Good installations are won or lost before anything is fitted

The performance of your system is decided at the design stage — long before an engineer arrives with tools. Choose the right size and specification and everything that follows is easy: quiet running, low bills, even temperatures, a long service life. Get the design wrong and no amount of quality installation can rescue it.

That's why we treat design as the most important part of the job, not a box to tick on the way to a sale. Here's exactly how we work out what your property needs.

Step 1 — Free on-site assessment

We come to you. A system can't be designed properly from a photograph or a floor plan, because the things that drive heating and cooling demand aren't visible on paper. During the visit we assess:

Room dimensions and volume, including ceiling height — a vaulted or high-ceilinged room holds far more air to condition than its floor area suggests.
Glazing and orientation — the size, type and compass direction of every window. South- and west-facing glass drives large solar heat gains that a north-facing room never sees.
Building construction and insulation — wall type, loft insulation and how much heat the fabric lets in and out.
How you use the space — occupancy, working hours, and any heat-generating equipment such as computers, servers or kitchen appliances.
Practical installation factors — where the indoor and outdoor units can go, refrigerant pipe routes, condensate drainage and power supply.

Step 2 — Room-by-room load calculation

Back at the desk, we turn those measurements into a calculated cooling load (how much heat we need to remove on a hot day) and heating load (how much heat we need to add on a cold one) for each room, in kilowatts.

This is the step most quotes skip. A floor-area rule of thumb treats every room the same; a real calculation reflects that two rooms of identical size can have loads that differ by more than double. For air-to-air heat pumps we go further and check the manufacturer's heating output at low outdoor temperatures — because a heat pump delivers less heat as it gets colder outside, and we size for the coldest realistic day, not the headline rating.

Step 3 — Bespoke system design

With accurate loads in hand, we specify the system that fits them:

Single-split — one indoor unit, one outdoor unit, ideal for a single room.
Multi-split — several indoor units running from one outdoor unit, for whole-home or multi-room coverage.
Ducted — concealed systems where a discreet finish matters.

We match the equipment to your load band so it can modulate smoothly rather than switching hard on and off, and we plan pipe runs, unit positions and drainage for both performance and a tidy finish.

Step 4 — Clear, honest proposal

You receive a proposal that explains what we're recommending and why — the calculated loads, the equipment specified, expected running characteristics, and the total cost with no hidden extras. If we think a different approach suits you better — including a water-based heat pump or solar solution from elsewhere in our group — we'll say so. We'd rather lose a job than fit the wrong system.

Book your free on-site assessment → (acselector.arcticnord.co.uk) or call 0333 090 7546.

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