We start from a design load in watts per square metre — 120 W/m² for homes, 160 W/m² for commercial space, 200 W/m² for industrial — the same range HVAC engineers use for a first-pass sizing estimate.
Insulation quality (from your building's age), how much sun the room gets, how many people typically use it, and your ceiling height all move the number up or down from that baseline.
Not every room hits peak demand at the same moment, so a shared outdoor unit serving several rooms can be sized at 80% of the combined total without leaving anything underpowered.
It's a genuine, itemised price from our live catalogue and current labour rates — not a rough guess. A free survey confirms it before installation, in case something about your property (like an unusually long pipe run) changes the job.
Single-split gives every room its own outdoor condenser — more flexibility on tier per room, and one room's issue never affects another. Multi-split shares one outdoor unit across several rooms — tidier outside, and typically better value for 3+ rooms.
Domestic properties having a full installation (not supply-only) qualify for 0% VAT under the UK's Energy Saving Materials scheme. Commercial and industrial installations, and all supply-only orders, are charged the standard 20% rate.
Domestic installations across Blackpool & Fylde Coast, Preston, Leyland and surrounding Lancashire areas.
Serving major North West cities including Manchester & Liverpool with dedicated rapid-response teams.
Full national coverage for commercial HVAC projects, VRF systems, and large-scale architectural cooling.