
Maintaining functional home and commercial systems and utilities requires consistent attention and investment. Thielmann Heating, Cooling, & Plumbing simplifies home system maintenance by offering comprehensive heating, cooling and plumbing services in Cedarburg. We’re an all-round home comfort service provider completing reliable repairs, maintenance, installations and replacements of utility units.
Our Heating and Air Conditioning Services
If you’re experiencing any heating or air conditioning issues in your home, don’t stress — our certified technicians are ready to help. When you book a service with us, you won’t have to worry about hanging around to ensure everything is going well. We’re highly rated and trusted, which means you can enjoy your time with friends and family while we work on fixing up any HVAC issues you’re encountering.
Repair and Tuneups
If your AC is acting up, but you’re unsure if you need repair, don’t fret — it’s a common predicament. Here are a couple of signs you need AC repair:
- Your AC system is blowing hot air, despite the thermostat setting being correctly.
- There are odd, loud or banging noises from the unit.
- Energy bills spike with no obvious cause.
- Your unit is more than 10 years old.
- Strong, strange odors emit from the AC once it turns on.
- Constant water or refrigerant leaks near the unit.
Our NATE-certified team is ready to restore your AC to good working conditions. Simply give us a call, and we’ll be at your house as promptly as possible. We’ll assess the situation and identify parts needing repair, including the blower, condenser coil, condenser unit, compressor or coolant lines. We offer 24-hour emergency air conditioning repair services, so you never have to be stuck in the humid Wisconsin heat.
Air Conditioner Replacement and Installation Services
If performing continuous HVAC repair services is not enough for your unit, investing in an air conditioning replacement may be your best option. Our certified and licensed technicians will help you find the perfect AC unit for your home. From installation to final inspection, we are committed to your satisfaction and comfort.
Choosing the right replacement can be a little daunting, which is why we assess all aspects of your home. We consider how large your property is, how many people live in the house and the climate. We offer a range of systems, including AC units, ductless mini-splits, heat pumps and packaged units.

Ductless Mini-Split Installation and Repair Services
A ductless mini-split is an excellent option for homeowners looking for versatility in their HVAC system. Mini-splits can offer both heating and cooling depending on the weather. If you need ductless mini-split services in Cedarburg, we have your back. Our team can address all kinds of issues, including:
- Refrigerant leaks
- Compressor issues
- Drainage problems
- Sensor or thermostat malfunctions
- Frozen coils
- Fan or blower issues
- Weird noises or vibrations
Comprehensive Residential and Commercial Heating Solutions
In the cold Wisconsin winters, a reliable, working heating system is essential. If your furnace, boiler or heat pump isn’t properly heating your home or doesn’t even seem to be blowing hot air at all, we can help. Your business’s indoor climate is just as important as your home’s. If your business needs heating solutions, we offer commercial heating maintenance and installation services to keep your business booming and your customers comfortable.
Heat Pump System Installation Services Furnace Cleaning, Installation and Reair services
We’re ready to address any furnace problems you have and can conduct quick furnace repair, maintenance, cleaning and installation services so you can have the heat restored to your home once again. Get same-day service if you notice any of the following signs:
- No heat
- Infrequent cycling
- Leaking unit
- Strange noises
If your furnace needs a replacement or installation, trust us for reliable services. We consider all of your needs to offer you the best solution and can help you select the perfect furnace for your home. Types of furnaces we can help install include:
- Gas furnaces
- Electric furnaces
- Single stage
- 2-stage
- Modulating

Heat Pump System Installation Services
Another heating option for staying warm and cozy during the winter is installing a heat pump. They are just as effective as furnaces and offer more energy efficiency and versatility.
Our technicians provide dependable heat pump installation services for homes in Cedarburg, Wisconsin and will collaborate with you to choose a system with the correct specifications.
Boiler Installation and Repair Services
Keep your home warm with an effective boiler. If you notice any issues with your current boiler, contact us for a repair service. We’re prompt, professional, and thorough with our repair services. If you need an entirely new boiler, no problem—we also do boiler installations.
f you notice that there is insufficient heat, foul odors, cold air, or a yellow pilot light, give us a call. There is a high chance your boiler needs repair.
Thermostat Installation and Repair Services
Thermostats are highly essential in regulating the temperature of your home. If you have a thermostat that isn’t working properly or is on its last legs, you need to replace it or repair it ASAP. Without a functioning thermostat, you won’t get the heating or cooling you need, even if your AC unit or furnace is in good working order.
Cedarburg, WI Plumbing Experts
Thielmann Heating, Cooling, and Plumbing is proud to serve Cedarburg, WI by providing trusted plumbing solutions for homeowners and business owners alike. Regardless of if you’re dealing with a leaking faucet, busted pipe, or need a new water heater installed, our licensed plumbers handle it all with professional plumbing services in Cedarburg, WI. We focus on long-term repairs, no quick fixes, ensuring your plumbing systems keep working all year long.
From small repairs to complete system replacements, Thielmann is the team you can depend on. We have served Wisconsin families for over 95 years, offering reliable service and honest communication on every job. When your home’s plumbing fails, we respond quickly to get your system back in working order. Our experts inspect your plumbing, explain the problem clearly, and recommend the most practical solution for your budget.
Our Cedarburg plumbing services include:
- Water Heater Repair and Installation (Tank and Tankless)
- Drain Cleaning and Clog Removal
- Water Line Repair and Replacement
- Fixture Installation and Upgrades
- Sump Pump Services
- Garbage Disposal Repair and Replacement
- Bathroom and Kitchen Plumbing
- Water Treatment and Filtration Systems
If you start to notice discolored water, slow drains, or rising water bills without an increase in usage, call Thielmann Heating, Cooling, and Plumbing right away. We will provide you with upfront pricing and no-pressure repair recommendations. No matter the extent of the problem, Thielmann’s Cedarburg plumbers can handle anything your home or business throws your way. Call us today (262) 299-6197 at or contact our team online to get your next plumbing service scheduled.
Our Professionals Will Help You Stay Comfortable During the Fall, Winter, Spring, and Summer Seasons
As a place that experiences all four seasons, Cedarburg, Wisconsin is prone to having humid, sunny summers and frigid, bitterly cold winters. Some days are even below freezing, dipping into the 20s.
To avoid an HVAC system outage on a cold winter day, it’s critical to work with our team to perform continuous maintenance. Luckily, our technicians will help you clean and prepare your furnace for the winter season.
On the contrary, summer days in Cedarburg can be as hot as the mid-80s. The local area gets an average of 32 inches of rain per year, including some light snowfall during the winter. In a climate like this, you need to stay equipped with an efficient, working HVAC system.
Make sure to keep Thielmann Heating, Cooling, & Plumbing in mind if you ever need someone to service your heating or cooling system.
Book a Heating, Cooling, or plumbing Appointment With Our Team in Cedarburg, Wisconsin
Serving Waukesha and the surrounding areas, like Cedarburg, our Wisconsin-based team is ready to help you with the services you need. From heating and cooling to plumbing and unique HVAC solutions, we have the expertise and experience to address your challenges and provide high-performing results. Contact us today to schedule your service or get a free estimate!
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 Cedarburg, WI
Job Locations and Reviews
Responded to emergency service call for non-operational air conditioning system. Successfully restored system to working condition during initial visit. Conducted comprehensive site assessment for replacement estimate during follow-up appointment. Evaluated existing outdoor condenser unit showing significant age-related deterioration, including weathering, discoloration, and rust staining on cabinet surfaces. Inspected basement mechanical area, documenting existing infrastructure including copper refrigerant lines, gas piping, and PVC drainage system. Assessed installation location on exterior wooden deck and reviewed accessibility for equipment replacement. Photographed current system configuration and surrounding conditions to support replacement recommendations.
Responded to no cooling complaint on residential split system. Upon arrival, connected manifold gauges to outdoor Lennox condenser unit to verify system pressures and diagnose cooling issue. Customer suspected thermostat malfunction; performed diagnostic testing to determine root cause. System evaluation included pressure readings and operational assessment of both indoor furnace/air handler and outdoor condensing unit to identify failure point and restore cooling functionality.
Responded to no cooling call and performed system diagnostics using refrigerant manifold gauges. Measured system pressures with suction side reading 128.4 psig at 34.2°F and high side reading 249.8 psig, indicating potential refrigerant charge issues or airflow restrictions requiring further evaluation.
Completed estimate for one-to-one mini split replacement system. Evaluated existing Mitsubishi outdoor condenser unit mounted on metal stand with wall-mounted indoor unit, inspected electrical panel circuit configuration including dedicated AC compressor breaker, and documented current installation including refrigerant line routing and condensate drainage setup. Provided replacement system specifications and installation requirements.
Responded to no cooling complaint on residential HVAC system. Upon inspection, found significant rust and corrosion on condensate drain pan indicating active water damage and potential secondary drain pan failure. System was operational but unable to maintain desired temperature setpoint. Documented equipment condition with photos showing corroded components and advised homeowner of necessary repairs to prevent further deterioration and restore proper cooling function.
Responded to emergency service call for AC system with recurring refrigerant loss—system had previously required 2lbs of refrigerant that subsequently leaked out. Performed comprehensive system evaluation and provided replacement estimate for aging HVAC equipment located in basement utility area, documenting existing furnace and associated mechanical systems for customer consideration.
Completed comprehensive AC membership tune-up and preventive maintenance inspection on residential HVAC system. During inspection, discovered significant accumulation of leaves, twigs, and organic debris within electrical compartment, creating potential fire hazard and compromising system safety. Removed all debris from compartment, cleaned electrical connections, and verified proper operation of all control relays and safety switches. Inspected furnace and air handler units, confirmed proper venting through PVC exhaust pipes, and documented system condition with photographs for customer records.
Responded to service call for ductless mini-split system maintenance. Upon arrival, inspected the wall-mounted indoor air handler unit and discovered significant debris accumulation in the condensate drain pan, with dark staining and buildup along the bottom and edges indicating drainage concerns. Cleaned the drain pan thoroughly, removing dirt and debris to restore proper condensate drainage function and prevent potential water overflow issues.
# HVAC Mini Split Installation Completed full installation of ductless mini split air conditioning system for residential property. Mounted outdoor condenser unit on concrete pad at exterior foundation with proper clearances and secure mounting. Ran refrigerant lines, electrical connections, and condensate drain through exterior wall penetration with appropriate sealing. Installed indoor air handler unit on interior wall at optimal height for air distribution. System positioned in living space with two-tone painted walls, mounted above existing radiator heating system. Completed all electrical connections from outdoor unit to indoor evaporator, secured line set with proper insulation and protection. Tested system operation, verified refrigerant charge, confirmed proper drainage, and ensured all connections were leak-free and secure. System commissioned and left in full working order.
Completed scheduled cooling system maintenance visit as part of recurring membership agreement. Performed comprehensive inspection of outdoor condensing unit, which revealed heavy accumulation of dirt, dust, and debris on exterior housing and condenser coil fins. Noted significant environmental buildup affecting airflow efficiency, with brownish-tan discoloration visible across fin assembly and exterior panels. Inspected refrigerant lines, electrical connections, and internal components including capacitor and wiring. Unit mounted on concrete pad with evidence of extended outdoor exposure and weathering requiring attention to maintain optimal system performance.
Completed comprehensive air conditioning tune-up service on residential Carrier HVAC system. Performed standard maintenance procedures including inspection of indoor furnace unit and outdoor condenser, verified proper operation of all components, checked refrigerant lines and connections, and documented system condition with photographs showing equipment in good working order with no immediate concerns identified.
Responded to service call for Mitsubishi Electric mini-split heat pump system not cooling upstairs zone. Upon arrival, performed diagnostic inspection of outdoor condenser unit and indoor air handler. Verified system installation date and confirmed active warranty coverage for parts and labor. Conducted visual inspection of outdoor unit, checking refrigerant line connections, condenser coil condition, and overall equipment operation. Documented equipment condition with photographs showing proper installation on concrete pad with appropriate clearances. System evaluated for performance issues affecting cooling capacity in upper level zone.
Completed preventive maintenance tune-up on residential split system HVAC equipment, including Lennox furnace and outdoor condensing unit. Performed comprehensive inspection of indoor air handler with refrigerant lines, verified electrical connections and controls, and serviced outdoor condenser unit requiring cleaning of protective grilles showing dirt accumulation and weathering. All components operational and system functioning within normal parameters upon completion.
Completed routine cooling system maintenance visit as part of recurring membership agreement. Connected manifold gauges to outdoor condensing unit to verify refrigerant pressures and system performance. Inspected condenser coil condition, noting debris accumulation at base of unit and dirt buildup on exterior fins, and evaluated fan motor operation and overall equipment functionality.
Completed dual furnace replacement in residential basement mechanical room. Installed two new furnace units with associated ductwork, copper refrigerant lines, and PVC condensate drainage systems. All equipment properly mounted, leveled, and secured with manufacturer specifications met for clearances and ventilation requirements.
Conducted on-site assessment for residential cooling solution in two-story home with existing chimney-vented boiler system. Evaluated upstairs area with four bedrooms experiencing excessive heat issues and reviewed basement mechanical space with exposed joists, existing ductwork, and utilities. Recommended hybrid approach consisting of ducted mini-split system for second floor bedrooms and ductless mini-split units for first floor, with consideration for potential soffit installation or attic fan to address ventilation concerns and improve overall climate control efficiency.
Responded to no cooling call on newly installed HVAC system where contractor accidentally drove nail through refrigerant line during construction work. Located punctured copper refrigerant line at outdoor unit, confirmed active refrigerant leak, and coordinated repair to restore system operation. Documented damage to refrigerant piping with photos showing compromised copper fitting and surrounding installation area for warranty and repair documentation purposes.
Conducted on-site assessment for non-functional 40-gallon water heater replacement in residential utility area. Evaluated existing installation, documented current equipment condition and workspace configuration, and provided comprehensive replacement estimate to customer.
Completed comprehensive evaluation of existing commercial HVAC system consisting of two outdoor condensing units showing significant age-related deterioration, dirt accumulation on condenser coils, and general wear. Provided detailed estimate for complete system replacement including removal of existing equipment, installation of new high-efficiency commercial-grade units with proper refrigerant lines, electrical disconnects, and concrete pad placement to ensure optimal performance and energy efficiency.
Completed comprehensive assessment of existing HVAC system for replacement estimate. Documented current outdoor condensing unit showing normal wear with debris accumulation on top cover and standard electrical disconnect configuration with PVC conduit routing from exterior wall. Inspected and photographed interior electrical panel in basement utility area, noting existing breaker configuration with one tripped breaker indicator and verifying available electrical capacity for new equipment installation.