Self build heat pump installation using Boiler Upgrade Scheme in Cornwall

Installing a low-carbon heating system in a self-build home in Cornwall

When Michael and his partner retired, they left their draughty farmhouse behind and built a new home in Looe, Cornwall. Their goal was simple: to create a warm, energy-efficient house that would be easy to live in and low-cost to run.

They wanted “the best heating system they could get" when they designed their home. They chose a EvoProductKensa Evo ground source heat pump over an air source alternative, avoiding needing any visible outdoor unit. They had lots of outside space, so they opted for What are Slinkies & Straight Pipes?What are Slinkies & Straight Pipes?slinkies – pipework that collects the ambient heat from the ground as their heat collector.

The finished property includes underfloor heating throughout, high-performance triple glazing, solar PV panels, and battery storage, creating an efficient, all-electric home powered by renewable technology.

Smooth heat pump installation by local installer

South West Renewables completed the heat pump installation and worked closely with the groundworkers and the site plumber, ensuring a smooth process from start to finish. Michael described the experience as "very straightforward."

How they reduced heat pump costs with the Boiler Upgrade Scheme

To help cover the upfront cost of his ground source heat pump, Michael used the Boiler Upgrade schemeFundingBoiler Upgrade Scheme (BUS) — a government grant that supports the move to low-carbon heating in homes across England and Wales.

Since moving in, he’s seen a clear benefit: his energy bills have gone down compared to his previous home. The system, designed to keep running costs low for the long term, combines renewable heating, insulation, solar panels, and battery storage.

What it’s like to live with a ground source heat pump

Since moving in, Michael has found the heat pump easy to use and effective. “Each room has a thermostat and can be centrally controlled via Wi-Fi and an app,” he explained. The system runs quietly in the background, switching on only when it’s needed.

The change in comfort has been noticeable: “More comfortable and consistent than before. Warmer than I expected.” On top of that, it’s “quiet and unobtrusive” and “saves me money on my energy bills.” He added that it “works as expected” and is “easy to control.” Michael also noted how quiet his ground source heat pump was.

Advice for others looking to switch to a ground source heat pump

Micheal rated his Kensa heat pump 5-star and encourages others to plan well and aim high on efficiency: "If you have the space, put a ground source heat pump in."