Morphy Richards EverCosy Electric Under Blanket Review (2026)

The EverCosy is a double-sized electric underblanket designed to sit atop the mattress and beneath the bottom sheet. Unlike basic models with only three settings, this unit offers nine distinct heat levels, allowing for more precise temperature control. It is constructed from a cream polyester and includes a digital controller with a safety-focused 9-hour auto-shutoff timer, making it suitable for all-night use or pre-warming before bed.

In use, the 150x122cm sizing means it won't cover the entire surface area of a standard UK double mattress, potentially leaving a cool gap at the foot or head of the bed. However, the heat distribution is consistent, and the 9-setting controller provides a significant advantage over competitors, allowing users to find a 'just-right' maintenance temperature that prevents overheating in the early hours.

With a stated running cost of roughly 3p per hour, this device is a powerful tool for lowering household bills. If used for 8 hours a night instead of running a 2kW central heating system at a 2-degree higher setpoint, a UK household could potentially save £15-£25 per month during peak winter. Savings are conditional on the user's ability to lower the main thermostat while the blanket is in use.

This is a tie-on underblanket rather than a fitted skirt design. It requires looping strings under the mattress, which can be slightly fiddly but ensures a secure fit once tightened.

Estimated at 3p per hour based on current UK price cap averages. Actual costs will vary slightly depending on the specific heat setting chosen (1-9).