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Passivhaus and EnerPHit · Dyfed

Passivhaus and EnerPHit windows in Milford Haven

Homes in Milford Haven can have Passivhaus and EnerPHit windows supplied and fitted, with surveys arranged across Dyfed including SA73.

SA73Postcode district
1.4U-value limit, Wales (W/m²K)
7h 47mDaylight, 21 Dec
15°Midday sun, 21 Dec
Timber-clad low-energy house with deep-set windows and external shading

Low-energy triple glazed windows installed to your designer’s details. Passivhaus is a building standard from the Passive House Institute; EnerPHit is its version for retrofits.

Winter light and glass choice in Milford Haven

In Milford Haven, midday sun in late December sits around 15° high, with roughly 7 h 47 min of daylight. For windows facing north or shaded by neighbours, cutting heat loss matters more than solar gain; on open south-facing glass, ask about a higher solar-gain unit.

Guide prices in Milford Haven

GuideSupply and fit, inc VAT
uPVC low-energy window
medium, deep frame, Uw about 0.8 or better
£1,395 – £1,795
Timber low-energy window
medium, thermally broken
£2,395 – £2,995
Alu-clad timber low-energy window
medium, certified-component systems on request
£2,695 – £3,395

Guide prices. Your written quote after the free survey fixes the price for the specification shown.

Rules for Passivhaus and EnerPHit in Wales

The rules for replacement windows in Wales are set by Approved Document L for Wales (2022 edition, with 2024 amendments): 1.4 W/m²K, or a Window Energy Rating of band B or better. As in England, replacement windows are a controlled fitting: a competent person scheme installer self-certifies the work, or building control approves it.

Before ordering: Householder permitted development rules do not cover flats, and councils can remove rights with Article 4 directions. Listed buildings need listed building consent. Check with your council before changing the style or material.

How it works

The surveyor measures every opening, checks ventilation, escape windows and safety-glass zones, and talks through styles. Your written quote lists each item with its glass build-up and U-value, and the price is fixed for that specification.

  • Guide prices published, not hidden
  • No pressure: the quote is yours to keep
  • Frames, glass and fitting in one contract
  • Advice on planning and consents before you order

Questions from Milford Haven

Can you fit to my designer’s details?

Yes. We agree position, fixings and airtightness details with your designer before ordering.

What is EnerPHit?

The Passive House Institute’s standard for retrofitting existing buildings, with slightly relaxed targets compared with new Passivhaus builds.

How long does it take to get Passivhaus and EnerPHit windows fitted in Milford Haven?

After the survey, typical manufacture time is 8 to 14 weeks, and most homes are fitted in 1 to 4 days.

Do you fit Passivhaus and EnerPHit windows in Milford Haven?

Yes. We arrange surveys and fitting in Milford Haven and across Dyfed. Send your postcode and the windows or doors you want replaced, and we will book a free survey.

Nearby

Nearby towns on our list include Pembroke Dock (7 km), Haverfordwest (11 km), Tenby (23 km) and Carmarthen (53 km).

Other products in Milford Haven

Passivhaus and EnerPHit in Milford Haven: book your free survey

Written quote fixed for the specification, after a free survey. Building Regulations sign-off by a competent person scheme installer or building control, as the law requires in Wales.

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