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
# HVAC Estimate - Mini Split Conducted comprehensive site assessment for mini-split heat pump system installation in residential property. Evaluated two primary zones including dining/living area and master bedroom for optimal indoor unit placement and capacity requirements. Assessed existing electrical infrastructure, determined exterior wall penetration locations for refrigerant line sets, and identified suitable outdoor condenser placement. Provided detailed equipment specifications and installation scope for multi-zone ductless HVAC solution to replace existing baseboard heating system.
Completed HVAC estimate for system replacement in residential basement utility area. Assessed existing Rheem water heater installation with associated copper piping, electrical connections via junction box and flexible metallic conduit, and dual black vent pipes extending to ceiling. Evaluated secondary white HVAC unit with multiple copper pipe connections showing age-related oxidation, blue valve control point, flexible metallic ventilation duct, and associated wiring systems mounted on concrete block walls. Documented current equipment configuration, plumbing connections, electrical service, and venting arrangements to provide comprehensive replacement specifications and equipment sizing recommendations for complete system upgrade.
# Furnace Inspection and System Assessment Performed comprehensive inspection of residential gas furnace system. Removed front access panel to evaluate internal components and operational status. Inspected burner assembly and confirmed proper flame characteristics with visible blue flame pattern indicating complete combustion. Examined gas valve assembly and verified all electrical connections including red, white, green, and black wire terminations were secure and properly seated. Assessed blower motor assembly housing and internal cabinet components for proper operation and mechanical integrity. Inspected control boards and electronic components throughout the unit, including circuit boards with associated wiring harnesses. Verified all safety labels and specification tags remained legible and properly affixed to respective components. Evaluated thermostat and humidifier control wiring marked on interior panel. Noted normal dust accumulation consistent with equipment in regular se
Completed comprehensive HVAC system evaluation for equipment replacement estimate at residential property. Assessment included existing Rheem furnace installation in basement utility area with connected air handler and filter housing, plus exterior air conditioning unit positioned in side yard corner showing signs of weathering and requiring attention to surrounding clearance area. Documented current system configuration, equipment specifications, and installation conditions to provide accurate replacement recommendations for complete heating and cooling system upgrade.
# HVAC Estimate - Replacement Summary Conducted comprehensive assessment of existing HVAC system and water heater in basement utility room for replacement estimate. Evaluated current gray cylindrical water heater unit with copper piping connections, noting moisture staining on concrete floor and signs of age. Inspected existing air handler unit with metal ductwork and black flexible ducting, along with reflective insulated ductwork running along ceiling joists. Documented equipment specifications, spatial constraints, existing infrastructure connections, and utility room configuration to provide accurate replacement recommendations for both water heating and HVAC systems.
Conducted assessment of bathroom shower/tub enclosure featuring ceramic tile walls and brass fixtures. Evaluated existing shower head, faucet handle, and water spout for potential replacement. Documented condition of plumbing connections between wall and fixtures for future reference.
Successfully installed new furnace with proper pressure testing completed. Conducted differential pressure measurements using Klein Tools ET180 manometer, confirming readings of 16.6 InH₂O and 14.4 InH₂O, which fall within manufacturer specifications. System is now operational with all connections properly sealed and tested.
Inspected existing water treatment system setup and provided estimate for installation of a new water softener unit. Evaluated current plumbing configuration including drain access and connection points to yellow insulated and blue water lines. Recommended appropriate water softener system based on household needs and existing utility room layout.
Installed new copper water supply lines with shut-off valves in renovation area. Used flexible stainless steel connectors to prepare for fixture installation. All connections secured and tested for proper function.
Inspected water heater system and documented significant copper heating element deterioration. Element exhibited advanced corrosion with extensive reddish-brown oxidation throughout, particularly severe at the U-bend section. Photographic documentation was taken to show condition of component requiring replacement due to compromised integrity.
Performed assessment of aging Carrier natural gas HVAC system showing significant wear and dirt accumulation. Documented drain area and surrounding floor condition with visible cleaning tools in place. Recommended complete system replacement based on equipment age, visible deterioration, and operational specifications noted on manufacturer information plate.
Conducted inspection of an aging water heater installation with significant copper pipe oxidation and mineral buildup at connection points. Documented existing plumbing configuration including copper/PVC pipe integration, valve assembly with prominent red handle, and pressure regulator system. Noted several areas requiring attention including corrosion at pipe junctions, deteriorating insulation, and potential flow restriction due to mineral deposits.
Responded to no-heat call for Bryant Plus 90 furnace (10+ years old). Removed front panel to access internal components, inspected control board, wiring, motor, and gas connections. Diagnosed failed ignition module, replaced component and verified proper system operation with multiple heating cycles.
Conducted inspection of existing water heater system in basement utility area. Documented current installation which includes water heater tank with top connections, adjacent water treatment/filtration system, and associated plumbing infrastructure including copper pipes, PVC lines, and metal ducting. System evaluation completed for potential replacement of aging unit with more efficient model.
Conducted assessment of existing AC condenser unit installed on brick base platform. Documented debris accumulation around unit and on fan grill. Measured brick paver displacement to evaluate foundation stability for new unit installation.
Performed routine maintenance on Lennox furnace system located in utility room. Inspected PVC venting pipes, drain lines, and connection to ductwork, confirming proper installation and function. Visual examination revealed system to be in good working condition with no immediate concerns.
Replaced corroded evaporator coil access panel and cleaned oxidized refrigerant connections. Inspected system for proper operation after panel replacement and verified secure mounting of all components.
Performed comprehensive combustion analysis on heating system using Bacharach Fyrite INTECH analyzer. Diagnostic readings showed oxygen level at 5.5%, carbon monoxide at 73 ppm, and stack temperature at 114.5°F. Adjusted burner assembly to optimize combustion efficiency and ensure safe operation parameters.
Performed comprehensive tune-up on aging HVAC system, documenting extensive corrosion on condensate drain lines and significant rust formation on the evaporator coil housing. Inspected PVC drain piping connections and identified deteriorating insulation on refrigerant lines that requires attention during next scheduled maintenance.
Performed comprehensive inspection and documentation of existing HVAC system in residential basement. System includes furnace unit with sheet metal housing connected to vertical PVC ventilation pipes, side-mounted humidifier, and rectangular metal ductwork running along ceiling joists. Photos captured both the main mechanical room setup and adjacent storage area with exposed infrastructure for complete system evaluation prior to replacement estimate.