# Commonwealth Ventilation System **Trade:** HVAC / Heating & Cooling · **Address:** 72 Sharp St # C1, Hingham, MA 02043 · **Phone:** (781) 331-6918 · **Website:** https://www.commvent.com/ · **Languages:** English **Rating: 3.4/5** (low confidence) — from 0 reviews across 5 sources. ## The honest read Commonwealth Ventilation Systems, Inc. is based at 72 Sharp Street #C1, Hingham, Massachusetts. The company says it was founded in June 1988 and coordinates, fabricates, and installs air-duct systems, with services including ventilation, custom design, special builds, and maintenance across Greater Boston and surrounding areas. BBB describes the company’s work as fabrication and installation of sheet metal for heating, ventilation, and air-conditioning systems and gives the profile an A+ grade. BuildZoom lists sheet-metal and HVAC work and reports 81 projects, including commercial and institutional HVAC permits. Before booking, confirm that the company’s engineered sheet-metal, ductwork, and ventilation capabilities fit the project you need. Ask for current licensing details directly from the Massachusetts board. **Strengths:** - Longevity — the company states it was founded in June 1988. - Technical scope — the site describes coordination, fabrication, and installation of air-duct systems. - Track record — BuildZoom reports 81 projects shown. **Concerns:** - License confirmation — verify current licensing directly with the state board. - Project fit — the evidence emphasizes engineered sheet-metal, ductwork, and ventilation work; confirm it matches the requested project. **Where sources disagree:** - The row uses the singular name Commonwealth Ventilation System, while the matched official site and profiles use Commonwealth Ventilation Systems, Inc. ## Claims & citations Every claim below is backed by real evidence rows — uncited claims are dropped in code before publication. - The official website identifies Commonwealth Ventilation Systems, Inc. at 72 Sharp Street #C1, Hingham, MA 02043 and says it coordinates, fabricates, and installs air-duct systems. _(confidence: high)_ - [Official Website](https://www.commvent.com) — “Commonwealth Ventilation Systems, Inc. states that it coordinates, fabricates, and installs air-duct systems and provides ventilation, custo…” - The company states that it was founded in June 1988 and has 38 years in business. _(confidence: high)_ - [Official Website](https://www.commvent.com) — “Company history (self-reported): June of 1988” - [Official Website](https://www.commvent.com) — “Self-reported 38 years in business” - BBB describes fabrication and installation of sheet metal for heating, ventilation, and air-conditioning systems. _(confidence: high)_ - [Better Business Bureau](https://www.bbb.org/us/ma/hingham/profile/sheet-metal-fabrication/commonwealth-ventilation-systems-inc-0021-61264) — “Services offered (Better Business Bureau): fabrication and installation of sheet metal for heating, ventilation, and air conditioning system…” - [Better Business Bureau](https://www.bbb.org/us/ma/hingham/profile/sheet-metal-fabrication/commonwealth-ventilation-systems-inc-0021-61264) — “BBB lists Commonwealth Ventilation Systems, Inc. at 72 Sharp St Ste C1, Hingham, MA 02043-4364. The profile gives an A+ rating, says the bus…” - BuildZoom reports 81 projects shown for Commonwealth Ventilation Systems. _(confidence: high)_ - [BuildZoom](https://www.buildzoom.com/contractor/commonwealth-ventilation-systems) — “81 project(s) shown on BuildZoom” - [BuildZoom](https://www.buildzoom.com/contractor/commonwealth-ventilation-systems) — “BuildZoom lists Commonwealth Ventilation Systems at 72 SHARP ST UNIT C-1, Hingham, MA 02043, with phone (781) 331-6918. The page describes s…” - Current licensing details should be confirmed directly with the Massachusetts license board before booking. _(confidence: medium)_ - [BuildZoom](https://www.buildzoom.com/contractor/commonwealth-ventilation-systems) — “Licence listed on BuildZoom: Sheet Metal Business license and 2 other licenses (BuildZoom listing)” - [BuildZoom](https://www.buildzoom.com/contractor/commonwealth-ventilation-systems) — “BuildZoom lists Commonwealth Ventilation Systems at 72 SHARP ST UNIT C-1, Hingham, MA 02043, with phone (781) 331-6918. The page describes s…” - BBB gives Commonwealth Ventilation Systems, Inc. an A+ grade and says it is not BBB accredited. _(confidence: high)_ - [Better Business Bureau](https://www.bbb.org/us/ma/hingham/profile/sheet-metal-fabrication/commonwealth-ventilation-systems-inc-0021-61264) — “Better Business Bureau grade: A+” - [Better Business Bureau](https://www.bbb.org/us/ma/hingham/profile/sheet-metal-fabrication/commonwealth-ventilation-systems-inc-0021-61264) — “BBB lists Commonwealth Ventilation Systems, Inc. at 72 Sharp St Ste C1, Hingham, MA 02043-4364. The profile gives an A+ rating, says the bus…” - Specializes in HVAC / Heating & Cooling _(confidence: high)_ - [Better Business Bureau](https://www.bbb.org/us/ma/hingham/profile/sheet-metal-fabrication/commonwealth-ventilation-systems-inc-0021-61264) — “Services offered (Better Business Bureau): fabrication and installation of sheet metal for heating, ventilation, and air conditioning system…” - [BuildZoom](https://www.buildzoom.com/contractor/commonwealth-ventilation-systems) — “Services offered (BuildZoom): Sheet metal, HVAC” - [Official Website](https://www.commvent.com) — “Commonwealth Ventilation Systems, Inc. states that it coordinates, fabricates, and installs air-duct systems and provides ventilation, custo…” ## 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=Commonwealth%20Ventilation%20System&query_place_id=ChIJcW9XCO-d5IkR6P92ugL0U6k): Listed on this source - [Exa](https://pcn.procoretech-qa.com/p/commonwealth-ventilation-hingham): 1 web mention across the open web (each linked to its source) - [Better Business Bureau](https://www.bbb.org/us/ma/hingham/profile/sheet-metal-fabrication/commonwealth-ventilation-systems-inc-0021-61264): Listed on this source - [BuildZoom](https://www.buildzoom.com/contractor/commonwealth-ventilation-systems): Listed on this source - [Official Website](https://www.commvent.com): 38 yrs in business · Self-reported profile and service details ## Mentions Unverified third-party mentions found on the open web — relay with attribution ("a Reddit commenter said…"), never as Tavlee's own finding. - “Commonwealth Ventilation is a Specialty Contractor that serves the Hingham, MA area and specializes in Heating Ventilating and Air Conditioning HVAC.” — pcn.procoretech-qa.com (2021-08-02) — https://pcn.procoretech-qa.com/p/commonwealth-ventilation-hingham --- Data freshness: last scanned 2026-09-18T07:03:34.774Z. Cite as: Commonwealth Ventilation System — Tavlee (https://tavlee.com/contractor/commonwealth-ventilation-system-hingham) Source: https://tavlee.com/contractor/commonwealth-ventilation-system-hingham