
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
Inspected furnace humidifier and found significant buildup on the evaporator pad/filter. Removed and replaced the contaminated mesh element, cleaned the housing assembly, and verified proper water flow to ensure optimal humidity control during heating season operation.
Conducted assessment of existing gas line infrastructure in unfinished basement area. Inspected horizontal pipe runs along ceiling joists and examined connection points to furnace unit. Evaluated potential installation pathway for new gas line, noting structural considerations around I-beam and existing utility configurations. Photos documented current plumbing layout and HVAC equipment positioning for proper gas line sizing and placement.
Performed scheduled maintenance on Daikin HVAC system. Inspected control board circuitry and wiring connections, confirming proper operation with no visible damage or loose connections. Examined blower wheel assembly and internal components, all found to be in normal working condition.
Conducted comprehensive assessment of existing HVAC system in basement utility room. Evaluated electrical panel capacity and wiring requirements for potential replacement unit. Documented current installation configuration including ductwork, PVC venting, and available utility connections to prepare accurate replacement estimate.
Completed comprehensive tune-up of HVAC system, inspecting both the condensate drainage assembly and furnace components. Verified proper installation and function of PVC condensate drain lines, confirming no blockages or leaks in the drainage system. Examined furnace gas valve assembly, electrical connections, and blower motor, ensuring all components were operating within specifications and showing no signs of wear or damage.
Performed comprehensive HVAC tune-up service including inspection of furnace blower assembly and motor components. Checked electrical connections and verified proper routing of condensate drainage system with PVC piping. System is functioning within manufacturer specifications with no immediate issues detected.
Diagnosed pressure switch malfunction in relatively new furnace causing no-heat condition. Inspected control board connections and blower assembly, finding loose wiring at pressure switch. Reconnected and secured all electrical connections, verified proper operation through complete heating cycle test.
Performed routine maintenance inspection on furnace unit. Accessed and examined internal components including burner assembly, gas manifold, and control module. All connections and wiring appear intact with no visible issues requiring immediate attention.
Installed new Lennox complete HVAC system in basement utility area, including furnace with proper PVC ventilation piping and insulated refrigerant lines. System was professionally mounted with all required electrical connections, and all components were tested to ensure proper functionality before completion.
Conducted combustion analysis on natural gas furnace using Testo 310 II analyzer, confirming proper operation with 89.3% efficiency, acceptable CO levels (6 ppm), and normal O₂ readings (9.6%). Performed visual inspection of internal components including blower assembly, control board, and condensate system; all wiring connections and components appear in normal working condition.
Conducted comprehensive inspection of electrical panel and HVAC system components. Identified aging breaker box with multiple circuit connections including dedicated A/C circuit. Examined mechanical area containing ductwork, PVC piping, and electrical wiring configuration. Documented current system layout to prepare for replacement unit installation.
Diagnosed failed flame sensor on 10+ year old furnace causing no-heat condition. Cleaned corrosion from sensor contacts and tested system through multiple heating cycles to confirm proper flame detection and ignition sequence. System now operating normally with strong, consistent flame pattern.
Performed comprehensive tune-up on residential HVAC system. Inspected furnace interior components including heat exchanger, electrical connections, and blower assembly - all found in satisfactory working condition. Serviced unit using standard maintenance tools and verified proper operation before closing access panel.
Performed scheduled preventive maintenance on residential HVAC system. Opened furnace access panel to inspect internal components including blower motor, electrical connections, and control boards. All components appeared to be in normal operating condition with no visible issues requiring immediate attention.
Performed routine maintenance tune-up on Daikin HVAC system. Inspected PVC exhaust/intake pipes and electrical connections, finding them in proper working order. Examined ductwork which showed normal dust accumulation but no significant blockage or damage requiring immediate attention.
Performed visual inspection of expansion tank on boiler system, noting proper installation but identifying water staining on concrete floor beneath unit. Checked system pressure gauge which showed normal operating range. No immediate remediation was required, but recommended monitoring for possible slow leak at tank or nearby copper pipe connections.
Performed comprehensive tune-up of residential HVAC system. Inspected electrical connections and wiring in control panel, noting some disorganization that was subsequently corrected. Examined blower motor assembly and internal components for proper operation, ensuring all wire connections were secure and properly terminated.
Performed routine maintenance on HVAC system, inspecting electrical components and connections. Noted water damage in corner of room affecting baseboard and drywall. Verified proper wiring connections within furnace unit and confirmed all systems functioning correctly after tune-up.
Performed comprehensive tune-up on customer's gas furnace system. Conducted full diagnostic inspection of internal components including control board, blower motor, and gas valve connections. Tested electrical parameters with digital multimeter to verify proper operation of all circuits and safety controls. Furnace was returned to service in good working condition with no operational issues detected.
Performed a comprehensive HVAC system tune-up, documenting temperature readings with digital thermometer (recorded 96.48°F). Identified and documented rust-colored staining on insulation material which may indicate moisture intrusion or condensation issues requiring further attention.