Commercial & Industrial Services At Coastal Efficiency, we provide comprehensive mechanical contracting solutions for commercial and industrial clients across Maine and New Hampshire. With over 40 years of experience, our experienced team delivers dependable installation, maintenance, and project support tailored to each facility’s unique requirements. From HVAC and plumbing to specialized industrial systems, we combine […]

Residential Services At Coastal Efficiency, we specialize in keeping homes comfortable year-round. Our team provides expert heating, cooling, plumbing, and home contracting services across Southern Maine and New Hampshire. Whether you’re building new, renovating, or maintaining your current systems, you can count on us for reliable service, quality craftsmanship, and lasting comfort. Heating Cooling & […]