Warm feet at your desk
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Silentnight Comfort Control Electric Foot Warmer review: running cost and verdict
8.2/10
Teddy fleece foot warmer with 3 heat settings, overheat protection and a 2-hour auto shut-off. Slip your feet in under the desk: warms you for about a penny an hour.
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The good
- 3 heat settings
- Auto shut-off after 2 hours
- Machine-washable fleece liner
- 3-year guarantee (per Silentnight)
The not so good
- Power not stated on the listing
- Some buyers want it hotter
Who is it for? Cold feet at a desk or on the sofa, at home or in the office.
How much does it cost to run?
One hour at full power (50 W (typical))
1.3p
at 26.32p/kWh
A month of typical use
£2.21
8 hours a day, 21 working days
Ofgem price cap, Direct Debit, national average (1 October to 31 December 2026). More in which electric heater is cheapest to run.
Specifications
| Type | Under-desk heater |
|---|---|
| Power | Not stated by the seller |
| Controls | Timer, hand controller |
| Oscillation | No |
| Tip-over protection | Not stated |
| Splash protection | No |
| Noise | Silent (no fan) |
| Amazon ASIN | B0CNS3ZYG8 |
| Source of specs | Amazon.co.uk listing (572620GE) and silentnight.co.uk (3 settings, 2-hour auto off) |
Frequently asked questions
How much does the Silentnight Comfort Control Electric Foot Warmer cost to run?
At full power it uses 0.05 kWh an hour (typical): about 1.3p at the Ofgem price cap (26.32p/kWh). Typical use (8 hours a day, 21 working days) comes to around £2.21 a month.
Alternatives
OLYDON Heated Floor Mat Under Desk 55W
- Under-desk heater · 55 W
- A 55 W heated mat to rest your feet on under the desk, with 7 temperature settings and a 3-hour auto-off: a full working day costs a few pence.
- Costs 1.4p an hour at full power.
Coldfighting 180W Infrared Panel Heater (Under Desk)
- Under-desk heater · 180 W
- A thin 180 W infrared panel that warms your legs under the desk: silent, no fan, and about 5p an hour. Wall or desk mounting; no stand or thermostat.
- Costs 4.7p an hour at full power.
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