Don-Martin Heating, Cooling & Geothermal: Janesville, WI's Trusted HVAC Experts

For over 15 years, Don-Martin Heating, Cooling & Geothermal has been the go-to HVAC contractor for Janesville, WI, and the surrounding communities. This family-owned and operated business brings more than 45 years of combined experience to every job, focusing on keeping homes and businesses comfortable through all of southern Wisconsin's seasons. From bitter winters to humid summers, they understand the local climate and how it affects your heating and cooling systems.

Business Overview

Don-Martin Heating, Cooling & Geothermal is a licensed and insured contractor established in 1999. They serve both residential and light commercial clients. While they operate during standard business hours, they understand that HVAC emergencies don't always wait, and they work to address urgent needs promptly. Their team of skilled technicians is dedicated to providing reliable service for everything from routine maintenance to full system replacements.

Key Services for Homeowners and Businesses

The company provides a full range of heating and cooling solutions tailored to the needs of the area. Their main services include:

  • HVAC Installation or Replacement: Whether you're upgrading an old furnace in a historic Janesville home or installing a new system in a commercial building, they handle it.
  • HVAC System Repair: Fast and effective repairs to get your heat or air conditioning back on when you need it most.
  • HVAC System Maintenance: Regular check-ups and tune-ups to improve efficiency, prevent breakdowns, and extend the life of your equipment.
  • Specialized Geothermal Systems: A standout offering, they design and install high-efficiency geothermal heating and cooling systems that use the earth's stable temperature.

Areas Served in Southern Wisconsin

Don-Martin Heating, Cooling & Geothermal proudly serves a wide area around Janesville. Their service area includes Madison, Beloit, Milton, Edgerton, Evansville, and many more towns across Rock County and beyond. They have a deep working knowledge of the local housing styles, from older farmhouses to new subdivisions, and the specific heating and cooling challenges each can present. When you call Don-Martin Heating, Cooling & Geothermal in Janesville, WI, you're getting a team that knows this region.

Company History and Growth

The business was founded in the spring of 2002 when the owner committed to running his own quality-focused operation. Starting as a small shop, it has grown steadily over the years by building a reputation for honest work and expertise. The company's motto, "We're not comfortable till you are!" reflects their customer-first approach that has been central to their story for over 15 years.

Leadership and Deep Local Roots

The owner began his HVAC career in the summer of 1979, working for a Lennox dealer in Burlington during the oil embargo era. He moved to Evansville in 1984 and spent years working in the Madison area on everything from new construction and commercial sheet metal to residential and boiler systems. This extensive background, spanning over four decades, means he has seen and worked on virtually every type of system found in southern Wisconsin homes and buildings. His commitment to staying in the local community and running a hands-on business is a core part of their identity.

Specialties & Highlights

  • Geothermal Expertise: They are specialists in designing and installing geothermal systems, a highly efficient option for Wisconsin's climate.
  • Furnace and Boiler Replacements: They are experts in replacing older heating systems with modern, efficient models.
  • Long-Term Technician Training: The team is continuously trained on the latest industry advancements and technologies.
  • Family-Owned Operation: Decisions are made locally by people invested in the community's well-being.
  • Residential and Light Commercial Focus: They have the skills to handle jobs of various scales, from single-family homes to small businesses.

Why Locals Choose Don-Martin Heating, Cooling & Geothermal

Residents and business owners in Janesville, WI, and the broader service area return to Don-Martin Heating, Cooling & Geothermal for a simple reason: proven reliability. They combine decades of hands-on experience with a genuine understanding of local needs. Their focus on quality workmanship over speed, their specialization in advanced systems like geothermal, and their status as a long-standing local business foster trust. When you need an HVAC partner who knows the area and will do the job right, Don-Martin Heating, Cooling & Geothermal in Janesville, WI, is a clear choice.

Contact Information

Don-Martin Heating, Cooling & Geothermal

★★★★★ 5.0 / 5 (1)

: 4101 Commercial Dr Ste 180, Janesville, WI 53545

: (608) 758-9882

: http://don-martinhvac.com

Business Services

  • HVAC installation or replacement
  • HVAC system repair
  • HVAC system maintenance

Business Location & Hours



Mon:7:30 AM - 4:00 PM
Tue:7:30 AM - 4:00 PM
Wed:7:30 AM - 4:00 PM
Thu:7:30 AM - 4:00 PM
Fri:9:00 AM - 3:00 PM
Sat:Closed
Sun:Closed




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