--- title: "Environmental Engineering Inc" description: "Environmental Engineering, Incorporated describes itself as a heating, ventilating and air conditioning engineering and contracting firm founded in 1969, s" doc_version: "2026-10-19" last_updated: "2026-10-19" --- # Environmental Engineering Inc **Trade:** HVAC / Heating & Cooling · **Address:** 100 Old Gate Ln, Milford, CT 06460 · **Phone:** (203) 874-0812 · **Website:** https://www.eei-hvac.com/ · **Languages:** English **Rating: 3.2/5** (low confidence) — from 4 reviews across 6 sources. ## The honest read Environmental Engineering, Incorporated describes itself as a heating, ventilating and air conditioning engineering and contracting firm founded in 1969, serving the commercial, industrial and institutional sectors. Its website lists 24/7 emergency service. A recent Google reviewer, a facility manager for an assisted living community, says they have worked with EEI for several years, from preventative maintenance services to major projects, and praises punctual, thorough work and communication. A 2021 customer called it a commercial grade HVAC company and said they had also used it for plumbing. A 2024 customer said they were hung up on three times on the phone and then left on hold for over 5 minutes. A 2024 customer wrote that they had emailed the company twice without hearing back. It holds an active Connecticut S1 heating and cooling contractor licence, HTG.0302901-S1, under Environmental Engineering. **Strengths:** - Several-year client — a recent facility manager has used EEI for years - Maintenance to major projects — a recent reviewer praises punctual, thorough work **Concerns:** - Phone handling — a 2024 customer said they were hung up on three times - Email replies — a 2024 customer emailed twice without hearing back ## Claims & citations Every claim below is backed by real evidence rows — uncited claims are dropped in code before publication. - Describes itself as an HVAC engineering and contracting firm founded in 1969 serving commercial, industrial and institutional clients _(confidence: high)_ - [Official Website](https://www.eei-hvac.com) — “About (self-reported, verbatim): Environmental Engineering, Incorporated is a heating, ventilating and air conditioning engineering and cont…” - A recent reviewer, a facility manager, has used EEI for several years for maintenance and major projects _(confidence: medium)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2kxcGEwOVpaV1F6ZW5scWVUTjViV0ZpVUV4NFJrRRAB!2m1!1s0x0:0xb44de6c9beebf3f7!3m1!1s2@1:CAIQACodChtycF9oOi1pa09ZZWQzenlqeTN5bWFiUEx4RkE%7C%7C?hl=en-US) — “5★ These guys are excellent! I am a facility manager for an assisted living community, I've worked with EEI for several years now. From Prev…” - A 2021 customer said they used the company for HVAC and plumbing _(confidence: low)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURHbzdhUDlnRRAB!2m1!1s0x0:0xb44de6c9beebf3f7!3m1!1s2@1:CIHM0ogKEICAgIDGo7aP9gE%7C%7C?hl=en-US) — “5★ These people are top notch commercial grade HVAC company. I have also used them for plumbing. Both divisions are quite professional and o…” - A 2024 customer said they were hung up on three times when calling _(confidence: medium)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUR2dy1ESFhnEAE!2m1!1s0x0:0xb44de6c9beebf3f7!3m1!1s2@1:CIHM0ogKEICAgIDvw-DHXg%7C%7C?hl=en-US) — “1★ People answering the phone are very rude. I was hung up on the phone 3 times and the last time on hold for over 5 mins.” - A 2024 customer said two emails went unanswered _(confidence: medium)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUM5aFluS05BEAE!2m1!1s0x0:0xb44de6c9beebf3f7!3m1!1s2@1:CIHM0ogKEICAgIC9hYnKNA%7C%7C?hl=en-US) — “1★ I've emailed them twice and have not heard back from them yet, they came highly recommended,” - Google rating of 3.4 stars from 5 ratings _(confidence: medium)_ - [Google](https://www.google.com/maps/search/?api=1&query=Environmental%20Engineering%20Inc&query_place_id=ChIJh37Kblx06IkR9_PrvsnmTbQ) — “Google: 3.4★ from 5 ratings” - Better Business Bureau grade of A+ _(confidence: medium)_ - [Better Business Bureau](https://www.bbb.org/us/ct/milford/profile/heating-and-air-conditioning/environmental-engineering-inc-0111-87061254) — “Better Business Bureau grade: A+” - It holds an active Connecticut S1 heating and cooling contractor licence, HTG.0302901-S1, under Environmental Engineering. _(confidence: high)_ - [State License Registry](https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx) — “CT hvac license HTG.0302901-S1 registry-verified active — registry holder of record: ENVIRONMENTAL ENGINEERING” - Specializes in HVAC / Heating & Cooling _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURHbzdhUDlnRRAB!2m1!1s0x0:0xb44de6c9beebf3f7!3m1!1s2@1:CIHM0ogKEICAgIDGo7aP9gE%7C%7C?hl=en-US) — “5★ These people are top notch commercial grade HVAC company. I have also used them for plumbing. Both divisions are quite professional and o…” - [Official Website](https://www.eei-hvac.com) — “About (self-reported, verbatim): Environmental Engineering, Incorporated is a heating, ventilating and air conditioning engineering and cont…” - Also offers Plumbing _(confidence: low)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURHbzdhUDlnRRAB!2m1!1s0x0:0xb44de6c9beebf3f7!3m1!1s2@1:CIHM0ogKEICAgIDGo7aP9gE%7C%7C?hl=en-US) — “5★ These people are top notch commercial grade HVAC company. I have also used them for plumbing. Both divisions are quite professional and o…” ## License Status: **active** (#HTG.0302901-S1, hvac) — verified against the official CT state registry on 2026-10-19, never self-reported. Re-check at the official registry: https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx ## Sources - [Reddit](https://www.reddit.com/r/ChemicalEngineering/comments/z16bfn/environmental_leaning_coops/): 0 community mentions discussing this business - [Google](https://www.google.com/maps/search/?api=1&query=Environmental%20Engineering%20Inc&query_place_id=ChIJh37Kblx06IkR9_PrvsnmTbQ): 3.4★ from 5 ratings - [Google Reviews](https://www.google.com/maps/search/?api=1&query=Environmental%20Engineering%20Inc&query_place_id=ChIJh37Kblx06IkR9_PrvsnmTbQ): Listed on this source - [Better Business Bureau](https://www.bbb.org/us/ct/milford/profile/heating-and-air-conditioning/environmental-engineering-inc-0111-87061254): Listed on this source - [Official Website](https://www.eei-hvac.com): 57 yrs in business · Self-reported profile and service details - [Local News](https://blog.utc.edu/news/2026/10/utc-environmental-engineering-program-prepares-students-to-address-water-waste-and-infrastructure-challenges/): Listed on this source ## Recent reviews - **5/5 · Google Reviews · Brandon Greene · 2026-06-19**: These guys are excellent! I am a facility manager for an assisted living community, I've worked with EEI for several years now. From Preventative Maintenance Services to Major Projects, these folks are outstanding. Punctual, Thorough work. Professional quality and communication! - **1/5 · Google Reviews · John Peter · 2024-12-23**: People answering the phone are very rude. I was hung up on the phone 3 times and the last time on hold for over 5 mins. - **1/5 · Google Reviews · colin asby · 2024-03-07**: I've emailed them twice and have not heard back from them yet, they came highly recommended, - **5/5 · Google Reviews · Keith · 2021-12-08**: These people are top notch commercial grade HVAC company. I have also used them for plumbing. Both divisions are quite professional and on the money when it's accuracy you need. --- Data freshness: last scanned 2026-10-13T07:48:01.074Z. Cite as: Environmental Engineering Inc — Tavlee (https://tavlee.com/contractor/environmental-engineering-inc-milford) Source: https://tavlee.com/contractor/environmental-engineering-inc-milford ## Sitemap [Full site index](https://tavlee.com/sitemap.md)