Your Local Heating & Cooling Experts since 1929
Welcome to The Thielmann Group, your trusted choice for superior HVAC, cooling, and heating services in Oconomowoc, Wisconsin. Our top priority is customer satisfaction, and we go above and beyond to ensure you receive the best service. From our team of Nate-certified technicians to our friendly office staff, we strive to deliver exceptional results.
As a Lennox Premier Dealer, Daikin and Carrier Dealer we take pride in offering products from top-of-the-line manufacturers. This prestigious designation sets us apart as one of the best heating and air conditioning contractors in Southeastern Wisconsin. Whether you require residential or commercial services, you can trust our team of professionals to get the job done right.
We understand the importance of a comfortable home or workplace, and that’s why we are committed to providing reliable heating and cooling solutions year-round.
For HVAC services in Oconomowoc, look no further than The Thielmann Group. Contact us online or call (262) 299-6197 to get started.
Heating Services
For all your Oconomowoc heating needs, turn to The Thielmann Group. Since 1929, our expert team ensures your equipment is properly sized and installed to the highest standards. We are confident that our heating products, installation, and services are the best in Waukesha County.
Lennox furnaces, known for their energy efficiency and quiet operation, coupled with our factory-trained and NATE-certified installation professionals, guarantee peace of mind with every new furnace or heating system.
If you encounter any heating problems in the local Oconomowoc area, our technicians will perform furnace repair services to promptly restore your heat. We understand the urgency of a “no heat” situation during harsh Wisconsin winters.
Our NATE-certified specialists are available 24/7 for emergencies, capable of servicing and repairing all makes and models. Don’t hesitate to contact us for any heating or furnace repair needs in the local Oconomowoc, WI area.
Air Conditioner Repair and Installation Services
If you’re looking for a new air conditioning system for your home or business, we have the perfect solution to keep you cool and fit your budget.
Our team provide innovative heating and cooling services for customers in Oconomowoc, Wisconsin and will ensure a flawless installation. Your new system will be perfectly sized to your space. Our technicians are factory trained and NATE-certified, equipped with years of knowledge to install your new central air conditioner or ductless system with superior workmanship.
We work on all types of cooling systems, including:
- Air conditioners: We can work on all models of air conditioning systems for residential and commercial properties.
- Heat pumps: We can repair, replace, or maintain energy-efficient heat pumps that deliver warm air inside and outside the home.
- Ductless mini-splits: We can service ductless HVAC units that provide total climate control for single rooms.
Our expert Oconomowoc AC repair specialists are here to service all major brands of cooling equipment. And don’t worry, if your air conditioner ever decides to give out at the worst possible moment, our 24-hour emergency service is always available to get your cooling system up and running at its best again in no time!
We proudly offer top-notch Lennox, Daikin, Carrier, Bryant and Mitsubishi air conditioning products, known for their industry-leading performance and energy efficiency. With these systems, you’ll stay comfortable during hot Southeastern Wisconsin summers while saving on energy bills. Give us a call for all your air conditioning needs in Oconomowoc, WI.
Indoor Air Quality
At The Thielmann Group we take pride in ensuring clean and healthy indoor environments for homes and businesses. From humidity control and air purification to duct cleaning and more, we offer HVAC solutions to improve your indoor air quality. Trust us to create a fresh and comfortable atmosphere for you and your loved ones.
- Air purifiers
- Humidifiers
- Dehumidifiers
Why Choose The Thielmann Group
Since 1929, our team has been the go-to choice for top-quality residential and commercial HVAC services in Oconomowoc and beyond. Our NATE-certified technicians can service all brands, install Lennox-brand units, provide 24/7 emergency care, and more. Rest assured, we have you covered for all your HVAC needs! Plus, we offer upfront pricing, financing options, special deals, and a job well done.
Contact us online or call (262) 299-6197 to schedule the HVAC services you need.
Read Reviews by Our Customers
EXCELLENTBased on 542 reviewsTrustindex verifies that the original source of the review is Google.Stephanie DolnikOctober 10, 2024Everyone that I have ever came into contact with there has been helpful and wonderful! I would recommend them to anyone!Trustindex verifies that the original source of the review is Google.Aaron WilhelmJuly 19, 2024Gave 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.Trustindex verifies that the original source of the review is Google.Lisa FarrellJuly 19, 2024My 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!Trustindex verifies that the original source of the review is Google.Dave SeefeldtJuly 19, 2024Professional and fast! Installation looks great!Trustindex verifies that the original source of the review is Google.De'Angelo TatumJuly 15, 2024I 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.Trustindex verifies that the original source of the review is Google.Jay OrcholskiJuly 14, 2024Wayne helped us find the right equipment. Ben and Hyden were great with the install. Wonderful team, as I would highly recommend The Thielmann Group.Trustindex verifies that the original source of the review is Google.Brad DeFauwJune 26, 2024I 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!Trustindex verifies that the original source of the review is Google.Gail EllenbeckerJune 22, 2024Quick, through team