Why do it:

Air Source Heat Pumps work in reverse of a chiller, extracting heat from the outside air to provide space heating and hot water, delivering highly efficient, low‑carbon energy compared to gas or direct electric systems.

Typical Savings:

• Efficiency (COP 3–4 or 300-400% efficient): 60–70% reduction in energy use compared to direct electric heating.

• Gas replacement: 20–40% savings compared to conventional gas boilers (depending on tariffs and system design).

• Carbon reduction: 40–60% lower emissions when powered by grid electricity, even greater with renewables.

• Total potential: 20–50% reduction in heating energy.

Typical Costs:

• Rule of thumb: £800–£2,000 per kWth (UK industrial/commercial benchmark).

• Ongoing costs: £20–£40 per kWth per year (maintenance, & monitoring).