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Public evidence profile · Checked May 2026

Carbon Crystal LTD

HVAC contractorMarkham5.010 reviews · 1 independent public source
Trust Score
37out of 100
Building a public record
  • Rated 5.0 from 10 reviews
  • Reviewed 4 months ago
How this score is worked out
Rating5.0 / 5
Review volumeLow · 10
Independent sources1 independent public source
CredentialsNo credentials shown yet

How this score is made up

What customers say26.9 of 64.9
Independent checks0 of 20.3
Track record9.9 of 14.9
See the independent checks
  • Ways to reach them0 of 16.2
  • Photos of their work0 of 2.7
  • Industry recognition0 of 1.4

Missing evidence lowers the score because we can't check it. It doesn't mean it doesn't exist. Claiming a profile never changes the score. Evidence context, not a guarantee of workmanship.

Contact on HomeStars (opens in new tab)
Reviews · public evidence

What customers say

These reviews are published independently on the named public source below, not testimonials this business chose to show. We bring them together and link each one back to where it appeared, so you can open the source and read it yourself.

5.0out of 5
10 reviews in public evidenceReviewed on public review sources since 2021Most recent review
Customers often mention
  • Friendly & politeMentioned in 40% of reviews we've read
  • ProfessionalMentioned in 40% of reviews we've read
Where these reviews are published
  • HomeStars10 reviews · 5.0 avg

Detailed reviews

These are the individual reviews we hold for Carbon Crystal LTD, including the highlights above. The 10 headline total is the review volume reported across public review sources.

HomeStars User5.0 / 5 ·

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.

Anonymous5.0 / 5 ·

Carbon and his team were very pleasant to work with. The best price too. My bathroom looks great. Happy with the outcome.

Anonymous5.0 / 5 ·

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.

Anonymous5.0 / 5 ·

The project manager is very knowledgeable. He look after very details of the renovation. I am worry free during the whole process. Well done!

Anonymous5.0 / 5 ·

We love our newly renovated house. It was very well priced. From the planning stages to the completion of the project. Carbon and his team worked in a timely and satisfactory manner. While the project was ongoing, Carbon was on-site answered all of our questions and concerns. We are happy with the finished product. A heartfelt thanks to Carbon and his team.

Local context

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.

Sources

Where this information comes from

1 named public source

Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.

Review sources

Public evidence last checked May 2026

About

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

Your own checks

What to check before you hire

Worth checking yourself
Only a few public reviews are shown. Ask for recent references you can contact.
Their public evidence comes from a single source. Look them up on another site before deciding.
No credentials are shown here and the business has not claimed this profile. Ask to see certificates and insurance directly.
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.

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Good to know

Common questions about Carbon Crystal LTD

Is Carbon Crystal LTD a legitimate business?

Carbon Crystal LTD has 10 independent public reviews, rated 5 out of 5. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.

What do customers say about Carbon Crystal LTD?

Carbon Crystal LTD has 10 public reviews, averaging 5 out of 5. You can read the individual reviews and where each came from in the reviews section above.

How do I know Carbon Crystal LTD's reviews are genuine?

Carbon Crystal LTD's 10 public reviews come from a named public review source, and MyTrustedTraders links every one back to where it was published, so you can open the source and read them yourself rather than trusting a single curated page. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show where every review came from rather than selling rankings, so you can weigh the evidence for yourself.

Compare your options

More HVAC contractors in Markham

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