
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
Performed seasonal tune-up on Lennox HVAC system. Inspected condensate drain assembly in attic and verified proper drainage with no blockages. Examined main unit in utility room, confirming all connections secure and system operating within manufacturer specifications.
Performed routine tune-up on HVAC system, inspecting internal compartments and verifying proper operation of control board. Observed system functioning correctly with normal indicator light patterns on circuit board, confirming system is operating within specifications.
Performed comprehensive tune-up on aging furnace system. Inspected blower motor assembly, electrical connections, and gas valve components. Cleaned dust accumulation from interior components and verified proper operation of all mechanical systems.
Performed scheduled tune-up on HVAC system, including electrical testing with multimeter to verify proper voltage and amperage readings. Inspected and secured loose wiring connections, ensuring all fasteners and clips were properly attached to system components. System was returned to normal operating condition with all measurements within manufacturer specifications.
Successfully installed a new Lennox gas furnace in basement mechanical room, including proper connection to existing ductwork and PVC venting system. Installation was completed according to manufacturer specifications with all safety checks performed and system tested for optimal operation.
Completed inspection of existing HVAC ductwork system in utility/mechanical room. Identified aging galvanized metal ducts with multiple elbow joints, connected PVC drainage piping, and associated copper lines. System appears functional but shows signs of normal wear. Photographed current installation for reference in preparation for proposed replacement.
Successfully installed new tanked water heater in utility room, including proper connection of ductwork, electrical wiring, and associated piping components. Ensured all connections were secure and system was properly mounted to wall with appropriate brackets and hardware.
Performed scheduled maintenance inspection on plumbing infrastructure. Examined PVC pipe system including elbow joints and connections for proper installation and signs of leaks. Inspected adjacent utility equipment and verified secure mounting of all components to wall/ceiling brackets.
Performed comprehensive tune-up service on Rheem Criterion II gas furnace. Inspected internal components including blower motor, control board, and wiring connections. Examined exhaust venting system with particular attention to the 90-degree elbow joint, noting typical dust accumulation but confirming proper installation and function. Verified system operation with all safety mechanisms responding correctly as indicated by operational blue indicator light.
Performed comprehensive tune-up service on HVAC system, inspecting the interior metal enclosure for signs of wear. Documented unit serial number (0511 N1) and examined access panels and ventilation features. System exhibited normal operational wear with no significant issues detected.
Completed visual inspection of existing Lennox furnace system in basement mechanical room. Documentation of current installation shows furnace with front panel removed to assess internal components including control board, blower motor, and wiring. Adjacent water heater and existing ductwork were also evaluated for compatibility with potential replacement system.
Performed routine maintenance on Bryant furnace system including inspection of control board and electrical connections. Examined and tested ignition system components and verified proper operation of the Honeywell control system. All safety switches functioning correctly with no issues found during the tune-up service.
Performed routine maintenance tune-up on HVAC system. Conducted electrical measurements using Fieldpiece SC680 multimeter, verifying DC voltage at 2.3V. Checked system temperature with PDT659 thermometer, confirming operating temperature of 100.9°F, which is within normal parameters.
Completed comprehensive furnace tune-up on residential HVAC system. Performed thorough inspection of internal components including control board and electrical connections, with diagnostic testing of ignition system and heat exchanger. System is now operating at optimal efficiency with all safety checks verified.
Performed comprehensive evaluation of existing HVAC system in unfinished basement area, documenting condition of metal ductwork, air return trunk, and Bryant unit installation. Assessment determined need for system replacement with recommendation for updated equipment to improve efficiency and performance.
Completed installation of a new Goodman complete HVAC system for the customer. Installed outdoor condenser unit on concrete pad with proper electrical connections and refrigerant lines. System was pressure tested, evacuated, and charged according to manufacturer specifications, with all operations verified during final testing and commissioning.
Performed standard tune-up service on HVAC system. Inspected ductwork and ventilation components for proper installation and airflow. Examined electrical connections at circuit board, checking all wiring terminals for secure connections and signs of wear. System restored to optimal operating condition.
Conducted routine HVAC tune-up service including inspection of the flame sensor circuit board, which displayed a "0" reading indicating proper operation. Verified system leveling using carpenter's level, confirming equipment is properly balanced for optimal performance.
Performed emergency gas leak investigation on Honeywell HVAC system. Identified leak at connection point near control board and electronic air cleaner assembly. Repaired compromised gas line fitting, checked all electrical connections including multi-colored wiring harness, and verified proper operation of system. Final leak test confirmed successful repair with no gas detection readings.
Inspected residential HVAC system consisting of a Carrier furnace in basement utility area and two outdoor heat pump units. Documented snow accumulation on exterior units which may affect proper ventilation and operation. System appears to include a 3-ton capacity based on markings on the galvanized ductwork. Interior installation includes PVC ventilation piping and standard connections with no visible damage.