For heat pump installation, replacement, maintenance, or repair, trust your local experts in Southern New Hampshire.

Family owned and operated, MASI Plumbing, Heating & A/C is a dedicated part of the community we serve. We’ve consistently been taking good care of the comfort of our friends and neighbors. Over our many years of service, we’ve kept up with the evolution of heat pumps. Modern technology has streamlined equipment while optimizing heating/cooling capacity and energy efficiency. These innovative systems are more popular, affordable, and effective than ever.

Heat Pump Repairs, Service & Installations

Whether you’re interested in optimizing the performance of an existing heat pump or taking advantage of convenient and cost-saving features of a new system, MASI Plumbing, Heating & A/C is always the right call to make. We answer with timely arrival, free estimates, and flat rate pricing. Drawing from proven manufacturers such as Navien, Rinnai, Amana, Goodman, and Rheem, we match your needs to the very best options, maximizing rewards and satisfaction.

Call on our team for heat pump services you can trust!

Our licensed technicians look forward to working with you and specialize in hybrid systems to ensure perfect year round temperature control at minimum costs. MASI Plumbing, Heating & A/C offers brands, experience, and service you can trust. We are on-call 24/7 for Emergency Repair across Nashua, Milford, Amherst, Hudson, & Merrimack, NH.

Serving Southern New Hampshire

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

Heating & CoolingHVAC ServiceHeat Pump Hybrid Systems

Heat Pump Repair, Heat Pump Service & Heat Pump Installation Merrimack, NH, Hudson, NH, Nashua, NH, Amherst, NH & Milford, 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!