Air Source Heat Pump Installation

Vaillant, Panasonic and Samsung heat pumps, sized from a proper heat loss survey and sited to cope with Pembrokeshire's coastal weather.

How We Approach an ASHP Install

An air source heat pump pulls heat from outside air, even in cold weather, and uses it to heat water for your radiators, underfloor heating and hot water cylinder. It runs most efficiently at a lower flow temperature than a gas or oil boiler, which is why sizing and radiator checks matter more here than on a like-for-like boiler swap.

We fit Vaillant's aroTHERM range, Panasonic's Aquarea range and Samsung heat pumps. All three are solid units, but the right choice depends on your property, your hot water demand, and in some cases what parts and servicing support is easiest to access locally. Where a split system suits the property better than a monobloc, the refrigerant pipework is connected on site by our F-Gas certified engineers.

Being on the coast, outdoor unit siting needs a bit more thought here than inland: salt-laden air accelerates corrosion over time, so we favour more sheltered positions and corrosion-resistant fixings where the property allows it.

Twin Samsung air source heat pump units installed by Allied Heating

Survey to Commissioning

Heat loss survey

Room-by-room calculation, radiator check, and a look at siting options for the outdoor unit.

System design

Unit size, any radiator upgrades, cylinder choice, and electrical supply check.

Installation

Outdoor unit, indoor hydraulics, pipework and controls fitted and connected.

Commissioning

Flow temperature and weather compensation set correctly, MCS certificate issued.

ASHP FAQs

Sometimes, but often not without changes. Heat pumps run at lower flow temperatures than a boiler, so radiators sized for a boiler are frequently undersized for a heat pump. We check this at survey and tell you which radiators, if any, need upgrading.
Most domestic installations in Wales fall under permitted development, but rules can differ for listed buildings and within the Pembrokeshire Coast National Park. We check your specific property as part of the survey rather than assume.
Modern units are quiet in normal operation, but siting still matters — we position the outdoor unit to avoid it running against a bedroom wall or a close boundary wherever the property allows.

Ground Source Heat Pump Systems

Where there's land for a ground array, worth comparing against ASHP.

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Renewable Heating Systems

Not sure which system suits your property? Start here.

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Vaillant Partner Installer

What our Vaillant accreditation means for your warranty.

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Panasonic PRO Installer

Our Panasonic training and what it means for an Aquarea install.

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Book an ASHP Survey

We'll assess your property properly before recommending a unit size.