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Your local heat pump company run by Dave and Nate Curtis.

Our Story

It began with a dream that we could help homeowners save money by reducing oil, wood, and gas consumption to minimize our carbon footprint on the environment. With 15 years behind us, we are excited to offer you our expertise in Heat Pumps and all the eco-friendly ways we can save you money.

Dave Curtis

David is the original owner of Dave’s Mechanical Maintenance, Inc. which began as a dream over 10 years ago. With over forty years experience as an HVAC Technician for large commercial companies, Dave holds several HVAC and Electrical licenses. Dave has several years of experience installing and maintaining heat pumps in the residential and business sectors. He prides himself not only in the clean, masterful work that he does; but, also in being a husband, father, and grandfather.

Nate Curtis

A family man and proud Mainer; Nate was brought on as an owner in 2018. Nate has a degree in Environmental Science from Suffolk University and is also seasoned in the installation and service of heat pumps. With prior experience working for the EPA Nate can tell you all about the savings you and your family will enjoy, while lessening your carbon footprint on our Earth.


Here at DMM, we strive to make community involvement at the forefront of our business. We see real value in supporting the place that helped raise us. From Old Town Little League Sponsorships, to Riverfest parades, to supporting teachers in the local school systems, we are always looking for ways to connect with those around us. As we grow as a business, we will continue to connect and support the people, businesses, and schools in this area.

Some Praise From Our Past Clients

Maine’s Most Experienced Heat Pump Team

The official heat pump provider of the University of Maine Black Bears

The official heat pump provider
of the Black Bears