High Efficiency

High Efficiency is a large HVAC, plumbing and indoor-air-quality contractor based in Sandwich, founded in 2010 by Craig Bishop, who brought on Julie Lawson as a partner in 2015. The company serves Cape Cod, the Islands, the South Shore and South Coast, offers 24-hour emergency service, and installs Trane, Mitsubishi, Ecoer, Aprilaire and HTP equipment. With 215 reviews on file and hundreds more on Google, this is one of the most reviewed contractors in the area, and the overall pattern is strongly positive. Recent reviews describe fast, thorough diagnostic and repair visits — condensers cleaned unprompted, refrigerant issues explained clearly, and technicians repeatedly praised by name for knowledgeable, courteous work. Multiple recent reviewers describe the company as one of the few places on the Cape where "a human answers the phone" during emergencies, including a gas leak that required immediate attention on a summer holiday weekend. In a 2025 review, a customer who said they'd worked in HVAC for over 30 years called an extensive home renovation project handled by High Efficiency close to a perfect experience. Larger installations — heat pumps, mini-splits, full duct reconfigurations — also draw consistent praise for professionalism and attention to detail in reviews spanning 2023 through 2026. A real minority of reviews describe a different experience, and the pattern recurs across years rather than being a single incident. Recent 2026 reviews describe a month-long wait for a part with an AC left broken through most of a summer and minimal follow-up despite repeated calls, and a customer treated poorly after a $20,000 heating and hot water system purchase who also had multiple unsuccessful attempts to fix a gas fireplace. Another recent review alleged overpriced, poor-quality work that damaged the home, plus unfriendly phone staff. A 2024 review described a boiler-replacement quote 40% higher than a competing bid for identical scope. Two 2023 reviews described high hourly rates plus a distance-based charge, and one called the owner "extremely rude." There's no indication one way or the other of how any of these were resolved. Its Massachusetts HVAC license (#924-SM-B) is active, verified against the state registry and held by High Efficiency LLC. BBB rates the business A+. For a big Cape Cod HVAC and plumbing operation, this is a company with a strong overall reputation, especially for responsiveness and technical quality on the job — but the same size that gives it a large positive footprint also means office-side scheduling and pricing complaints surface repeatedly enough to be worth asking about directly, especially on larger jobs where a second quote may be worthwhile.