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WHAT REGULATION

CHANGES ARE COMING?

PART L

FUTURE HOMES STANDARD

GAS BOILER BAN

CHANGES TO PART L 2021

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Intended as an interim uplift towards the Future Homes Standard, changes to Part L will "support industry to prepare and position itself to build to the full standard: ensuring a sufficient supply of low carbon heating and an appropriately-skilled workforce is in place; and that our housing supply commitments can still be met".

MHCLG expect a 31% reduction in carbon emissions for new build properties in comparison to the 2013 standard.

Key changes include:

  • Low temperature heating systems (designed for 55°C flow temp)

  • Good fabric performance
    Window - 1.2
    Wall - 1.0
    Door - 0.18
    Roof - 0.11
    Floor - 0.13
    Air permeability 5.0m3/(h*m2)

  • Possible requirement for space for domestic hot water cylinders to future proof properties

 

FUTURE HOMES STANDARD

The Future Homes Standard (FHS) is driven by a legally binding target to become 'zero carbon' by 2050. Part L and the FHS pick up the domestic heating part of this target.

The FHS centres on future-proofing new build homes so that they are 'zero carbon ready' by 2025. Decarbonisation of electricity is happening at a much faster rate than originally anticipated, so electrification of heat needs a big push.

Dr Gavin Dunn of the Chartered Association of Building Engineers recently stated on a webinar that "heat pumps are the most cost-effective route through the new regulations"

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GAS BOILER BAN

The gas boiler ban was announced by former Chancellor Philip Hammond in 2019 and was reaffirmed by Boris Johnson as part of the Future Homes Standard for 2025. It is not yet signed into law but is making its way through parliament. 

The ban will only apply to new build properties from 2025, though it is expected that a full ban (including retrofits) will come into force closer to 2050.

DEC 2021

Interim Part L released

JUN 2022

Compliance to interim

Part L required

SPRING 2023

AUTUMN 2021 - SUMMER 2022

Develop technical specification

SUMMER 2022 - 

2024

Embed Future Homes Standard and develop sector specific guidance

Tech consult on proposed spec of Future Homes Standard

2024

Part L FHS regs released

2025

Part L FHS regs come into effect

*Local authorities will retain powers to set local energy efficiency standards but EVERYONE has to comply with baseline building regs as outlined by the FHS.

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IS HYDROGEN THE SOLUTION?

In short, no. The economic viability of hydrogen as a fuel source is not expected until the mid 2030s.

 

Hydrogen can be extracted from water using electrolysis, in a process powered by clean wind power. And, while big firms may be backing this as a source to potentially heat the UK's homes, the Climate Change Committee has stated that this would require double the wind power than is currently planned which "isn't going to happen". They estimate that just 11% of home heating will come from hydrogen.

It is expected that a mix of technologies will represent the heating landscape of the future, not just one solution.

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