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
Responded to no cooling complaint on approximately 10-year-old Lennox system. Customer reported air conditioning stopped producing cold air following blower motor replacement during winter months. Performed diagnostic evaluation of outdoor condensing unit and verified system operation. Unit appeared in normal operating condition with proper installation on concrete pad, adequate clearance from structure, and functional electrical disconnect in place.
Completed installation of Mitsubishi mini-split heat pump system at residential property. Mounted outdoor condenser unit on concrete pad against stone exterior wall, installed refrigerant line set and electrical connections through exterior wall penetration, and routed condensate drainage via white PVC piping along building exterior. Indoor air handler installation included proper refrigerant charging, system commissioning, and operational testing to verify heating and cooling performance. All work performed in accordance with manufacturer specifications and local permit requirements, with licensed electrician completing final electrical connections.
Responded to complaint of air conditioning unit continuing to run after reaching set temperature. Inspected thermostat operation and found temperature differential settings required adjustment. Verified thermostat displaying 69°F and confirmed proper communication with outdoor condensing unit. Adjusted anticipator settings to reduce runtime after temperature satisfaction. System tested and cycling properly at completion.
Completed estimate for adding air conditioning system to existing home with Carrier furnace located in basement mechanical room. Assessed current HVAC infrastructure including ductwork, electrical service, and available space for outdoor condenser unit placement. Documented existing furnace model and configuration, photographed mechanical room layout and utility connections to determine compatibility and requirements for AC integration with current heating system.
Responded to no heating and cooling call on aging HVAC system with reported previous power surge. Upon inspection, accessed furnace control board and found dual circuit boards with multiple electrical connections intact but verified system functionality after suspected electrical event. Documented equipment condition including condensate drainage system, gas connections, and control board components showing various indicator lights and terminal connections, confirming all wiring harnesses and safety controls were properly seated and operational.
Conducted on-site evaluation of existing residential water heater for replacement estimate. Assessed current unit configuration, including copper supply line connections, drain line setup, and installation space constraints within utility closet. Documented equipment condition and specifications through photographic records to provide accurate replacement recommendations.
Conducted on-site estimate for complete HVAC system replacement at residential property. Existing air conditioning unit had failed, and LP furnace located in basement exceeded 20 years of service life, warranting full system evaluation and replacement recommendations.
Conducted diagnostic inspection for conversion from electric to gas appliances, including stove, dryer, and water heater. Assessed existing basement infrastructure and kitchen layout to determine gas line routing requirements. Documented current electrical stove configuration and basement ceiling space where new gas lines will be installed, identifying optimal path through exposed joists alongside existing plumbing for future gas service connections.
Responded to no cooling call on system over 10 years old. Upon arrival, inspected attic-mounted air handler unit and found motor component with visible wear and degraded condition. Evaluated outdoor condensing unit and drainage system, which showed significant debris accumulation, clogged drain lines, and restricted airflow around equipment. Cleared drain lines of organic matter and sediment buildup that was impeding proper condensate removal. System required comprehensive assessment of aging components to restore cooling functionality.
Completed comprehensive air conditioning tune-up and system evaluation on outdoor condenser unit. Connected diagnostic gauges to assess refrigerant pressures and system performance, initiated new maintenance membership for ongoing service coverage. All components functioning properly with no issues identified during inspection.
Responded to service call for mini-split system estimate and replacement assessment. Evaluated existing residential HVAC infrastructure, including electrical panel capacity and circuit availability for new equipment installation. Documented current electrical configuration showing dedicated circuits for existing A/C attic unit and outdoor condenser, assessed compatibility for mini-split system integration, and provided comprehensive replacement estimate for customer consideration.
Responded to emergency service call and conducted on-site assessment for air conditioning system replacement. Evaluated existing HVAC equipment in mechanical room, documented current system configuration including air handler unit, electrical panel, and associated plumbing connections, and provided comprehensive replacement estimate for new AC system installation.
Responded to no heat call and found air handler evaporator coil frozen due to restricted airflow. System was shut down to allow coil to thaw completely. Inspected unit and verified refrigerant lines, drain pan assembly, and internal components. Advised customer on proper filter maintenance to prevent future freeze-ups and restored system to normal operation once coil defrosted.
Conducted on-site estimate for Mitsubishi mini-split system installation in residential living room. Customer specifically requested Mitsubishi equipment due to brand reputation and quality ratings. Assessed interior space, documented existing conditions, and provided installation recommendations for ductless heat pump system.
Evaluated existing non-functional wall-mounted air conditioning unit for replacement with mini split system. Assessed current window AC installation and discussed removal of failed unit. Provided estimate for mini split heat pump installation as replacement cooling solution and explored options for upgrading existing electric baseboard heating system to improve overall HVAC efficiency and comfort.
Completed annual cooling system tune-up on Lennox furnace unit as part of recurring membership maintenance visit. Performed comprehensive system inspection, measured supply air temperature at 43.5°F confirming proper cooling operation, and recommended filter replacement to customer. Applied membership discount on filters to address scheduling concerns from previous appointment change.
Responded to no cooling complaint on residential air conditioning system. Connected manifold gauges to condenser unit to diagnose system pressures and determine cause of cooling failure. System evaluation completed to identify necessary repairs.
Performed diagnostic inspection of both exterior hose bibs as requested. Examined interior plumbing connections in utility area, including copper supply lines, shutoff valves, and PVC drainage system to verify proper operation and check for leaks or damage. Inspected exterior-mounted dual hose bib assembly on vinyl siding, tested both spigot valves with cross-handle operation, and confirmed water flow and shutoff functionality. Both outdoor faucets found to be operating correctly with no visible leaks, corrosion, or connection issues at time of inspection.
Relocated existing sump pump and crock assembly to new section of basement as requested. Installed new PVC discharge line with appropriate fittings and check valve to ensure proper drainage and prevent backflow. Verified system operation and confirmed adequate pump functionality in new location.
Conducted an on-site assessment for whole home dehumidifier installation in residential basement utility area housing existing HVAC equipment. Evaluated current furnace setup, ductwork configuration, available space, and electrical requirements to provide comprehensive estimate for IAQ system integration with existing infrastructure.