High Efficiency LLC
About High Efficiency LLC
High Efficiency has loyally served residential and commercial customers across Cape Cod, Martha’s Vineyard, and Nantucket since 2010. Fully licensed, trained, and insured, High Efficiency is the Cape’s front-running expert on cutting-edge HVAC and Plumbing Technologies.
Request a Quote
Get a free estimate for your project
Project Gallery
No photos available
Customer Reviews224 reviews
by Thomas D.
I recently had a very positive experience with High Efficiency. They replaced my A/C unit. Conditions were challenging (small crawl space attic). Technicians were knowledgeable, professional and ensured a proper.
by Brian C.
High Efficiency was amazing!!! My pilot on my boiler went out and the next day High Efficiency was here to inspect clean and service my boiler.
by Tyler A.
I can’t recommend this company enough. I chose them to install my new gas water heater and mini split system. Every part of this company is professional.
221 more reviews on Google
Average rating: 4.7 stars
Service Area
Quick Stats
Similar Installers
Find other verified installers in your area
View All in SandwichReady to Start Your Project?
Contact High Efficiency LLC today for a free consultation and quote for your heat pumps project.