Seized, leaking or just outdated radiator valves and lockshields, swapped cleanly with a managed system drain-down and refill.
What we replace, end to end
Single-radiator or whole-house TRV and lockshield replacement. Modern Honeywell, Drayton or Pegler TRVs with double-line balancing. System drained partially (per-radiator) where possible to keep heating running for the rest of the property during the swap. If you only need radiators taken off the wall while you paint or paper, see our radiator removal and refit for decorating service.
When radiator valves need replacing
Seized valve head won't turn
TRV body has corroded internally. Sometimes a tap with a spanner is enough; often a swap is needed.
Visible leak at the valve body
Compression joint has failed or the spindle gland has perished.
Modernising old gate-valve lockshields
Pre-1990s system; new lockshields balance properly and don't leak.
Adding TRVs where there are none
Required for new Building Regs compliance on heating system replacements.
What it costs (indicative)
Per-valve labour billed per 30 minutes (1-hour minimum, then 30-minute increments) from £90 / 30 min (daytime) up to £180 / 30 min (nighttime) (see /pricing); valves themselves from £15 (basic TRV) to £75 (thermostatic with remote sensor). Full pricing.
When to call us
- ✔ A radiator valve is dripping or weeping.
- ✔ You can't turn a TRV head at all.
- ✔ You want zone-controlled heating for unused rooms.
- ✔ Your installer is replacing the boiler and Building Regs require TRVs throughout.