Comfort on the design day
Room-by-room demand establishes what each space needs when outdoor conditions are at the selected design point.
Heat pump engineering
Heat pump system design that works on paper and on site.
From room-by-room heat loss and equipment sizing to emitters, controls, schematics and ground-array design, our engineers turn project data into a coordinated design package matched to the agreed scope.
20+ years operating
4,000+ systems installed
One team from design to support
Illustrative editorial visual. A complete design joins the building, heat source, distribution system and controls.
Why the design matters
Make the important decisions before installation starts.
Equipment cannot be selected in isolation. Heat demand, emitters, hot water, source conditions and controls need to be considered as one system.
Efficient low-temperature operation
Heat-pump selection, emitters, pipework, storage and controls are coordinated around an appropriate heating-water temperature.
A package the site team can use
Clear schematics, schedules and specifications reduce uncertainty between design, procurement, installation and commissioning.
Project data
Plans, fabric and intended use.
Room demand
Room-by-room heat-load calculation.
Heat source
Select and size the appropriate system.
Heat delivery
Emitters and hot-water provision.
Controls
Operation and commissioning strategy.
Project pack
Drawings, schedules and specifications.
A joined-up design
Follow the energy path from building demand to handover.
We start with reliable project information, calculate the demand, select the source and equipment, coordinate distribution and controls, then document the agreed design.
The level of detail depends on the project and the responsibilities agreed with your installer or wider design team.
Choose your route
Design support for a home, an installation, a commercial site or a whole scheme.
Homeowners and self-builders
Start with a property estimate, then let our team assess the building and develop a complete installed solution.
Get a free estimateInstallers and trade partners
Bring us the project information for design, specification and supply support around the scope your team will install.
Request design supportDevelopers and housing teams
Coordinate heat source, plant, groundworks, emitters and project interfaces across a new-build or housing scheme.
Request a consultationCommercial project teams
Develop a heating, cooling or heat-recovery design around the building, process, source and operational brief.
Request a consultation
What you receive
An engineering package matched to the agreed scope.
Not every project needs every document. We confirm the inputs, outputs and responsibilities before the design work begins.
Request a design quoteHeat-loss report
Room-by-room calculations using the building information and agreed design conditions.
Equipment specification
Heat-pump, hot-water and key system components selected against the calculated demand.
Emitter schedule
Radiator, fan-coil or underfloor-heating duties coordinated with the design flow temperature.
System schematic
A clear representation of the agreed hydraulic arrangement, controls and principal components.
Ground or source design
Borefield, collector or water-source design information where that specialist scope is included.
Schedule and bill of materials
Project documentation to support procurement, installation and the agreed handover process.
Standards and responsibilities
Compliance is designed into the agreed project scope.
Where an MCS design is in scope, the work is prepared against the applicable MIS 3005-D requirements and the room heat-load methodology in BS EN 12831-1:2017.
Grant eligibility and project compliance depend on more than one calculation. The property, products, installation, commissioning and current scheme rules must also satisfy the requirements that apply.
For larger or non-domestic work, responsibilities are coordinated with the appointed building-services team and other project consultants.
Designed around the project
From a Welsh home to complex shared and water-source systems.
The same principle applies at every scale: understand the demand, the source and the way the building will be used.
Home retrofit
Ffos y Broga
An 18kW air-source heat pump and solar PV were integrated into a pre-1850 home while retaining its existing radiator system.
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Multi-residential
Addison House
A communal ground-source system was coordinated for 44 apartments, supported by fourteen 180m boreholes.
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Bespoke water source
RNLI Tower Station at Waterloo Bridge
A custom Thames water-source system was engineered to provide heating, cooling and hot water for the station.
View the projectCommon questions
System design, clearly explained.
The starting information depends on the project. It commonly includes plans or measured dimensions, construction and insulation details, windows and doors, location, occupancy, hot-water demand, existing heating information and the intended project scope.
Yes. We can agree a design and supply scope around an installer or wider project team, with responsibilities and required information set out before work starts.
Yes. The selected emitters must deliver each space's calculated heat requirement at the agreed design water temperatures. A project can use radiators, underfloor heating, suitable fan coils or a coordinated combination.
Yes, where ground-source design is included in the agreed scope. Building demand, annual energy use, ground conditions, available area and the proposed operating profile all inform the collector or borefield design.
Turn the project brief into a buildable heat-pump system.
Tell us what stage you are at and what you need the design package to achieve.