Case Study – Air Source Heat Pump Retrofit
Sheepscombe, Gloucestershire
Project Overview
Star Green Heating was commissioned to upgrade an existing heating system in a property in Sheepscombe, Gloucestershire. The aim was to replace the current setup with a modern, energy-efficient air source heat pump system while improving overall heating performance.
Our Solution
We carried out a full retrofit installation, carefully designing the system to work efficiently within the existing property.
The installation included:
✅ Vaillant aroTHERM Plus 12kW Air Source Heat Pump for efficient, low-carbon heating
✅ Hot water cylinder for reliable domestic hot water
✅ Buffer tank to improve system stability and efficiency
✅ Vaillant sensoCOMFORT controls for intuitive system control
✅ Upgraded radiators throughout the property to suit low-temperature heating
The system was designed to integrate with the existing property layout while ensuring optimal performance and comfort.
Looking for a renewable heating solution?
Contact Mark today
Phone: 07973 661559
The Result
The upgraded system delivers:
Improved heating performance throughout the home
Increased energy efficiency compared to the previous system
Lower carbon emissions and reduced environmental impact
A future-proof heating solution designed for long-term reliability
By upgrading the radiators and system components, the heat pump can operate efficiently at lower temperatures while maintaining comfort.
Why This Matters
Retrofit projects like this demonstrate that air source heat pumps can be successfully installed in existing homes. With the right design and upgrades—such as correctly sized radiators—homeowners can achieve excellent performance without needing a full rebuild.
Looking for an Air Source Heat Pump in Sheepscombe or Gloucestershire?
If you're considering replacing your existing heating system, Star Green Heating can design and install a tailored heat pump solution for your home.
Speak directly with Mark today:
📞 07973 661559
For more information, see our Air Source Heat Pump Installation Gloucestershire page
Frequently Asked Questions
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Yes—this project in Sheepscombe shows that air source heat pumps can be successfully retrofitted into existing properties with the right system design.
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In most retrofit installations, radiators need to be upgraded or resized. Heat pumps operate at lower temperatures, so larger or more efficient radiators are required for effective heating.
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The Vaillant aroTHERM Plus offers high efficiency, quiet operation, and reliable heating performance. It uses natural refrigerant technology and helps reduce energy usage and emissions.
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In many cases, existing pipework can be used, but upgrades may be required depending on the system design and performance requirements. A survey will determine what is needed.
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Heat pumps can be more efficient than traditional boilers, particularly when replacing older systems. Efficiency depends on system design, insulation, and how the heating is used.