Radiator balancing: why an even-heating house needs it
Balancing is the process of restricting flow to radiators nearest the boiler so the ones further round the loop still get their fair share. Without it, water takes the path of least resistance.
The engineering behind radiator balancing
Each radiator has two valves: the thermostatic or manual valve you adjust for temperature, and the lockshield, which sets how much water it is allowed through relative to the rest of the system. Balancing measures the temperature drop across each radiator with the system running flat out and nudges lockshields until every radiator gets roughly the same drop, typically around 10 to 12°C.
What matters most with radiator balancing
- Balancing is normally done once and rarely needs repeating
- It should follow any radiator addition, removal or pipework change
- A clip-on thermometer on flow and return pipes makes it measurable
- Unbalanced systems waste energy heating the nearest rooms twice
- TRVs control temperature; lockshields control flow share
Where we deal with this
Published business details
- Based at 24 Bristol Road, Radstock, BA3 3EE
- Telephone enquiries: 07516 118198
- Opening hours: Monday to Friday, 8:30am to 5:00pm
Need help with radiator balancing?
The honest position: A properly balanced system reaches temperature evenly and often lets you turn the boiler flow temperature down, which saves fuel across the whole heating season.
For gas work, use a Gas Safe registered engineer; for oil work, use an OFTEC-registered technician.
Related help pages
- Oil storage regulationsOil tank bunding: the rules behind that inner containment wall
- Cleaning methodsPower flush vs chemical flush: which one your system needs
- Efficiency controlsLoad compensation: how a modern boiler reads your room temperature
- Symptom guideHeating fine but hot water only lukewarm: what causes the split
- Service frequencyHow often a boiler actually needs servicing
- Efficiency checksCondensing efficiency checks: is your boiler actually condensing
Services that cover this
Questions we get asked
- How do I know my system needs balancing?
- If rooms furthest from the boiler are consistently cooler despite fully open valves, the flow is not being shared evenly.
- Can balancing be done without draining the system?
- Yes, it is done live with the heating running and is one of the quicker jobs an engineer will carry out during a visit.
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