About COYFIELD
Ventilation engineers, not just installers
We're a UK ductwork and MVHR specialist for the construction sector — combining design rigour with directly-employed delivery teams to give developers a single point of accountability.
Our story
Built around quality you can document
COYFIELD was founded on a simple frustration: ventilation was too often the last thing coordinated and the first thing value-engineered badly. We set out to do it properly — design first, fabricate with traceability, install with accredited teams, and prove performance with testing.
Today we deliver premium ductwork and MVHR for residential, build-to-rent, commercial, healthcare and mixed-use schemes across the UK. Whatever the sector, the commitment is the same: a tailored, value-engineered system, delivered on programme and signed off with documented QA.
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Years on UK sites
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Tonnes of duct installed
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Repeat-client work
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Avg. duct leakage rate
What we stand for
Three commitments behind every project
Design-led delivery
Engineering rigour before site work. We design for performance, buildability and the running cost your client will live with for decades.
QA/QC first
Traceable materials, photographic records and independent leakage testing. Quality is documented, not assumed.
Tailored to the project
No off-the-shelf packages. Every scheme is value-engineered around its building, programme and budget.
Sectors
Where our ductwork goes
Repeatable quality across the building types that demand reliable, low-energy ventilation.
Standards & accreditations
Quality, documented
We work to recognised UK standards. Accreditation marks shown are indicative placeholders for this demo and will be confirmed with live certification.
ISO 9001
ISO 14001
BESA Member
SafeContractor
CHAS
Constructionline