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
Completed comprehensive tune-up service on two air conditioning systems, including one Goodman furnace unit with integrated cooling components located in basement utility area and one outdoor condenser unit. Performed standard maintenance procedures on both systems including inspection of electrical connections, refrigerant lines, and mechanical components to ensure optimal performance and efficiency for the cooling season.
Completed comprehensive HVAC tune-up service on residential furnace and air handler system located in basement mechanical room. Performed standard maintenance protocol including filter inspection, visual equipment assessment, and system operational verification to ensure proper heating and cooling functionality for the upcoming season.
Responded to service call for lower duplex air conditioning unit experiencing short cycling issues. Upon arrival, performed diagnostic assessment of dual condensing unit installation located on exterior concrete pad. Evaluated system operation and identified intermittent on/off cycling concern reported by occupant. Conducted thorough inspection of outdoor condensing units, checking electrical connections, refrigerant lines, and control components. Verified proper mounting and installation integrity of both units on shared concrete pad. Inspected conduit runs and copper line sets along exterior wall for any signs of damage or loose connections that could contribute to cycling problems. Performed refrigerant charge verification using calibrated digital scale to ensure proper system charge levels. Checked for potential refrigerant loss or contamination that could cause compressor short cycling. Inspected both condensing units for signs of weathering, corrosion, or component degradation
Completed full HVAC system installation including new air conditioning unit and evaporator coil. Installed new air handler unit in interior mechanical space with proper labeling for first floor zone identification. Ran and secured refrigerant line set from outdoor condensing unit to indoor coil using insulated copper piping routed through landscaped area with protective conduit. Connected all ductwork to air handler with insulated flex duct properly supported and sealed. Installed electrical disconnect and wiring with licensed electrician coordinating power connections to meet code requirements. Obtained and passed all required permit inspections for installation compliance.
Completed HVAC estimate for lower unit air conditioning system replacement. Assessed existing Lennox condenser unit located on exterior concrete pad, verified electrical panel configuration and circuit breaker assignments for HVAC system compatibility, and documented current installation conditions including outdoor unit placement, electrical connections, and conduit routing. Provided replacement recommendations and pricing for new equipment installation with credit adjustment applied for previous installation work.
Responded to callback for lower AC unit not cooling. Upon arrival, inspected condensate drain system and found clogged drain line causing system shutdown. Cleared obstruction from PVC drain piping and verified proper drainage flow. Tested unit operation and confirmed system cooling normally. Discussed replacement options with occupant and noted military discount eligibility for future equipment upgrade estimate.
Completed routine cooling season maintenance visit as part of recurring membership service. Performed comprehensive system inspection including air handler interior components, blower assembly, refrigerant lines, and electrical connections. Evaluated return air grille and filter condition, noting debris accumulation requiring attention. All mechanical and electrical components found operating within normal parameters upon completion of tune-up procedures.
Responded to service call for HVAC system reported as non-operational despite thermostat indicating normal operation. Upon arrival, performed comprehensive system diagnostics using manifold gauge set to assess refrigerant pressures and overall system performance. Connected diagnostic equipment to service valves at outdoor condensing unit to measure operating pressures and verify refrigerant charge levels. Inspected all exterior components including condensing unit, refrigerant lines, electrical connections, and associated piping. Evaluated system functionality and determined actual operating status of equipment. All diagnostic testing completed and system assessed for proper operation.
Responded to no cooling call on residential air conditioning system installed in 2013. Upon arrival, confirmed indoor blower motor operational but no cooling output from system. Performed diagnostic evaluation of outdoor condenser unit located on exterior foundation. Inspected compressor operation, refrigerant levels, electrical connections, and capacitor function. Unit positioned on wooden platform with proper clearances maintained. Electrical disconnect box verified accessible and functional. Identified root cause of cooling failure and provided customer with findings and repair recommendations to restore system operation.
Responded to no cooling complaint following recent furnace installation. Upon arrival, found Honeywell Home ProSeries thermostat displaying 79°F setpoint with 58°F current temperature, indicating system not achieving desired cooling. Inspected outdoor condensing unit and verified proper installation. Diagnosed issue as thermostat wiring concern related to recent furnace replacement, likely due to improper common wire connection or thermostat configuration during heating system changeout. Corrected wiring connections at thermostat and air handler to ensure proper communication between components. Verified system operation with cooling cycle initiation and proper temperature response.
Completed scheduled cooling season maintenance visit under membership agreement. Performed comprehensive A/C tune-up including system diagnostics with digital multimeter to verify electrical components and proper voltage readings. Utilized manifold gauge set to check refrigerant pressures on both high and low sides, confirming system is operating within manufacturer specifications. Inspected condenser unit, verified all connections secure, and ensured optimal system performance for the cooling season.
# HVAC Maintenance Report Completed routine cooling season preventive maintenance visit per membership agreement. Performed comprehensive system inspection and diagnostic testing on residential air conditioning unit. Utilized digital clamp meter to measure electrical parameters, recording compressor amperage draw of 33.88 amps. Verified proper electrical operation and confirmed readings within manufacturer specifications. Connected refrigerant manifold gauge set with blue low-side and red high-side gauges to service ports. Measured system pressures to evaluate refrigerant charge and overall system performance. All pressure readings fell within normal operating ranges for ambient conditions. Inspected condenser unit exterior components including coil fins, which showed good condition with no significant debris accumulation or damage. System operating efficiently with no deficiencies noted. All equipment functioning as designed. Preventive maintenance service completed successfully.
Completed routine cooling system maintenance visit as part of recurring membership agreement. Performed comprehensive inspection of outdoor condensing unit, verified electrical components and circuit boards functioning properly, checked capacitor condition, and documented system temperatures with digital thermometer showing normal operating parameters.
Responded to emergency AC service call and conducted comprehensive system evaluation in basement mechanical room. Assessed existing furnace, air handler unit, ductwork configuration, and associated HVAC components to provide replacement estimate. Documented current equipment condition, noting galvanized metal ductwork system, electrical connections, and overall installation layout for equipment replacement planning.
Responded to no cooling call on residential air conditioning system. Upon arrival, performed diagnostic evaluation of outdoor condenser unit and associated components. Unit is 10+ years old and located on exterior side of residence. Conducted visual inspection of condenser cabinet, fan assembly, electrical connections, and refrigerant lines. Assessed unit operation and determined cause of cooling failure. Completed necessary repairs to restore system functionality. Verified proper airflow through condenser coil and fan operation. Confirmed system returned to normal cooling operation before departure. Documented equipment condition with photos for service records.
Completed new residential air conditioning system installation including outdoor condensing unit and indoor evaporator coil. System was properly charged with refrigerant using calibrated digital manifold gauges, with final weights verified on precision scale to ensure optimal charge levels. All refrigerant lines were insulated, secured with appropriate fasteners, and routed professionally from outdoor unit to indoor coil connection. Electrical connections completed, condensate drainage established, and system tested for proper operation with all readings within manufacturer specifications.
Completed air conditioning system start-up on residential outdoor condensing unit. Verified electrical disconnect, circuit breaker, and service valves were in proper operating positions. System was prepared for operation with R-454B refrigerant for 35-foot lineset configuration. Performed initial system activation and confirmed proper operation of compressor and condenser fan motor. Measured supply air temperature at floor register, which indicated system was producing conditioned air effectively. Unit is now operational and ready for normal use.
Responded to service call for leaking shut-off valve serving outdoor spigot. Upon inspection, identified the existing brass gate valve with blue wheel handle was failing at the packing nut, causing water seepage. Shut down water supply to the affected line and drained system. Removed deteriorated gate valve and replaced with new quarter-turn ball valve featuring brass body and white lever handle for improved reliability and ease of operation. Installed new copper fittings as needed to ensure proper connection integrity. Verified all joints were properly soldered and leak-free. Restored water supply and tested valve operation through multiple cycles. Confirmed no leaks at valve body, connections, or surrounding pipe insulation. System returned to full service with outdoor spigot functioning properly.
Responded to no-cooling call on recently installed AC unit. Upon arrival, performed diagnostic inspection and discovered severely corroded service valve and compromised refrigerant line connections. Replaced defective brass fittings, repaired copper line connections, and verified system pressures. Unit tested successfully and returned to normal operation.
Responded to emergency AC service call and installed temporary capacitor to restore cooling function, though long-term reliability is uncertain. Documented electrical panel configuration and provided estimate for complete system replacement due to failing components.