Your Local Heating and Cooling Experts since 1929

The weather in West Bend can pose a challenge to maintaining home comfort. Whether the temperatures get extremely high or low, it’s important to ensure that your HVAC system can handle it.
Our team of professionals are available to help you with all your HVAC repair needs in the local West Bend, Wisconsin area. With over 90 years of experience, we can ensure that your systems are working efficiently so that you can enjoy comfortable temperatures in your home or business.
For HVAC and air quality services in West Bend, look no further than The Thielmann Group. Contact us online or call (262) 299-6197 to get started.
Heating Services
Looking for reliable heating solutions in West Bend? Look no further than The Thielmann Group. With our expert team and top-notch services, we guarantee the highest standards in equipment sizing and installation. Our heating products, including energy-efficient and quiet Lennox furnaces, ensure your peace of mind.
- Furnace repair
- Furnace installation
- Heat pump system repair
- Heat pump installation
- Boiler repair and replacement
- Packaged units
- Commercial heating systems
Our licensed technicians offer trustworthy HVAC and furnace repair services in West Bend, Wisconsin and will restore your heat promptly. We understand the urgency of “no heat” situations during harsh Wisconsin winters.
Our NATE-certified specialists are available 24/7 for emergencies, capable of servicing and repairing all makes and models. Contact us for all your heating or furnace repair needs in West Bend.

Air Conditioner Repair and Installations
If you need a new air conditioning system for your home or business, we have the perfect solution to keep you cool and fit your budget. Our experienced team will ensure a flawless air conditioning installation and the 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 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.
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 will stay comfortable during hot Southeastern Wisconsin summers while saving on energy bills.
Our technicians also offer air conditioning repair services and can work with you to replace damaged parts in your old system. Give us a call for all your air conditioning needs in West Bend.
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 repair 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

West Bend, WI Plumbing Services You Can Rely On
When plumbing issues disrupt your day, Thielmann Heating, Cooling, and Plumbing provides dependable plumbing services in West Bend, WI. Our licensed plumbers handle everything from small repairs to full system replacements with precision and care. You get honest recommendations, upfront pricing, and quality results every time.
We repair leaky pipes, clogged drains, and fixtures that don’t want to work as they should, working to quickly prevent any further damage. If your water heater fails, our team can repair or replace it with an energy-efficient model that fits your home’s needs. We also install sump pumps and water treatment systems to keep your water clean and your basement dry.
Homeowners across West Bend trust Thielmann for reliable plumbing services that keep their homes running smoothly. We combine decades of experience with modern tools to ensure every job meets local codes and high standards of craftsmanship. Whether you need maintenance, emergency service, or a full upgrade, we’re ready to help.
Common plumbing services in West Bend include:
- Water heater repairs and replacements (tank and tankless)
- Sump pump repair and installation
- Drain cleaning and clog removal
- Pipe repair and replacement
- Garbage disposal repair and installation
- Fixture upgrades for kitchens and bathrooms
- Water treatment and filtration systems
If your home in West Bend needs plumbing service, don’t wait until a small leak becomes a major problem. Call Thielmann Heating, Cooling, and Plumbing for fast, dependable help. Our technicians are available for routine maintenance and 24/7 emergency service to restore comfort and peace of mind.
Why Choose The Thielmann Group
Since 1929, our team has been the go-to choice for top-quality residential and commercial HVAC services in West Bend 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
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 West Bend, WI
Job Locations and Reviews
Performed routine maintenance on residential furnace system. Inspected and tested all internal components including Honeywell control valve, wiring connections, and motor assembly. Completed scheduled preventative maintenance as part of prepaid service agreement.
Conducted warranty inspection of HVAC system in basement utility room. Documented existing installation configuration including ductwork placement, piping connections, and structural clearances. No immediate service issues identified during visual assessment.
Performed inspection and maintenance on residential boiler system. Found and serviced pressure regulator valve on copper supply piping. Verified proper operation of shutoff valves and inspected mounting hardware securing piping to ceiling joists.
Performed comprehensive tune-up on customer's furnace system, including thorough inspection of internal components. Accessed and evaluated motor assembly, electrical connections, and heat exchanger for proper functionality. Unit was tested with diagnostic equipment to verify optimal performance and ensure safe operation for the upcoming heating season.
Successfully installed a mini-split air conditioning unit in a wood-paneled room. The indoor air handler was properly mounted on the wall above the bed, ensuring optimal airflow distribution throughout the space. System was tested and confirmed to be operating correctly.
Performed inspection of residential furnace system revealing corrosion on copper piping and potential electrical issues at junction box. Examined blower motor assembly and control module, noting proper operation of fan components. Cleaned corroded connections and verified all wiring was secure with normal system operation restored.
Performed routine service on Buderus boiler system. Inspected Amtrol Extrol expansion tank and associated copper piping network for proper function. Verified all valves and connections were secure with no leaks present throughout the heating system.
Responded to no-heat call for aging residential furnace. Diagnosed failed ignition control module causing system failure. Replaced ignition control module, cleaned flame sensor, and verified proper system operation with multiple heating cycles. Unit now functioning correctly with normal flame pattern and appropriate temperature rise.
Performed inspection of basement furnace installation, noting proper mounting of the heating unit on concrete wall with functional digital display. Verified integrity of extensive copper piping network, checked circulation pump operation, and confirmed proper installation of PVC venting through ceiling joists. All components operating within normal parameters.
Conducted water quality testing procedure to evaluate client's water supply, comparing clear sample against amber/brown sample to determine contaminant levels and appropriate water treatment system requirements. Test results will inform recommendations for filtration or purification solutions to address identified water quality issues.
Performed scheduled maintenance on Lennox furnace system. Inspected all components including PVC venting, electrical connections, and associated ductwork. Unit appears to be in good working condition with no visible issues or required repairs.
Performed comprehensive furnace tune-up including inspection of internal components, electrical connections, and control boards. Removed front panel to access and test safety systems and electronic controls. Examined ventilation system including PVC exhaust pipes and verified proper installation of ductwork connections. All systems operating within normal parameters after service.
Conducted comprehensive inspection of existing plumbing configuration featuring copper supply lines with visible aging and potential minor corrosion at joints. System includes braided stainless steel flexible connectors to valve fixtures and PVC integration. Documented current condition of ceiling-mounted assembly for future reference and maintenance planning.
Performed routine maintenance on boiler system including replacement of Sid Harvey oil filter to ensure optimal fuel delivery. Visual inspection showed proper installation with no leaks at connection points. System returned to normal operation with improved efficiency.
Completed installation of a new tanked water heater in unfinished basement area. System includes proper connections to existing copper and black pipe infrastructure, with a blue expansion tank mounted on adjacent wall. All required valves and safety features installed according to code.
Diagnosed and serviced gas valve control module on HVAC system that was not producing heat. Inspected wiring connections to control board (HI, C, M, D terminals) and verified proper operation of gas valve switch positions. System is now functioning correctly with proper heat output.
Performed drainage system repair involving replacement of damaged PVC piping and fittings in utility area. Additionally, serviced HVAC unit with thorough cleaning and inspection of blower wheel assembly, restoring proper airflow and system efficiency.
Performed comprehensive tune-up service on residential HVAC system located in basement utility area. Conducted thorough inspection of furnace internal components including control board, wiring connections, and PVC ventilation/drainage lines. Checked secondary air handler/humidifier unit and verified proper operation of all valves and connections in the system.
Performed routine maintenance tune-up on HVAC system. Inspected interior metal compartment for wear and debris. Conducted electrical testing using Fieldpiece SC680 clamp meter, confirming amperage reading of 1.05A with voltage verification at 0.0V, indicating proper electrical parameters within manufacturer specifications.
Diagnosed and repaired an older furnace experiencing no-heat condition. Inspection revealed a failing blower motor with visible wear on the mounting bracket and deteriorated wiring connections. Replaced the blower motor assembly and reconnected all electrical components, then verified proper system operation through complete heating cycle test.