# Carbon Crystal LTD

Carbon Crystal LTD is an hvac contractor in Markham. Rated 5.0/5 from 10 public reviews across 1 review source. This is the MyTrustedTraders public-evidence profile for this contractor, with independent reviews, credentials and registry data from named public sources, no ads, and no paid placement.

Trust Score: 37 out of 100 (building a public record). The score rests on rated 5.0 from 10 reviews.

## About
retail Shop advise and renovation home extension home renovation home office renovation

## Public review evidence (by source)
| Source | Average rating | Reviews |
| --- | --- | --- |
| HomeStars | 5.0/5 | 10 |

Rated 5.0, in line with the local average for hvac contractors in Markham. Across 38 hvac contractors in Markham, the typical rating is 5.0 out of 5. We compare against the same businesses a homeowner would find searching for this trade locally.

Most recent review: 4 months ago.

## What customers consistently praise
_Themes mentioned across this contractor's own public reviews:_
- Friendly & polite (mentioned in 40% of reviews we've read)
- Professional (mentioned in 40% of reviews we've read)

## In customers' own words
_Verbatim quotes from this contractor's public reviews, each attributed to its source:_
> "Prompt, professional, and courteous. We love the work Carbon did for us installing our IKEA kitchenette and pantry cupboards and drawers. A very professional look and a lot of compliments from our friends."
> Source: HomeStars User (5.0, via HomeStars)

> "Carbon and his team were very pleasant to work with. The best price too. My bathroom looks great. Happy with the outcome."
> Source: Anonymous (5.0, via HomeStars)

> "To qualify for insurance renewal, the front porch had to be sloped away from the wall, and the basement behind the wall needed to be waterproofed and insulated; the drywall ceiling and wood panel wall needed to be replaced due to moisture intrusion. Over a month, Carbon’s crew removed interlock stone, poured new cement and waterproofed, leak tested before re-mortaring the interlock. Then, removed the water damaged drywall, paneling, waterproofing and wood before replacing, taping, sanding and painting. Now waiting for quote/scheduling on second drywall repair job on main floor ceiling."
> Source: Anonymous (5.0, via HomeStars)

## Trades
HVAC contractor, Bathroom Fitter, Carpenter, Concrete contractor, General Contractors, Handyman, Interior designer, Kitchen Fitter, Plumber, Tiler, Window / door fitter

## What we checked, and when
_What MyTrustedTraders independently checked for this business (verified items only):_
- Review volume: MyTrustedTraders shows 10 public reviews on this profile. (via MyTrustedTraders public listing)
- Public listing spread: MyTrustedTraders shows 1 public listing for this contractor. (via MyTrustedTraders public listing)
- Business identity: MyTrustedTraders shows public business identity data with operating status unknown. (via MyTrustedTraders public listing)

Full verification checklist: https://ca.mytrustedtraders.com/traders/carbon-crystal-ltd/checks

## Credentials & sources
- Credentials shown: 0
- Corporate registry status: Unknown
- Evidence held from: HomeStars
- Public evidence last checked May 2026

## Before you hire an HVAC contractor
_What to check when choosing this kind of trade (general guidance, not a claim about this business):_
- Trade licensing in Canada is set by each province or territory. Electrical, gas and plumbing are licensed trades almost everywhere (for example ESA for electrical and TSSA for gas in Ontario), so check your provincial regulator that the contractor is certified for the work before you hire.
- A construction lien is a real risk: in every province an unpaid subcontractor or supplier can register a lien against your home even if you already paid the main contractor. Hold back the statutory amount (commonly around 10%) and get signed lien waivers as you pay.
- Confirm they cover your area and can actually come out in your timeframe before anything else.
- Read recent reviews for reliability and turning up on time, not only the quality of the work.
- Agree the call-out fee up front, and be wary of large upfront deposits for an emergency job.

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Source: MyTrustedTraders, https://ca.mytrustedtraders.com/traders/carbon-crystal-ltd
Real public evidence only: every figure traces to its named source. The evidence for this business comes from a single public source, so it is not yet cross-checked against a second. If a source does not carry a field, it is not shown.