Replacing a radiator is not just taking one down and hanging another. The tails, valves, centre spacing, output of the new unit and post-installation testing all matter.
When a radiator should be replaced
- The metal itself is leaking. Not a thread, but the body.
- The radiator heats poorly. Even with a normal boiler and proper circulation.
- A renovation is underway. The old unit no longer fits the size, look or connection layout.
- The system type is changing. For example, a new heat source or thermostatic control strategy.
What is often replaced together with the radiator
- Shut-off valves. Old valves are often the next weak point.
- Air vent. A new emitter without proper venting is a bad idea.
- Adapters and seals. Especially if the radiator type changes.
- Part of the tails. If the old geometry or threads are already poor.
How replacement usually goes
- Isolation and draining of the section.
- Removal of the old radiator.
- Preparation of brackets and connection set.
- Installation of the new unit and valves.
- Filling, bleeding and testing.
Typical prices in Israel
- Replacing one radiator — 620–1,100 ₪ labour
- With new valves and air vent — 850–1,350 ₪
- With altered tails or brackets — from 1,050 ₪
Frequently asked
Can the radiator be replaced without changing the valves?
Sometimes, but it is poor economy. If the valve set is old, that is often what starts leaking after the new unit is fitted.
Does the new radiator output need to be recalculated?
Yes. You should not automatically fit something "roughly the same". Room size, system regime and the real output target all matter.
Will the old radiator be taken away by the contractor?
Often yes, but it should be agreed in advance. Heavy cast iron units or difficult removal can be priced separately.