Passivhaus and EnerPHit · Powys
Passivhaus and EnerPHit windows in Builth Wells
Looking at Passivhaus and EnerPHit windows for a home in Builth Wells? We survey, quote and fit across Powys, and the LD2 postcode district is part of that.

The windows and installation detail low-energy builds depend on. Passivhaus is a building standard from the Passive House Institute; EnerPHit is its version for retrofits.
Winter light and glass choice in Builth Wells
On the shortest day, Builth Wells gets about 7 h 43 min of daylight and the midday sun reaches only about 14° above the horizon. Low winter sun means north-facing rooms here gain little solar heat, which is where triple glazing’s lower heat loss helps most.
Guide prices in Builth Wells
| Guide | Supply 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
Wales requires replacement windows to achieve 1.4 W/m²K, or a Window Energy Rating of band B or better, which good triple glazing passes comfortably. 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
After the free survey you get a written quote naming the frame system, the glass build-up and the whole-window U-value for every item. Windows are made to order, then fitted, sealed and made good, one opening at a time.
- Every opening measured, including escape and vent needs
- Frames rated for the weight of triple glass
- Old windows removed and taken away
- Each opening closed up the same day
Questions from Builth Wells
Can you fit to my designer’s details?
Yes. We agree position, fixings and airtightness details with your designer before ordering.
Do Passivhaus windows have to be certified?
Not always, but certified components make the certification process simpler. Ask and we will price certified systems.
Do I need permission for Passivhaus and EnerPHit windows in Builth Wells?
In Wales, householder rules do not cover flats, councils can use Article 4 directions, and listed buildings need consent. Check whether your street is in a conservation area or covered by an Article 4 direction before changing the style.
Do you fit Passivhaus and EnerPHit windows in Builth Wells?
Yes. We arrange surveys and fitting in Builth Wells and across Powys. Send your postcode and the windows or doors you want replaced, and we will book a free survey.
Nearby
Also near Builth Wells: Llandrindod Wells (10 km), Brecon (23 km), Newtown (42 km) and Ebbw Vale (44 km).
Other products in Builth Wells
- uPVC windows
- Aluminium windows
- Timber windows
- Alu-clad timber windows
- Casement windows
- Flush casement windows
- Tilt and turn windows
- Sash windows
- Bay and bow windows
- Fixed and picture windows
- Composite front doors
- French doors
- Sliding patio doors
- Bifold doors
- Glass-only replacement
- Acoustic triple glazing
- Security glazing
- Whole-house replacement
- New builds and self-builds
- Period homes and conservation areas
- Flats and apartments
Passivhaus and EnerPHit in Builth Wells: 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.
