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
West Bend, WI at a glance
Thielmann Heating, Cooling & Plumbing has completed 20 jobs in West Bend, WI between June 2026 and September 2026.
The most recent job was on September 24, 2026.
Job Locations and Reviews
Completed furnace and air conditioning tune-ups on dual HVAC system. Inspected Space-Gard air filtration unit, furnace blower assembly, electrical connections, and venting components. Noted significant contamination on evaporator coil fins with dark staining in lower sections and visible cracks in drain pan indicating age-related deterioration that may require future attention.
Completed comprehensive A/C tune-up on residential split system with Lennox furnace and outdoor condenser unit. Performed standard maintenance procedures including inspection of both indoor and outdoor components, verified proper operation of fan assembly, checked electrical connections, and ensured system is operating within manufacturer specifications.
Completed furnace tune-up on natural gas heating system. Performed combustion analysis revealing optimal efficiency at 93.9% with safe CO levels at 6 ppm in flue and 11 ppm ambient, stack temperature reading 100°F, and proper oxygen levels at 9.2%. Noted moderate debris accumulation in unit base requiring cleaning during maintenance visit.
Responded to service call for temperature and pressure relief valve actively discharging water on tanked water heater system. Upon arrival, inspected water heater installation in basement utility area and confirmed T&P valve was continuously releasing water, indicating either excessive system pressure, elevated water temperature, or valve failure. Evaluated overall condition of copper supply piping, connections, and mounting configuration. Diagnosed cause of discharge issue and assessed water heater operation including temperature settings and pressure conditions. Replaced faulty T&P relief valve with new code-compliant unit, ensuring proper installation torque and orientation for safe discharge routing. Tested system operation under normal conditions to verify proper valve seating and confirmed no further water discharge occurring. System restored to safe operating condition with proper pressure relief protection in place.
Responded to service call for Honeywell Home ProSeries programmable thermostat displaying low battery warning immediately after battery replacement. Upon arrival, verified thermostat was operational and displaying correct temperature readings with heating system functioning normally. Inspected battery compartment, confirmed fresh batteries were properly installed, and checked for any corrosion or connection issues—none found. Thermostat display showed system actively calling for heat with proper communication to HVAC equipment, indicating the low battery message may have been a residual alert that cleared after power cycling.
Completed preventative maintenance tune-up on Mitsubishi ductless mini-split system with single indoor head unit. Performed standard inspection of indoor evaporator coils, cleaned filters, and verified proper operation of both the wall-mounted air handler and outdoor condenser unit. System found to be in good working condition with all components operating within normal parameters.
Conducted on-site assessment for water heater replacement in residential property. Evaluated existing water heater installation located in basement utility area, noting unit is aged but currently operational. Documented existing plumbing configuration including copper supply lines, shut-off valves, and connection points mounted to concrete block wall. Photographed HVAC ductwork proximity and existing piping arrangement to determine clearances and access requirements for replacement unit installation. Assessed bathroom fixtures and plumbing system to ensure compatibility with proposed water heater specifications. Prepared comprehensive replacement estimate based on existing conditions and access considerations.
Performed comprehensive tune-up and maintenance on mid-efficiency chimney-vented boiler system. Disassembled, cleaned, and inspected burner assembly tubes and components, removing carbon deposits and verifying proper combustion chamber condition. Reassembled system, tested all safety controls, verified proper venting operation, and confirmed efficient heating system performance upon completion.
Conducted comprehensive assessment of existing sewer stack system in basement area. Inspected severely corroded cast iron drain pipes showing extensive rust deterioration throughout multiple joints, elbows, and connection points. The existing piping configuration exhibited significant age-related degradation with reddish-brown corrosion compromising structural integrity of the drainage system. Documented current plumbing infrastructure including horizontal and vertical pipe runs mounted between floor joists, noting multiple right-angle connections and elbow fittings in deteriorated condition. Evaluated replacement scope requiring removal of compromised cast iron stack and installation of new PVC drainage piping system to restore proper waste water flow and prevent potential leaks or failures.
Conducted on-site evaluation of non-operational natural gas furnace located in basement. Home contains two separate furnace systems; inspected failed unit that has been inoperative for approximately one year. Assessed existing installation including ductwork connections, venting system with PVC piping, and current equipment configuration. Provided comprehensive replacement estimate for new natural gas furnace system to restore heating functionality to affected zone of residence.
Provided estimate for converting existing dual HVAC system configuration to a single unified system with multilevel zoning controls and installation of whole home humidification equipment. Both existing furnaces are currently located in basement area. Documented existing outdoor condensing unit and interior equipment with serial number documentation for replacement specifications.
Responded to service call for non-operational residential water heater at small congregation facility with minimal hot water usage. Inspected basement mechanical room containing Smith tanked water heater and associated water treatment system including iron filtration equipment (iron curtain). Performed visual assessment of water heater operation, verified proper function of heating elements and thermostat controls. Evaluated water treatment system consisting of multiple cylindrical treatment tanks with digital control heads and blue ball valve shutoff system on copper supply lines. Confirmed pressure gauge readings within normal parameters. Assessed iron filtration system operation to ensure proper water conditioning for water heater longevity. System found operational with no immediate repairs required at time of inspection.
Completed full tune-up maintenance on residential gas furnace system with scheduled arrival window. Performed comprehensive inspection of blower motor, internal mechanical components, and electrical connections. Verified proper operation of drainage and venting system, checked all ductwork connections and securing straps, and confirmed system functionality upon completion.
Completed full tune-up on Lennox furnace system, including comprehensive inspection of blower motor assembly, control board, and all electrical connections. Performed humidifier tune-up service, verified proper operation of all system components, and confirmed equipment is functioning within manufacturer specifications.
Completed installation of new anode rod on Bradford White residential water heater system. Customer was contacted prior to arrival as requested, and all work was performed according to manufacturer specifications with proper plumbing connections maintained throughout the installation.
Completed comprehensive tune-up service on oil furnace system located in basement utility area and mini-split air handler unit installed in attic crawl space. Performed standard maintenance procedures including inspection of all electrical connections, ductwork, and system components to ensure proper operation and efficiency for both heating and cooling systems.
Completed full air conditioning system and evaporator coil installation with ductwork integration. Installed new AC unit with matching indoor coil, ran and terminated electrical wiring, connected refrigerant lines, and secured all ductwork connections to existing system. All components tested and operational upon completion, with customer paying via cash/check/credit card.
Responded to no cooling call on aging air conditioning system. Upon inspection, found failed dual run capacitor with visible corrosion and rust staining on mounting surface, preventing compressor and condenser fan motor operation. Replaced defective capacitor, verified proper electrical connections, and tested system operation with successful cooling restored.
Completed full furnace installation in mechanical room with required permits and electrical coordination. Installed new furnace unit with proper ductwork connections, including galvanized steel supply and return plenums with elbow transitions. Ran all electrical wiring through metallic conduit to unit, completed internal wiring connections, and ensured proper integration with existing HVAC ductwork system. Installed PVC condensate drain piping and venting per manufacturer specifications. All components tested and operational upon completion.
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.