
In the local Burlington, Wisconsin, area, two things are absolutely certain. First, it’s the birthplace of none other than Tony Romo. Second, the weather here can be quite a challenge, whether it’s scorching hot or bone-numbingly cold. But fear not! You can keep your home or business comfortable all year round by making sure your HVAC and plumbing systems are up to the task.
Our team offers extensive heating, ventilation and air conditioning (HVAC) and plumbing services for property owners in Burlington. We have the tools and expertise to get your systems working right so you can enjoy a smooth-running property throughout the year.
For top-tier services in Burlington, entrust the services of Thielmann Heating, Cooling, & Plumbing by calling (262) 384-6407 or filling out this form to get started.
Dependable AC Services
Keeping cool in the summer requires a good air conditioner (AC). Our dedicated team has the knowledge and skills to provide trusted AC services that help prevent unexpected breakdowns and boost the efficiency of your system. We service the following types of cooling systems:
- Air conditioners: We can work on all models of air conditioning systems for residential and commercial properties.
- Heat pumps: We can repair, replace or maintain energy-efficient heat pumps that deliver warm air to the outside of the property.
- Ductless mini-splits: Get services for ductless HVAC units, which offer climate control for single rooms.
Whether you need air conditioner repair, replacement or maintenance, count on our team to get the job done right. From major overhauls to routine maintenance or repairs, we’ll tend to your air conditioner for a reliable system all season. Our AC services include:
- Air conditioning repair: Refrigerant leaks, frozen coils or a faulty capacitor are some signs you need AC repairs. A technician will examine the unit and fix any issues.
- Air conditioning maintenance: Make the most of your AC. Annual tuneups can help boost the unit’s performance, improve its longevity and avoid costly surprises.
- Air conditioning installation: If it’s time for a new cooling unit, rest assured the HVAC specialists at Thielmann Heating, Cooling, & Plumbing can install your new AC with precision.
Ductwork Services in Burlington, Wisconsin
The air ducts around your home or business are the only link between your HVAC system and your rooms. You may be inconvenienced if any ducts are cracked, broken, disconnected or blocked.
Our team provides comprehensive HVAC and ductwork services for customers in Burlington, Wisconsin, including installation, cleaning, maintenance and repairs.
For all your ductwork needs, call (262) 299-6197 or contact us online to schedule services today.

Top-Rated Heating Services
Staying warm during Wisconsin’s winters can be a struggle if your furnace or boiler isn’t working as it should. No matter what issue you have with your heater, we provide superior heating services. Our technicians offer convenient furnace repair and boiler maintenance services and are available to restore comfort to your property. More about our heating services:
- Heating repairs: If your heater is acting up, get dependable, fast repairs. We can mend heat pumps, boilers, oil and gas furnaces and packed units.
- Heating maintenance: Ensure your heater keeps working as it should with regular heating maintenance from Thielmann Heating, Cooling, & Plumbing. We’ll thoroughly inspect your entire heating system and identify issues that need repair.
- Heating installation: Installing a new heater can clean your indoor air better, use electricity more efficiently and give you more peace of mind. Count on us to install your heater with professionalism and attention to detail.
Reliable Indoor Air Quality Services
The team at Thielmann Heating, Cooling, & Plumbing offers the following indoor air quality services to keep your spaces cleaner and healthier:
Professional Plumbing Services
You rely on your plumbing daily, and when it malfunctions, you need fast service. The expert plumbers at Thielmann Heating, Cooling, & Plumbing are ready to provide quality plumbing assistance. With our assistance, you can enjoy a system with consistent water pressure and durable fixtures. Our plumbing services include:
- Bathroom and kitchen remodels
- Garbage disposal services
- Hose bib replacements
- Sump pump services
- Water conditioning
- Faucet and toilet replacements
- Water heater services
- Plumbing installations
- Plumbing repairs
- Broken pipe repairs
Enjoy clean, safe air throughout your home.Schedule indoor air quality services in New Berlin by contacting us online or calling (262) 299-6197.

See What Makes Us Different
We’re proud to provide quality work with every project. Here’s why you should choose us:
- Committed to quality: We value transparency and have an A+ rating on the Better Business Bureau (BBB).
- Responsive and respectful: Our support staff and technicians listen to your needs and answer every query you may have.
- Seasoned experts: We have licensed technicians skilled in handling all your HVAC and plumbing needs.
Choose Thielmann Heating, Cooling, & Plumbing in Burlington, WI
Since 1929, our team has been the choice for top-quality residential and commercial HVAC services in Burlington and beyond. Our NATE-certified technicians can service all brands, install Lennox-brand units, offer 24/7 emergency care and more.
We’re also proud to extend our capabilities to plumbing, providing comprehensive services you can trust. Plus, we offer upfront pricing, financing options, special deals and a job well done.
For more information, contact us online. You can also call us at (262) 384-6407 or schedule the HVAC and plumbing services you need online.
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 Burlington, WI
Job Locations and Reviews
Conducted water heater assessment in basement utility room. Existing unit shows signs of age with potential efficiency concerns. Recommend replacement with newer model that includes updated PVC ventilation system and improved pump assembly to ensure better performance and reliability.
Completed installation of a complete HVAC system including a new Honeywell ProSeries programmable thermostat and furnace unit with proper ductwork connections. System features PVC exhaust venting and copper line connections, with all components tested and functioning correctly at 54 degrees.
Conducted comprehensive inspection of the HVAC ductwork system, revealing significant interior dust accumulation and possible early-stage mold formation. Internal duct surfaces showed signs of aging with visible rust/corrosion developing at connection points. Performed detailed photo documentation of duct conditions to establish baseline for future maintenance needs under the agreement terms.
Performed routine maintenance tune-up on customer's furnace. Inspected internal components including control board and wiring connections. Furnace is operational with all safety systems functioning properly.
Conducted comprehensive assessment of existing HVAC system located in basement utility room, which includes an aging furnace with connecting metal ductwork and nearby water heater. Provided detailed replacement estimate for complete system upgrade based on observed condition of equipment and installation environment, noting exposed utility infrastructure and limited workspace considerations.
Performed comprehensive HVAC tune-up including inspection of internal components and electrical connections. Conducted full combustion analysis using Testo 310 II analyzer, which revealed proper combustion efficiency at 92.7% with CO2 at 6.39% and minimal CO levels (7 ppm). System is operating within manufacturer specifications with all safety controls functioning correctly.
Performed comprehensive tune-up on gas furnace system. Conducted combustion analysis with Testo 310 analyzer showing excellent efficiency rating of 94.5% with acceptable CO levels (14ppm). Inspected internal components including control board, motor, and wiring connections. All systems operating within manufacturer specifications after service.
Performed comprehensive tune-up on customer's HVAC system, including inspection of internal components and electrical connections. Removed front panel to access and clean critical parts, verified proper operation of electronic controls, and checked condensate drainage system. All components functioning within normal parameters; system restored to optimal operating condition.
Completed routine tune-up on residential gas furnace system. Conducted comprehensive combustion analysis using Testo 310 analyzer, verifying proper operation with readings showing 86.7% efficiency, 12.4% O₂, and 9 ppm CO levels within acceptable parameters. Inspected internal components including blower assembly, control boards, and venting system; replaced air filter to maintain optimal system performance.
Performed inspection and maintenance of HVAC ductwork system, focusing on proper connection and sealing of metal ducts including 90-degree elbow joints. Also cleaned and cleared floor drain using specialized snake tool to ensure proper drainage and prevent potential water backup issues that could affect indoor air quality.
Replaced corroded copper supply lines and installed new angle stop valves at customer's fixture. Removed existing deteriorated flexible braided hoses and installed new stainless steel supply lines. Tested system for proper function and verified no leaks at all connection points.
Conducted comprehensive HVAC system replacement in utility room, installing new air handler unit with proper sheet metal ductwork connections. Completed installation of condensate drain system using PVC piping with appropriate connections and verified proper functioning of all electrical components including control board and wiring harnesses.
Responded to no-heat complaint for aging system (10+ years old). Diagnosed faulty blower motor after examining heat exchanger and burner assembly. Removed failed blower motor assembly, installed new replacement motor and verified proper system operation. System now heating correctly with all components functioning within specifications.
Performed comprehensive furnace tune-up, inspecting all internal components with front panel removed. Verified proper operation of blower fan, heat exchanger, and combustion system. Observed normal flame pattern and confirmed electrical connections were secure with no visible issues on the control board. System is operating within specifications after service.
Performed seasonal tune-up on gas furnace with Honeywell accessory. Removed access panels for comprehensive inspection of internal components including blower motor assembly and control board. Conducted temperature testing using UEI EMT1 digital meter, confirming system operating temperature at 32°. All electrical connections, wiring, and venting (PVC) were inspected and verified to be in proper working condition.
Conducted inspection of existing HVAC system located in crawl space, documenting condition of galvanized ductwork and deteriorating air handler unit. Evaluated plumbing connections including PVC piping (Freedom PVC 1120 SCH 40) and electrical wiring to determine replacement requirements. Recommended full system replacement due to visible water damage on foundation surface beneath unit and aging components.
Responded to no-heat call for Daikin system under 10 years old. Upon inspection, discovered faulty ignition control board with visible burnt wiring connections. Replaced control board, checked all electrical connections, and verified proper system operation through complete heating cycle test. Unit now functioning properly with normal flame sequence and consistent heat output.
Performed routine tune-up on HVAC system. Identified and documented insulation damage with signs of burning/scorching in one section. Inspected ductwork connection point showing wear. Recommended follow-up assessment of affected components for potential replacement.
Performed diagnostic inspection of the UltraTalk ZWC Control Pro system with functioning LCD display indicating proper outside temperature reading of 47°. Verified all zone controls (1-3) were operational and confirmed proper terminal connections on the main circuit board. System showing normal operation with green indicator light confirming power status.
Performed comprehensive furnace tune-up including combustion analysis using Testo 310. Measurements revealed optimal system efficiency at 90.7% with acceptable CO levels (9 ppm raw/26 ppm air-free) and proper CO2 concentration at 4.14%. Conducted full inspection of internal components, verified electrical connections and control board functionality, and confirmed blower assembly operation.