# High Efficiency Energy Solutions

**Trade:** Insulation & Weatherization · **Part of:** Cape Cod Energy Solutions · **Address:** 378 MA-130, Sandwich, MA 02563 · **Phone:** (774) 205-2001 · **Website:** https://highefficiencyenergysolutions.com/ · **Languages:** English

**Rating: 3.8/5** (medium confidence) — from 14 reviews across 5 sources.
93% of sentiment-scored reviews read net-positive. Last 6 months: 0 reviews, 0 negative.

## The honest read

Almost every job here starts with a Mass Save energy assessment, and that is the through-line: High Efficiency Energy Solutions is a Sandwich home-performance outfit that audits a house, then seals it, insulates it and often swaps the heating equipment while it's there. The company says Craig Bishop and Julie Lawson founded it in 2016, that it works within the Cape Cod Energy Solutions network, and that it is a certified Mass Save partner.

The auditors get named more than anyone else. A December 2023 reviewer admitted to being nervous about the audit until Corey, the lead auditor, spent five minutes at the kitchen table walking through the process and the benefits. A January 2024 customer on their third Mass Save audit called this one the best of the three and described a crew where everyone knew their role. In January 2026, a homeowner whose Mass Save weatherization project had just wrapped credited Evan and Corey with explaining each step, leaving the house immaculate, and catching a GFI problem along the way.

The mechanical side shows up as well. An August 2024 reviewer had a furnace put in six years earlier and came back for central air and an electric heat pump, calling the prices more than fair. An April 2024 customer said the equipment was exactly as specified, the install team was quick and the office staff easy to reach. A July 2025 reviewer working through a long, complicated weatherization project gave four stars and described dealing with separate insulation, heat pump and plumbing teams. A January 2022 customer said attic and basement insulation plus weatherstripping left the whole house feeling noticeably tighter.

One sharp dissent runs against all of that, and it deserves a direct question. In July 2022 a reviewer left one star and wrote that the company pushed fiberglass insulation for the attic over blow-in during the initial audit — after being told the attic was going to be finished — arguing it was simply the more expensive option and the more profitable one for the contractor. If you are being steered toward one insulation type, ask for the reasoning in writing and what the alternative would cost.

The stated territory is wide: Cape Cod, the South Shore and the South Coast, from Barnstable and Chatham through Brockton, Bridgewater and Fall River. This is a sensible call for a Mass Save-routed weatherization job where the audit, the air sealing and the equipment all come from one outfit. Confirm what the rebate actually covers, and get the insulation spec and its alternatives on paper before the crew shows up.

**Strengths:**
- Mass Save weatherization — the program-routed audit and insulation job they do most
- Named auditors — Corey and Evan credited by customers across several years
- Clean job sites — floor coverings laid down, homes left immaculate
- Reachable office — reviewers repeatedly cite easy, diligent communication
- Heat pumps and furnaces — one customer returned years later for more equipment

**Concerns:**
- Insulation recommendation disputed — a 2022 reviewer called the fiberglass push an upsell
- Long projects need coordination — separate insulation, heat pump and plumbing teams
- Dated review trail — the newest customer account is from January 2026

## Claims & citations

Every claim below is backed by real evidence rows — uncited claims are dropped in code before publication.

- A home performance contractor based in Sandwich providing Mass Save energy assessments, air sealing and weatherization, spray foam insulation, HVAC system assessment and duct sealing across Cape Cod, the South Shore and the South Coast _(confidence: high)_
  - [Official Website](https://highefficiencyenergysolutions.com) — “Home performance contractor based in Sandwich, MA providing Mass Save energy assessments, air sealing/weatherization, spray foam insulation,…”
- The company says it is a certified Mass Save home performance partner _(confidence: medium)_
  - [Official Website](https://highefficiencyenergysolutions.com) — “Stated certification/affiliation: Mass Save Partner (certified Mass Save home performance contractor)”
- Self-reported as founded in 2016 by Craig Bishop and Julie Lawson, operating within the Cape Cod Energy Solutions network, with about ten years in business _(confidence: medium)_
  - [Official Website](https://highefficiencyenergysolutions.com) — “Company history (self-reported): Founded by Craig Bishop and Julie Lawson in 2016.”
  - [Official Website](https://highefficiencyenergysolutions.com) — “Ownership (self-reported): Co-founded and owned by Craig Bishop and Julie Lawson, who also run a sister/partner company ("Our Partner Busine…”
  - [Official Website](https://highefficiencyenergysolutions.com) — “Operates under (self-reported): Cape Cod Energy Solutions (network)”
  - [Official Website](https://highefficiencyenergysolutions.com) — “Self-reported 10 years in business”
- Google shows 4.4 stars from 17 ratings _(confidence: high)_
  - [Google](https://www.google.com/maps/search/?api=1&query=High%20Efficiency%20Energy%20Solutions&query_place_id=ChIJq6oac4XL5IkRrb8LG7fiOWk) — “Google: 4.4★ from 17 ratings”
- Stated service area spans Cape Cod, the South Shore and the South Coast, including Barnstable, Bourne, Brewster, Chatham, Dennis, Eastham, Brockton, Bridgewater, Duxbury, Dartmouth, Fairhaven and Fall River _(confidence: medium)_
  - [Official Website](https://highefficiencyenergysolutions.com) — “Stated service area (self-reported): Arlington, Barnstable, Bourne, Brewster, Bridgewater, Brockton, Chatham, Dartmouth, Dennis, Duxbury, Ea…”
- Mass Save weatherization work is the core job — a January 2026 customer described a completed Mass Save project and a January 2022 customer a Mass Save assessment followed by attic and basement insulation and weatherstripping _(confidence: high)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xSd1IzTmxaR05NY1U4NGIwUnBka05MWVZseVZVRRAB!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CAIQACodChtycF9oOlRwR3NlZGNMcU84b0RpdkNLYVlyVUE%7C%7C?hl=en) — “5★ High Efficiency Energy Solutions just completed our weatherization project contracted through Mass Save.  Evan and Corey were amazingly k…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUNtcDVYdVpBEAE!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgICmp5XuZA%7C%7C?hl=en) — “5★ Cape Cod Energy Solutions completed a MassSave energy assessment, and follow-up attic and basement insulation, weatherstripping, etc.  Pr…”
- Auditors are named and credited across years — a December 2023 reviewer said lead auditor Corey put them at ease in five minutes, and a January 2024 customer on their third Mass Save audit called this the best of them _(confidence: high)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUMxNl95QzZnRRAB!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgIC16_yC6gE%7C%7C?hl=en) — “5★ Corey,Evan and the rest of the team were extremely professional and thorough. Way beyond my expectations. This is my 3rd use of mass ener…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURWLXFETy1RRRAB!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgIDV-qDO-QE%7C%7C?hl=en) — “5★ Corey, the Lead Auditor, conducted my energy audit.  For some reason, I was really nervous about the audit.  However, after 5 minutes sit…”
- Crews are described as protecting and cleaning the house — a January 2022 customer said floor coverings were laid down and the site cleaned up, and a January 2026 customer said the home was left immaculate _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xSd1IzTmxaR05NY1U4NGIwUnBka05MWVZseVZVRRAB!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CAIQACodChtycF9oOlRwR3NlZGNMcU84b0RpdkNLYVlyVUE%7C%7C?hl=en) — “5★ High Efficiency Energy Solutions just completed our weatherization project contracted through Mass Save.  Evan and Corey were amazingly k…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURtMUx6cVZBEAE!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgIDm1LzqVA%7C%7C?hl=en) — “5★ The administrative team was very helpful and communicated well.

The on site team was so polite.  They laid out floor coverings to protec…”
- Office staff draw repeated praise for communication and reachability _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNqNzQzdmdBRRAB!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgICj743vgAE%7C%7C?hl=en) — “5★ What a great group of folks!

Our experience with High-Efficiencie's team was "seemless". The equipment was exactly as specified. The ins…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURKeXFtU2RREAE!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgIDJyqmSdQ%7C%7C?hl=en) — “5★ Marcy was wonderful. Very professional and thorough and took the time to explain everything so we understood it. Office staff is just a n…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURXaHFiTGNnEAE!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgIDWhqbLcg%7C%7C?hl=en) — “5★ Good team going on over there, office staff is professional an friendly. Crew was polite and professional and on time.”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURtMUx6cVZBEAE!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgIDm1LzqVA%7C%7C?hl=en) — “5★ The administrative team was very helpful and communicated well.

The on site team was so polite.  They laid out floor coverings to protec…”
- Heating and cooling equipment work is documented — an August 2024 reviewer had a furnace installed six years earlier and returned for central air and an electric heat pump, and an April 2024 customer said the equipment was exactly as specified _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURiLUotNzZ3RRAB!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgIDb-J-76wE%7C%7C?hl=en) — “5★ The wonderful folks at HIGH EFFICIENCY put in our new furnace six years and now installed our central air/electric heat pump.  The workma…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNqNzQzdmdBRRAB!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgICj743vgAE%7C%7C?hl=en) — “5★ What a great group of folks!

Our experience with High-Efficiencie's team was "seemless". The equipment was exactly as specified. The ins…”
- A December 2021 customer listed the scope delivered — eave vent holes, an insulated garage-to-basement door, added attic insulation, light bulbs and water measures _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURHaWRqUE53EAE!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgIDGidjPNw%7C%7C?hl=en) — “4★ they come out do the audit, tell you all the things you are going to get and that needs done.  it was pretty amazingm they did the vent h…”
- A July 2022 one-star reviewer wrote that the company insisted on fiberglass attic insulation over blow-in during the initial audit, after being told the attic was to be finished, and characterized it as the more expensive and more profitable choice for the contractor _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUN1dXUyYnBnRRAB!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgICuuu2bpgE%7C%7C?hl=en) — “1★ Scam artists. First off they insisted on using fiber glass insulation(telling me it was better than blow in insulation, which is incorrec…”
- A July 2025 reviewer working a lengthy, complicated weatherization project gave four stars and described coordinating across separate insulation, heat pump and plumbing teams _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2kxc1N6ZFFkekZsWDFkeGFtc3pVa3hCTVdGNGRFRRAB!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CAIQACodChtycF9oOi1sSzdQdzFlX1dxamszUkxBMWF4dEE%7C%7C?hl=en) — “4★ High Efficiency Energy Solutions has been my partner for a lengthy, complicated home weatherization project.  I've been very grateful for…”
- Mass Save energy assessments and audits _(confidence: high)_
  - [Official Website](https://highefficiencyenergysolutions.com) — “Home performance contractor based in Sandwich, MA providing Mass Save energy assessments, air sealing/weatherization, spray foam insulation,…”
  - [Official Website](https://highefficiencyenergysolutions.com) — “Stated certification/affiliation: Mass Save Partner (certified Mass Save home performance contractor)”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURWLXFETy1RRRAB!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgIDV-qDO-QE%7C%7C?hl=en) — “5★ Corey, the Lead Auditor, conducted my energy audit.  For some reason, I was really nervous about the audit.  However, after 5 minutes sit…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUNtcDVYdVpBEAE!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgICmp5XuZA%7C%7C?hl=en) — “5★ Cape Cod Energy Solutions completed a MassSave energy assessment, and follow-up attic and basement insulation, weatherstripping, etc.  Pr…”
- Air sealing, weatherization, attic and basement insulation, spray foam and weatherstripping _(confidence: high)_
  - [Official Website](https://highefficiencyenergysolutions.com) — “Home performance contractor based in Sandwich, MA providing Mass Save energy assessments, air sealing/weatherization, spray foam insulation,…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURHaWRqUE53EAE!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgIDGidjPNw%7C%7C?hl=en) — “4★ they come out do the audit, tell you all the things you are going to get and that needs done.  it was pretty amazingm they did the vent h…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUNtcDVYdVpBEAE!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgICmp5XuZA%7C%7C?hl=en) — “5★ Cape Cod Energy Solutions completed a MassSave energy assessment, and follow-up attic and basement insulation, weatherstripping, etc.  Pr…”
- Duct sealing and aeroseal work _(confidence: medium)_
  - [Official Website](https://highefficiencyenergysolutions.com) — “Home performance contractor based in Sandwich, MA providing Mass Save energy assessments, air sealing/weatherization, spray foam insulation,…”
- Furnace, central air and electric heat pump installation _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2kxc1N6ZFFkekZsWDFkeGFtc3pVa3hCTVdGNGRFRRAB!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CAIQACodChtycF9oOi1sSzdQdzFlX1dxamszUkxBMWF4dEE%7C%7C?hl=en) — “4★ High Efficiency Energy Solutions has been my partner for a lengthy, complicated home weatherization project.  I've been very grateful for…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURiLUotNzZ3RRAB!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgIDb-J-76wE%7C%7C?hl=en) — “5★ The wonderful folks at HIGH EFFICIENCY put in our new furnace six years and now installed our central air/electric heat pump.  The workma…”
- Fourteen customer accounts from 2021 to 2026 — mostly five stars for audits and weatherization, one four-star account of a long project and one one-star complaint about an insulation recommendation — against a 4.4-star Google average from 17 ratings _(confidence: medium)_
  - [Google](https://www.google.com/maps/search/?api=1&query=High%20Efficiency%20Energy%20Solutions&query_place_id=ChIJq6oac4XL5IkRrb8LG7fiOWk) — “Google: 4.4★ from 17 ratings”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xSd1IzTmxaR05NY1U4NGIwUnBka05MWVZseVZVRRAB!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CAIQACodChtycF9oOlRwR3NlZGNMcU84b0RpdkNLYVlyVUE%7C%7C?hl=en) — “5★ High Efficiency Energy Solutions just completed our weatherization project contracted through Mass Save.  Evan and Corey were amazingly k…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2kxc1N6ZFFkekZsWDFkeGFtc3pVa3hCTVdGNGRFRRAB!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CAIQACodChtycF9oOi1sSzdQdzFlX1dxamszUkxBMWF4dEE%7C%7C?hl=en) — “4★ High Efficiency Energy Solutions has been my partner for a lengthy, complicated home weatherization project.  I've been very grateful for…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUN1dXUyYnBnRRAB!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgICuuu2bpgE%7C%7C?hl=en) — “1★ Scam artists. First off they insisted on using fiber glass insulation(telling me it was better than blow in insulation, which is incorrec…”
- Specializes in Insulation & Weatherization _(confidence: high)_
  - [Official Website](https://highefficiencyenergysolutions.com) — “Home performance contractor based in Sandwich, MA providing Mass Save energy assessments, air sealing/weatherization, spray foam insulation,…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xSd1IzTmxaR05NY1U4NGIwUnBka05MWVZseVZVRRAB!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CAIQACodChtycF9oOlRwR3NlZGNMcU84b0RpdkNLYVlyVUE%7C%7C?hl=en) — “5★ High Efficiency Energy Solutions just completed our weatherization project contracted through Mass Save.  Evan and Corey were amazingly k…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURHaWRqUE53EAE!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgIDGidjPNw%7C%7C?hl=en) — “4★ they come out do the audit, tell you all the things you are going to get and that needs done.  it was pretty amazingm they did the vent h…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUNtcDVYdVpBEAE!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgICmp5XuZA%7C%7C?hl=en) — “5★ Cape Cod Energy Solutions completed a MassSave energy assessment, and follow-up attic and basement insulation, weatherstripping, etc.  Pr…”
- Also offers HVAC / Heating & Cooling _(confidence: medium)_
  - [Official Website](https://highefficiencyenergysolutions.com) — “Home performance contractor based in Sandwich, MA providing Mass Save energy assessments, air sealing/weatherization, spray foam insulation,…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2kxc1N6ZFFkekZsWDFkeGFtc3pVa3hCTVdGNGRFRRAB!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CAIQACodChtycF9oOi1sSzdQdzFlX1dxamszUkxBMWF4dEE%7C%7C?hl=en) — “4★ High Efficiency Energy Solutions has been my partner for a lengthy, complicated home weatherization project.  I've been very grateful for…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURiLUotNzZ3RRAB!2m1!1s0x0:0x6939e2b71b0bbfad!3m1!1s2@1:CIHM0ogKEICAgIDb-J-76wE%7C%7C?hl=en) — “5★ The wonderful folks at HIGH EFFICIENCY put in our new furnace six years and now installed our central air/electric heat pump.  The workma…”

## License

No license record has been checked yet for this contractor.

## Sources

- [Google](https://www.google.com/maps/search/?api=1&query=High%20Efficiency%20Energy%20Solutions&query_place_id=ChIJq6oac4XL5IkRrb8LG7fiOWk): 4.4★ from 17 ratings
- [Google Reviews](https://www.google.com/maps/search/?api=1&query=High%20Efficiency%20Energy%20Solutions&query_place_id=ChIJq6oac4XL5IkRrb8LG7fiOWk): Listed on this source
- [Yelp](https://www.yelp.com/biz/high-efficiency-energy-solutions-sandwich-3): Listed on this source
- [Official Website](https://highefficiencyenergysolutions.com): 10 yrs in business · Self-reported profile and service details
- [Exa](https://highefficiencyenergysolutions.com/air-sealing-cape-cod-stop-drafts-cut-energy-bills/): 0 web mentions across the open web (each linked to its source)

## Recent reviews

- **5/5 · Google Reviews · Kathleen Beriau · 2026-01-12**: High Efficiency Energy Solutions just completed our weatherization project contracted through Mass Save.  Evan and Corey were amazingly knowledgeable, kind, polite and efficient.  All along they way they explained each step, left our home immaculate and even discovered a GFI that we had long forgott…
- **4/5 · Google Reviews · Laura Allen · 2025-07-18**: High Efficiency Energy Solutions has been my partner for a lengthy, complicated home weatherization project.  I've been very grateful for the professionalism, expertise, and gracious customer service demonstrated by the various insulation, heat pump, and plumbing teams I've worked with on this initi…
- **5/5 · Google Reviews · A SEA · 2024-10-01**: Great workmanship with professional service.
- **5/5 · Google Reviews · Mick Carlon · 2024-08-02**: The wonderful folks at HIGH EFFICIENCY put in our new furnace six years and now installed our central air/electric heat pump.  The workmanship is TOP NOTCH, the prices more than fair, and the extra help you receive is EXCELLENT.  These are good folks doing EXCELLENT WORK.  I cannot recommend HIGH EF…
- **5/5 · Google Reviews · Pteron · 2024-04-27**: What a great group of folks!

Our experience with High-Efficiencie's team was "seemless". The equipment was exactly as specified. The installation team was speedy, courteous, and knowledgeable. The follow up was fast and efficient; Office staff: Diligent and easily reached. Am recommending to all.
- **5/5 · Google Reviews · Dan O’Neil · 2024-01-03**: Corey,Evan and the rest of the team were extremely professional and thorough. Way beyond my expectations. This is my 3rd use of mass energy audit and my best experience.

They operated with precision; everyone knew their role and carried out activities throughout the house.

Professional and experti…
- **5/5 · Google Reviews · speen1651 · 2023-12-12**: Corey, the Lead Auditor, conducted my energy audit.  For some reason, I was really nervous about the audit.  However, after 5 minutes sitting at my kitchen table listening to Corey describe the process and the benefits, I was put completely at ease.  I was looking forward to what I could learn from …
- **5/5 · Google Reviews · Ash · 2023-07-14**: The crew was fantastic. They were polite and professional and answered any questions. The office was friendly and the auditor was very thorough.
- **5/5 · Google Reviews · Alice · 2023-07-14**: Marcy was wonderful. Very professional and thorough and took the time to explain everything so we understood it. Office staff is just a nice.
- **1/5 · Google Reviews · Jon Pearson (jp9183) · 2022-07-26**: Scam artists. First off they insisted on using fiber glass insulation(telling me it was better than blow in insulation, which is incorrect as it’s just more expensive and more money for them) in my attic during the intial audit after I explained I would be soon finishing the attic. They made it seem…

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Data freshness: last scanned 2026-08-23T20:07:55.572Z.
Cite as: High Efficiency Energy Solutions — Tavlee (https://tavlee.com/contractor/high-efficiency-energy-solutions-sandwich)
Source: https://tavlee.com/contractor/high-efficiency-energy-solutions-sandwich