Berkshire + selected London areas

Storage heater repair, replacement & upgrades

A cold storage heater does not automatically mean the heater has failed. We first establish whether the off-peak supply is present, whether the circuit is switching correctly and whether the appliance is charging before recommending parts or replacement.

✓ Dimplex certified installer✓ NICEIC registered electrical work✓ G3 unvented qualified✓ Electrical + heating diagnosis

Common reasons customers call

Heater cold every morning
Only one heater in the property has failed
All storage heaters stopped together
Heater gets hot but room is cold later
Boost works but stored heat does not
Controls are confusing or not responding
Old heater needs a Lot 20 / HHR upgrade

What we check before recommending parts

Electric heating faults can be upstream of the appliance. We test in a logical order and keep repair versus replacement as a decision made after evidence, not before.

Off-peak supply at the correct time
Consumer unit and dedicated heater circuit
Local isolator / fused connection point
Elements and thermostatic controls
Thermal cut-outs and internal connections
Room sizing and replacement suitability

Where this service is useful

Flats
Rental properties
No-gas homes
Student accommodation
Retirement housing
Landlord portfolios

Brands and systems

DimplexCredaHeatstoreElnurStiebel Eltron

Berkshire and London coverage

We cover Reading, Maidenhead, Windsor, Slough, Bracknell, Wokingham and surrounding Berkshire areas, plus planned visits in West and Central London including Ealing, Hillingdon, Hammersmith & Fulham, Kensington & Chelsea, Westminster, Richmond and Kingston.

Frequently asked questions

Why have all my storage heaters stopped at once?

When several heaters fail together, the common off-peak supply, metering, contactor or heating consumer unit should be checked before blaming individual heaters.

Can you test at night?

Where a fault depends on an off-peak period, we can plan the diagnosis around the available switching arrangement or use other testing evidence where appropriate.

Should I replace old storage heaters with panel heaters?

Not automatically. Running-cost implications, tariff, insulation, occupancy and hot-water setup should be considered before changing heating type.

Related services

Technically reviewed by Berkshire Electric Heating

Reviewed 9 September 2026 · NICEIC-registered electrical work · G3 unvented hot-water qualified · Dimplex Pro / Quantum installer training.

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