---
title: "Constant Temperature Systems"
description: "Constant Temperature Systems describes its work as selling, servicing and installing HVAC equipment for residential, commercial and industrial customers, w"
doc_version: "2026-11-03"
last_updated: "2026-11-03"
---

# Constant Temperature Systems

**Trade:** HVAC / Heating & Cooling · **Address:** 13 Alexander Rd, Billerica, MA 01821 · **Phone:** (978) 667-5400 · **Website:** http://www.constanttempinc.com/ · **Languages:** English

**Rating: 2.4/5** (low confidence) — from 1 reviews across 7 sources.

## The honest read

Constant Temperature Systems describes its work as selling, servicing and installing HVAC equipment for residential, commercial and industrial customers, with preventative maintenance contracts available. Constant Temperature Systems Inc holds Massachusetts HVAC license 588-SM-B, active on the state registry.

A 2022 customer said they paid a $10,000 deposit and could not get calls answered.

**Concerns:**
- Unanswered deposit calls — a 2022 customer said calls went unanswered after a $10,000 deposit

## Claims & citations

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

- Constant Temperature Systems describes its work as selling, servicing and installing HVAC equipment for residential, commercial and industrial customers, with preventative maintenance contracts available. _(confidence: high)_
  - [Better Business Bureau](https://www.bbb.org/us/ma/billerica/profile/air-conditioning-contractor/constant-temperature-systems-inc-0021-74118) — “About (Better Business Bureau, self-described): Constant Temperature Systems, Inc., also known as C.T.S., sells, services and installs HVAC …”
- Constant Temperature Systems Inc holds Massachusetts HVAC license 588-SM-B, active on the state registry. _(confidence: high)_
  - [State License Registry](https://occupationallicensingandpermitting.mass.gov/madol/s/license-search-page) — “MA hvac license 588-SM-B registry-verified active — registry holder of record: Constant Temperature Systems Inc”
- A 2022 customer said they paid a $10,000 deposit and could not get calls answered. _(confidence: high)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNCNG9DR3VRRRAB!2m1!1s0x0:0x351f772bf5c4ad3b!3m1!1s2@1:CIHM0ogKEICAgICB4oCGuQE%7C%7C?hl=en) — “1★ Put deposit of 10k , won't answer calls back.  RIP Off artist.  In process of pressing charges”
- Specializes in HVAC / Heating & Cooling _(confidence: high)_
  - [Better Business Bureau](https://www.bbb.org/us/ma/billerica/profile/air-conditioning-contractor/constant-temperature-systems-inc-0021-74118) — “About (Better Business Bureau, self-described): Constant Temperature Systems, Inc., also known as C.T.S., sells, services and installs HVAC …”

## License

Status: **active** (#588-SM-B, hvac) — verified against the official MA state registry on 2026-09-23, never self-reported.
Re-check at the official registry: https://occupationallicensingandpermitting.mass.gov/madol/s/license-search-page

## Sources

- [Google Reviews](https://www.google.com/maps/search/?api=1&query=Constant%20Temperature%20Systems&query_place_id=ChIJA89kekCg44kRO63E9St3HzU): Listed on this source
- [Official Website](http://www.constanttempinc.com): Self-reported profile and service details
- [Exa](https://www.mrcentralheating.co.uk/viessmann-vitodens-200-w-120kw-b2ha-constant-temperature-system-boiler): 0 web mentions across the open web (each linked to its source)
- [Better Business Bureau](https://www.bbb.org/us/ma/billerica/profile/air-conditioning-contractor/constant-temperature-systems-inc-0021-74118): Listed on this source
- [BuildZoom](https://www.buildzoom.com/contractor/constant-temperature-systems-inc): Listed on this source
- [Reddit](https://www.reddit.com/r/thermodynamics/comments/nkxapp/poll_what_is_the_equation_for_the_work_done_by_a/): 0 community mentions discussing this business
- [Google](https://www.google.com/maps/search/?api=1&query=Constant%20Temperature%20Systems&query_place_id=ChIJA89kekCg44kRO63E9St3HzU): 3.0★ from 2 ratings

## Recent reviews

- **1/5 · Google Reviews · Danny Galarza · 2022-12-20**: Put deposit of 10k , won't answer calls back.  RIP Off artist.  In process of pressing charges

---

Data freshness: last scanned 2026-09-23T06:56:59.890Z.
Cite as: Constant Temperature Systems — Tavlee (https://tavlee.com/contractor/constant-temperature-systems-billerica)
Source: https://tavlee.com/contractor/constant-temperature-systems-billerica

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