Emitter output
Compare each radiator or floor loop with its room load at design conditions.
Radiators & hot-water cylinders
Will your radiators and hot water work with a heat pump?
You may not need to replace every radiator. FLO checks what can stay, what needs changing and how your hot water will work.
Every property is different. The free survey checks what is possible before you commit to a system.
The answer you need
Does a heat-pump project require every radiator and cylinder to be replaced?
Not automatically. Each emitter should be checked against its room load at the proposed temperatures, while the cylinder must match household volume, recovery and coil requirements.
The property-specific checks
What will FLO check for your property?
We use these details to work out what is practical, what needs more investigation and what the next step should be.
Hydraulics
Check pipe sizes, flow rates, balancing and whether existing circuits can deliver the duty.
Hot water
Model storage volume, coil performance, recovery time and peak household use.
The next step with FLO
What will your assessment and quote cover?
FLO starts with your property, then explains the recommended work, the price, important exclusions and the next steps in writing.
Useful details to share
Request a free heat-pump surveyRadiator sizes and locationsPipework type where visibleCurrent cylinder or combi arrangementBath, shower and occupancy pattern
Room-by-room emitter schedule
Retain, resize or replace decision
Cylinder volume and recovery basis
Pipework, valves and controls scope
Good to know
Questions you may have.
Can existing radiators stay?+
Yes where their output at the proposed water temperature meets the calculated room load. The check must be room specific.
Can a heat pump work with a combi boiler cylinder-free setup?+
A standard air-to-water heat pump normally uses stored domestic hot water, so space and household demand need to be assessed.
Are fan-assisted emitters an option?+
They can provide higher output in limited wall space, but electrical supply, sound, controls and maintenance should be considered.
What might change the recommendation?+
Bigger is not automatically better. Oversized storage can waste space and heat, while emitter changes should be justified by calculated room demand and design temperature.
Original guidance and sources +
Talk to FLO
Just have a question?
Have a question about radiators & hot-water cylinders or your property's suitability? Ask FLO and we'll point you to the right next step.