Chris Stammers from BEAMA’s Underfloor Heating (UFH) Group explains how hydronic (water-based) underfloor heating, paired with air-source heat pumps, delivers reliable energy efficiency –and why social landlords are ideally placed to make the most of it.
The regulatory landscape for social housing has shifted dramatically in a short space of time, bringing some of the biggest changes the industry has ever experienced. The Government’s £15bn Warm Homes Plan aims
to upgrade up to five million homes and lift up to one million families out of fuel poverty by 2030. For social landlords, this isn’t a distant ambition – it comes with clear, time-bound obligations. £1.29bn has been allocated through the Warm Homes: Social Housing Fund Wave 3, to be delivered between 2025 and 2028 by eligible social housing landlords.
Alongside this, the Government has confirmed that every social home must meet the current EPC C standard by 2030, with phased compliance extending to 2039 under the new system. From 2030, social landlords will also be required to upgrade homes to meet new energy efficiency standards, which could include improving insulation, installing solar panels or fitting modern heating systems such as heat pumps.
For organisations planning new-build programmes or upgrading existing stock, the heating specification is no longer a secondary concern – it now sits at the centre of compliance, tenant wellbeing and long-term asset value.
HYDRONIC UNDERFLOOR HEATING AND HEAT PUMPS
Air source heat pumps are widely expected to become the primary heating technology for new homes, but maximising efficiency of these renewable heat sources depends heavily on the heat emitter it’s paired with. As heat pumps perform best at low flow temperatures, typically between 35 and 45°C, hydronic underfloor heating is the ideal partner, as it’s designed precisely for this range and creates a highly efficient combination.
An accurately designed and professionally installed system can be up to 40% more efficient than a conventional radiator based heating system. That improvement comes from the way underfloor heating works. Pipe loops embedded in the floor create a large, low-temperature radiant surface which heats a space evenly and consistently, rather than generating high-intensity heat from a single point. The heat pump doesn’t need to work as hard, which improves its Coefficient of Performance and directly reduces running costs for tenants and evidence from Salford University’s Energy House 2.0 backs this up.
Testing a property built to the proposed Future Homes Standard, the study found that a hydronic underfloor heating system paired with an air-to-water heat pump recorded a temperature variation of just 0.8°C at -5°C – compared to a minimum variation of 2.2°C from traditional radiators, with some systems showing differences of up to 4°C. For tenants on tight budgets, that consistency isn’t just about comfort, it’s about predictable, manageable warmth.
A DIRECT RESPONSE TO FUEL POVERTY
With National Energy Action predicting that 6.7 million UK households could be in fuel poverty, the heating systems installed in new and upgraded social homes carry real consequences for real people. A tenant in a poorly heated home faces not just discomfort but health risks, increased pressure on NHS services and the daily stress of unaffordable bills. Hydronic underfloor heating addresses this directly.
Because the system covers a much greater surface area than radiators and runs at lower temperatures continuously it uses less energy to maintain comfortable conditions. It also eliminates cold spots and condensation prone surfaces that contribute to damp and mould, which remain among the most persistent and costly issues facing social landlords today. Radiant heat reduces dust circulation, improving indoor air quality and making it a genuinely healthier way to heat a home, particularly for tenants with respiratory conditions.
LONG-TERM BENEFITS
For social housing developers focused on whole-life asset costs, the maintenance picture is compelling, as a well-specified hydronic underfloor heating system requires little maintenance. Reducing the need for reactive and planned maintenance also translates into meaningful operational savings.
Part L of the Building Regulations already requires underfloor heating systems to include zoning capabilities, allowing each area of a home to be led independently. Smart thermostats extend this further, enabling tenants to manage the temperature room by room via a smartphone app and more advanced devices use local weather data to activate heating at exactly the right moment avoiding unnecessary running time and keeping bills as low as possible.
For social landlords dealing with all these new policies at once, hydronic underfloor heating paired with an air-source heat pump isn’t just a compliant choice. It’s one of the few options that bring energy performance, maintenance cost and regulatory readiness together in a single solution.
Chris Stammers is head of heat systems technologies & portfolio manager for BEAMA’s Underfloor Heating (UFH) Group