Top 24/7 HVAC Service In Hartford, WI | Upfront Pricing

HVAC & IAQ 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!

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

Responded to no-heat service call for furnace less than 10 years old. Upon inspection, determined burners were functioning properly with good blue flame pattern indicating appropriate gas combustion. Verified all electrical connections were secure and operational. No further issues identified; system now operating within normal parameters.
Responded to no-heat service call for furnace less than 10 years old. Upon inspection, determined burners were functioning properly with good blue flame pattern indicating appropriate gas combustion. Verified all electrical connections were secure and operational. No further issues identified; system now operating within normal parameters.
Nick K.
Nick K. Checked in
Responded to no-heat service call for furnace less than 10 years old. Upon inspection, determined burners were functioning properly with good blue flame pattern indicating appropriate gas combustion. Verified all electrical connections were secure and operational. No further issues identified; system now operating within normal parameters.
HARTFORD, WI 53027
Hartford, WI - Performed diagnostic assessment on aging HVAC system (10+ years old) with no heat complaint. Inspection revealed significant corrosion and rust on interior components, particularly the heat exchanger platform, and identified faulty electrical connections with worn wiring at the blower motor assembly. Cleaned critical components, restored proper electrical connections, and restored heating function.
Nicholas H.
Nicholas H. Checked in
Performed diagnostic assessment on aging HVAC system (10+ years old) with no heat complaint. Inspection revealed significant corrosion and rust on interior components, particularly the heat exchanger platform, and identified faulty electrical connections with worn wiring at the blower motor assembly. Cleaned critical components, restored proper electrical connections, and restored heating function.
Hartford, WI 53027
Responded to a no-heat call for an aging furnace (10+ years). Diagnostic inspection revealed flame sensing issues and worn ignition components evident in the control assembly. Replaced faulty flame sensor and cleaned ignition assembly to restore proper heat function. System now operating within normal parameters.
Responded to a no-heat call for an aging furnace (10+ years). Diagnostic inspection revealed flame sensing issues and worn ignition components evident in the control assembly. Replaced faulty flame sensor and cleaned ignition assembly to restore proper heat function. System now operating within normal parameters.
Nick K.
Nick K. Checked in
Responded to a no-heat call for an aging furnace (10+ years). Diagnostic inspection revealed flame sensing issues and worn ignition components evident in the control assembly. Replaced faulty flame sensor and cleaned ignition assembly to restore proper heat function. System now operating within normal parameters.
Hartford, WI 53027
Performed routine maintenance on Lennox HVAC system. Checked system temperature readings with UEi digital meter (85.0°F recorded), and inspected the Space-Gard Air Cleaner. All components functioning within normal parameters; no issues detected.
Performed routine maintenance on Lennox HVAC system. Checked system temperature readings with UEi digital meter (85.0°F recorded), and inspected the Space-Gard Air Cleaner. All components functioning within normal parameters; no issues detected.
Todd H.
Todd H. Checked in
Performed routine maintenance on Lennox HVAC system. Checked system temperature readings with UEi digital meter (85.0°F recorded), and inspected the Space-Gard Air Cleaner. All components functioning within normal parameters; no issues detected.
Hartford, WI 53027
Hartford, WI - Responded to no heat call on system less than 10 years old. Discovered improper PVC cellular core DWV pipe installed on condensate drain. Replaced with proper schedule 40 PVC pipe meeting manufacturer specifications. System now operating normally with appropriate condensate drainage.
Jacob A.
Jacob A. Checked in
Responded to no heat call on system less than 10 years old. Discovered improper PVC cellular core DWV pipe installed on condensate drain. Replaced with proper schedule 40 PVC pipe meeting manufacturer specifications. System now operating normally with appropriate condensate drainage.
Hartford, WI 53027
Performed routine tune-up inspection of the HVAC system, examining ductwork, plumbing connections, and air handler unit in the mechanical room. Inspected galvanized sheet metal ducts, PVC pipe connections, and copper piping for proper installation and functionality. All components were found to be in good working order with no visible damage or leaks detected.
Performed routine tune-up inspection of the HVAC system, examining ductwork, plumbing connections, and air handler unit in the mechanical room. Inspected galvanized sheet metal ducts, PVC pipe connections, and copper piping for proper installation and functionality. All components were found to be in good working order with no visible damage or leaks detected.
Nick K.
Nick K. Checked in
Performed routine tune-up inspection of the HVAC system, examining ductwork, plumbing connections, and air handler unit in the mechanical room. Inspected galvanized sheet metal ducts, PVC pipe connections, and copper piping for proper installation and functionality. All components were found to be in good working order with no visible damage or leaks detected.
Hartford, WI 53027
Performed comprehensive kitchen plumbing service addressing debris accumulation in left basin of double-sink system. Conducted thorough inspection and maintenance of existing carbon water filtration system, ensuring proper function of control panel and associated PVC piping connections. Both systems now operating at optimal performance levels.
Performed comprehensive kitchen plumbing service addressing debris accumulation in left basin of double-sink system. Conducted thorough inspection and maintenance of existing carbon water filtration system, ensuring proper function of control panel and associated PVC piping connections. Both systems now operating at optimal performance levels.
Kyle L.
Kyle L. Checked in
Performed comprehensive kitchen plumbing service addressing debris accumulation in left basin of double-sink system. Conducted thorough inspection and maintenance of existing carbon water filtration system, ensuring proper function of control panel and associated PVC piping connections. Both systems now operating at optimal performance levels.
Hartford, WI 53027
Performed comprehensive tune-up on the HVAC system, including inspection of internal components and wiring connections. Identified and cleaned water staining on floor beneath unit, likely from condensate drainage. All mechanical parts, fan assembly, and control boards were verified operational with no visible damage or irregularities.
Performed comprehensive tune-up on the HVAC system, including inspection of internal components and wiring connections. Identified and cleaned water staining on floor beneath unit, likely from condensate drainage. All mechanical parts, fan assembly, and control boards were verified operational with no visible damage or irregularities.
Nick K.
Nick K. Checked in
Performed comprehensive tune-up on the HVAC system, including inspection of internal components and wiring connections. Identified and cleaned water staining on floor beneath unit, likely from condensate drainage. All mechanical parts, fan assembly, and control boards were verified operational with no visible damage or irregularities.
Hartford, WI 53027
Hartford, WI - Performed comprehensive tune-up on residential furnace system located in basement. Inspected electrical connections, tested thermostat functionality, and examined heat exchanger for cracks or deterioration. Cleaned primary components, verified proper operation of blower motor, and confirmed adequate gas pressure and combustion. System is now operating within manufacturer specifications.
Jacob A.
Jacob A. Checked in
Performed comprehensive tune-up on residential furnace system located in basement. Inspected electrical connections, tested thermostat functionality, and examined heat exchanger for cracks or deterioration. Cleaned primary components, verified proper operation of blower motor, and confirmed adequate gas pressure and combustion. System is now operating within manufacturer specifications.
Hartford, WI 53027
Responded to install callback to investigate control system issue. Accessed HVAC unit and verified electronic control board is receiving power as evidenced by illuminated green LED indicator lights. All internal wiring connections were inspected and confirmed to be properly secured and functioning normally. System is now operating to manufacturer specifications.
Responded to install callback to investigate control system issue. Accessed HVAC unit and verified electronic control board is receiving power as evidenced by illuminated green LED indicator lights. All internal wiring connections were inspected and confirmed to be properly secured and functioning normally. System is now operating to manufacturer specifications.
Todd H.
Todd H. Checked in
Responded to install callback to investigate control system issue. Accessed HVAC unit and verified electronic control board is receiving power as evidenced by illuminated green LED indicator lights. All internal wiring connections were inspected and confirmed to be properly secured and functioning normally. System is now operating to manufacturer specifications.
Hartford, WI 53027
Diagnosed no-heat complaint on aging system using Fieldpiece manometer, which confirmed low pressure readings of 35.1 across inducer assembly. Inspected blower compartment and found significant dust accumulation on fan motor assembly affecting airflow. Cleaned blower wheel, verified proper operation of safety switches, and restored heat function to manufacturer specifications.
Diagnosed no-heat complaint on aging system using Fieldpiece manometer, which confirmed low pressure readings of 35.1 across inducer assembly. Inspected blower compartment and found significant dust accumulation on fan motor assembly affecting airflow. Cleaned blower wheel, verified proper operation of safety switches, and restored heat function to manufacturer specifications.
Nick K.
Nick K. Checked in
Diagnosed no-heat complaint on aging system using Fieldpiece manometer, which confirmed low pressure readings of 35.1 across inducer assembly. Inspected blower compartment and found significant dust accumulation on fan motor assembly affecting airflow. Cleaned blower wheel, verified proper operation of safety switches, and restored heat function to manufacturer specifications.
Hartford, WI 53027
Completed plumbing repair in crawlspace/basement area involving inspection and potential replacement of PVC and copper pipe components. Service included maintenance of connections at valve junction points where the supply system interfaces with drainage components within the structural framework.
Completed plumbing repair in crawlspace/basement area involving inspection and potential replacement of PVC and copper pipe components. Service included maintenance of connections at valve junction points where the supply system interfaces with drainage components within the structural framework.
Kyle L.
Kyle L. Checked in
Completed plumbing repair in crawlspace/basement area involving inspection and potential replacement of PVC and copper pipe components. Service included maintenance of connections at valve junction points where the supply system interfaces with drainage components within the structural framework.
Hartford, WI 53027
Performed comprehensive tune-up on residential furnace system including inspection of internal components, electrical connections, and control board. Removed front panel to access and clean interior machinery, verified proper wiring configuration, and ensured adequate insulation around adjacent ductwork. System was tested and confirmed to be operating within manufacturer specifications.
Performed comprehensive tune-up on residential furnace system including inspection of internal components, electrical connections, and control board. Removed front panel to access and clean interior machinery, verified proper wiring configuration, and ensured adequate insulation around adjacent ductwork. System was tested and confirmed to be operating within manufacturer specifications.
Nicholas H.
Nicholas H. Checked in
Performed comprehensive tune-up on residential furnace system including inspection of internal components, electrical connections, and control board. Removed front panel to access and clean interior machinery, verified proper wiring configuration, and ensured adequate insulation around adjacent ductwork. System was tested and confirmed to be operating within manufacturer specifications.
Hartford, WI 53027
Performed routine maintenance tune-up on Goodman furnace system. Conducted thorough inspection of internal components including motor assembly, wiring connections, and control board - all components found in normal working condition. Examined installation integrity of PVC venting system and checked ductwork throughout utility area, confirming proper airflow and ventilation.
Performed routine maintenance tune-up on Goodman furnace system. Conducted thorough inspection of internal components including motor assembly, wiring connections, and control board - all components found in normal working condition. Examined installation integrity of PVC venting system and checked ductwork throughout utility area, confirming proper airflow and ventilation.
Nick K.
Nick K. Checked in
Performed routine maintenance tune-up on Goodman furnace system. Conducted thorough inspection of internal components including motor assembly, wiring connections, and control board - all components found in normal working condition. Examined installation integrity of PVC venting system and checked ductwork throughout utility area, confirming proper airflow and ventilation.
Hartford, WI 53027
Successfully installed a new Lennox furnace in the utility room, replacing the previous unit. Completed installation of PVC exhaust venting system with appropriate elbow joints for proper ventilation. System was tested and confirmed to be functioning according to manufacturer specifications.
Successfully installed a new Lennox furnace in the utility room, replacing the previous unit. Completed installation of PVC exhaust venting system with appropriate elbow joints for proper ventilation. System was tested and confirmed to be functioning according to manufacturer specifications.
Benjamin G.
Benjamin G. Checked in
Successfully installed a new Lennox furnace in the utility room, replacing the previous unit. Completed installation of PVC exhaust venting system with appropriate elbow joints for proper ventilation. System was tested and confirmed to be functioning according to manufacturer specifications.
HARTFORD, WI 53027
Hartford, WI - Performed routine inspection and maintenance service on Bryant residential furnace. Examined ventilation infrastructure including PVC pipes and metal ductwork connections, confirming proper installation and system functionality. Unit appears to be operating normally with no immediate concerns identified.
Nicholas H.
Nicholas H. Checked in
Performed routine inspection and maintenance service on Bryant residential furnace. Examined ventilation infrastructure including PVC pipes and metal ductwork connections, confirming proper installation and system functionality. Unit appears to be operating normally with no immediate concerns identified.
Hartford, WI 53027
Performed assessment of existing HVAC system and proposed replacement of outdated Lennox furnace unit. Current installation includes standard sheet metal ductwork with diamond-shaped transition piece and PVC ventilation pipes. Recommended new high-efficiency system with proper connections to existing utility infrastructure in basement mechanical area.
Performed assessment of existing HVAC system and proposed replacement of outdated Lennox furnace unit. Current installation includes standard sheet metal ductwork with diamond-shaped transition piece and PVC ventilation pipes. Recommended new high-efficiency system with proper connections to existing utility infrastructure in basement mechanical area.
Jason G.
Jason G. Checked in
Performed assessment of existing HVAC system and proposed replacement of outdated Lennox furnace unit. Current installation includes standard sheet metal ductwork with diamond-shaped transition piece and PVC ventilation pipes. Recommended new high-efficiency system with proper connections to existing utility infrastructure in basement mechanical area.
Hartford, WI 53027
Completed Honeywell Home furnace installation with proper pressure testing using Klein Tools ET100 digital pressure meter (confirmed reading of 1.78). Installation included proper connection of blower motor assembly, electrical wiring, and PVC ventilation system. Final diagnostic checks confirmed all systems functioning within manufacturer specifications.
Completed Honeywell Home furnace installation with proper pressure testing using Klein Tools ET100 digital pressure meter (confirmed reading of 1.78). Installation included proper connection of blower motor assembly, electrical wiring, and PVC ventilation system. Final diagnostic checks confirmed all systems functioning within manufacturer specifications.
Hayden L.
Hayden L. Checked in
Completed Honeywell Home furnace installation with proper pressure testing using Klein Tools ET100 digital pressure meter (confirmed reading of 1.78). Installation included proper connection of blower motor assembly, electrical wiring, and PVC ventilation system. Final diagnostic checks confirmed all systems functioning within manufacturer specifications.
Hartford, WI 53027
Hartford, WI - Performed routine HVAC tune-up service. Inspected exposed PVC drain lines and copper refrigerant lines in basement mechanical area, confirming proper installation and support. Verified all shut-off valves were functional with no signs of leakage at connections or mounting points.
Nicholas H.
Nicholas H. Checked in
Performed routine HVAC tune-up service. Inspected exposed PVC drain lines and copper refrigerant lines in basement mechanical area, confirming proper installation and support. Verified all shut-off valves were functional with no signs of leakage at connections or mounting points.
Hartford, WI 53027
Performed comprehensive furnace tune-up which included removing access panel for full component inspection. Conducted electrical testing with clamp meter to verify proper voltage and amperage readings on control board and wiring connections. Measured gas pressure using digital manometer, confirming readings of 3.50/3.45 inWC, which are within manufacturer specifications for this unit. All diagnostic tests indicate system is operating correctly with no issues detected.
Performed comprehensive furnace tune-up which included removing access panel for full component inspection. Conducted electrical testing with clamp meter to verify proper voltage and amperage readings on control board and wiring connections. Measured gas pressure using digital manometer, confirming readings of 3.50/3.45 inWC, which are within manufacturer specifications for this unit. All diagnostic tests indicate system is operating correctly with no issues detected.
Nick K.
Nick K. Checked in
Performed comprehensive furnace tune-up which included removing access panel for full component inspection. Conducted electrical testing with clamp meter to verify proper voltage and amperage readings on control board and wiring connections. Measured gas pressure using digital manometer, confirming readings of 3.50/3.45 inWC, which are within manufacturer specifications for this unit. All diagnostic tests indicate system is operating correctly with no issues detected.
Hartford, WI 53027
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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.