How much does MVHR cost in 2026?

A whole-home MVHR system typically costs £6,450 to £9,450 including VAT to retrofit in a three-bedroom house, or £4,950 to £7,950 when fitted during a new build or full renovation. This guide explains what drives the price and what running and servicing cost.

What does the MVHR price include?

A quote should cover design, the unit, ducting and valves, condensate drain, electrical connection, making good and commissioning. Design and commissioning are often left out of cheap quotes, and commissioning is what proves the system works.

Why does retrofit cost more than new build?

In a new build the ducts go in before plasterboard. In an occupied home they have to be routed through the loft, cupboards and boxing, which takes longer and needs more making good.

What does MVHR cost to run and service?

Running costs depend on the fan power and speed, but modern units use little electricity on normal speed. Filters need changing every 6 to 12 months and a full service once a year typically costs £145 to £245 including VAT.

Is VAT charged on MVHR?

Yes, in most cases. Ventilation is not on HMRC's list of energy-saving materials that qualify for the zero rate, so standard-rate VAT usually applies to MVHR in existing homes; new-build work can be treated differently.

How can I keep the cost down?

Fit MVHR when ceilings are already coming down, choose radial semi-rigid ducting for easier routes, and make sure the house is airtight enough to benefit. In a draughty house, PIV with good extract fans may give most of the benefit for much less.

Sources

• MyJobQuote, MVHR installation cost (Oct 2026)
• Checkatrade, MVHR cost guide
• HMRC Notice 708/6, energy-saving materials

Related services

MVHR installation

Whole-home heat recovery ventilation, designed room by room and airflow-tested at handover.

From £4,450 inc VAT per home

MVHR servicing and filter changes

Annual service, filters, heat exchanger clean and a measured airflow check for existing MVHR.

From £145 inc VAT per visit