Carmarthen, Dyfed
MVHR installation in Carmarthen
Whole-home heat recovery ventilation, designed room by room and airflow-tested at handover. Covering Carmarthen and SA31 and SA33.
- From £4,225 inc VAT per home
- Free survey
MVHR often makes sense in Carmarthen homes that have recently been insulated, re-windowed or made more airtight.
Whether the property is in the middle of Carmarthen 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 Carmarthen at a glance
- Town
- Carmarthen, Dyfed
- Postcode districts
- SA31 and SA33
- Nearby
- Llanelli (14 miles), Ammanford (14 miles) and Gorseinon (17 miles)
- Price region
- Wales
- Survey
- Free survey (UK mainland)
How we approach MVHR in Carmarthen
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.
Guide prices in Carmarthen
| Work | Guide price |
|---|---|
| Whole-home MVHR retrofit, 1 to 2 bedroom flat (per home) | £4,225–£6,600 inc VAT |
| Whole-home MVHR retrofit, 3 bedroom house (per home) | £6,150–£9,000 inc VAT |
| Whole-home MVHR retrofit, 4 to 5 bedroom house (per home) | £8,500–£13,250 inc VAT |
These ranges use our Wales rates. Prices include VAT at 20%. You get a fixed written price before any work is booked.
When to get it looked at
- A new build or extension where the SAP or building control needs a ventilation system
- Stale air or cooking smells that hang around
- Pollen or traffic pollution you want filtered out
Rules that apply in Wales
Wales has its own Part F ventilation guidance, published by the Welsh Government, and work is checked by building control. Extract rates and commissioning are checked against the Welsh guidance on every job.
Questions from Carmarthen
What is the price of MVHR in Carmarthen?
Guide prices for Carmarthen use Wales rates: whole-home MVHR retrofit, 1 to 2 bedroom flat is typically £4,225 to £6,600 inc VAT per home. We confirm a fixed price in writing before any work starts.
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 Carmarthen?
For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.
How do I get a price for MVHR in Carmarthen?
Use the guide price tool, the form on this page, live chat, WhatsApp or call 0800 088 6341. A postcode and a couple of photos help us give you a useful answer first time.
Book a free survey in Carmarthen and we will tell you honestly whether MVHR or something simpler suits the house.
MVHR near Carmarthen
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