Dyfed

Heat load surveys and system design in Dyfed

Room-by-room heat load design for homes throughout Dyfed, including Llanelli, Ammanford and Aberystwyth. Free with every installation quote.

  • from £365Local guide price
  • Survey 1–2 hoursTypical time
  • 9Towns covered
Heat load surveys and system design
  • Free survey and written quote
  • Refrigerant work by F-gas certified engineers
  • Price fixed in writing
  • England, Scotland, Wales and NI
  • Cools in summer, heats in winter

Heat load surveys and system design across Dyfed

Every Carmarthen quote starts with a room-by-room survey rather than a guess from floor area. For self-builds and extensions in Carmarthen, a standalone design pack can go straight to your builder. Humid summer spells in South Wales make dehumidifying and cooling equally welcome.

Prices in Dyfed

Guide prices around Dyfed run from £365 to £1,145 for a standalone design pack including VAT. That sits a little below the UK middle, reflecting typical South and Mid Wales labour rates. The design pack price depends mainly on the number of rooms and whether full drawings and equipment schedules are needed. Typical Design pack work (drawings and schedules for one home) lands around £365–£745 in this area.

Home survey

Free
inc VAT, South and Mid Wales guide

Free with an installation quote.

Balanced choice

Design pack

£365–£745
inc VAT, South and Mid Wales guide

Drawings and schedules for one home.

Self-build pack

£645–£1,145
inc VAT, South and Mid Wales guide

Whole-house design for a new build.

Planning and permissions

In Wales, outdoor units of up to 1.5 m³ that meet MCS 020a noise limits are usually permitted development on houses; listed buildings need consent, and in conservation areas a unit cannot go on a wall or roof facing a road.

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. At the survey we look at how each room is used, where the sun hits it and how the pipes can reach the outside wall, then put it all in a written quote.

What is included

Included with heat load surveys and system design across Dyfed:

  • Room-by-room heat gain and heat loss
  • Equipment selection and outdoor unit sizing
  • Noise check to the nearest neighbour
  • Pipe and drain routes
  • Written proposal with options
  • Electrical load for your electrician

Towns in Dyfed

Pick your town for local details, or see every service in Dyfed.

FAQ

Heat load surveys and system design in Dyfed

How much do heat load surveys and system design cost in Dyfed?

Our South and Mid Wales guide range is £365–£1,145 for a standalone design pack, including VAT.

Which towns in Dyfed do you cover?

All of Dyfed, including Llanelli, Ammanford, Aberystwyth and Carmarthen. Each town has its own page below with local details.

Will the outdoor unit need planning permission in Dyfed?

Since 1 June 2026, most houses in Wales can have an outdoor unit under permitted development if it meets the size, number and MCS 020a noise conditions. Flats, listed buildings and conservation areas need more care. We check on survey.

Is the survey free?

Yes, for new installations on the mainland. The survey and written quote are free and there is no obligation.

How long does a survey take?

One to two hours for most homes.

Why can't you just quote from floor area?

Two rooms the same size can need very different units because of glazing, orientation and use. Sizing from floor area alone is the main cause of systems that never feel right.

Next step

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