Heat load surveys and system design across County Londonderry
Every Derry/Londonderry quote starts with a room-by-room survey rather than a guess from floor area. No two rooms in Derry/Londonderry gain or lose heat in quite the same way, which is exactly why rooms are measured before sizing. Northern Ireland's mild, damp climate makes efficient heating and dehumidifying the main benefits for most homes.
Prices in County Londonderry
Heat load surveys and system design in County Londonderry typically come in at £365–£1,145 for a standalone design pack including VAT, based on Northern Ireland rates. It is a touch below the UK middle, as trade rates in Northern Ireland tend to be. The design pack price depends mainly on the number of rooms and whether full drawings and equipment schedules are needed. On our Northern Ireland figures, the Design pack option (drawings and schedules for one home) is about £365–£745.
Home survey
Free with an installation quote.
Design pack
Drawings and schedules for one home.
Self-build pack
Whole-house design for a new build.
Planning and permissions
In Northern Ireland we confirm planning requirements for the outdoor unit on survey, especially for listed buildings and conservation areas.
The survey
The free survey is where the real price is set: room measurements, pipe and drain routes, electrical checks and the outdoor unit position, all written into your quote. On a survey in County Londonderry the engineer looks at room size, glazing, the route for pipes and drains, the electrics and where the outdoor unit can sit quietly, then the written quote follows.
What is included
Included with heat load surveys and system design across County Londonderry:
- Equipment selection and outdoor unit sizing
- Pipe and drain routes
- Noise check to the nearest neighbour
- Room-by-room heat gain and heat loss
- Electrical load for your electrician
- Written proposal with options
Towns in County Londonderry
Pick your town for local details, or see every service in County Londonderry.