A quaint and scenic town located on the Souhegan River, Amherst embodies the best of New Hampshire. Beautiful colonial homes, the Ponemah Bog Wildlife Sanctuary, Baboosic Lake, Hodgman State forest, a historic town center and friendly people make for an ideal place to raise a family, retire, relax and embrace adventure. Even the weather brings a little bit of everything, from 199 days of sunshine to 57” of snow and 46” of rain.

Heating, AC & Plumbing Service Near You

MASI Plumbing, Heating & A/C provides the expertise to keep your home comfortable and running efficiently and effectively. We handle everything from new builds to historical homes, bringing you modern innovations to reduce costs, carbon footprint and everyday responsibilities. We focus on quality of equipment and services to deliver maximum reliability and longevity. Call (603) 889-2331 for new installation, replacement, tune-ups, preventative maintenance plans and emergency assistance across Nashua, Milford, Amherst, Hudson, & Merrimack, NH.

Contact MASI Plumbing, Heating & A/C for Local HVAC Services

MASI Plumbing, Heating & A/C is your skilled source for furnace, air conditioner, water heater, generator and all types of heating, cooling and plumbing repairs. We specialized in oil to gas conversion, smart thermostats, bathroom remodels, radiant flooring high-velocity HVAC, hybrid heating, clog and leak repair, indoor air quality add-ons and a comprehensive list of helpful services that improve the enjoyment, health, productivity, safety and value of the living space.

Serving Southern New Hampshire

  • Wilton
  • Milford
  • Amherst
  • Mont Vernon
  • Brookline
  • Hollis
  • Nashua
  • Hudson
  • Litchfield
  • Bedford
  • Manchester
  • Derry
  • Londonderry
  • Windham
  • Pelham
  • Salem

Furnace RepairPlumbingFurnace ReplacementHVAC ∴ Amherst, NH

Heating & Cooling, AC Repair & AC Replacement in Amherst, NH

Paula L.

Came home to my central a/c not working. After checking a few things, I called Masi Plumbing, based off of consumer reviews here. The person who answered the phone was accommodating to my needs and had a service person here super promptly! The service person was very friendly, highly informative and fixed the issue promptly- and not at a high cost either! Will def be calling them for our needs again, and referring them as well. Thanks a million Masi Plumbing!

Susan C.

My pipes froze and burst on a Sunday evening. I called several plumbers who would not give me the time of day. MASI Plumbing to the rescue! They sent a plumber (Nick) out immediately who was able to repair the broken pipes that evening, even though though he had already worked all day! A huge thank you! I highly recommend MASI Plumbing and will be using them exclusively in the future.

Christine C.

Bought a new boiler system from them this year and they gave us the most comprehensive quote for the right work (pointed out the need for fresh air and a new oil line which we knew were needed) at a good price. Unfortunately one of our parts in the system failed, but they had it replaced and our system up and running within 2 hours, and covered under warranty, so no cost to us. They have always been very friendly, down to earth, but professional. Great to work with!