UK Immersion heater 3kW switch

Cupertino, October 21, 2020

From the UK. I’ve spent ages trying to sort a proper HomeKit switch out for our hot water (immersion) heater. I had been using a TimeGuard SupplyMaster fused spur but this the setup I worked up is so much better. Look...

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Shopping list from ScrewFix

11340 x 2 MK 1-Gang Surface Pattress Box White 30mm £2.32
74436 x 1 Wylex 3-Module IP65 Insulated Enclosure With Visor £11.01
1836P x 1 British General 40A DP Contactor £19.99
373HT x 1 MK Essentials 13A 1-Gang Unswitched Socket White with White Inserts

It’s all made smart by a simple smart plug that you set up in automations in HomeKit. I used a Meross smart plug and added a WiFi switch to the automations to act as a 3 hour booster. Brilliant for us as all the wiring otherwise is hidden in the roof space.

Hope this helps someone.

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