KMC Windows
Trust score
79out of 100
Rating4.9★
Review volume45
Source diversity2 sources
VerificationListed
Based on rating, review volume, independent sources and verification. Evidence context — not a guarantee of workmanship.
About
KMC Windows** is family-run window & door company located in Hemel Hempstead, Hertfordshire with over 20 years of experience in the trade. We cover the...
Reviews · public evidence
What customers say
4.9out of 5
Highlights
"We found KMC windows via a recommendation from a friend, I was looking for a few weeks to find a good installer I felt I could trust. The team at KMC were clear and transparent throughout the process. They came out discussed what I was looking for and provided a very simple quote. They were reasonably priced compared to some quotes I had been given, and kept things simple. We spoke via phone and email and their responses were quick and clear. A date was agreed the installer turned up on time, was very tidy, cleaned up as he went and worked throughout delivering to a very high standard. Really happy with the work they did. The knackered old windows being replaced has made a great difference throughout the house. Very happy, no surprises, no issues."
"Kmc windows were fantastic!! So clean and tidy.very polite and curtious. Lovely guys . So pleased with the work.. would highly recommend!!"
"Both my patio doors would not open or close properly Kristian came out fixed the problem and both doors open and close like new would highly recommend this company for workmanship and value for money"
Detailed reviews
We found KMC windows via a recommendation from a friend, I was looking for a few weeks to find a good installer I felt I could trust. The team at KMC were clear and transparent throughout the process. They came out discussed what I was looking for and provided a very simple quote. They were reasonably priced compared to some quotes I had been given, and kept things simple. We spoke via phone and email and their responses were quick and clear. A date was agreed the installer turned up on time, was very tidy, cleaned up as he went and worked throughout delivering to a very high standard. Really happy with the work they did. The knackered old windows being replaced has made a great difference throughout the house. Very happy, no surprises, no issues.
Kmc windows were fantastic!! So clean and tidy.very polite and curtious. Lovely guys . So pleased with the work.. would highly recommend!!
Both my patio doors would not open or close properly Kristian came out fixed the problem and both doors open and close like new would highly recommend this company for workmanship and value for money
This is the second time I have used KMC. I first used them in 2018. This time we had a new build project for two houses and KMC provided all the windows and doors throughout. Dealing with them from start to finish was a very smooth process. We are very happy with the products and service KMC provided. The team are friendly and very experienced, We would 100% recommend them.
Page 1 of 3
Public evidence checks
Public evidence shownTrust checks and red flags
Public review evidence4.9★ from 45 public reviewsAcross TrustATraderTrustATraderWebsite
Sources
2 named sourcesEvery signal, traced to its origin
Review sources
Official sources
Public evidence checks
What's strong, and what to check yourself
✓Strong signals
✓Rating: 4.9★
✓Review volume: 45
✓Source diversity: 2 sources
!Worth checking yourself
!Verification: Listed
Public evidence last checked May 2026
Good to know
Common questions about KMC Windows
What do customers say about KMC Windows?
KMC Windows has 45 public reviews, averaging 4.9 out of 5, gathered across 2 independent sources. You can read the individual reviews and where each came from in the reviews section above.
How do I know KMC Windows's reviews are genuine?
KMC Windows's 45 public reviews are gathered and cross-checked across 2 independent public sources. Reviews spread across several named sources are harder to fake than a single polished 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.
Want an extra legitimacy check?
Run the Cowboy Checker on KMC Windows before you contact them.