HVAC, IAQ, & PLumbing Services in Hartford, WI

Reliable HVAC services are necessary to combat the extreme weather conditions for which Hartford, WI, is known. The Thielmann Group is here to meet those needs, ensuring your comfort and safety year-round. We understand the importance of a well-functioning HVAC system and clean indoor air quality, so we offer comprehensive solutions designed to keep your home comfortable and healthy.

Our team of highly skilled and NATE-certified technicians is here when you need us the most, offering 24/7 emergency HVAC services to tend to all your urgent repair requests. Are you worried about the cost of replacing your HVAC system? We provide free estimates to help you plan your budget accordingly.

Don’t wait until your HVAC system breaks down. Contact us today at (262) 299-6197 to request our professional HVAC services and experience the difference firsthand! 

HVAC technician performing a service on an outdoor AC unit

Same-Day Heating Services

The Thielmann Group takes pride in offering same-day heating solutions to families throughout Hartford, WI. Our team has experience repairing and maintaining all types of heating equipment, including:

  • Boilers: Whether your boiler needs repair, maintenance, or replacement, our experts can handle it all.
  • Gas furnaces: Keep your home warm with our gas furnace installation, repair, and maintenance services.
  • Oil furnaces: We provide comprehensive solutions for oil furnace systems to ensure your home stays cozy during the coldest months.
  • Heat pumps: Our skilled technicians are well-versed in installation, repair, and maintenance to keep your indoor climate just right.

Reliable Cooling Services

Stay cool during the sweltering summer months with The Thielmann Group’s reliable air conditioning solutions. Our services proudly include installation, replacement, repair, and maintenance for various cooling systems, including:

  • Central air conditioning: We ensure your central AC system runs efficiently to keep your home comfortable.
  • Ductless mini-splits: We offer ductless mini-split installation and maintenance services for homes without ductwork.
  • Packaged units: Our experts are equipped to handle packaged unit systems for both residential and commercial properties.

Trust us to keep your home cool and comfortable throughout the summer season. Call (262) 299-6197 today to schedule AC services in Hartford, WI

Signs You Need HVAC Services in Hartford

Is your HVAC system in need of urgent attention? Here are some signs to watch out for:

  • Inconsistent temperatures: Uneven heating or cooling throughout your home.
  • Increased energy bills: A sudden spike in energy costs can indicate HVAC system inefficiency.
  • Strange noises: Unusual sounds from your HVAC system may indicate a problem.
  • Poor air quality: Dusty or polluted air can lead to health issues for you and your family.

If you notice any of these signs, don’t hesitate to contact The Thielmann Group at (262) 299-6197 for prompt and professional HVAC services

Top-Rated Air Quality Services

Indoor air quality is crucial for a healthy and comfortable living environment. The Thielmann Group offers several indoor air quality solutions to address your specific needs, including:

  • Air purifiers: Improve air quality by removing allergens, dust, and pollutants.
  • Humidifiers: Maintain optimal humidity levels for better comfort and health.
  • Dehumidifiers: Prevent excess moisture and mold growth in your home.
  • Duct cleaning: Remove contaminants from your ductwork for cleaner air.

Breathe easier with our top-rated indoor air quality services. Request IAQ services for your home by calling us at (262) 299-6197 today!

Professional Plumbing Services in Hartford, WI

Your home’s plumbing system is one of the most important, yet often forgotten, systems in your house. When plumbing problems arise, they can turn from inconvenient to down right dirty in seconds. Having a reliable team of Hartford plumbers on your speed dial can make all the difference. Thielmann Heating, Cooling, and Plumbing has been serving homeowners since 1929. This means we understand what your home needs and treat each problem with professional, quality workmanship. 

Our trained, certified team of plumbers in Hartford are able to handle everything from new fixture installations to major pipe repairs, and everything in between. For Hartford, WI homeowners needing fast, reliable plumbing services, Thielmann offers:

  • Water Heater repair and replacement that ensure you always have hot water
  • Drain cleaning to clear buildup and remove clogs
  • Kitchen faucet, sink, and garbage disposal installation and service
  • Bathroom fixtures and toilet repair and installation
  • Minimally invasive pipe repair and replacement to improve water pressure
  • Sump pump services to ensure a dry, safe basement. 

Water Conditioning in Hartford, WI

For residents in Hartford, WI, hard water can damage your home’s plumbing system and shorten the life of your appliances. That’s why Thielmann Heating, Cooling, and Plumbing offers complete water conditioning services designed to help you protect your home. Our team will test your home’s water to help you make the best decision and find the right solution. After all, the cleaner your water, the better you feel when bathing, cleaning, and cooking.

Why Choose The Thielmann Group in Hartford?

The Thielmann Group is proud to be the trusted choice for reliable HVAC and indoor air quality solutions throughout Hartford and the surrounding area. When you choose our team, you can always count on us for:

Don’t compromise on comfort and safety in your home. Choose The Thielmann Group and experience superior service that ensures your home remains a haven of comfort and health.

Call (262) 299-6197 to schedule HVAC or IAQ services in Hartford today!

Read Reviews by Our Customers

Recent Jobs and Reviews in Hartford, WI

Job Locations and Reviews

Conducted inspection of basement HVAC system including Honeywell electronic air cleaner. Evaluated floor drain setup with connected blue discharge line and examined existing ductwork and PVC/copper piping configuration. Documented current system condition and provided replacement estimate for complete HVAC system upgrade.
Conducted inspection of basement HVAC system including Honeywell electronic air cleaner. Evaluated floor drain setup with connected blue discharge line and examined existing ductwork and PVC/copper piping configuration. Documented current system condition and provided replacement estimate for complete HVAC system upgrade.
Steven S.
Steven S. Checked in
Conducted inspection of basement HVAC system including Honeywell electronic air cleaner. Evaluated floor drain setup with connected blue discharge line and examined existing ductwork and PVC/copper piping configuration. Documented current system condition and provided replacement estimate for complete HVAC system upgrade.
Hartford, WI 53027
Performed routine maintenance on Lennox EL296UH070XE36B-02 furnace system. Inspected PVC venting configuration and connections for proper sealing. Checked electrical wiring and plumbing components, confirming all connections are secure and functioning correctly.
Performed routine maintenance on Lennox EL296UH070XE36B-02 furnace system. Inspected PVC venting configuration and connections for proper sealing. Checked electrical wiring and plumbing components, confirming all connections are secure and functioning correctly.
Nick K.
Nick K. Checked in
Performed routine maintenance on Lennox EL296UH070XE36B-02 furnace system. Inspected PVC venting configuration and connections for proper sealing. Checked electrical wiring and plumbing components, confirming all connections are secure and functioning correctly.
Hartford, WI 53027
Inspected Bryant furnace unit installed in basement utility area. Unit appears functional with proper ductwork connections and PVC venting. Surrounding area contains numerous stored items that could potentially restrict airflow and access. Recommended replacement due to age and efficiency concerns, with proper clearance of storage items around new installation.
Inspected Bryant furnace unit installed in basement utility area. Unit appears functional with proper ductwork connections and PVC venting. Surrounding area contains numerous stored items that could potentially restrict airflow and access. Recommended replacement due to age and efficiency concerns, with proper clearance of storage items around new installation.
Bryan P.
Bryan P. Checked in
Inspected Bryant furnace unit installed in basement utility area. Unit appears functional with proper ductwork connections and PVC venting. Surrounding area contains numerous stored items that could potentially restrict airflow and access. Recommended replacement due to age and efficiency concerns, with proper clearance of storage items around new installation.
Hartford, WI 53027
Hartford, WI - Inspected under-sink plumbing assembly including PVC P-trap, drain connections, and braided supply lines. Verified all components were properly installed and functioning correctly with no visible leaks or damage. Confirmed all coupling nuts and fittings were secure and properly seated.
Dan E.
Dan E. Checked in
Inspected under-sink plumbing assembly including PVC P-trap, drain connections, and braided supply lines. Verified all components were properly installed and functioning correctly with no visible leaks or damage. Confirmed all coupling nuts and fittings were secure and properly seated.
Hartford, WI 53027
Performed comprehensive HVAC tune-up including inspection of ductwork and plumbing connections in utility space. Verified proper leveling of equipment using calibrated spirit level to ensure optimal system operation and efficiency.
Performed comprehensive HVAC tune-up including inspection of ductwork and plumbing connections in utility space. Verified proper leveling of equipment using calibrated spirit level to ensure optimal system operation and efficiency.
Nick K.
Nick K. Checked in
Performed comprehensive HVAC tune-up including inspection of ductwork and plumbing connections in utility space. Verified proper leveling of equipment using calibrated spirit level to ensure optimal system operation and efficiency.
Hartford, WI 53027
Hartford, WI - Performed comprehensive preventive maintenance on customer's HVAC furnace system. Inspected internal components including circuit boards and wiring harnesses, and verified proper operation of all mechanical parts. System is functioning within normal parameters after service.
Nicholas H.
Nicholas H. Checked in
Performed comprehensive preventive maintenance on customer's HVAC furnace system. Inspected internal components including circuit boards and wiring harnesses, and verified proper operation of all mechanical parts. System is functioning within normal parameters after service.
Hartford, WI 53027
Performed a routine tune-up on the HVAC system and discovered significant CO readings (7313 ppm) during combustion analysis with the Testo 310 II. Identified water accumulation at the unit base indicating possible condensate drainage issue. System efficiency measured at 80.6% with high excess air (446.9%) and low CO₂ (1.77%), suggesting combustion problems requiring immediate attention to ensure safe operation.
Performed a routine tune-up on the HVAC system and discovered significant CO readings (7313 ppm) during combustion analysis with the Testo 310 II. Identified water accumulation at the unit base indicating possible condensate drainage issue. System efficiency measured at 80.6% with high excess air (446.9%) and low CO₂ (1.77%), suggesting combustion problems requiring immediate attention to ensure safe operation.
Donovan S.
Donovan S. Checked in
Performed a routine tune-up on the HVAC system and discovered significant CO readings (7313 ppm) during combustion analysis with the Testo 310 II. Identified water accumulation at the unit base indicating possible condensate drainage issue. System efficiency measured at 80.6% with high excess air (446.9%) and low CO₂ (1.77%), suggesting combustion problems requiring immediate attention to ensure safe operation.
Hartford, WI 53027
Completed installation of a new residential HVAC system including a beige furnace unit with associated copper lines, electrical connections, and control components in the utility area. System installation included proper connection to existing PVC drainage/ventilation pipes mounted along wooden joists, with all required plumbing and electrical work completed to ensure optimal system function.
Completed installation of a new residential HVAC system including a beige furnace unit with associated copper lines, electrical connections, and control components in the utility area. System installation included proper connection to existing PVC drainage/ventilation pipes mounted along wooden joists, with all required plumbing and electrical work completed to ensure optimal system function.
Bryan P.
Bryan P. Checked in
Completed installation of a new residential HVAC system including a beige furnace unit with associated copper lines, electrical connections, and control components in the utility area. System installation included proper connection to existing PVC drainage/ventilation pipes mounted along wooden joists, with all required plumbing and electrical work completed to ensure optimal system function.
Hartford, WI 53027
Hartford, WI - Responded to service call to inspect plumbing connection at utility fixture. Visual inspection revealed proper installation of PVC to copper pipe transition with no signs of leakage or deterioration. Connection appears to be functioning normally with no remedial action required.
Nick K.
Nick K. Checked in
Responded to service call to inspect plumbing connection at utility fixture. Visual inspection revealed proper installation of PVC to copper pipe transition with no signs of leakage or deterioration. Connection appears to be functioning normally with no remedial action required.
Hartford, WI 53027
Performed comprehensive furnace tune-up including inspection of internal components (blower assembly, motor, circuit board, electrical connections) and ventilation system. Examined ductwork and PVC exhaust piping for proper installation and function. All systems operating within normal parameters with no issues detected.
Performed comprehensive furnace tune-up including inspection of internal components (blower assembly, motor, circuit board, electrical connections) and ventilation system. Examined ductwork and PVC exhaust piping for proper installation and function. All systems operating within normal parameters with no issues detected.
Donovan S.
Donovan S. Checked in
Performed comprehensive furnace tune-up including inspection of internal components (blower assembly, motor, circuit board, electrical connections) and ventilation system. Examined ductwork and PVC exhaust piping for proper installation and function. All systems operating within normal parameters with no issues detected.
Hartford, WI 53027
Performed comprehensive tune-up on Lennox furnace system. Inspected and cleaned all components, checked PVC intake/exhaust venting for proper installation and airflow. Verified connections and operation of ductwork and associated plumbing components. System is functioning within manufacturer specifications with no issues detected.
Performed comprehensive tune-up on Lennox furnace system. Inspected and cleaned all components, checked PVC intake/exhaust venting for proper installation and airflow. Verified connections and operation of ductwork and associated plumbing components. System is functioning within manufacturer specifications with no issues detected.
Donovan S.
Donovan S. Checked in
Performed comprehensive tune-up on Lennox furnace system. Inspected and cleaned all components, checked PVC intake/exhaust venting for proper installation and airflow. Verified connections and operation of ductwork and associated plumbing components. System is functioning within manufacturer specifications with no issues detected.
Hartford, WI 53027
Conducted comprehensive HVAC system tune-up focusing on plumbing infrastructure and system leveling. Inspected PVC pipe network for proper drainage connections and verified equipment level positioning using precision measurement tools. System was confirmed operational with all components properly aligned and secured.
Conducted comprehensive HVAC system tune-up focusing on plumbing infrastructure and system leveling. Inspected PVC pipe network for proper drainage connections and verified equipment level positioning using precision measurement tools. System was confirmed operational with all components properly aligned and secured.
Nick K.
Nick K. Checked in
Conducted comprehensive HVAC system tune-up focusing on plumbing infrastructure and system leveling. Inspected PVC pipe network for proper drainage connections and verified equipment level positioning using precision measurement tools. System was confirmed operational with all components properly aligned and secured.
Hartford, WI 53027
Responded to no-heat call for Ruud furnace system installed in basement. Visual inspection revealed condensate drainage issue in the PVC pipe assembly connected to the furnace. Cleared blockage in condensate line and verified proper drainage. System tested through complete heating cycle with proper operation restored.
Responded to no-heat call for Ruud furnace system installed in basement. Visual inspection revealed condensate drainage issue in the PVC pipe assembly connected to the furnace. Cleared blockage in condensate line and verified proper drainage. System tested through complete heating cycle with proper operation restored.
Nick K.
Nick K. Checked in
Responded to no-heat call for Ruud furnace system installed in basement. Visual inspection revealed condensate drainage issue in the PVC pipe assembly connected to the furnace. Cleared blockage in condensate line and verified proper drainage. System tested through complete heating cycle with proper operation restored.
Hartford, WI 53027
Performed routine preventative maintenance on residential furnace system. Inspected refrigerant lines, checked all electrical connections, and examined internal components with access panel open. System is operating within normal parameters with no immediate concerns identified.
Performed routine preventative maintenance on residential furnace system. Inspected refrigerant lines, checked all electrical connections, and examined internal components with access panel open. System is operating within normal parameters with no immediate concerns identified.
Nicholas H.
Nicholas H. Checked in
Performed routine preventative maintenance on residential furnace system. Inspected refrigerant lines, checked all electrical connections, and examined internal components with access panel open. System is operating within normal parameters with no immediate concerns identified.
Hartford, WI 53027
HARTFORD, WI - Inspected tanked water heater system and identified significant corrosion at connection point. Observed rust development on metal components and deterioration around hex bolt/fastener with compromised sealant. Replaced corroded fitting and applied new sealant to prevent future moisture intrusion and extend system lifespan.
Kyle L.
Kyle L. Checked in
Inspected tanked water heater system and identified significant corrosion at connection point. Observed rust development on metal components and deterioration around hex bolt/fastener with compromised sealant. Replaced corroded fitting and applied new sealant to prevent future moisture intrusion and extend system lifespan.
HARTFORD, WI 53027
Responded to service call for water leak. Inspected and diagnosed condensation issue at PVC pipe junction where black PVC connects to white PVC piping. Installed new sealing material at the connection point and verified proper operation of the red water pump system with associated drainage components.
Responded to service call for water leak. Inspected and diagnosed condensation issue at PVC pipe junction where black PVC connects to white PVC piping. Installed new sealing material at the connection point and verified proper operation of the red water pump system with associated drainage components.
Kyle L.
Kyle L. Checked in
Responded to service call for water leak. Inspected and diagnosed condensation issue at PVC pipe junction where black PVC connects to white PVC piping. Installed new sealing material at the connection point and verified proper operation of the red water pump system with associated drainage components.
Hartford, WI 53027
Performed comprehensive HVAC tune-up service including inspection of interior furnace components, verification of proper wiring connections to control board, and examination of heat exchanger integrity. System was leveled using spirit level to ensure optimal operation and proper condensate drainage.
Performed comprehensive HVAC tune-up service including inspection of interior furnace components, verification of proper wiring connections to control board, and examination of heat exchanger integrity. System was leveled using spirit level to ensure optimal operation and proper condensate drainage.
Nick K.
Nick K. Checked in
Performed comprehensive HVAC tune-up service including inspection of interior furnace components, verification of proper wiring connections to control board, and examination of heat exchanger integrity. System was leveled using spirit level to ensure optimal operation and proper condensate drainage.
Hartford, WI 53027
Performed comprehensive HVAC tune-up service including leveling of equipment housing and inspection of internal blower assembly. Verified proper wire connections to control board (red, green, yellow, white) and examined motor condition. System was returned to level operation with all components functioning within normal parameters.
Performed comprehensive HVAC tune-up service including leveling of equipment housing and inspection of internal blower assembly. Verified proper wire connections to control board (red, green, yellow, white) and examined motor condition. System was returned to level operation with all components functioning within normal parameters.
Nick K.
Nick K. Checked in
Performed comprehensive HVAC tune-up service including leveling of equipment housing and inspection of internal blower assembly. Verified proper wire connections to control board (red, green, yellow, white) and examined motor condition. System was returned to level operation with all components functioning within normal parameters.
Hartford, WI 53027
Hartford, WI - Performed scheduled maintenance on furnace system including electrical component inspection and diagnostic testing using multimeter. Accessed and examined internal wiring and control components, ensuring proper electrical connections and function. Utilized portable work light for thorough visual inspection of all internal components.
Nicholas H.
Nicholas H. Checked in
Performed scheduled maintenance on furnace system including electrical component inspection and diagnostic testing using multimeter. Accessed and examined internal wiring and control components, ensuring proper electrical connections and function. Utilized portable work light for thorough visual inspection of all internal components.
Hartford, WI 53027
Conducted comprehensive assessment of existing water heating system in basement utility area. Inspected 40-gallon gas water heater showing signs of age and potential efficiency issues. Evaluated current water treatment system including softener and brine tank for compatibility with recommended replacement options. Documented complete plumbing configuration including ventilation and connection points to ensure proper specification for replacement equipment.
Conducted comprehensive assessment of existing water heating system in basement utility area. Inspected 40-gallon gas water heater showing signs of age and potential efficiency issues. Evaluated current water treatment system including softener and brine tank for compatibility with recommended replacement options. Documented complete plumbing configuration including ventilation and connection points to ensure proper specification for replacement equipment.
Jason G.
Jason G. Checked in
Conducted comprehensive assessment of existing water heating system in basement utility area. Inspected 40-gallon gas water heater showing signs of age and potential efficiency issues. Evaluated current water treatment system including softener and brine tank for compatibility with recommended replacement options. Documented complete plumbing configuration including ventilation and connection points to ensure proper specification for replacement equipment.
hartford, WI 53027

What To Expect

Discover the Thielmann Heating, Cooling & Plumbing Difference

Fully Licensed & Insured

Our experts have the expertise and training to deliver the highest quality services every time.

Trusted Since 1929

We have served Southeastern Wisconsin for nearly a century, so we understand the needs of our community.

Financing Available

We offer various options from financing partners to help you meet your specific needs and budget.

5-Star Customer Service

Thielmann Heating, Cooling & Plumbing promises five-star customer service with every interaction.

Committed to Excellence

We complete jobs quickly without compromising our commitment to excellence.

Satisfaction Guarantee

Our team is dedicated to ensuring your 100% satisfaction with every service we perform.

Fully Licensed & Insured

Our experts have the expertise and training to deliver the highest quality services every time.

Trusted Since 1929

We have served Southeastern Wisconsin for nearly a century, so we understand the needs of our community.

Financing Available

We offer various options from financing partners to help you meet your specific needs and budget.

5-Star Customer Service

Thielmann Heating, Cooling & Plumbing promises five-star customer service with every interaction.

Committed to Excellence

We complete jobs quickly without compromising our commitment to excellence.

Satisfaction Guarantee

Our team is dedicated to ensuring your 100% satisfaction with every service we perform.

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Our Reviews

See What Your Neighbors Are Saying

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…

De'Angelo T.

De'Angelo T.

Excellent team from start to finish. They were all very respectful of our property, as they promptly and professionally went about their task of installing a new air conditioner system. The system works very well, so far. It is also much quieter than the previous 40+…

Jerry W.

Jerry W.

Thielmann did a tremendous job replacing our Carrier furnace. They worked with us to make sure we were able to get the right product and even worked with Carrier on the issues we were seeing on our old furnace as it was failing sooner than it…

J. K.

J. K.

I've been using Thielmann Group for all my heating and air conditioning since I built my house 23 years ago. They have been great in emergency service and regular maintenance service. On time and very friendly staff. Would, and have, recommend them to anyone!

Paul K.

Paul K.

I have used Thielmann for both installation of a new furnace + A/C recently, but also an install of a ductless mini-split unit six years ago. I fully trust their brands and recommendations. I can't say enough of about this company. Every single person from administrative…

Christin C.

Christin C.