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Floor plans, a laptop showing a room-by-room heat map and a laser measure on a desk at dusk

Heat loss calculations and design

Heat loss calculations and system designacross East Sussex

Accurate design is key to an efficient heating system. We calculate the heat loss of every room so your heat pump, boiler or underfloor heating is correctly sized and performs at its best.

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  • Room-by-room calculation
  • Heat pumps, boilers and UFH
  • Architect-led projects
  • New builds and extensions

What we do

Why the numbers come first

A heating system that's too small leaves rooms cold, and one that's too big wastes energy. A heat loss calculation works out how much heat each room loses on a cold day, so we can size everything to match.

It's how we size a heat pump correctly, and we also carry out heat loss calculations and system design on architect-led projects, new builds and renovations.

What's included

  • Full house heat loss calculations
  • Heat pump, boiler and underfloor heating design
  • Radiator and cylinder sizing
  • Design for architect-led projects
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A thermal imaging camera, laser measure and tape measure on a windowsill

How it works

How the design works

From the first visit to a design you can build from.

  1. A thermal imaging camera and laser measure on a windowsill

    Step 1

    Survey

    We measure each room and note the walls, windows, floors and insulation, or work from your architect's drawings.

  2. A laptop showing a room-by-room heat map beside floor plans

    Step 2

    Calculate

    We work out the heat each room needs to stay warm on the coldest days, room by room.

  3. A drawing of a heat pump system from the outdoor unit to the cylinder and radiators

    Step 3

    Specify

    We size the heat pump or boiler, the hot water cylinder and the radiators or underfloor heating for each room.

  4. Neat new heating pipework with brass valves

    Step 4

    Install

    We install the system to the design, working alongside your builder and architect where there is one.

Who it's for

Projects we design for

A modern double-height living space at dusk

01 / 04

New builds

Designing the heating at the drawing stage means the heat pump, underfloor heating and ventilation are planned in from the start.

Reviews

What our customers say

5.0

from 22 reviews

Read all 22 reviews
  • Combi boiler

    install a new combi boiler and flush out rads

    Daniel came to fit a new combi boiler . He made a very good job of it , he is neat and tidy , pleasant and reliable .would recommend him to others

    13 April 2018 · MyBuilder

  • Heating

    Gas / Heating engineer

    This company was preferred to an alternative larger one because he was prepared to listen to what exactly would suit my needs. We discussed other optional extras and he came e up with good solutions. Although we had no heating during an exceptionally cold spell, Dan was kind enough to offer the use of some free standing heaters that he had. After service was excellent and he has always told us to contact him if we have any queries and he is happy to come round.

    22 February 2018 · Rated People

  • New heating system

    Plumber

    Dan was excellent and installed our new system promptly. Dan finished the job within the specified timescale and also gave good advice on other improvements. We'll have no hesitation using Dan again or recommending him to a friend. Also, very competitive price.

    17 January 2018 · Rated People

Questions

Common questions

A room-by-room assessment of how much heat your home loses through its walls, windows, floors and roof on a cold day. It tells us how much heat each room needs.

Got a different question?

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Contact

Get a free quote

Tell us what you need in a few taps, or message us on WhatsApp, and we'll come back to you with a quote.