David Patrick from Dimplex explores how electric heating and smart ventilation technologies can be easily integrated to deliver affordable warmth and comfort.
As household energy costs in the UK continue to rise, fuel poverty has become a widespread challenge for the UK housing sector. While warmth and comfort were once assumed to be basic outcomes of modern housing, both are increasingly out of reach for millions of tenants and addressing this challenge requires a fundamental rethink of how homes are designed, heated and ventilated.
Designing for affordable warmth
Fuel poverty is often framed as a cost of energy issue, but the reality is more complex. According to National Energy Action, 6.1 million UK households are now living in fuel poverty, a figure that has risen from an estimated 4.5 million in late 2021.
This rise reflects not only volatile energy prices but also housing stock that is struggling to operate efficiently and manage moisture. In many homes, poor thermal performance goes hand in hand with inadequate ventilation, and the effects are compounded when occupants reduce heating or switch off ventilation units to save money. When a property becomes cold, a lack of effective air management can lead to damp and mould, undermining occupant health, damaging interiors and increasing long-term maintenance costs.
While insulation and airtightness upgrades remain essential, heating systems continue to play a vital role in whether a home can be kept warm affordably. Replacing fossil-fuelled systems with high-efficiency, smart electric space and water heating enables households to use cleaner electricity and gain greater control over energy use.
However, heating alone is not enough. As homes become more airtight in pursuit of efficiency, effective ventilation becomes essential to maintain indoor air quality without driving up heat loss. This is where decentralised mechanical extract ventilation (dMEV) fans add a vital third layer to the design strategy. By continuously extracting moisture and stale air at low energy consumption, dMEV systems help prevent condensation and mould whilst allowing heating systems to operate more efficiently.
Importantly, dMEV fans also provide targeted, demand-led ventilation without the heat penalties associated with intermittent or uncontrolled airflow. This balance between achieving thermal comfort and good indoor air quality supports healthier living conditions while keeping running costs low – a crucial consideration for households at risk of fuel poverty.
Building resilience into homes
To tackle fuel poverty, homes must be designed with efficient electric space and water heating, smart controls and low-energy ventilation considered together, not as individual additions.
When warmth, air quality and energy efficiency are built into a home’s core design, occupants benefit from stable indoor comfort, reduced energy costs and improved wellbeing. By adopting this whole home approach that combines electric space and water heating with smart ventilation solutions, the housing sector has an opportunity to address fuel poverty. Creating homes that are not only compliant with standards but also deliver affordable thermal comfort and improved indoor air quality.
Electrification in action
The Llanrumney development in Cardiff is an example of how social landlords can successfully deliver low-carbon, affordable homes while maintaining operational simplicity and long-term performance.
The scheme, completed in July 2025 by Cardiff Community Housing Association (CCHA), includes 12 newly built homes, which are expertly designed to address fuel poverty and decarbonisation targets.
A key objective for the CCHA was to achieve EPC A ratings across each property by ensuring the provision of energy-efficient homes which are futureproofed against rising energy costs and ever evolving standards. To achieve this, an all-electric solution was specified, combining high heat retention (HHR) storage heaters and hot water heat pumps, alongside roof-mounted photovoltaic (PV) panels.
Each home is fitted with between five and eight HHR storage heaters, which store energy during off-peak periods and release heat gradually throughout the day. These efficient units provide tenants with the opportunity to reduce peak electricity demand and to be compatible with time-of-use tariffs. In addition, built-in smart controls allow residents to manage comfort, helping reduce unnecessary support callouts.
Hot water is provided by heat pumps, which extract heat from ambient air to produce domestic hot water. This reduces electrical demand while offering a familiar, low-maintenance solution well suited to social housing environments. The solar PV panels installed on each property further reduce each property’s reliance on grid electricity.
All 12 homes in the scheme achieved EPC A ratings, delivering tangible benefits for residents through lower running costs and improved comfort, offering social housing landlords a practical, scalable blueprint. It clearly demonstrates how proven electric heating and hot water technologies can deliver compliance, tenant satisfaction and long-term sustainability, helping social housing providers futureproof their stock, while supporting the UK’s transition to net zero.
David Patrick is head of specification marketing at Dimplex