3.8kW Solar PV & Air Source Heat Pump Installation, Corwen


We were recently asked to design and fit an eco-friendly system in Corwen, North Wales. The objective was to enhance the energy efficiency of an old property by replacing traditional heating and power sources with sustainable alternatives. The project included the installation of solar panels, inverter and air source heat pump, along with the necessary modifications to the existing infrastructure.


The project began with a thorough assessment of the property’s energy requirements and the available space for the installation. Our team determined that nine 425W Trina solar panels would be sufficient to meet the household’s electricity needs. These panels were strategically placed on the roof to maximise electricity generation. We also selected a Solis inverter to be installed in the attic, ensuring optimal performance and protection from environmental elements. The inverter is responsible for converting the direct current (DC) produced by the rooftop solar panels into alternating current (AC) for use within the house.

A 6kW Grant Aerona 3 air source heat pump was selected to replace the outdated oil boiler, which offered a more sustainable and efficient heating solution. The heat pump was paired with a 200L Grant cylinder, providing ample hot water storage for the property. The necessary pipework modifications were made to integrate the heat pump into the existing heating system.

Installation & Outcome

The installation process involved careful planning and coordination to ensure the successful integration of the solar panels, inverter, and heat pump. The Trina solar panels were securely mounted on the roof, connected to the Solis inverter, and integrated into the property’s electrical system. This allowed the household to harness solar energy, reducing their reliance on the grid and decreasing their carbon footprint.

Simultaneously, the Grant Aerona 3 air source heat pump was installed, replacing the traditional oil boiler. The new heating system provided the residents with efficient and eco-friendly heating, powered by renewable energy from the air. The 200L Grant cylinder ensured an adequate supply of hot water for the household’s needs.

As the homeowner was not previously connected to the mains gas supply, they qualified for the First Time Central Heating grant. This is a government-backed scheme designed to encourage the adoption of renewable energy solutions. The ECO4 grant specifically targets households like theirs, providing assistance in transitioning to more sustainable heating options.

Following the completion of the installation, the residents experienced immediate benefits from the system. They witnessed a significant reduction in their electricity bills due to the solar panel’s ability to generate clean energy from the sun. Additionally, the Grant Aerona 3 heat pump proved highly efficient, offering comfortable heating and hot water while minimising energy consumption.

In conclusion, the successful installation of the Trina solar panels, Solis inverter, and GRANT Aerona 3 air source heat pump marked a significant step towards a more sustainable and energy-efficient home. The upgrade not only provided the residents with cost savings but also contributed to a greener and cleaner environment by ditching their old oil boiler.