As the UK accelerates its transition to greener energy, air source heat pumps (ASHPs) are becoming a leading solution for efficient, sustainable home heating. While new builds can integrate ASHPs relatively easily, retrofitting older properties presents unique challenges. However, with careful planning and professional guidance from Infinity, older homes can still benefit from lower energy bills, reduced carbon emissions, and increased comfort.
This article explores the challenges, solutions, and benefits of installing ASHPs in older homes, demonstrating why Infinity is the trusted choice for your home heating upgrade.
Understanding Air Source Heat Pumps
Air source heat pumps extract heat from the outside air – even in cold weather – and use it to heat your home and water. They operate similarly to a refrigerator in reverse, transferring heat efficiently through a refrigerant cycle. ASHPs can deliver up to three times more energy than they consume in electricity, making them highly efficient and cost-effective in the long term.
For older homes, factors such as insulation, heating system compatibility, and available space must be considered to ensure optimal performance.
Challenges of Retrofitting Older Homes
Retrofitting older homes with ASHPs can be more complex than installing them in new builds. Common challenges include:
1. Poor Insulation
Many older properties, especially pre-1980s homes, were not designed with energy efficiency in mind. Thin walls, single-glazed windows, and draughts can cause significant heat loss. Since ASHPs operate at lower temperatures than traditional boilers, well-insulated homes are essential for maximum efficiency.
2. Existing Heating Systems
Older homes often have conventional radiators designed for high-temperature boilers. ASHPs provide heat at lower temperatures, so traditional radiators may struggle to warm the property effectively, leading to discomfort or increased energy use.
3. Limited Space
ASHPs require an external unit, usually placed in the garden or against an exterior wall. Older homes in urban areas may have limited space, making it challenging to find a suitable location that meets airflow, noise, and service access requirements.
4. Planning and Conservation Restrictions
Listed buildings or homes in conservation areas may face restrictions on external modifications. Installing an ASHP may require planning permission or special approvals, adding time and cost to the project.
5. Initial Costs
While ASHPs reduce long-term energy bills, installation costs can be higher for older homes due to additional works, such as insulation upgrades or radiator replacements.
Solutions for Retrofitting Older Properties
Despite these challenges, there are practical solutions that make retrofitting older homes with ASHPs feasible:
1. Improving Insulation
Upgrading insulation is critical before installing an ASHP. Key measures include:
- Loft and wall insulation – reduces heat loss and helps maintain consistent temperatures.
- Draught-proofing doors and windows – prevents cold air from entering and warm air from escaping.
- Double or triple glazing – improves window insulation significantly.
Proper insulation not only boosts ASHP performance but also enhances comfort and lowers energy bills.
2. Upgrading Heating Distribution
To heat an older home effectively, radiators may need replacing with larger or more efficient units. Underfloor heating is another excellent option, working efficiently with the lower operating temperatures of ASHPs.
3. Optimising External Unit Placement
Choosing the right location for the outdoor unit is essential:
- Adequate airflow – ensure the unit is unobstructed.
- Noise reduction – avoid bedrooms or neighbours’ walls.
- Ease of maintenance – allow enough space for service engineers.
Compact or wall-mounted ASHP units can also work in tighter spaces.
4. Navigating Planning Restrictions
For listed or conservation-area properties, consult your local authority early. Infinity’s experts can guide homeowners through the planning process and provide design solutions that meet regulations while maximising efficiency.
5. Financial Support
UK government schemes can help reduce installation costs:
- Boiler Upgrade Scheme (BUS) – grants for low-carbon heating systems, including ASHPs.
- Warm Home Grants – may cover insulation and energy-efficiency upgrades that complement ASHP installation.
Benefits of Air Source Heat Pumps for Older Homes
Retrofitting an older home with an ASHP offers numerous long-term advantages:
1. Reduced Energy Bills
ASHPs are highly efficient, often producing up to three units of heat for every unit of electricity used. This efficiency, combined with proper insulation and smart controls, translates into significantly lower energy costs.
2. Lower Carbon Emissions
Switching from gas boilers to ASHPs reduces a home’s carbon footprint, making them an environmentally responsible choice.
3. Improved Comfort
ASHPs deliver steady, consistent heat, avoiding the bursts of hot water from conventional boilers. When combined with upgraded radiators or underfloor heating, older homes become more comfortable year-round.
4. Increased Property Value
Energy efficiency is increasingly important for buyers. Installing an ASHP with insulation improvements can increase property value and market appeal.
5. Future-Proofing
As the UK moves towards decarbonising domestic heating, ASHPs are seen as a future-proof solution. Installing one now ensures compliance with future regulations and reduces reliance on fossil fuels.
Why Choose Infinity for Your ASHP Retrofitting
At Infinity, we specialise in providing efficient and reliable air source heat pump solutions for homes across the UK, including older properties. Here’s why homeowners trust us:
- Expert Assessment: We evaluate your home’s insulation, heating system, and layout to ensure your ASHP performs at its best.
- Tailored Solutions: Every home is different. Our team designs systems that suit your property and lifestyle.
- Professional Installation: MCS certified engineers install your ASHP safely and efficiently, ensuring minimal disruption.
- Ongoing Support: From maintenance advice to troubleshooting, Infinity is with you every step of the way.
- Sustainable Focus: We help you reduce energy bills and carbon emissions while improving home comfort.
With Infinity, retrofitting your older home with an ASHP is a seamless experience, combining technical expertise with personalised service.