Welwyn Garden City, Hertfordshire
MVHR installation in Welwyn Garden City
Whole-home heat recovery ventilation, designed room by room and airflow-tested at handover. Covering Welwyn Garden City and AL6, AL7 and AL8.
- From £4,675 inc VAT per home
- Free survey

If you are making a Welwyn Garden City house warmer and tighter, MVHR keeps the air fresh without throwing the heat away.
Whether the property is in the middle of Welwyn Garden City or one of the villages around it, the process is the same: a look at the building, a written price, then fitting and testing on the agreed day.
MVHR in Welwyn Garden City at a glance
- Town
- Welwyn Garden City, Hertfordshire
- Postcode districts
- AL6, AL7 and AL8
- Nearby
- Hatfield (3 miles), Codicote (4 miles) and Hertford (6 miles)
- Price region
- East of England
- Survey
- Free survey (UK mainland)
MVHR for Welwyn Garden City homes
Filters on both sides keep pollen and dust out of the house and keep the exchanger clean. MVHR works best in a home that is reasonably airtight: a new build, a deep retrofit with insulation and new windows, or a renovation where ceilings are coming down anyway.
Summer bypass and boost controls
Bypass lets cooler night air in without heat recovery; humidity or switch boost for showers and cooking.
Retrofit in an occupied home
Ducts routed through the loft and down through cupboards or boxed corners. Most semis are done in 3 to 5 days.
Guide prices in Welwyn Garden City
| Work | Guide price |
|---|---|
| Whole-home MVHR retrofit, 1 to 2 bedroom flat (per home) | £4,675–£7,300 inc VAT |
| Whole-home MVHR retrofit, 3 bedroom house (per home) | £6,750–£9,900 inc VAT |
| Whole-home MVHR retrofit, 4 to 5 bedroom house (per home) | £9,400–£14,650 inc VAT |
East of England rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job.
Signs it is time to call us
- Stale air or cooking smells that hang around
- Pollen or traffic pollution you want filtered out
- Condensation on windows every morning in winter
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Welwyn Garden City
What area around Welwyn Garden City do you work in?
All of Hertfordshire. Near Welwyn Garden City that includes Hatfield, Codicote, Hertford and St Albans.
Do I keep my trickle vents with MVHR?
No. Under Approved Document F, background ventilators should not be installed with a whole-home MVHR system, so we advise closing or removing them once the system is commissioned.
How often does MVHR need servicing?
Filters usually need changing every 6 to 12 months, and a full service with a clean and airflow check once a year keeps the system efficient. Clogged filters are the most common reason MVHR stops working properly.
Do you cover Welwyn Garden City and nearby?
Yes. We cover Welwyn Garden City and nearby places including Hatfield, Codicote, Hertford and St Albans. Send your postcode and we will confirm.
What is the price of MVHR in Welwyn Garden City?
Guide prices for Welwyn Garden City use East of England rates: whole-home MVHR retrofit, 1 to 2 bedroom flat is typically £4,675 to £7,300 inc VAT per home. We confirm a fixed price in writing before any work starts.
Call or message us with your postcode and the number of bedrooms and we will come back with a guide price for Welwyn Garden City.
MVHR near Welwyn Garden City
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