For over 90 years, Thielmann Heating, Cooling, and Plumbing has been the go-to provider for dependable home solutions in the Southeastern Wisconsin area. Our team combines expertise and personalized care to ensure your living or working spaces are efficient, secure, and comfortable. Whether it’s installing West Allis HVAC systems or addressing plumbing challenges, we’re committed to delivering seamless, high-quality service every time. For superior home services, call (262) 299-6197 or contact our team online.
Advanced HVAC Solutions for West Allis Homes

The diverse weather patterns of West Allis make having a dependable HVAC system an absolute necessity to ensure year-round comfort. At Thielmann Heating, Cooling, and Plumbing, we deliver innovative heating and cooling solutions tailored to meet the unique demands of your home or business:
West Allis Heating Services
- Furnace Installations and Repairs: Upgrade to high-efficiency furnaces or maintain your current system with expert repairs. We ensure your home stays warm and energy-efficient during the coldest months.
- Heat Pump Systems: Achieve energy-efficient heating and cooling in one versatile system. Heat pumps are perfect for maintaining consistent indoor temperatures all year long.
- Boiler Maintenance: Keep your boiler running smoothly with our comprehensive maintenance and repair services. Enjoy even and reliable heat distribution throughout your home.
- Emergency Heating Repairs: When your system breaks down unexpectedly, count on us for fast and effective repairs.
Cooling Services in West Allis
- Central Air Conditioning: Modern AC systems provide consistent, efficient cooling tailored to your home’s specific needs. We handle installations, replacements, and repairs.
- Ductless Mini-Splits: Perfect for homes without ductwork, mini-splits offer targeted cooling solutions with exceptional energy efficiency.
- Zoned Cooling Systems: Customize temperatures in different areas of your home for personalized comfort. This solution allows you to save energy by only cooling occupied spaces.
- AC Maintenance Plans: Extend your system’s lifespan and prevent costly breakdowns with regular tune-ups and inspections.
Plumbing Services Designed for Reliability

Your home deserves a plumbing system that works effortlessly, day in and day out. That’s why Thielmann is here to provide dependable, high-quality plumbing services in West Allis tailored to your needs:
- Reliable Water Heater Services: Whether you prefer tank or tankless systems, our team ensures your water heater delivers hot water whenever you need it. We also offer energy-efficient upgrades that help you save money in the long run.
- Stylish Fixture Replacements: Revitalize your kitchen or bathroom with sleek, modern faucets, sinks, and showerheads. Not only do they look great, but they’re also built to improve water efficiency.
- Dependable Sump Pump Solutions: Avoid the stress of basement flooding with our expertly installed sump pumps. We also provide routine maintenance to keep your system ready for heavy rains.
- Efficient Garbage Disposal Services: A fully functional garbage disposal makes life easier. Count on us for repairs or installations that keep your kitchen running smoothly.
- Water Softener Installations: Hard water doesn’t have to be a headache. Our water softener solutions improve water quality, reduce scale buildup, and extend the lifespan of your appliances.
Indoor Air Quality Solutions
Take control of the air you breathe with our specialized West Allis indoor air quality services, designed to create a fresher and healthier home environment for your family:
Advanced Air Purifiers
Say goodbye to allergens, dust, and pollutants with state-of-the-art purification systems that seamlessly integrate with your HVAC setup for whole-home coverage.
Enhanced Ventilation
Experience better airflow and eliminate stale, trapped air with ventilation upgrades customized to suit your home’s needs. Improved ventilation means cleaner air and a more comfortable living space.
Precision Humidity Control
Achieve the perfect balance of humidity year-round with our professional humidifiers and dehumidifiers. These systems not only improve your comfort but also help protect your home from the effects of excessive moisture or dryness.
UV Technology for Cleaner Air
Protect your family from harmful bacteria, mold, and viruses with ultraviolet light systems integrated into your HVAC unit. These cutting-edge solutions ensure a safer, healthier indoor environment.
Commercial Services for West Allis Businesses
Thielmann is proud to partner with West Allis businesses, providing tailored solutions to ensure smooth operations and energy efficiency. Our commercial services include:
- High-Performance HVAC Systems: Keep your business comfortable with energy-efficient heating and cooling systems designed specifically for commercial spaces. We handle everything from installation to ongoing maintenance.
- Comprehensive Plumbing Solutions: From routine restroom repairs to complex piping projects, our commercial plumbing services are reliable and efficient, helping you avoid costly disruptions.
Contact Thielmann Today
Upgrade your home or business with expert services from Thielmann Heating, Cooling, and Plumbing. Contact us today to schedule a consultation or service appointment by calling (262) 299-6197. We’re proud to serve West Allis with solutions that enhance comfort, efficiency, and safety.
Recent Jobs and Reviews in West Allis, WI
Job Locations and Reviews
Performed comprehensive HVAC tune-up service including temperature differential testing across the system. Supply air temperature measured at 45.8°F and return air temperature recorded at 95.6°F, confirming proper cooling performance with a 49.8°F temperature differential, which is within optimal operational parameters.
Completed thermostat replacement on Daikin HVAC system, installing new unit and connecting all control wiring (R, W, G, Y, B) according to manufacturer specifications. Verified proper system operation through heating and cooling cycle tests, ensuring communication between thermostat and furnace unit.
Diagnosed electrical issue on aging heating system using Fieldpiece SC680 multimeter. Performed amperage and voltage testing on system components, measuring 0.89A current draw. System restored to proper operation after electrical troubleshooting and necessary repairs.
Performed routine HVAC tune-up service including inspection and evaluation of the Space-Gard air cleaner system. Examined the existing air filter which showed significant dust accumulation and possible mold growth in surrounding area. Replaced the dirty pleated filter with a new one to ensure proper system airflow and improved indoor air quality.
Performed comprehensive HVAC tune-up including electrical system diagnostics using multimeter (SC680) to verify proper current readings of 2.3 μA DC. Inspected Aire-Flo furnace unit and associated ductwork for proper installation and operation, confirming all components are functioning within manufacturer specifications with no visible issues detected.
Performed comprehensive tune-up service on wall-mounted HVAC unit. Cleaned and inspected interior components, checked refrigerant levels, and verified proper operation of both heating and cooling functions. Unit is functioning efficiently with no issues detected.
Performed comprehensive tune-up on hydronic heating system, inspecting circulation pump and associated controls. Examined copper supply/return lines for integrity and proper connection, and verified proper operation of valve assembly. System now functioning within normal parameters with no leaks detected.
Performed diagnostic inspection on gas furnace, discovering internal component issues as evidenced by visible wear on motor assembly and electrical connections. Inspected exterior gas meter and supply lines for proper function and safety compliance. Resolved issue by cleaning debris from system components and verifying proper gas supply pressure at meter.
Performed routine preventative maintenance on HVAC system including inspection of control board and electrical components. Tested amperage draw with clamp meter, recording 3.7 amps which is within manufacturer specifications. Inspected and verified proper condition of Type A air filter; some dust accumulation noted on system components but not affecting performance.
Performed annual maintenance on furnace including heat exchanger inspection and flame sensor cleaning. Unit operating within normal parameters after service. Documented baseline operation for future reference with photographic evidence of equipment condition and internal components.
Performed comprehensive HVAC system tune-up including inspection and replacement of 16x25x1 air filter. Conducted electrical diagnostic testing with SC680 multimeter, measuring voltage readings of 5700 across system components and verifying proper electrical connections to ensure optimal equipment operation and efficiency.
Performed routine tune-up service on Lennox HVAC system, including inspection of ductwork, component testing, and replacement of dirty air filter with new one. System is functioning properly with all connections secure and no issues identified with the ventilation system or Honeywell control component.
Conducted assessment of existing HVAC system in unfinished basement with exposed PVC piping, ductwork, and structural elements. Identified aging furnace unit requiring replacement. Documented current installation configuration including metal ductwork runs, connections, and surrounding mechanical components to prepare comprehensive replacement estimate.
Performed inspection of furnace system located in basement utility area. Accessed interior components of the blower assembly to examine motor, electrical connections, and ventilation system. Visual inspection revealed normal operational condition of the furnace with no apparent mechanical or electrical issues identified.
Completed installation of a new furnace system with digital programmable thermostat mounted on interior wall. Installed proper PVC venting through exterior siding with P-trap configuration for condensate drainage. All components tested and functioning correctly with temperature control set to 70°F.
Performed regular preventative maintenance agreement service. Conducted temperature diagnostics with digital thermometer showing 62.9°F readout and electrical system evaluation using Fieldpiece SC680 multimeter which indicated proper microamp readings of 4.0 μA. All systems operating within manufacturer specifications.
Performed scheduled tune-up on Bryant HVAC system. Removed front panel to access internal components for comprehensive inspection and testing. Utilized Testo 310 analyzer to evaluate combustion efficiency, with readings showing optimal performance (O2: 9%, CO2: 6.28%, efficiency: 93.4%). All internal components including blower motor, circuit board, and electrical connections were inspected and found to be in proper working condition.
Completed comprehensive inspection of aging HVAC system located in utility closet. Assessed furnace unit with visible wear on internal components (copper tubing and wiring) and evaluated adjacent air handler with efficiency concerns. Recommended full system replacement to improve energy efficiency and reliability, with new equipment properly sized for the residence.
Performed inspection of mechanical equipment showing significant corrosion and wear. Identified rust formation at metal bracket connection points and deterioration around valve assembly with copper fitting. Documented condition of threaded pipe connections and wire routing for further assessment and repair planning.
Conducted comprehensive inspection of aging HVAC system showing signs of normal wear in basement/utility area. Documented exterior conditions including weathered wall surfaces with moisture damage and evaluated existing connections to ductwork, drainage lines, and utility access points. Recommended complete system replacement due to age and efficiency concerns.