For over 90 years, the team at Thielmann has provided customers in Waukesha, Wisconsin with reliable, top-notch HVAC repair services. From heating and cooling to air quality and installation, we do it all so you can rest assured your home will be in its best condition and your family will be comfortable.
We also know life gets busy—that’s why we offer easy, convenient scheduling. Give our technicians a call at (262) 299-6197 or fill out our online form and someone will get back to you quickly.
Our Professionals Will Keep Your House Comfortable During the Fall, Winter, Spring, and Summer Seasons
The average temperatures in Waukesha, Wisconsin are radically different from winter to summer. Winters are known for being freezing, with some of the coldest months having temperatures in the low 20s. In contrast, the summers are humid, warm, and muggy.
Summer temperatures in Waukesha hit around 75°F but can get up to 90°F. The humidity from the surrounding lakes and rivers makes it feel hotter in the local area. Stay cool in this summer heat, and cozy and warm in the winter, when you work with our team of NATE-certified technicians. We will keep your house habitable throughout each season by helping you maintain your furnace, heat pump, boiler, or central air conditioner.
Air Conditioner Replacement and Installation Services
Sometimes, your air conditioner is on its last leg and the best move is not to repair it but to replace it completely. If this is the case our team of certified technicians is ready to help. With decades of experience in AC installation and replacement, we can handle putting in a new AC unit for you from start to finish.
We also provide heating and cooling services in Waukesha, Wisconsin for the best brands on the market and have flexible, easy financing options so you can stay within your budget.
Air Conditioning Repair Services
Summers in Wisconsin can get muggy and hot. Make sure your home is up for the task of keeping you cool by scheduling air conditioning repair or air conditioning tune-up services.
The best way to ensure your system is ready for summer is by having a technician come over and assess the condition of your air conditioner to confirm if it requires repairs.
Here are some of the components of an AC system we will check to see if it needs repair:
- Evaporator coil
- Compressor
- Condenser coil
- Expansion valve
- Filter
- Fan
We also offer air conditioner installation services for old systems that cannot be fixed. If you notice any weird noises, strange smells, or a lack of cold air, chances are you will need a repair or replacement.
Ductless Mini-Split Services
Homeowners in Wisconsin love ductless mini-splits because they are great for the ever-changing weather, from the frigid winters to the humid, muggy summers. Ductless mini-splits are super versatile and offer both heating and cooling options.
We offer the following mini-split services:
- Installation
- Replacement
- Repair
- Maintenance
- Inspections
Our team offers superior HVAC repair services and is fully equipped to handle any ductless mini-split issues, like refrigerant leaks, compressor problems, drainage malfunctions, frozen coils, electrical problems, blower issues, weird noises, and more.
Furnace Repair and Tune-Up Services
Keep your home warm and cozy for the winter with our reliable furnace repair and tune-up services for local residents in Waukesha, Wisconsin.
We can work on any system you have, like:
- Gas furnaces
- Oil furnaces
- Heat pumps
- Packaged units
- Boilers
Furnace Installation and Replacement Services
We can install gas, oil, or electric systems for your convenience. Whether your old system is on the fritz and you need a furnace replacement, or you have a brand-new property and need a furnace installed, we will take care of it.
Heat Pump System Installation Services
Wisconsin residents also use heat pumps to stay warm in the cold winters. Our NATE-certified technicians specialize providing extensive heating and cooling services in Waukesha and will keep you updated from start to finish on the project.
To receive support with a heat pump installation or heat pump repair, contact or HVAC contractors to receive support. Our technicians have the training necessary to fix your broken heat pump system.
Boiler Installation and Repair Services
Another popular heating system, boilers are a great energy-efficient way to heat your home. We offer HVAC installation, repair, maintenance, and tune-ups on boilers.
If you notice any of the following signs, contact us for boiler repair:
- Insufficient heat
- Foul odors
- Strange noises
- Cold air
- Yellow pilot light
We also offer routine boiler maintenance to expand the longevity of your system and ensure it is fully functional when you need it.
Thermostat Installation, Replacement, and Repair Services
Your thermostat is the remote control for your climate comfort. It controls heating and cooling functions but is often one of the most overlooked components of your HVAC system.
If you begin noticing malfunctions in your HVAC system, before rushing to assumptions that a motor is broken or you need a full replacement, consider your thermostat. We offer thermostat installation, replacement, and repair services.
Commercial Heating Maintenance and Replacement Services
Just like homes, businesses and commercial spaces need to offer a good climate-controlled environment to keep patrons and employees alike comfortable.
If you notice anything off about your business’s HVAC system, call the professionals at Theilmann to receive fast and convenient commercial heating repairs and services. Our 90 years of expertise means we’ve seen it all, not just in residential spaces but in commercial ones as well.
Professional Plumbing Services in Waukesha WI
Thielmann Heating, Cooling, and Plumbing has been serving Waukesha homeowners for over 90 years. Our licensed plumbers handle every type of plumbing issue with precision and care. From minor leaks to full system replacements, we provide clear solutions that keep your home running smoothly.
A plumbing issue can quickly disrupt your day. That’s why we respond quickly and get the job done right the first time. Our technicians inspect your system, identify the problem, and provide straightforward options that fit your needs and budget. We use trusted materials and proven methods to ensure repairs last.
We offer a full range of plumbing services in Waukesha:
- Drain & Sewer Cleaning: Clear out blockages and buildup to restore smooth water flow and prevent future clogs.
- Fixture Repair & Installation: Replace or repair faucets, toilets, and sinks for improved performance and reduced water waste.
- Water Heater Repair & Replacement: Maintain, repair, or upgrade tank and tankless models for steady hot water and better efficiency.
- Water Treatment & Filtration: Remove hard minerals and impurities for cleaner, healthier water throughout your home.
- Water Line Repair & Replacement: Fix damaged pipes or install new water lines to maintain consistent pressure and prevent leaks.
- Sump Pump Repair & Installation: Keep your basement safe from flooding with expert sump pump maintenance and installation.
Homeowners throughout Waukesha trust Thielmann Heating, Cooling, and Plumbing for honest work and dependable service. We take pride in our craftsmanship and commitment to customer satisfaction. When you need professional plumbing you can trust, call Thielmann today and let our experts take care of your home.
Take Back Your Weekends and Worry Less About Cooling and Heating Repairs in Your House
One of the advantages of working with our team of professionals includes having more time to enjoy your free time in Waukesha. While we take care of solving your HVAC problems, you can spend your time out on the town.
Take a stroll around Sanctuary Woods or visit the Waukesha County Historical Society and Museum. Our technicians will quickly inspect and fix your malfunctioning furnace or air conditioner to ensure you have time to enjoy your weekend.
Book a Heating or Cooling Appointment With Our Team in Waukesha
Our team in Waukesha is available any day for heating and cooling services. From boiler repair and heat pump installation to AC maintenance plans and heaters repairs, we have you covered. We also are skilled in air quality and offer duct cleaning, whole-home humidifiers, and other air purification services.
Simply fill out our form online or give us a call at (262) 299-6197 to receive assistance.
Recent Jobs and Reviews in Waukesha, WI
Job Locations and Reviews
Conducted routine tune-up of HVAC system in utility area. Inspected plumbing infrastructure including PVC drainage/ventilation pipes and metal ductwork, confirming all connections are secure and functional. Verified system operation and found no signs of damage or leakage issues in the existing piping system.
Conducted combustion analysis on commercial furnace using Testo 310 analyzer, which recorded flue gas readings of 68°F and 14 PPM CO. Inspected adjacent PVC venting system (ASTM F891-16 PPFR compliant) for proper installation and function. All readings within acceptable parameters.
Completed installation of a new furnace with electronic control board. Performed comprehensive wiring connections between the circuit board and system components, ensuring proper electrical configuration of all control wires (red, blue, yellow, green, white). Verified system functionality through diagnostic display testing.
Conducted inspection of existing ductwork system and water heater. Observed aged metal ductwork with significant dust accumulation installed within wooden framing structure. Noted Rheem Professional water heater in functional condition with proper ventilation and supply line connections mounted against concrete block wall in utility area.
Performed comprehensive tune-up on aging HVAC system, identifying significant corrosion and water damage on the furnace base panel. Conducted electrical diagnostics using SC680 multimeter, which revealed capacitor reading of 6269 microfarads, indicating potential system inefficiency. Inspected blower assembly and ductwork connections for proper sealing and functionality.
Conducted inspection of pressure regulator valve installation in utility area. Observed significant corrosion and mineral buildup on copper pipes and connections, particularly at valve joints. Identified aging components with visible oxidation requiring future maintenance attention.
Conducted inspection of residential water heating system in utility area, documenting proper installation of water heater with associated copper and PVC piping infrastructure. Examined electrical circuit breaker panel on concrete block wall, verifying appropriate connections and breaker configuration for the HVAC system.
Performed routine maintenance inspection on Lennox residential furnace. Unit was examined for operational status and safety compliance. All systems functioning normally with no issues detected.
Conducted comprehensive inspection of existing boiler system in basement utility area. Identified aged blue boiler unit with exposed internal components and wiring requiring attention. Noted copper piping configuration, expansion tank mounting, and electrical connections for evaluation of replacement options.
Performed routine maintenance on HVAC system as part of prepaid service agreement. Conducted temperature diagnostics using UEi PDT650 digital thermometer at supply vents, recording air temperature reading of 40.49°F. System appears to be functioning within normal operating parameters.
Responded to a no-heat call for a Goodman furnace under 10 years old. Upon inspection, removed access panel to examine internal components including ignition assembly and wiring. Diagnosed and resolved issue with the gas burner system, restoring proper heating function to the unit.
Successfully completed installation of a complete HVAC system featuring a new air handler unit with properly connected condensate drain system utilizing PVC piping with appropriate pitch and trap. Installed and pressure-tested all copper refrigerant lines, verified proper electrical connections, and ensured the unit was properly elevated off the floor for optimal airflow and drainage.
Performed routine maintenance on HVAC system, including inspection and replacement of heavily soiled air filter. Unit identification confirmed via serial number S645257 on equipment tag. System functionality verified after service completion.
Responded to no-heat service call for a Lennox furnace less than 10 years old. Diagnosed and removed ice buildup in the condensate drain line causing system shutdown. Cleared blockage, verified proper drainage, and confirmed normal system operation with complete heating cycle.
Conducted an assessment of an existing HVAC system in basement utility area, documenting a Pioneer unit with dual PVC ventilation pipes. Evaluation included inspection of the furnace cabinet, internal wiring components, drainage system, and connection points in preparation for replacement recommendation.
Conducted comprehensive inspection of two residential electrical panels to evaluate capacity for HVAC replacement. Both panels feature standard circuit breakers with dedicated HVAC connections. Verified current A/C circuits are properly labeled and positioned for system replacement. No visible damage or anomalies detected in either panel that would impede installation of new HVAC equipment.
Performed routine maintenance on Lennox HVAC system, including inspection of all components and electrical testing. System readings showed normal operation at 52.8 on SC680 multimeter. Equipment is in good condition with proper installation of PVC venting and electrical connections.
Diagnosed no heat issue on relatively new furnace system. Upon inspection, found failed flame sensor causing improper ignition. Cleaned and reinstalled flame sensor, verified proper operation through multiple heating cycles. System now functioning correctly with normal flame signal.
Performed diagnostic inspection on customer's furnace unit after reported heating issues. Opened front panel to examine internal components including blower motor, control board, and exhaust system. All connections and wiring were verified secure, and system was tested through complete operation cycle with proper functionality confirmed.
Inspected ductwork system revealing accumulated dust and residue affecting airflow. Diagnosed and serviced 10+ year old heating system that was failing to maintain set temperature. Verified Honeywell thermostat functionality (confirmed proper settings at 73°F with system in heat mode) and cleaned ventilation components to restore proper operation. System now functioning correctly with improved airflow.
