
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) 315-3067 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) 315-3067 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) 315-3067. 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
Racine, WI at a glance
Thielmann Heating, Cooling & Plumbing has completed 20 jobs in Racine, WI between June 2026 and October 2026.
The most recent job was on October 9, 2026.
Thielmann Heating, Cooling & Plumbing has completed 89 jobs in Racine, WI in the last 12 months.
Job Locations and Reviews
Completed installation of 50-gallon tanked water heater in basement utility area. Unit was positioned against concrete block wall with proper clearances maintained, connected to existing copper supply lines and pressure tank system using brass fittings and valves, and secured all piping connections per code requirements.
Conducted comprehensive piping estimate for hot water distribution system and gas stove installation. Assessed existing plumbing infrastructure including aged copper supply lines, brass fittings, and gas piping connections with blue shutoff valve. Documented current condition of threaded black iron gas pipe with buildup near water heater, photographed multiple pipe junctions showing patina and discoloration, and evaluated compatibility of existing system for proposed gas appliance hookup.
Conducted comprehensive plumbing assessment for sump pump installation in basement area showing significant moisture damage and water staining along walls and floor. Property currently enrolled in municipal pump program with no existing sump crock present. Evaluated unfinished basement space with exposed brick walls, concrete flooring, and visible water damage indicators including dark staining at base of walls and floor discoloration. Prepared complete estimate covering installation of new sump crock and pump system to address drainage concerns and prevent further water intrusion in lower level.
Conducted comprehensive estimate for replacement of 30+ year old residential water heater. Assessed existing plumbing infrastructure including supply lines, pressure regulator, shut-off valves, and gas/water connections. Documented current installation configuration with photographic evidence showing vertical pipe routing, pressure regulation system with gauge, and mounting arrangement on concrete block wall. Provided information regarding available military discount options and scheduled early morning arrival window for future installation work.
Completed full HVAC system installation including new furnace and air conditioning unit in interior utility space. Installed air handler with proper refrigerant line routing using copper tubing and filter-drier component, secured all electrical connections with appropriate cable management. Post-installation callback addressed reported natural gas odor in equipment room and air handler operating independently of furnace. Performed system diagnostics, verified all gas connections for leaks, inspected thermostat wiring and control circuits to resolve improper equipment cycling. Ensured condensate drainage system properly connected to floor drain. All equipment installed per manufacturer specifications with professional routing of refrigerant lines and electrical conduit. System tested and verified for proper operation of both heating and cooling components.
Responded to service call for clogged kitchen sink. Upon arrival, performed thorough inspection of the drain assembly and P-trap configuration beneath the sink. Examined all plumbing connections, including the white PVC P-trap, metal threaded fittings, and associated drainage components. Inspected supply lines, flexible hoses, and electrical connections in the under-sink area. Documented existing plumbing configuration with photographs showing brass fittings, pipe insulation, mounting hardware, and the overall condition of the drainage system. All components were assessed for proper installation, potential blockages, and signs of wear or deterioration.
# HVAC Ductwork Installation Completed comprehensive ductwork installation in an interior space undergoing renovation. Installed horizontal galvanized sheet metal trunk line with proper seaming and joints, along with vertical duct chase for distribution. Addressed heavily contaminated existing filter assembly that was obscured by significant dust and debris accumulation, requiring thorough cleaning and system preparation before integration with new ductwork. All components properly secured and sealed to ensure optimal airflow and system efficiency.
Conducted on-site assessment for water heater replacement in basement utility area. Evaluated existing water heater unit showing signs of age and potential moisture exposure issues, with surrounding area displaying significant water damage and deterioration to walls and ceiling surfaces. Customer requested new unit be elevated off ground level to prevent rust and corrosion from floor moisture contact. Documented current installation configuration including connected PVC piping, ductwork connections, and existing mechanical systems layout. Provided estimate for replacement water heater installation with elevated platform mounting to address moisture concerns and extend equipment lifespan.
Conducted on-site plumbing estimate for relocating washing machine from basement utility area to upstairs kitchen location. Assessed existing basement plumbing infrastructure including water supply lines, drain connections, and venting requirements. Evaluated proposed upstairs installation site to determine routing path for new hot and cold water supply lines and drainage piping necessary to accommodate appliance relocation.
Conducted on-site assessment for HVAC system replacement in residential basement. Evaluated existing 25-year-old natural gas furnace and air conditioning system, both currently operational but nearing end of service life. Documented equipment locations, existing ductwork configuration, electrical connections, and outdoor condenser placement. Provided comprehensive replacement estimate for complete heating and cooling system upgrade.
Responded to service call for non-operational sump pump with no sound or function. Upon arrival, performed diagnostic inspection of the pump system and motor assembly. Documented existing conditions of the equipment and components for service records.
Responded to service call for older, larger boiler with significant water leakage throughout the system. Upon arrival, performed diagnostic inspection and discovered severely corroded pipe joint with complete separation at connection point, causing active water leak. The deteriorated piping infrastructure showed extensive rust, oxidation, and age-related wear across multiple components. Documented the compromised plumbing connections and assessed overall system condition. Additionally observed water damage to interior ceiling and walls, indicating the leak had been ongoing. Provided assessment findings and discussed repair versus replacement options given the extent of corrosion and age of the equipment.
Completed installation of new gas line for dryer in basement laundry area. Replaced existing copper piping with steel piping to meet code requirements and ensure safe gas delivery to appliance. Routed flexible gas connector from supply line to dryer location, securing all connections and verifying proper operation of the system.
Coordinated with municipal water department to shut off water supply at the street main. Installed new shut-off valves before and after the water meter to establish functional main water control for the residence. Repiped water lines above the water heater using copper pipe and installed new dedicated shut-off valve for water heater isolation. Replaced supply valves for downstairs bathroom fixtures and reconnected to existing CPVC distribution lines. Replaced supply valves for upstairs bathroom fixtures with new quarter-turn ball valves. Cut access opening in ceiling to reach upstairs cold water line valve location and installed access panel for future maintenance. All valve replacements utilized quarter-turn ball valve technology for improved reliability and ease of operation. All new water supply piping installed with Type L copper pipe and brass fittings to ensure code compliance and system longevity.
Completed estimate for installation of natural gas line from basement to outdoor grill location. Assessed existing gas infrastructure in basement crawl space, including current gas piping, shut-off valves, and routing options through floor joists. Evaluated exterior access point at wooden deck area where deck boards would require temporary removal to facilitate piping installation beneath deck structure to reach grill location. Documented existing conditions including current gas line configuration with yellow corrugated flexible connectors (CSST), rigid black iron pipe, and shut-off valve locations. Photographed proposed routing path through basement joists and exterior deck framing to determine material requirements and labor scope for approximately 10-12 feet of gas line installation.
Replaced failed HVAC blower motor showing severe corrosion and deterioration with new OEM motor assembly. Transferred wiring connections from old motor to new unit, secured mounting hardware, and verified proper operation of system.
Completed routine cooling season maintenance visit per membership agreement. Performed comprehensive A/C tune-up including inspection of outdoor condenser unit, electrical components, and capacitor assembly. All wiring connections were checked for proper termination, and system was evaluated for operational efficiency. Unit exterior and surrounding area were noted to be in acceptable condition with adequate clearance for airflow.
Completed routine cooling system maintenance visit as part of recurring membership agreement. Inspected and evaluated air filter condition, noting visible dirt accumulation and discoloration across pleated media indicating normal usage. Measured supply air temperature at 54.5°F at ductwork, confirming proper cooling operation and system performance within acceptable parameters.
Completed warranty replacement of failed inverter board on residential air conditioning system. Unit was accessed, defective inverter board was removed and replaced with new OEM component under existing 10-year parts and 1-year labor warranty coverage. System was tested following installation to verify proper operation and performance of all components. Photos documented equipment condition and completed work.
Responded to service call for water filtration system installation consultation. Upon arrival, assessed existing plumbing infrastructure including PVC and copper supply lines with wall-mounted supports. Evaluated current water treatment equipment setup featuring dual-tank filtration system with pressure gauge monitoring panel and control valves. Documented existing conditions and plumbing configuration to provide accurate estimate for whole-house water filtration installation.