Deep Dive into the Three Most Recent Building Regulation Changes (2022-2024)
The groundwork for the 2025 changes was laid in previous years. The most significant changes affecting plumbers in the recent past have been in Part L (Conservation of fuel and power) and Part F (Ventilation) of the Building Regulations.
Changes to Part L (June 2022): This was a major update that had a direct and immediate impact on the plumbing and heating industry.
Maximum Flow Temperature: A key change was the introduction of a maximum flow temperature of 55°C for new and replacement wet central heating systems in new builds. The goal is to make homes "heat pump ready" and encourage the installation of low-temperature heating systems.
Pipe Insulation: New rules were introduced requiring all primary circulation pipes, including those under floors and in walls, to be insulated to prevent heat loss. Plumbers must now provide photographic evidence to building control to prove compliance.
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Changes to Part F (June 2022): This focused on ventilation and its interplay with energy efficiency.
Ventilation Standards: The changes required higher standards of ventilation in new and refurbished properties to combat the "airtight" nature of modern, energy-efficient buildings. Plumbers must work alongside ventilation specialists to ensure systems are correctly designed and installed to prevent issues like condensation and mould, which can affect a property's plumbing infrastructure.
3. Future Homes Standard Pre-cursor (Ongoing): While not a single, definable change, the period from 2022-2024 has seen a continuous push towards the principles of the
Future Homes Standard.
Low-Carbon Heating: The changes to Part L, combined with government grant schemes like the Boiler Upgrade Scheme, have actively encouraged a shift towards low-carbon heating. This has been a de-facto regulation change, requiring plumbers to acquire new skills and certifications in installing heat pumps and other renewable heating systems.