"This project was one of the biggest we have undertaken with Harp and Evolution Windows; it delivered results beyond our expectations. The Harp process was professional and very much like a well-oiled machine. From the site survey onwards, it became clear that the level of technical knowledge, capability and experience was in abundance. The experience got even better at the installation phase when their team effortlessly undertook the removal of windows and installed new ones. Nothing was left to chance; the attention to detail and the quality of the work were exceptional."
H
Public evidence profile
Harp Windows Ltd
Public profile launch summary
Launch summary
Harp Windows LtdVerified windows / doors / conservatories in Watford, Hertfordshire, rated 10/10 from 252 reviews on Checkatrade.
Public review evidenceLast review Review dates not availableSource refresh
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3Visible limitations on this record
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No verified credential shownNo verified endorsements shownUnclaimed on MyTrustedTraders
What customers say
3 highlightsCustomer voice from the public record
"Fantastic job from start to finish. Replace 6 sash windows and install new kitchen window. Fabulous job by the 2 fitters and looks great. Highly recommended."
"Great professional service from initial enquiry up to installation. Ewa, Nicky, Gary, John, Bogdan and Tom were great."
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Review evidence
3Review coverage and highlights
Review depth3
Source platforms2
Loaded sample3
Latest dated review5 Mar 2026
This project was one of the biggest we have undertaken with Harp and Evolution Windows; it delivered results beyond our expectations. The Harp process was professional and very much like a well-oiled machine. From the site survey onwards, it became clear that the level of technical knowledge, capability and experience was in abundance. The experience got even better at the installation phase when their team effortlessly undertook the removal of windows and installed new ones. Nothing was left to chance; the attention to detail and the quality of the work were exceptional.
Fantastic job from start to finish. Replace 6 sash windows and install new kitchen window. Fabulous job by the 2 fitters and looks great. Highly recommended.
Great professional service from initial enquiry up to installation. Ewa, Nicky, Gary, John, Bogdan and Tom were great.
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Public review evidenceLast review Review dates not availableCheckatrade
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Reviews
3 totalCustomer review evidence
Source-refresh labels elsewhere show when MTT last checked the record.
This project was one of the biggest we have undertaken with Harp and Evolution Windows; it delivered results beyond our expectations. The Harp process was professional and very much like a well-oiled machine. From the site survey onwards, it became clear that the level of technical knowledge, capability and experience was in abundance. The experience got even better at the installation phase when their team effortlessly undertook the removal of windows and installed new ones. Nothing was left to chance; the attention to detail and the quality of the work were exceptional.
Fantastic job from start to finish. Replace 6 sash windows and install new kitchen window. Fabulous job by the 2 fitters and looks great. Highly recommended.
Great professional service from initial enquiry up to installation. Ewa, Nicky, Gary, John, Bogdan and Tom were great.
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