# A's 8 Hvac Mechanical Service **Trade:** HVAC / Heating & Cooling · **Address:** 38 Cummings St, Medford, MA 02155, USA · **Phone:** (857) 214-1365 · **Website:** https://as8air.com/ · **Languages:** English **Rating: 4.0/5** (medium confidence) — from 11 reviews across 4 sources. 100% of sentiment-scored reviews read net-positive. Last 6 months: 1 reviews, 0 negative. ## The honest read A's 8 is a Medford HVAC shop where one name comes up in nearly every review since 2021: Tenzing, who reviewers describe handling the work personally rather than just dispatching a crew. The company's own site describes AS8 Corporation as a Massachusetts-registered contractor doing heating, cooling, ductless mini-split, and water heater work for homeowners. The written record is small but consistent — eleven Google reviews from 2021 through 2026, every one five stars, with Google's own aggregate at 4.7 from 14 ratings. The recurring job is a full system swap rather than a quick fix: in a 2025 review, a homeowner described Tenzing installing two new HVAC systems and a whole-house dehumidifier during a larger renovation, and another 2025 review described him designing a ductless heat pump and basement dehumidifier setup, fitting the job in between bigger projects so the customer didn't have to wait. A 2024 review described a full radiator-to-heat-pump conversion — two heat pump systems with central air installed across two floors over roughly two weeks. The company also gets called for breakdowns: a 2023 review described the team responding during a cold snap to replace a failed heating system, and a 2021 review described an AC circuit fault traced and fixed within 15 minutes of a technician arriving. What reviewers keep repeating isn't a slogan but a pattern: Tenzing personally walking through the design options, replying quickly to texts, and — as one customer put it — not price-gouging on the bigger installs. Worth asking about before booking: the reviews on file are spread across years rather than a steady stream, so it's worth confirming current lead times for a full system install versus a service call. **Strengths:** - Full system installs — new HVAC systems, heat pumps, and dehumidifiers - Owner-led jobs — Tenzing named directly across years of reviews - Responsive scheduling — quick replies, squeezed into a tight install calendar - Emergency response — replaced a failed heating system during a cold snap ## Claims & citations Every claim below is backed by real evidence rows — uncited claims are dropped in code before publication. - Handles full HVAC system installs, including heat-pump conversions and whole-house dehumidifiers _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xSWE5YSndYM0l5VTFwWWJsTkJRbGhmYzFvMVkzYxAB!2m1!1s0x0:0x2d6f2d2263a63573!3m1!1s2@1:CAIQACodChtycF9oOlRXNXJwX3IyU1pYblNBQlhfc1o1Y3c%7C%7C?hl=en) — “5★ Tenzing & his crew are the best - everyone he works with is incredibly polite and always goes the extra mile with everything they do. The…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xWTlFWcE9Ta0pYVmw5dVQxOXVjblIxWTIxMmRXYxAB!2m1!1s0x0:0x2d6f2d2263a63573!3m1!1s2@1:CAIQACodChtycF9oOlVNQVpOSkJXVl9uT19ucnR1Y212dWc%7C%7C?hl=en) — “5★ Installed ductless a/c with heat pump and a dehumidifier in the basement. Tenzing came up with a good design and solutions and kindly squ…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURiOGR5b2RnEAE!2m1!1s0x0:0x2d6f2d2263a63573!3m1!1s2@1:CIHM0ogKEICAgIDb8dyodg%7C%7C?hl=en) — “5★ I've been meaning to write a review for a year now, Tenzing and his team at AS8 completely renovated our existing heating system last yea…” - Owner Tenzing is named directly and described as hands-on in most reviews _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xSWE5YSndYM0l5VTFwWWJsTkJRbGhmYzFvMVkzYxAB!2m1!1s0x0:0x2d6f2d2263a63573!3m1!1s2@1:CAIQACodChtycF9oOlRXNXJwX3IyU1pYblNBQlhfc1o1Y3c%7C%7C?hl=en) — “5★ Tenzing & his crew are the best - everyone he works with is incredibly polite and always goes the extra mile with everything they do. The…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2pKNmFUTnhNelZZVjB0aFFtZHlaVTFKUlZCZk5sRRAB!2m1!1s0x0:0x2d6f2d2263a63573!3m1!1s2@1:CAIQACodChtycF9oOjJ6aTNxMzVYV0thQmdyZU1JRVBfNlE%7C%7C?hl=en) — “5★ I cannot imagine a more dependable, honest, and professional HVAC company. Our a/c unit broke in the middle of a heat wave. Tenzing asses…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUNPNklLNk5BEAE!2m1!1s0x0:0x2d6f2d2263a63573!3m1!1s2@1:CIHM0ogKEICAgICO6IK6NA%7C%7C?hl=en) — “5★ Tenzing and his team have helped me multiple times - with regular maintenance, and, more importantly when heat or AC weren't working. The…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURHa2UtanR3RRAB!2m1!1s0x0:0x2d6f2d2263a63573!3m1!1s2@1:CIHM0ogKEICAgIDGke-jtwE%7C%7C?hl=en) — “5★ I contacted Tenzing at A's 8 HVAC when I had a recent gas fired furnace issue, on the recommendation of a friend. A's 8 were responsive, …” - Responsive to calls and texts, and worked customers into a tight install schedule _(confidence: medium)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xSWE5YSndYM0l5VTFwWWJsTkJRbGhmYzFvMVkzYxAB!2m1!1s0x0:0x2d6f2d2263a63573!3m1!1s2@1:CAIQACodChtycF9oOlRXNXJwX3IyU1pYblNBQlhfc1o1Y3c%7C%7C?hl=en) — “5★ Tenzing & his crew are the best - everyone he works with is incredibly polite and always goes the extra mile with everything they do. The…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xWTlFWcE9Ta0pYVmw5dVQxOXVjblIxWTIxMmRXYxAB!2m1!1s0x0:0x2d6f2d2263a63573!3m1!1s2@1:CAIQACodChtycF9oOlVNQVpOSkJXVl9uT19ucnR1Y212dWc%7C%7C?hl=en) — “5★ Installed ductless a/c with heat pump and a dehumidifier in the basement. Tenzing came up with a good design and solutions and kindly squ…” - Responded during a cold-weather breakdown to diagnose and replace a failed heating system _(confidence: medium)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNod3JHbjB3RRAB!2m1!1s0x0:0x2d6f2d2263a63573!3m1!1s2@1:CIHM0ogKEICAgIChwrGn0wE%7C%7C?hl=en) — “5★ I’ve used this company a few times now. Most recently, this weekend in the middle of the brutally cold temps our system stopped working. …” - Google rating of 4.7 from 14 ratings _(confidence: high)_ - [Google](https://maps.google.com/?cid=3273885079845614963&g_mp=CiVnb29nbGUubWFwcy5wbGFjZXMudjEuUGxhY2VzLkdldFBsYWNlEAIYBCAA) — “Google: 4.7★ from 14 ratings” - Describes itself as a Massachusetts-registered HVAC contractor based in Medford _(confidence: medium)_ - [Official Website](https://as8air.com) — “A'S 8 (AS8 Corporation) is a Massachusetts-registered HVAC contractor based in Medford offering heating, cooling, ductless mini-split, and w…” - Specializes in HVAC / Heating & Cooling _(confidence: high)_ - [Official Website](https://as8air.com) — “A'S 8 (AS8 Corporation) is a Massachusetts-registered HVAC contractor based in Medford offering heating, cooling, ductless mini-split, and w…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xSWE5YSndYM0l5VTFwWWJsTkJRbGhmYzFvMVkzYxAB!2m1!1s0x0:0x2d6f2d2263a63573!3m1!1s2@1:CAIQACodChtycF9oOlRXNXJwX3IyU1pYblNBQlhfc1o1Y3c%7C%7C?hl=en) — “5★ Tenzing & his crew are the best - everyone he works with is incredibly polite and always goes the extra mile with everything they do. The…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2xWTlFWcE9Ta0pYVmw5dVQxOXVjblIxWTIxMmRXYxAB!2m1!1s0x0:0x2d6f2d2263a63573!3m1!1s2@1:CAIQACodChtycF9oOlVNQVpOSkJXVl9uT19ucnR1Y212dWc%7C%7C?hl=en) — “5★ Installed ductless a/c with heat pump and a dehumidifier in the basement. Tenzing came up with a good design and solutions and kindly squ…” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURiOGR5b2RnEAE!2m1!1s0x0:0x2d6f2d2263a63573!3m1!1s2@1:CIHM0ogKEICAgIDb8dyodg%7C%7C?hl=en) — “5★ I've been meaning to write a review for a year now, Tenzing and his team at AS8 completely renovated our existing heating system last yea…” ## License Status: **not_found** — verified against the official MA state registry, never self-reported. Re-check at the official registry: https://occupationallicensingandpermitting.mass.gov/madol/s/license-search-page ## Sources - [Google](https://www.google.com/maps/search/?api=1&query=A's%208%20Hvac%20Mechanical%20Service&query_place_id=ChIJ__9rytZ244kRczWmYyItby0): 4.7★ from 14 ratings - [Google Reviews](https://www.google.com/maps/search/?api=1&query=A's%208%20Hvac%20Mechanical%20Service&query_place_id=ChIJ__9rytZ244kRczWmYyItby0): Listed on this source - [Official Website](https://as8air.com): Self-reported profile and service details - [Exa](https://hvacservice.io/ma/medford/a-s-8-hvac-mechanical-service): 7 web mentions across the open web (each linked to its source) ## Mentions Unverified third-party mentions found on the open web — relay with attribution ("a Reddit commenter said…"), never as Tavlee's own finding. - “A's 8 are great. https://as8air.com/” — u/MakingTime71 in r/CambridgeMA (2023-07-27) — https://www.reddit.com/r/CambridgeMA/comments/15b3uxb/recommendations_for_heat_pump_installers/jtpzt5r/ ## Recent reviews - **5/5 · Google Reviews · Jack Lieder · 2026-03-05**: Excellent HVAC service company. Highly recommend. - **5/5 · Google Reviews · Liz Henry · 2025-10-25**: Tenzing & his crew are the best - everyone he works with is incredibly polite and always goes the extra mile with everything they do. They installed 2 new HVAC systems and a whole house dehumidifier during a major renovation. Highly recommend! Very dependable and quick to reply to any texts. - **5/5 · Google Reviews · Stewart and Elanah Uretsky · 2025-10-14**: I cannot imagine a more dependable, honest, and professional HVAC company. Our a/c unit broke in the middle of a heat wave. Tenzing assessed the entire situation and communicated back and forth with the a/c company to make sure that he was choosing the proper system to match the duct work in our hou… - **5/5 · Google Reviews · D Gal · 2025-06-12**: Installed ductless a/c with heat pump and a dehumidifier in the basement. Tenzing came up with a good design and solutions and kindly squeezed us in between bigger jobs so we didn't have to wait. His guys really know what they are doing and work their butts off. Top notch expertise and professionali… - **5/5 · Google Reviews · Susan Maynard · 2024-08-06**: I've been meaning to write a review for a year now, Tenzing and his team at AS8 completely renovated our existing heating system last year in June 2023. We went from radiators and no AC, to 2 heat pump systems with central air and heating. The fabulous team worked hard on site for approximately 2 we… - **5/5 · Google Reviews · edwin ojeda · 2023-05-14**: Best Mom and pop air conditioning technician and installers in the business. - **5/5 · Google Reviews · Nicole DaSilva · 2023-02-08**: I’ve used this company a few times now. Most recently, this weekend in the middle of the brutally cold temps our system stopped working. They came out to assess, made sure we were safe, and worked with us to order and install a new heating system. Tenzing was great answering all of our questions and… - **5/5 · Google Reviews · Sam Stern · 2022-05-31**: Tenzing and his team have helped me multiple times - with regular maintenance, and, more importantly when heat or AC weren't working. They're responsive, diligent, very respectful of being in your home, and they do good work. - **5/5 · Google Reviews · Jesse Boardman · 2021-12-13**: Tenzing and his associate were very kind, knowledgeable, efficient, and thorough in their work and explanation of the issue. Will absolutely call them again in the future for any air or heating needs! - **5/5 · Google Reviews · Joshua Blouwolff · 2021-12-01**: I contacted Tenzing at A's 8 HVAC when I had a recent gas fired furnace issue, on the recommendation of a friend. A's 8 were responsive, professional, knowledgeable and efficient. They diagnosed the problem with my furnace and figured out how to correct the problem. They also explained to me what wa… --- Data freshness: last scanned 2026-07-02T10:42:58.371Z. Cite as: A's 8 Hvac Mechanical Service — Tavlee (https://tavlee.com/contractor/a-s-8-hvac-mechanical-service-medford) Source: https://tavlee.com/contractor/a-s-8-hvac-mechanical-service-medford