There are two documents called a heat pump quote. One is a price with a model number, produced from a phone call and a postcode. The other is a design: heat loss calculated room by room, emitters audited, siting resolved, flow temperature chosen, and a price that follows from all of it. Only the second one survives contact with your house.
Home Comfort Assured Renewables carries out heat pump surveys and quote planning across Rickmansworth, and this is what the second kind actually contains.
Heat loss, room by room
The survey's foundation is arithmetic nobody can skip honestly: each room measured, its glazing, external walls, exposure and insulation assessed, and its heat demand calculated. Add the rooms and the house's true demand appears, which is what sizes the unit.
Rules of thumb fail here in both directions: an oversized heat pump cycles badly and costs more to buy and run; an undersized one disappoints in February. The calculation is the only route to a machine that fits, and a survey without it is a guess wearing a clipboard.
- Every room measured and assessed, not sampled.
- House demand built from room demand.
- Unit sized to the calculation, not the catalogue.
Siting and routes, walked in person
The outdoor unit needs a real position: clear airflow, sensible clearances from boundaries and windows, a solid base, and a condensate route that will not ice a path. That position is decided with a tape measure on site rather than from a brochure, because clearances and noise lines are specific to your walls and boundaries.
Indoors the survey walks the cylinder position and every pipe route between: how the flow and return reach the plant, where the discharge goes, what boarding or boxing the routes need. Routes walked at survey are routes that do not surprise anyone at installation.
- Outdoor position judged for air, noise and neighbours.
- Cylinder position confirmed with its pipe routes.
- Condensate and discharge planned, not improvised.
The design decisions the survey settles
Findings become design: the flow temperature the system will run at, the emitter changes that temperature implies, the cylinder size the household's hot water needs, the controls strategy including weather compensation, and the electrical supply work the unit requires.
Home Comfort Assured Renewables writes these decisions down with their reasons, because they are what a customer is actually buying. A quote that names its flow temperature and emitter list can be compared with another; a quote naming only a brand cannot.
The quote the findings justify
A survey-backed quote reads as a scope: unit and cylinder specified, emitter changes itemised room by room, pipework and electrical work described, controls named, commissioning and paperwork included, and any provisional items flagged honestly.
That structure is what makes quotes comparable and projects predictable. It also makes the honest answer possible: sometimes the survey concludes that insulation work or a staged approach should come first, and a firm willing to say so is the one worth surveying with.
Related pages
Questions customers ask
How long does a proper heat pump survey take?
Long enough to measure every room, walk the siting and routes, and discuss how the household lives. A visit that skips the room-by-room calculation has not produced a design, whatever the document is called.
What should a heat pump quote itemise?
Unit and cylinder specification, room-by-room emitter changes, pipework and electrical scope, controls, commissioning and paperwork, with provisional items flagged. Named flow temperature is the tell of a designed quote.
Can a heat pump be quoted without a home visit?
A price can be; a design cannot. Heat loss, siting, routes and emitters all need seeing, which is why the survey precedes any figure worth signing.
Calculate the rooms, walk the routes, name the flow temperature, itemise the scope: that is a survey producing a design instead of a number.
Home Comfort Assured Renewables surveys Rickmansworth homes to exactly that standard. The contact page books the visit.
