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 September 2026 and October 2026.
The most recent job was on October 13, 2026.
Thielmann Heating, Cooling & Plumbing has completed 212 jobs in West Bend, WI in the last 12 months.
Job Locations and Reviews
Performed an on-site replacement estimate to convert an existing oil-fired furnace to an alternative fuel system, evaluating electric heat pump and air handler options as well as propane (LP) alternatives, since natural gas is unavailable and the home is otherwise all-electric. Inspected the existing galvanized supply ductwork in the basement, which appeared intact and in good condition with no visible damage, rust, or leaks, and reviewed the aging air conditioning system for possible concurrent replacement. Presented system options and professional recommendations to support a conversion before the heating season.
Responded to service call for leaking 40-gallon natural gas Bradford White water heater. Upon arrival, confirmed severe tank leak requiring full unit replacement. Removed existing failed water heater and installed new 40-gallon natural gas tall model with proper venting, gas line connections, and plumbing tie-ins. Connected copper supply lines, installed safety relief valve, and mounted expansion tank. Verified all connections for proper operation and tested unit for leaks before restoring service.
Provided estimate for water heater with pilot light failure due to defective thermocouple. Unit dating from 1983 showing significant age and wear, with recommendation for thermocouple replacement to restore proper pilot light operation.
Responded to service call for water heater leaking from pipe connections. Upon arrival, inspected tanked water heater and identified active leak at copper pipe compression fittings with blue plastic ferrules. Evidence of significant water damage was visible on floor surrounding unit, with extensive staining and discoloration indicating ongoing moisture issues. Assessed plumbing connections at top of water heater, noting corrosion on copper pipes and mineral deposits around connection points. Tightened compression fittings and verified proper seal at both inlet and outlet connections. Cleaned area and monitored for additional leakage to confirm repair effectiveness.
Completed standard furnace tune-up and safety inspection on residential gas heating system. Performed visual inspection of furnace cabinet, blower assembly, and ductwork connections, verified all components operational and access panel secure, and documented system condition with photos for service records.
Conducted on-site assessment for oil-to-gas furnace conversion at residential property currently without existing gas service. Evaluated exterior equipment location, existing HVAC infrastructure, basement mechanical room configuration, and available space for new gas heating system installation. Documented current conditions and provided comprehensive estimate for complete heating system replacement including gas line installation requirements.
Completed comprehensive heating tune-up and safety inspection on 15-year-old residential furnace unit. Performed standard maintenance protocol including visual inspection of blower motor assembly, electrical connections, control boards, and heat exchanger; verified proper operation of PVC vent and intake piping system; checked all wire terminations and safety controls. All components found operating within normal parameters; unit photographed and returned to service.
Completed warranty installation of gas valve on HVAC system. Performed electrical diagnostics using voltage detector to verify proper system operation and safety. Ensured all pipe fittings and connections were properly aligned and secured using precision leveling tools. Tested gas valve functionality and confirmed system integrity upon completion.
Completed comprehensive furnace tune-up and system inspection. Verified proper operation of all heating components, inspected PVC venting system and ductwork connections for secure installation and proper drainage, and confirmed system is operating safely and efficiently for the heating season.
Conducted on-site evaluation of existing water softener system in residential basement mechanical room for replacement estimate. Assessed current water treatment equipment configuration, including softener unit with cylindrical tank design, associated plumbing connections with copper piping, compression fittings, and shutoff valves. Documented equipment specifications and installation layout to provide accurate replacement proposal.
Completed preventive maintenance tune-up on HVAC system. Inspected ductwork and drainage components in mechanical space, confirmed proper installation and condition of PVC condensate lines and metal ductwork with all seams and joints secure. Verified system operating temperatures using infrared thermometer, recording 116.6°F discharge temperature indicating normal heat operation.
Conducted on-site evaluation for mini split system installation at residential property. Assessed outdoor patio area with covered entryway for optimal placement of condenser unit and indoor air handler, documenting existing electrical conduit routing and structural considerations for future equipment mounting and refrigerant line installation.
Responded to no heat call for boiler system. Upon arrival, conducted thorough inspection of mechanical equipment and documented existing conditions. Found significant corrosion and rust deterioration on vertical supply piping, with heavy oxidation visible at pipe connections and fittings. Observed water heater expansion tank installed with date marking indicating previous service work. Collected equipment information and photographed corroded components showing advanced deterioration from moisture exposure over time. System evaluation completed and findings documented for further assessment and repair recommendations.
Completed furnace tune-up and replaced malfunctioning Pro 4000 thermostat. Verified system operation, measured supply air temperature at 174.86°F, and confirmed proper heating cycle. Inspected ductwork and mechanical components to ensure all systems functioning correctly.
Completed comprehensive tune-up service on residential split system, including both air conditioning and furnace components. Performed thorough inspection of furnace heat exchanger assembly, blower motor operation, and all electrical connections within the air handler cabinet. Verified proper operation of control board, safety switches, and all wiring harnesses, ensuring all connections were secure and system components functioning within manufacturer specifications.
Completed furnace tune-up and inspection on residential HVAC system. Accessed air handler unit, verified all mechanical and electrical components operating within normal parameters, inspected blower motor assembly, checked wiring connections, and examined venting system including PVC intake and exhaust pipes. All safety labels present and system functioning properly upon completion.
Completed full HVAC system installation including two high-efficiency furnaces, two air conditioning units, and one whole-home humidifier in accordance with permit requirements and coordinated with licensed electrician for electrical connections. All equipment properly mounted, vented with PVC piping, refrigerant lines connected and charged, condensate drainage systems installed, and units tested for proper operation and airflow.
Completed scheduled prepaid maintenance and tune-up on residential furnace system. Performed comprehensive diagnostic testing of electrical components and verified proper system operation using multimeter, inspected blower motor assembly, circuit boards, and wiring connections, and confirmed all mechanical components functioning within manufacturer specifications.
Performed comprehensive tune-up on Lennox air conditioning system and furnace. Conducted diagnostic testing of outdoor unit using digital refrigerant gauges, measuring system pressures and temperatures to verify proper refrigerant charge and system performance. All components operating within manufacturer specifications at time of inspection.
Responded to service call for leaking bathroom sink with faulty shut-off valves. Upon inspection, diagnosed deteriorated angle stop valves showing corrosion and active leaking beneath the sink cabinet. Replaced both hot and cold water supply shut-off valves with new brass angle stops, installed new braided flexible supply lines, and verified all connections were secure and leak-free. Tested system operation and confirmed proper water flow with no further leakage detected.