Drayton Wiser Wireless Heating 1-Channel Radiator Thermostat Control Kit (White) — 3394V review
Households wanting proper room-by-room heating control without replacing existing radiator valve bodies
By Tom Calder
This kit turns a couple of radiators and the boiler into a zoned, app-scheduled system using your existing valves, with no ongoing subscription for core features. Independent research Drayton cites (BEAMA and Salford University, 2021) points to average savings of up to 19% from radiator thermostats — treat that as a guide, not a promise, since actual savings depend on the home and how it's used.
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- No subscription needed for scheduling, boost or app control
- Fits most existing UK radiator valves via the included Danfoss RA and M30x1.5mm adaptors — no drain-down needed if your valve body is already one of those two patterns
- 7-day scheduling, boost function and Alexa/Google Home voice control
- No Apple HomeKit support
- Full weather compensation needs an OpenTherm-compatible boiler — on other boilers you lose some of the modulation benefit
Who shouldn't buy this
Don't buy if you need Apple HomeKit integration, or if you already run a whole-home smart thermostat system — this kit is best as a first step or a top-up to two extra rooms, not a full-house retrofit on its own. Check your radiator valves before ordering, too: a pattern other than Danfoss RA or M30x1.5mm means replacing the valve body (and draining the system) before the kit will fit.
Key specs
| What it is | Wireless multi-room heating control kit |
| How it works | Mains hub bridges the boiler |
| Fits | Room thermostat is battery-powered and wireless |
| Install effort | DIY-friendly: swapping a TRV head onto |
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as of 20 Sep 2026, 12:29 BST · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.as of 20 Sep 2026, 12:29 BST · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.as of 20 Sep 2026, 12:29 BST · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.Want this cheaper?
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