Marathon HVAC

Hours

Weekly hours are listed below.

Monday8:00 am - 4:30 pm
Tuesday8:00 am - 4:30 pm
Wednesday8:00 am - 4:30 pm
Thursday8:00 am - 4:30 pm
Friday8:00 am - 4:30 pm
SaturdayClosed
SundayClosed

From Google, checked May 2026.

Locally Trusted to Enhance Comfort and Efficiency in New Hampshire. Reliable and Energy-Efficient HVAC Solutions for Every Home and Business. We specialize in the installation, service and maintenance of heating, ventilation, air conditioning.

From the business Google listing

Marathon HVAC provides reliable, energy-efficient heating and cooling services across New Hampshire — proudly serving Rochester, Dover, Somersworth, Wakefield, Farmington, Alton, Meredith, Laconia, Conway, North Conway, Sanbornville, Moultonborough, and Wolfeboro. We specialize in furnace, boiler, and A/C repair and installation, mini-split systems, and seasonal maintenance for residential and commercial customers. Known for honest pricing, no hidden fees, and fast, friendly service. Call or text today for a free estimate — no shop, truck, or fuel surcharge fees, ever. Just simple, straightforward parts and labor pricing.

From the business's Google listing, checked Oct 2026.

What this listing mentions

  • Installation service
  • Repair service
  • Online estimates

From the business's Google listing, checked Oct 2026.

Google Reviews

5.0 (10) Google Reviews

Ratings as of October 2026. See this business on Google

We recently had Marathon install several mini-split units in our home, and we couldn’t be happier with the entire experience. The project took several days as expected for a job of this size, but their team was incredibly professional from start to finish. They were always punctual, showed up when scheduled, and worked late into the evening to make sure the job was fully completed each day. The technicians were kind, knowledgeable, and genuinely helpful — they took the time to explain everything, answer all our questions. What really stood out was their pricing.

5 out of 5 Paula B. Quote shortened.

Keith did an excellent job explaining the available options and working with me to get a system that met my needs. He did an excellent job installing it and his attention to detail and professionalism was outstanding.

5 out of 5 Eric E.

Had some issues with our Minisplit system no longer producing heat right as it started to frost. Keith, our technician, came by on a weekend and got us fully operational in just under an hour and under two hundred dollars for a complex system, he was able to explain what happened, what he did to fix it, and preventative maintenance for us for future along with pictures and a full walk through. Keith is awesome, Marathon has a long term minisplit customer from us.

5 out of 5 Athena R.

These quotes come from Google Reviews and belong to their authors.