
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
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.
Conducted inspection of aging copper water supply lines exhibiting significant oxidation and corrosion. Identified brass fittings with tarnishing and examined red valve handles and flexible metal hoses for functionality. Evaluated black supply line with brass fitting and spiral metal protective covering, noting potential replacement requirements due to deterioration around connection points.
Conducted scheduled preventive maintenance under existing agreement. Performed comprehensive electrical diagnostics using Fieldpiece SC680 digital multimeter, verifying system voltage readings (49.43V) and current draw (0.23A) within manufacturer specifications. All electrical connections inspected and confirmed secure.
Performed comprehensive HVAC tune-up service including replacement of dirty air filter with new standard pleated filter. Conducted system inspection using multimeter to verify electrical components and operating parameters. All maintenance completed per manufacturer specifications to ensure optimal system performance and efficiency.
Performed comprehensive HVAC tune-up including combustion analysis with Testo 310 II analyzer. System demonstrated excellent efficiency with 95.9% EF and safe CO levels (7ppm). All readings within manufacturer specifications; equipment operating properly after service.
Conducted comprehensive diagnostic testing on HVAC system using electronic measurement tools. Opened furnace cabinet to inspect internal components including control board, motor assembly and drainage system. Performed electrical testing of system circuits with multimeter to verify proper operation of Honeywell control panel and associated wiring connections.
Conducted inspection and assessment of client's Bryant HVAC furnace system located in basement utility area. Identified and documented condensate collection system with visible moisture accumulation around the reservoir. Unit appears to be properly installed with standard ductwork connections and gas line configurations.
Performed furnace inspection and maintenance in utility room. Identified and replaced a worn mounting bracket on the gas valve assembly. System was tested and confirmed to be operating correctly after repair.
Completed installation of a new Lennox furnace system in basement utility room with proper PVC ventilation piping. Performed system pressure testing with digital manometer (model MA-12838A) to verify proper operation. Installed complete ductwork including flexible and rigid metal ducts for efficient air distribution throughout the building.
Completed routine HVAC tune-up service with inspection of ductwork. Identified significant rust and particulate buildup in ventilation system. Recommended duct cleaning service to address corrosion issues and improve airflow efficiency.
Performed comprehensive system tune-up, identifying concerning water damage on ceiling near unit. Diagnostic testing revealed elevated supply temperature of 104.2°F. Cleaned affected area, inspected ductwork for potential leaks, and adjusted system parameters to optimize performance and prevent future condensation issues.
Conducted evaluation of existing HVAC system in utility room, documenting condition of ductwork and water heating equipment. Assessed metal ductwork mounting and connections for potential replacement, noting current system configuration and spatial requirements for new installation.
Completed routine tune-up on Bryant furnace system located in basement. Inspected unit and found evidence of rust developing on heat exchanger surface. Performed standard maintenance including filter change, combustion analysis, and system operation verification.
Performed diagnostic inspection of furnace electrical system, identifying loose wiring connections at the control board. Reconnected and secured all wiring harnesses, with particular attention to the main power and thermostat connections. System tested after repair and confirmed proper operation with all safety circuits functioning correctly.
Completed preventative maintenance tune-up on 95.5% efficient furnace system. Conducted airflow measurements at supply registers (1115 CFM verified) and performed full electrical component inspection. System now operating within manufacturer specifications with all connections secure and performance optimized for the heating season.
Performed comprehensive tune-up on residential heating system, including inspection of internal electrical components and control board connections. Verified integrity of wiring connections (red, white, green, yellow) to ensure proper communication between thermostat and furnace controller. System operational with no immediate issues identified.
Diagnosed gas furnace with no heat issue. Inspection revealed an obstructed yellow condensate drain tube and accumulated debris in the internal components. Cleaned drainage system, removed debris from critical components, and verified proper operation of the blower motor and control board. System now functioning with normal heat output.
Performed comprehensive HVAC system tune-up including temperature differential testing between supply and return air. Measurements indicated proper system operation with a 53.2°F temperature split (126.0°F at supply side, 72.8°F at return), confirming efficient heat transfer and acceptable refrigerant charge levels.
Performed comprehensive tune-up on customer's furnace system, including inspection of internal components, wiring connections, gas valve assembly, and control board. All components were found to be in normal operating condition with no visible damage, leaks, or unusual buildup. System is functioning properly and has been returned to service.
Performed routine HVAC tune-up service including inspection of system components. Replaced dirty air filter with new 20x25x1 filter and verified proper airflow. Temperature readings with digital thermometer showed 64.0°F at supply vent, confirming system is operating within normal temperature parameters.