Passivhaus and EnerPHit · England
Passivhaus and EnerPHit windows in Bristol
We survey and fit Passivhaus and EnerPHit windows across Bristol, with a free survey and a written quote fixed for the specification.
Certified-component systems on request, with data for PHPP. Passivhaus is a building standard from the Passive House Institute; EnerPHit is its version for retrofits.
Guide prices across Bristol
uPVC low-energy window
medium, deep frame, Uw about 0.8 or better
£1,395 – £1,795inc VAT · £1,160 – £1,495 ex VAT
- Deep multi-chamber frame
- Airtightness tapes and insulated fixing
- Installation details recorded
Timber low-energy window
medium, thermally broken
£2,395 – £2,995inc VAT · £1,995 – £2,495 ex VAT
- Engineered timber, deep section
- Airtightness tapes and insulated fixing
- Installation details recorded
Alu-clad timber low-energy window
medium, certified-component systems on request
£2,695 – £3,395inc VAT · £2,245 – £2,830 ex VAT
- Timber inside, aluminium outside
- Airtightness tapes and insulated fixing
- Installation details recorded
Guide prices, supply and fit. The written quote after your survey fixes the price for the specification shown; anything extra is agreed with you first.
Rules in England
England 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. Replacement windows are a controlled fitting. A competent person scheme installer (such as FENSA or Certass) self-certifies the work and notifies the council within 30 days; otherwise a building control body approves it.
Planning: Replacing windows on a house is normally permitted development if the new ones look similar. New upper-floor windows in a side wall must be obscure glazed and fixed, or open only above 1.7 m. Flats and maisonettes have no householder permitted development rights, so a change that alters their appearance needs planning permission. An Article 4 direction in a conservation area may mean permission is needed, and listed buildings need listed building consent.
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.
- Free survey and a written quote fixed for the specification
- Glass build-up and whole-window U-value on every quote
- Written handover pack at the end of the job
- Guarantees on frames, units and fitting in writing
Questions
Do Passivhaus windows have to be certified?
Not always, but certified components make the certification process simpler. Ask and we will price certified systems.
Is triple glazing enough for Passivhaus?
Triple glass is the starting point. The frame, spacers and installation all have to perform too.
Can you fit to my designer’s details?
Yes. We agree position, fixings and airtightness details with your designer before ordering.
Do you cover all of Bristol?
We arrange surveys and fitting across Bristol.
Do I need permission for Passivhaus and EnerPHit windows in England?
In England, like-for-like replacements on a house are normally permitted development; flats need permission if the change alters their appearance, Article 4 areas may need permission, and listed buildings need listed building consent.
Passivhaus and EnerPHit in nearby areas of England
Other products in Bristol
- 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 across Bristol
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 England.