Air Source Heat Pump Installation in Carlyon Bay

Carlyon Bay is the premium residential address on the south Cornish coast between Charlestown and Par — cliff-top homes, gated executive developments, and sea views that attract buyers well above the Cornwall average. At 96% off gas, virtually every property here runs on oil. The combination of high property values and oil dependency creates one of the strongest natural markets for self-funded heat pump installation we work in.

No planning constraints, excellent gardens

Unlike the heritage-constrained villages nearby, Carlyon Bay has no conservation area designation and no AONB landscape constraints within the residential development. Planning permission for heat pump units is almost never required here — permitted development covers the vast majority of installations. Large rear gardens on the detached homes mean outdoor unit siting is straightforward, with ample clearance from property boundaries and no noise planning concerns.

The typical Carlyon Bay installation

A large detached Carlyon Bay home (4–5 bedrooms, 1970s–2000s construction) typically suits a 10–14kW air source heat pump paired with a 300L unvented hot water cylinder. If the property has existing underfloor heating (common in more recently built executive homes here), the system runs at maximum efficiency straight out of the box. Properties with conventional radiators usually need minimal adjustment — modern larger-format radiators common in 1990s–2000s homes work well at heat pump flow temperatures.

High-specification systems we often install here: Mitsubishi Ecodan R290 (12–14kW), Vaillant Arotherm Plus, paired with a Mixergy or Megaflo unvented cylinder. Combined with a solar system and battery, these properties can achieve near-energy independence in summer.

BUS grant and total cost

The £7,500 Boiler Upgrade Scheme grant applies to all Carlyon Bay oil-to-heat-pump replacements. Typical installed cost for a large home: £14,000–£19,000 gross, and £6,500–£11,500 after the £7,500 grant or £5,000–£10,000 after the £9,000 off-gas uplift. We're about 22 miles away — book a free survey and we can usually attend within days.