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 call where both air conditioning and furnace were not operating despite recently installed thermostat and replaced breakers. Upon arrival, found Honeywell Home programmable thermostat displaying "Waiting For Equipment" message with setpoint at 98°F while actual temperature read 76°F. Diagnosed and resolved communication issue between thermostat and HVAC equipment, verified proper wiring connections at thermostat and equipment, and restored system to normal operation with both heating and cooling capabilities functional.
# HVAC Installation Summary Completed full air conditioning system installation including outdoor condensing unit and indoor evaporator coil. Installation performed in accordance with permit requirements and coordinated with licensed electrician for proper electrical connections. # Work Performed Installed new outdoor condensing unit on prepared concrete paver pad against exterior wall. Unit positioned for optimal airflow and serviceability with proper clearances maintained. Secured electrical conduit and wiring to concrete block wall using appropriate mounting brackets. Connected electrical power supply in coordination with licensed electrician to ensure code-compliant installation. Inside mechanical room, installed new air handler with evaporator coil assembly. Mounted unit vertically on interior wall with proper support and leveling. Installed refrigerant line set connecting outdoor condensing unit to indoor coil, routing copper lines through wall penetration. Brazed all refrige
Arrived on-site and performed diagnostic evaluation of furnace unit to confirm control board failure. Presented estimate for control board replacement, obtained customer approval, and proceeded with repair. Replaced defective control board with new OEM component, verified all electrical connections, and tested system operation to ensure proper heating function. Unit restored to full operational status.
Completed annual air conditioning tune-up and preventative maintenance service on residential split-system HVAC equipment. Performed comprehensive inspection of outdoor condenser unit and indoor Lennox furnace system, verified proper operation of all components, checked refrigerant levels, cleaned condenser coils, inspected electrical connections and disconnect box, and confirmed adequate airflow through both indoor and outdoor units.
Responded to no cooling call and found electrical disconnect box heavily packed with dried leaves and organic debris creating fire hazard and preventing proper system operation. Removed all debris from disconnect and capacitor compartment, cleaned electrical connections, verified capacitor functionality, and tested system for proper cooling operation. Unit restored to normal operation with all safety hazards eliminated.
Performed comprehensive furnace and air conditioning tune-up at residential property. Connected Fieldpiece SMAN refrigerant manifold and micron gauge to outdoor condensing unit to verify R410A system pressures and performance metrics, with readings indicating 211 psig suction and 223 psig discharge pressures within acceptable operating range. Completed standard maintenance procedures including refrigerant charge verification, electrical component inspection, and system operational testing to ensure optimal heating and cooling performance for the upcoming season.
Conducted comprehensive site assessment for complete HVAC system replacement in residential basement installation. Evaluated existing Armstrong furnace/air handler unit and associated ductwork infrastructure, including galvanized metal duct transitions and reflective insulation materials. Documented current system configuration, noting equipment positioning beneath floor joists, PVC condensate drainage lines, electrical conduit routing, and existing duct mounting hardware. Photographed installation area to support replacement estimate specifications, capturing equipment clearances, structural considerations, and accessibility factors for future system removal and new equipment installation.
Conducted on-site evaluation for bedroom mini-split installation options at lakefront residence. Assessed existing outdoor heat pump unit and attic infrastructure to determine feasibility of either installing a standalone single-head mini-split system or upgrading current outdoor unit to accommodate an additional indoor head for the bedroom zone. Documented existing mechanical systems, refrigerant line routing possibilities through attic space, and electrical capacity for proposed installation.
Completed comprehensive furnace and air conditioning tune-up service at residential property. Upon inspection, discovered significant frost and ice accumulation on the outdoor AC unit's evaporator coil, indicating potential refrigerant flow restriction, low charge, or airflow issues that require monitoring. Verified thermostat operation showing Honeywell ProSeries digital unit functioning properly in heat mode with temporary hold setting at 69°F. Noted debris accumulation around outdoor unit base that should be cleared to maintain proper airflow and system efficiency.
Conducted estimate for complete HVAC system replacement in residential property with original equipment struggling to maintain cooling capacity during summer months when outdoor temperatures reach mid-90s. Evaluated existing natural gas furnace and air conditioning system located in basement utility area, noting aging equipment with diminished performance and inadequate temperature control on upper levels. Assessed ductwork configuration, electrical connections, condensate drainage system, and available space for new equipment installation to provide comprehensive replacement recommendations and system sizing requirements.
Completed installation of LP (liquid propane) furnace system at residential property. Installed new furnace unit with associated condensate drainage system utilizing white PVC piping with proper trap configuration mounted on exterior wall near existing HVAC equipment. All components properly secured and drainage system routed to ensure efficient moisture removal from heating system operation.
Completed preventive maintenance tune-up on residential furnace system. Performed comprehensive system diagnostics using digital manifold gauges, measuring refrigerant pressures, superheat at 448°F, subcooling at 76°F, and temperature differentials across the evaporator coil with return air at 229.8°F and supply air at 77.9°F. All readings indicate system is operating within manufacturer specifications and no deficiencies were identified.
Completed comprehensive air conditioning tune-up and preventive maintenance on Comfortmaker condensing unit using digital manifold gauges to verify R410A refrigerant pressures, temperatures, superheat, and subcooling levels, all of which tested within manufacturer specifications. Installed customer-provided Air Bear 20x25x4 filter as part of scheduled maintenance agreement. System operational and performing efficiently upon completion of service.
Completed comprehensive tune-up and preventative maintenance on two residential air conditioning systems: one Bryant furnace with air handler located in basement mechanical room, and one Bryant outdoor condenser unit. Performed standard inspection procedures including filter check, electrical connections verification, refrigerant level assessment, condensate drain inspection, and overall system operational testing on both units to ensure optimal performance for the cooling season.
Completed annual preventive maintenance on residential furnace and air conditioning system as part of prepaid bi-annual service agreement. Performed comprehensive tune-up including inspection of gas valve assembly, electrical connections, and control board functionality. Replaced customer-supplied Air Bear filter (20x25x5). Verified proper operation of blower motor, checked refrigerant lines and PVC condensate drainage system, and confirmed all safety controls and electrical connections were secure and functioning within manufacturer specifications. System tested and left in proper working order.
Completed full HVAC system installation including furnace and air conditioning unit. Interior work included installation of furnace with metal ductwork system in basement utility area, with proper integration into existing structure and copper refrigerant line routing. Exterior work included placement of condenser unit on rubber isolation pad with gravel base against house siding, with electrical conduit run and all refrigerant lines properly connected. Licensed electrician handled all electrical connections, and all required permits were obtained for the installation.
Conducted comprehensive estimate for replacement of 15-year-old natural gas furnace and air conditioning system. The AC unit had lost 4 pounds of refrigerant, indicating a significant leak in the system. Evaluated existing equipment including basement-mounted furnace and outdoor condenser unit, documented current conditions through photographs, and provided replacement options for complete HVAC system upgrade.
Completed estimate for replacement of 18-year-old gas furnace and air conditioning system. Existing AC unit experiencing chronic refrigerant leak requiring ongoing repairs. Provided quote for Bryant high-efficiency furnace installation and new air conditioning system to replace aging equipment located in basement.
Completed installation of new Carrier furnace unit in basement mechanical room with comprehensive ductwork integration. Installed metallic ductwork system throughout ceiling area, including main trunk lines and branch connections to distribute conditioned air throughout the structure. Configured electrical connections with proper conduit routing and junction box mounting to exposed masonry wall, ensuring code-compliant power supply to heating unit. Positioned furnace on concrete floor pad and connected to existing duct network, with all ventilation grills and safety labels properly installed on unit exterior.
Conducted furnace replacement estimate for residential HVAC system located in basement utility area. Evaluated existing furnace unit with two-tone cabinet configuration, assessed current ductwork connections including galvanized metal supply and return ducts, and documented mechanical room infrastructure including ventilation piping and existing flue system. Provided comprehensive replacement options and recommendations based on current equipment condition and system layout.