Heating system & radiator work
A heat pump is only as good as the system it's feeding.
Most of a heat pump's efficiency comes from the heating system being sized correctly. We do room-by-room heat loss surveys, radiator and pipework upgrades, and we simplify systems that were built with more zoning than a heat pump wants — so the heat gets where it's needed, and the system costs what it should to run.
Why it matters
The heat pump can be right and the system still wrong.
A heat pump gets sized for the house. The radiators and the pipework have to be sized for the heat each individual room needs — and that's where a lot of systems fall down. Plenty of homes we go to had the heat pump and cylinder fitted properly, and the radiators left exactly as the old boiler had them. Sometimes nobody raised it. Sometimes it got dropped to keep the price down.
Most of a heat pump's efficiency comes from the heating system being sized correctly. If the radiators and pipework can't deliver the heat output a room needs, the system runs poorly, never quite feels right, and costs more to run than it should. A room-by-room heat loss survey is what tells you which rooms are short, and by how much.
What we do
Three ways we put that right.
Room-by-room heat loss
The measurement everything else follows from — how much heat each room actually needs, so radiators and pipework are sized against real numbers instead of guesswork. Charged on the published rate card like any other time on site.
Radiator & pipework upgrades
A radiator sized for a hot boiler system gives out less heat at heat pump temperatures. The ones that fall short get upgraded, the rest stay as they are — and the same goes for pipework that can't carry the flow a room needs.
Simplifying the system
Zone valves, actuators and extra pumps come from the boiler era, when a system had to hold a high flow temperature. A heat pump wants the opposite. Where it's worth doing, we take that complication back out — see underfloor heating for how that works in practice.
Real jobs
From recent visits.
Related
Alongside everything else we look after.
We keep the heat pump itself right with annual servicing, look after the unvented cylinder and underfloor heating, and handle repairs when something’s actually faulty. This is the work that goes alongside all of it — making sure the system the heat pump is feeding is the right size for the house. Members on a Plus or Premier care plan get their labour and parts discount on it.
Care plans
The discounts apply to this work too.
Three plans, and all of them include the annual service. On Plus and Premier, the labour and parts discounts apply to radiator and pipework work like this — not just to repairs.
Essential
£18/month
The annual service, paid monthly — and cheaper than booking it one-off.
- Annual service: heat pump and hot water cylinder together
- Expansion vessel, pressure relief and safety valve checks
- Full written photo report
- Standard booking
- Join any time of year
Plus
£24/month
Everything in Essential, and…
- Priority 2 booking, subject to availability
- 10% off your callout charge
- 10% off labour — including radiator and pipework work
- 10% off parts — including the radiators themselves
- December cover — priority breakdown response, no seasonal uplift
Premier
£29/month
Everything in Plus, and…
- Priority 1 booking — same or next day, subject to availability
- 25% off your callout charge
- 15% off labour
- 20% off parts
- December cover — priority breakdown response, no seasonal uplift
Rather not commit? A one-off annual service is £228 inc. VAT (£190 +VAT), cylinder included — book one here.
Plans are discounts on work, not free work. Priority booking is subject to availability.
Reviews
This is exactly the work David booked us for.
“Barrie did a great job replacing my ancient leaking radiator system with a new reliable one that more efficiently distributes the heat from my air source heat pump around my quirky 1740s house. The work was clean, tidy and the old radiators taken away.”
“Our system is not a simple installation… separate heating circuits for the main house and annex, underfloor heating, domestic hot water cylinders, pumps, controls and pressure-related issues that have needed proper understanding rather than guesswork.”
FAQs
Radiators and sizing, answered.
Why are some of my radiators cold with a heat pump?
Do I need bigger radiators for a heat pump?
My heat pump was installed years ago and nobody mentioned the radiators. Is that a problem?
What does this work cost?
Areas covered
Across Gloucestershire, Herefordshire & Monmouthshire.
Don't see your area? Get in touch — it's worth asking.
Rooms that never get warm?
Get in touch for a proper look at the whole system — published rates, hard caps.