MVHR installation in County Londonderry

We survey County Londonderry homes for MVHR before quoting, because the duct routes decide the price more than the unit does.

Across County Londonderry the job is priced the same way wherever you are: what is fitted, how long it takes and how far we travel. Towns we cover include Limavady, Derry and Coleraine.

MVHR in County Londonderry at a glance

Area: County Londonderry, Northern Ireland
Towns listed: 3, largest Derry
Postcode districts: BT52, BT55, BT49, BT47 and BT48
Price region: Northern Ireland
Survey: By arrangement, travel quoted first

How we do it

A single unit, usually in the loft, a utility cupboard or a garage, runs all the time at a low, quiet speed. Insulated ducts carry extract air from the wet rooms and supply air to the habitable rooms. Inside the unit the two airflows pass each other across a heat exchanger without mixing, so the incoming fresh air picks up heat from the outgoing air.

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.

New build or full renovation

Ducts go in at first fix before plasterboard, which is the cheapest and neatest time to fit MVHR.

Radial semi-rigid ducting

One small duct per valve from a manifold. Quieter and easier to balance than branched rigid duct in most homes.

Guide prices in County Londonderry

MVHR installation guide prices in County Londonderry
Work	Guide price
Whole-home MVHR retrofit, 1 to 2 bedroom flat (per home)	£4,100–£6,400 inc VAT
Whole-home MVHR retrofit, 3 bedroom house (per home)	£5,950–£8,700 inc VAT
Whole-home MVHR retrofit, 4 to 5 bedroom house (per home)	£8,250–£12,850 inc VAT
MVHR in a new build or full renovation (fitted at first fix), 3 to 4 bedrooms (per home)	£4,550–£7,300 inc VAT

Northern Ireland rates shown. Prices include VAT at 20%. The fixed price is confirmed in writing after we have seen the job. Travel is quoted separately for this area.

Common reasons people call

Pollen or traffic pollution you want filtered out
Condensation on windows every morning in winter
Mould coming back in bedrooms or bathrooms after cleaning

Rules in Northern Ireland

In Northern Ireland, ventilation is covered by the Building Regulations (Northern Ireland) and Technical Booklet K. Extract rates follow the Northern Ireland guidance and are measured at handover.

How the job runs

Survey and room schedule
Design and airflow rates
First fix
Second fix and valves
Commission and hand over

Towns we cover in County Londonderry

Questions about MVHR installation in County Londonderry

Are prices different in County Londonderry?

Our guide prices are adjusted by region. In County Londonderry we use Northern Ireland rates, so whole-home MVHR retrofit, 1 to 2 bedroom flat is typically £4,100 to £6,400 inc VAT per home.

Can MVHR cool the house in summer?

MVHR is not air conditioning, but a summer bypass lets cooler night air in without warming it, which helps take the edge off hot rooms. For real cooling you would need a separate system.

How much does MVHR cost to install?

A typical retrofit costs £6,450 to £9,450 including VAT for a three-bedroom house, and £4,950 to £7,950 when it goes in during a new build or full renovation. Flats start lower and large detached homes cost more because of the duct runs. We give a fixed price after the survey.

Is the survey free in County Londonderry?

Visits here are by arrangement. Because of the ferry or long travel involved, we quote travel separately and in writing before you commit, and we can often combine visits to keep the cost down.

Which rules apply to ventilation in County Londonderry?

In Northern Ireland, ventilation is covered by Technical Booklet K of the Building Regulations (Northern Ireland). Workplaces must be ventilated under the Workplace (Health, Safety and Welfare) Regulations (Northern Ireland) 1993.

Every MVHR job in County Londonderry finishes with a measured commissioning sheet, so you know the system does what it should.