in Cedarburg, WI, and I couldn't be more satisfied with the entire experience. Professionalism and Expertise: From the initial consultation to the final installation, the team at The Thielmann Group demonstrated exceptional professionalism and expertise. They took the time to thoroughly assess our home and understand our specific cooling needs. Their knowledgeable staff answered all our questions and provided valuable insights into the benefits of a mini-split system for our unique architectural setup. Quality Installation: The installation process was seamless and efficient. The technicians arrived on time, were courteous, and worked diligently to complete the installation with minimal disruption to our daily routine. They were meticulous in their work, ensuring that everything was installed correctly and neatly. I was particularly impressed with their attention to detail and their commitment to maintaining the aesthetic integrity of our home. Performance: The mini-split HVAC system has exceeded our expectations. The second floor, which used to be uncomfortably warm during the summer months, is now perfectly cool and comfortable. The system operates quietly and efficiently, providing consistent temperature control without any noticeable increase in our energy bills. The Thielmann Group's recommendation and installation of this system have significantly improved our home's overall comfort and livability. Customer Service: The customer service we received was outstanding. The Thielmann Group kept us informed throughout the entire process, from scheduling the installation to following up afterward to ensure everything was working properly. They genuinely cared about our satisfaction and went above and beyond to make sure we were happy with their service. Overall Experience: I highly recommend The Thielmann Group Heating & Air Conditioning to anyone in need of HVAC services. Their professionalism, expertise, and commitment to customer satisfaction are truly commendable. Our experience with them was nothing short of excellent, and we are thrilled with the results of our new mini-split HVAC system. Thank you, Thielmann Group, for your exceptional service and for making our home a more comfortable place to live!Posted on Gail EllenbeckerJune 22, 2024Trustindex verifies that the original source of the review is Google. Quick, through team
Recent Jobs and Reviews in Racine, WI
Job Locations and Reviews
Performed diagnostic inspection on USTR Plus wall-mounted boiler system. Accessed internal components to evaluate operational status, noting temperature reading of 83.6°F on control panel. Inspected copper supply lines, valves, and circulation pump for proper function and confirmed adequate ventilation through ceiling duct connection.
Inspected crawl space plumbing infrastructure and identified significant rust on metal pipe junctions and fittings. Observed moisture damage throughout area with visible mold/mildew on surrounding surfaces. Documented condition of water treatment system components including PVC piping and insulated lines, noting deterioration requiring remediation.
Conducted inspection of kitchen sink plumbing system. Observed properly installed garbage disposal unit with functional PVC drain pipes and P-trap configuration. Noted minor discoloration on pipe joint, but overall system appears intact with no active leaks or damage requiring immediate attention.
Performed routine maintenance on Lennox furnace system. Cleaned significant dust accumulation from blower assembly and housing to improve airflow efficiency. Inspected PVC ventilation connections and verified proper system operation.
Performed comprehensive HVAC tune-up service on residential furnace system, including inspection of electrical components and control systems with access panel removed. Conducted gas pressure testing using digital manometer, which registered at 3.75" WC, confirming proper gas supply within manufacturer specifications. Inspected all connections, ductwork, and ventilation components, verifying system is operating at optimal efficiency with no safety concerns identified.
Conducted routine maintenance inspection on residential hydronic heating system. Checked pressure gauge readings on copper piping network and verified proper operation of circulation pump. System appears to be functioning normally with no leaks detected in the extensive copper piping installation.
Conducted inspection of kitchen sink plumbing system, including double basin stainless steel sink and brushed nickel high-arc faucet with side sprayer attachment. Identified and documented current fixture condition for reference in future service requirements.
Responded to no-heat service call for aging HVAC system (10+ years). Inspection revealed severely fouled evaporator coils with significant dust and debris accumulation, severely restricting airflow and heat transfer efficiency. Performed thorough cleaning of cooling coils to restore proper system operation and improve heating performance.
Responded to no-heat call on system less than 10 years old. Replaced dirty air filter (20 x 25 x 4) with new one. Conducted temperature differential testing with digital thermometer, confirming proper heat output at 93.5°F at supply duct. System now functioning normally.
Performed routine seasonal tune-up on residential furnace system in basement. Inspected all electrical connections, control board, and mechanical components with access panel open. Checked PVC venting pipes and condensate drainage system for proper operation. Unit appears to be in serviceable condition with no major issues observed.
Performed routine HVAC tune-up service on residential furnace system. Completed diagnostic pressure testing with dual port manometer, obtaining readings of 350/359, confirming system is operating within manufacturer specifications. Inspected internal components with access panel removed, verified proper connection of PVC exhaust/intake piping, and examined electrical connections and condensate drainage system.
Performed routine HVAC tune-up service including electrical inspection with multimeter (SC260) showing 0.45 AC voltage reading within normal parameters. Conducted pressure testing using dual port manometer with readings of 154 on both ports, verifying proper system pressure balance. All measurements were within manufacturer specifications, confirming system is operating efficiently.
Successfully installed and configured a Honeywell Home ProSeries digital thermostat, ensuring proper mounting and connection to the HVAC system. The unit is functioning correctly, displaying accurate temperature readings and responding to temperature adjustment commands.
Performed comprehensive inspection and tune-up on customer's furnace system. Opened cabinet to check internal components including wiring, control board, motors, and exhaust connections - all found to be in normal operating condition with no signs of damage. Inspected ductwork seams and metal surfaces, which showed only normal wear without significant deterioration.
Completed foundation inspection and cleanup around newly installed HVAC unit. Removed debris from drainage channel and reapplied erosion control straw around foundation perimeter and condensate drainage area. Verified proper installation of drain pan and checked gas meter connections.
Performed comprehensive inspection of existing furnace system, revealing aging components including deteriorating circuit board, worn motor assembly, and compromised gas valve. Recommended full HVAC replacement with new high-efficiency unit, including installation of proper PVC venting configuration with appropriate angles and clearances for optimal airflow and condensate management. Installed new filtration system to ensure improved air quality and system longevity.
Successfully installed new high-efficiency furnace in basement utility area with proper metal ductwork connections sealed with foil tape at all joints. Completed all electrical connections and performed startup test to verify proper system operation according to manufacturer specifications.
Responded to no-heat call for aging furnace system (10+ years old). Upon inspection of the unit, identified rusted components and corrosion at the base. Performed diagnostic testing on control board and wiring connections, cleaned corroded terminals, and restored proper electrical continuity to restore heating function. System is now operational but showing signs of age-related wear that may require replacement consideration in near future.
Completed routine tune-up on Lennox furnace system. Performed comprehensive inspection of all components including heat exchanger, burners, and electrical connections. System is operating within manufacturer specifications with no issues detected. Cleaned and tested blower motor, flame sensor, and condensate drain line to ensure optimal performance for the heating season.
Performed system tune-up service on HVAC equipment. Conducted electrical diagnostics using SC680 multimeter, measuring amperage draw at 3.6 μA DC. Temperature verification with PDT650 thermometer confirmed supply air temperature of 120.2°F, which is within normal operating parameters.