
Since 1929, the professionals at Theilmann Group have delivered quality HVAC, heating, and air conditioning repair services for homes and businesses in Kenosha, Wisconsin. We offer residents in the area with timely HVAC repair services and competitive pricing.
Our team of professionals is committed to excellence and promises 100% satisfaction with 5-star customer service. Contact our technicians by phone at (262) 299-6197 to book an appointment.
Professional Air Conditioning Repair Services
The hot and humid summer days of Wisconsin need the reliable cooling that an air conditioner provides. Our team provides extensive air conditioning repair services in the local area and has the training necessary to fix your system.
Several signs you may need immediate repairs include:
- Frequent short-cycling
- Inconsistent temperatures
- Tripped breakers or blown fuses
- Warm air from the vents
- Inconsistent home temperatures
- Leaking or puddling water
- Loud noises or strange smells
The Thielmann Group offers our same-day service to get your air conditioning repaired
Air Conditioner Replacement And Installation Services
On average, air conditioners have a 10 to 15 year lifespan. If you notice that the performance is not as good as it used to be, or that the frequency of repairs seems to be increasing, it may be time for a new one.
Our team provides reputable air conditioning and HVAC installation services in Kenosha, Wisconsin and offers the top brands in the industry. We will perform superior air conditioning installation services to get your house back to feeling cool.
Ductless Mini-Split Services
Get the best of both worlds with a ductless mini-split system. This versatile system does not require ducts and provides heating and cooling solutions, which is ideal for the freezing winters and warm summers of Wisconsin.
Ductless Installation and Replacement
Your mind will be at ease knowing your ductless system will last a long time, thanks to our professional ductless mini-split installation. The Theilmann Group provides the expertise and precision to install or replace your ductless mini-split system.
Same-Day Ductless Mini-Split Repair
Mini-splits, while offering some advantages that traditional HVAC heating and cooling systems don’t, may still have some issues over time. Our reliable, hardworking team can make quick repairs the same day! Give us a call today to restore your ductless mini-split, and you won’t have to worry about being uncomfortable for very long.
Furnace Repair and Tune-Up Services
Having heat is crucial for your home during the harsh winters in Kenosha, Wisconsin. The last thing you want to do is freeze while waiting for your furnace to be repaired. Our team of NATE-certified technicians are dedicated to providing same-day furnace repair to our customers.

Furnace Installation and Replacement Services
In Kenosha and the surrounding southeast Wisconsin area, winters are downright cruel. Making sure you have a furnace that is working properly is vital for you and your loved ones. We bring consumers expert furnace installation and replacement services so you can stay warm and comfortable all season.
Call the professionals at the Thielmann Group and have us replace and install your system with a new gas, electric, or oil furnace that suits your needs.
Heat Pump System Installation Services
With the unpredictable fluctuation of temperatures in Kenosha, Wisconsin, a heat pump is an ideal choice thanks to its dual-system operation. It extracts warmth from the outside air and brings it indoors during the winter. In the summer, it reverses this process by removing heat from inside your home and releasing it outside.
If your heat pump is not working correctly, contact our team to receive assistance. We offer convenient repair options for heat pumps, along with seamless heat pump system installation services.
Boiler Installation and Repair Services
We know that keeping you and your loved ones comfortable during the colder months is high on your priority list. Our team of professionals provides high-quality, boiler repairs, HVAC services, and installation the same day, giving you well-deserved peace of mind.
Thermostat Installation, Replacement and Repair Services
The thermostat is the command center of your HVAC system, allowing you precise control over the temperature for increased convenience and efficiency. It lets you control your results for your heating and cooling needs while helping you manage your budget. If your thermostat is not working properly, our team is available to help. We install and repair all brands of thermostats, making sure everything is working correctly for your home.
If you need a new thermostat, we can help you with that too. Our professionals will help you find a thermostat that fits your needs. After installation, we will test your system and customize it to your preferences and schedule.

Commercial Heating Maintenance and Replacement Services
We don’t only serve homeowners in the Kenosha and southeast Wisconsin areas. We also lend our HVAC repair services and expertise to commercial properties.
Our team of technicians offer commercial heating services for organizations in the local area. Commercial buildings also need heat during the winter, and require a higher level of performance to maintain, including the ductwork.
You can rely on our team to provide the experience and knowledge to handle almost any commercial heating service you may need, from routine maintenance to full replacement and installation.
Exceptional Plumbing Services in Kenosha WI
When plumbing accidents happen, you need a team that arrives quickly and gets the repair completed the right way. Thielmann Heating, Cooling, and Plumbing has been a trusted source of plumbing services in Kenosha since 1929. We deliver services homeowners need with an excellence our customers have come to depend on. Whether you are dealing with a small leak or need a complete whole-home repiping, our experts have the knowledge and experience to fix it fast, giving you back your peace of mind.
Plumbing problems can’t wait, and no amount of time going by is going to cause the problem to fix itself. That’s why we pride ourselves in providing prompt service, honest pricing, and long-;lasting repairs. Every Kenosha plumber from Thielmann is trained to find the source of the problem, give you your best options up front, and complete the work as if they were working on their own house. With Thielmann on your side, you get access to:
- Drain cleaning to remove buildup and prevent backups.
- Water heater repairs and new system installs, including tankless models.
- Pipe repair and replacement for leaks or corrosion.
- Fixture installation for sinks, toilets, tubs, and showers.
- Water softening and filtration systems to improve water quality.
- Garbage disposal service and replacement.
- Sump pump maintenance and installation to stop flooding.
The time to schedule your plumbing repair in Kenosha is the moment you notice a problem. Early detection can help prevent a minor fix from turning into a costly repair. Call (262) 299-6197 today to book your plumbing repair, installation, or inspection and keep your home’s water systems in top shape.
Our Professionals Will Keep Your House Comfortable During the Fall, Winter, Spring, and Summer Seasons
Living in Kenosha, Wisconsin, presents a variety of different conditions as the seasons change. Lucky for you, our team of professionals offer trustworthy heating and air conditioning repair services all year round to keep you comfortable.
Summer Season
The average high temperature in the local area throughout the summer season is 80 degrees Fahrenheit. The area receives a large number of brutally hot days per year. There are around 6 days per year when the temperature reaches above 90 degrees Fahrenheit.
To prepare for the warm weather, it’s crucial to hire a professional to clean and maintain your air conditioner. Our technicians are equipped with the tools necessary to fix bent air conditioner fins and replace defective parts.
Winter Season
The average temperature throughout the winter season is 15 degrees Fahrenheit. There are also around 128 days per year below 32 degrees Fahrenheit. To keep your house safe and habitable when the temperature is extremely low, our professionals will work with you to maintain and repair your furnace.
The weather in the local Kenosha, WI area can present a variety of challenges for your furnace, boiler, air conditioner, or heat pump system. Our team will inspect and fix your HVAC system to ensure you have access to warm air throughout the winter and cool air during the summer months.

Have Fun in Kenosha, Wisconsin Instead of Troubleshooting Heating and Air Conditioning Issues
When you hire our team of expert technicians to troubleshoot your broken air conditioner or HVAC system, it gives you and your family more time to explore the fun local attractions in Kenosha, Wisconsin and the surrounding areas this weekend.
Let out your inner beast while visiting the Dinosaur Discovery Museum. Dino lovers of all ages will be captivated as they learn more about these giant reptiles of the past. What’s Wisconsin without cheese? Check out the delicious Mars Cheese Castle! It has a large variety of cheeses, meats, and popcorn to try, and it also has some free samples.
For those who are more active, play some disc golf on one of several disc golf courses in the local area. If biking is more your speed, there are over 130 miles of bike trails. Whatever you decide, you will return home knowing you will be comfortable all year because of our hard-working team of experts.
Book a Heating or Cooling Appointment With Our Team in Kenosha
We have been proudly servicing residents in Kenosha and the surrounding southeast Wisconsin areas for nearly 100 years. Whether you are attempting to diagnose a furnace issue or you require a brand-new air conditioner, we are here to offer you peace of mind by handling it for you. Call our team of HVAC contractors at (262) 299-6197 to schedule a service today.
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 Kenosha, WI
Job Locations and Reviews
Installed black iron gas piping system with appropriate elbows and fittings, including both horizontal and vertical runs secured against concrete block wall. Completed all connections with proper threading and ensured system integrity through thorough leak testing of all joints and connection points.
Conducted inspection of existing water heater installation in mechanical room. Evaluated PVC venting system, supply piping, and valve assembly. Documented current plumbing configuration including horizontal PVC pipe with metal bracket supports and functioning valve assembly connected to flexible supply line. Photos taken of complete system to reference for estimate preparation.
Responded to no-heat call for aging system (10+ years). Inspection revealed significant corrosion and rust damage to control board housing and electrical components. Moisture intrusion evident throughout unit with water stains on interior surfaces. Replaced corroded control board and associated wiring to restore heating functionality.
Installed new gas piping in basement utility area, routing lines through existing wooden structural framework. Connected flexible metallic gas line to main supply and secured all pipe junctions and fittings according to code requirements. Performed pressure testing to verify system integrity and ensure safe operation.
Installed a new tanked water heater in the basement utility area, connecting it to the existing copper supply lines with proper valves. Ensured all connections were secure and leak-free, with appropriate venting to meet current code requirements.
Performed scheduled maintenance on HVAC system with Patriot Carbon UV Air Purifier. Replaced severely clogged air filter which showed significant dust and debris accumulation. Inspected germicidal UV light system and verified proper operation of all connected ductwork and components.
Conducted inspection of existing under-sink drainage system, noting water stains and discoloration indicating previous leakage. Observed PVC piping assembly with multiple elbow joints connecting to circular drain. Evaluated condition of electrical connections running alongside plumbing components for potential sump pump installation. Recommended replacement of deteriorated sections and installation of properly sized sump pump system to prevent future water accumulation.
Completed installation of new water service in residential property. Work included connecting main water line to existing distribution system and installing necessary components in the utility area. Verified proper function of all connections with no leaks observed during pressure testing.
Conducted inspection of existing water heater system in basement utility area. Observed aging galvanized pipe connections to dark blue water heater tank with signs of surface corrosion at junction fittings. Noted potential issues with the cross-shaped junction and valve assembly. Provided estimate for replacement of deteriorating components and recommended upgrading to code-compliant PVC piping system for improved longevity and performance.
Conducted inspection of bathroom plumbing fixtures revealing valve handles with clear plastic caps and associated piping in need of attention. Identified significant moisture damage around tub/shower connection points with visible mold/mildew accumulation and rust formation on drain components. Documented deterioration requiring remediation to prevent further water damage and fixture failure.
Installed new water heating system with proper copper piping network and connections. System features digital control panel and Energy Star certification. Installed condensate pump system with collection bucket to manage discharge from the unit.
Responded to no-heat call for aging Goodman furnace system located in basement. Upon inspection, identified clogged condensate drain line and failing ignition control module causing heat failure. Cleaned drain line, replaced ignition module, and tested system through multiple heating cycles to confirm proper operation with normal flame characteristics and adequate airflow through ductwork.
Diagnosed no heat issue on Burnham boiler system less than 10 years old. Inspected manual shutoff valves, pressure regulator, and copper piping configuration. Restored heating functionality by adjusting pressure settings and verifying proper operation of all system components.
Inspected and diagnosed shower valve system showing significant corrosion and mineral buildup. Documented damaged cartridge mechanism with visible wear on mounting components. Recommended complete valve replacement to address potential water pressure issues and prevent future leaks. Current installation shows evidence of water damage around escutcheon plate.
Completed installation of a utility sink with chrome faucet in customer's space, connecting supply lines to existing hot and cold water valves. Verified proper seating of sink on metal legs and ensured access panel remains functional for future maintenance needs.
Responded to no heat call for aging HVAC system (10+ years). Diagnosed faulty circuit board in Zone-Artic control unit with several failed capacitors and damaged electrical components. Replaced control board and verified proper system operation. System now heating correctly with all zones functioning as designed.