
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
Completed installation of new Lennox air conditioning condenser unit with matching evaporator coil system. Positioned outdoor condenser on rubber equipment pad with concrete foundation base, ensuring proper clearance from building structure for optimal airflow and serviceability. Ran refrigerant line set with black foam insulation from outdoor unit to indoor coil location, securing copper lines along exterior wall. Installed PVC condensate drain line routing from indoor coil to exterior discharge point. Verified all electrical connections, refrigerant charge levels, and system pressures meet manufacturer specifications. Tested complete system operation including compressor function, fan motor performance, and airflow delivery to confirm proper cooling cycle and temperature differential across coil.
Completed HVAC system replacement estimate for residential property. Evaluated existing Goodman furnace model EL296UH070XE36B and outdoor condensing unit, both showing signs of age and wear. Provided replacement options and specifications for new high-efficiency heating and cooling equipment.
Completed warranty inspection of basement HVAC system and electrical components. Documented exposed mechanical systems, ductwork, and electrical panel installation in unfinished basement area, confirming all components are properly mounted and accessible for future service needs.
# HVAC Install - A/C & Coil Completed installation of new outdoor air conditioning condenser unit and matching evaporator coil system. Unit was properly positioned on rubber isolation pad over concrete base with adequate clearance from structure and landscaping for optimal airflow and serviceability. All refrigerant lines were connected and system was charged to manufacturer specifications, as verified by manifold gauge readings showing proper operating pressures across multiple refrigerant scales. Electrical connections were completed per code requirements. System was tested for proper operation, with all safety controls and components functioning as designed. Installation site was left clean with unit secured and ready for service.
Completed system start-up and commissioning of newly installed HVAC equipment. Verified proper system operation using manifold gauge set to check refrigerant pressures and confirm system was within manufacturer specifications. Measured supply air temperature with digital thermometer, recording 84.9°F, and confirmed adequate temperature differential across the system. All equipment tested and operating as designed.
Responded to no heat call on unit less than 10 years old. Upon arrival, found furnace control board had tripped safety lockout due to failed ignition sequence. Reset system, verified ignitor glow and flame sensor operation, and confirmed unit restored to normal heating operation with proper temperature rise across heat exchanger.
# HVAC Pressure Switch Replacement Responded to service call for heating system malfunction. Upon inspection, diagnosed faulty pressure switch preventing furnace ignition sequence. Pressure switch failed to close circuit due to internal diaphragm failure, causing safety lockout condition. Removed defective pressure switch assembly from furnace cabinet, disconnected associated wiring terminals and pressure sensing hoses. Installed OEM replacement pressure switch, reconnected all electrical connections ensuring proper polarity, and reattached pressure hoses to appropriate ports with secure fittings. Verified all mounting hardware properly secured and clearances maintained per manufacturer specifications. Tested system operation through multiple heating cycles, confirmed proper pressure switch functionality and successful ignition sequence. System restored to normal operation with all safety controls functioning as designed.
Performed comprehensive inspection of commercial furnace system revealing significant deterioration and operational concerns. Documented extensive rust staining on interior panels and heat exchanger components, along with severe frost and ice accumulation on burner tubes indicating potential combustion issues or heat exchanger failure. The heavy frost buildup combined with underlying corrosion suggests compromised system integrity requiring immediate attention to prevent safety hazards and system failure.
# HVAC Furnace Service and Condensate Pump Inspection Responded to service call for furnace system inspection in basement mechanical room. Upon arrival, observed significant water staining and discoloration on concrete floor surrounding HVAC equipment, indicating historical moisture accumulation and drainage issues. Inspected furnace unit and associated condensate removal system. Examined white condensate pump installed at base of furnace, which appeared to be functioning but showed signs of previous drainage concerns based on floor staining patterns. Verified electrical connections to pump were secure and tested pump operation to ensure proper water removal from system. Checked condensate tubing routing and connections for proper installation and drainage flow. Assessed furnace unit for any water damage or corrosion, noting minor surface rust at base where unit contacts floor due to moisture exposure. Inspected manufacturer information plate and unit specifications. Verified all e
# HVAC Zone Control System Service Responded to service call for HVAC zone control system. Upon inspection, found zone control panel and associated thermostat mounted on main supply ductwork. Performed diagnostic evaluation of zone control board, damper actuator connections, and zone thermostat functionality. Verified proper voltage supply to control panel and tested communication between thermostat and zone board. Checked damper motor operation and confirmed zone damper movement throughout full range of motion. Cleaned control panel connections and tightened mounting hardware. System tested and verified operational with all zones responding correctly to thermostat calls.
# HVAC Service Call - No Heat Condition ## Equipment Information Furnace system, 10+ years old, high-efficiency condensing unit with electronic ignition control ## Problem Description Unit not producing heat. Homeowner reported complete loss of heating function. ## Diagnostic Findings Upon arrival, performed visual inspection and system diagnostics. Removed front access panel to examine internal components. Control board showed illuminated LED indicators suggesting power to the unit. Inspected blower motor assembly, inducer motor, and associated electrical connections. Examined condensate drainage system including pump assembly and discharge piping. All wire connections at motor terminals and control board appeared secure with no signs of burning or corrosion. ## Work Performed Tested control board functionality and verified proper voltage supply. Inspected pressure switches and associated tubing for blockages or disconnections. Examined flame sensor and ignition system components.
# HVAC Service Report - No Heat Call Responded to no heat call on furnace unit less than 10 years old. Upon arrival, conducted visual inspection of heating system components. Examined gas valve assembly and motor blower assembly for proper operation and signs of wear or malfunction. Gas valve showed normal wear consistent with age but displayed proper mechanical integrity. Checked all electrical connections including wiring to gas valve control circuit. Verified red control wire connections and examined copper gas supply lines for leaks or restrictions. All gas piping connections were secure with no detected leaks. Inspected blower motor assembly including electrical terminals and mechanical linkage components. Motor housing exhibited dust accumulation typical of normal operation. Verified all mounting hardware and brackets were properly secured. Checked motor capacitor and electrical connections for continuity and proper voltage supply. Tested thermostat call for heat and confirme
Responded to no heat call on HVAC system less than 10 years old. Upon inspection, found condensate pump had failed, causing safety switch to shut down heating system. Replaced malfunctioning condensate pump, tested drain line for proper flow, verified all electrical connections, and restored system to normal heating operation.
Responded to service call for toilet inspection in residential bathroom with wood-paneled alcove. Upon arrival, conducted thorough assessment of standard two-piece toilet unit, verified proper operation of flush mechanism, tank components, and bowl functionality. Confirmed toilet was in proper working condition with no leaks, clogs, or mechanical issues detected at time of inspection.
Performed comprehensive HVAC system maintenance and diagnostics on heating unit. Conducted flue gas analysis using Testo 310 combustion analyzer, confirming optimal performance with stack temperature of 84.2°F, oxygen level at 8.0%, carbon monoxide at 18 ppm, and combustion efficiency at 97.1%. Inspected internal electrical components and replaced defective fuse to restore proper system operation.
Completed installation of new air conditioning system and evaporator coil in residential property. The new HVAC equipment was installed in the basement utility area, with proper integration to existing ductwork and drainage systems, including PVC condensate lines routed through floor penetrations. All connections were secured, system was tested for proper operation, and unit is functioning within manufacturer specifications.
Performed routine furnace inspection and maintenance on residential HVAC unit. Accessed internal components including blower assembly, heat exchanger, electrical connections, and capacitor to verify proper operation and system integrity. Documented equipment condition with photographic records showing all major components including wiring harness, mounting hardware, and air handler assembly in satisfactory working order.
Completed HVAC system installation in residential basement utility area. Installed new beige cabinet furnace unit with dual white PVC intake and exhaust venting pipes routed vertically through ceiling structure. Configured sheet metal ductwork with angular transitions to integrate with existing air distribution system. Positioned white condensate pump adjacent to furnace on concrete floor for proper drainage management. Secured all metallic ductwork connections along ceiling joists with appropriate hangers and supports. Verified proper clearances from concrete block walls and ensured all venting, electrical connections, and drainage components meet manufacturer specifications and local code requirements. System tested and operational upon completion of installation warranty work.
Performed comprehensive tune-up and safety inspection on residential gas furnace system. Accessed internal components, verified proper electrical connections including control board and gas valve wiring harnesses, tested Honeywell gas valve operation, and confirmed all safety controls functioning correctly. System inspected, cleaned, and returned to normal operation with all access panels secured.