Bathroom zones electric heater: read the plate first

The towel radiator is still in the hallway, and the panel is still taped shut. You have a drill and an amazon.co.uk listing that says "bathroom", and the wall you want is the one beside the shower. That word is a sales label. The bathroom zones electric heater decision is what keeps the product out of the water, and it has to be settled before anyone opens the wall.

Start with the place, then the rating plate, then the person who connects it. These panels stay out of zone 0, the inside of the bath or shower. Zones 1 and 2 are the splash around that volume. The rest of the room is still a bathroom. If the job needs a new cable in England, you also ask whether that work is notifiable. A qualifying purchase through our links, tag pcuk26-21, can earn a commission at no extra cost to you.

In short

Zone 0, the inside of the bath or shower, is closed to these panels. For zones 1 and 2, the bathroom guide cited here sets IPX4 as the minimum water protection, and Herschel's splash note discusses IP44 for zones 0, 1 and 2. In England, a new circuit, a replacement consumer unit, or work in the special location is notifiable, and a permanent heater is a hard-wired job rather than a 13 amp plug in a bathroom socket.

The four zones in plain language

The splash guides used here talk about four places. Zone 0 is the volume that holds the water: the inside of the bath, or the inside of the shower. A panel stays out of it, including an infrared panel with "bathroom" in the title. No mounting height inside the tray repairs that. If the only clear wall sits inside that wet volume, choose a different wall.

Zone 1 is the volume directly above the bath or shower, where the spray falls. Zone 2 is the next splash band, still close enough to catch a shower aimed badly. The fourth place is the rest of the bathroom, outside those named zones. Steam still reaches it, and a towel on a towel radiator still drips on the floor. You are still in a bathroom, and the listing has not chosen the wall.

England uses a separate phrase for notification. The special location, in the regulations cited here, is the 0.6 metre by 2.25 metre space, and that figure is about whether the electrical work must be notified. A heater just outside the line still needs a plate that matches the splash it will see. This research does not measure a taller shower rose or a shower with no tray.

The IP number you need to see

The code on the rating plate is a pair of digits, with an X where a digit was left out. IP44 means both digits are 4. The first 4 is protection against solid objects larger than 1 millimetre, and the second 4 is protection against water splashing from any direction. IPX4 keeps that same water digit, and the X means the solid-object part was not stated. For an IPX4 bathroom heater claim, you want that second digit on the plate, not only in a bullet. Heatingpoint's bathroom guide sets that IPX4 minimum for zones 1 and 2, and Herschel discusses IP44 in the same splash context.

IP24 is a weaker water claim, because its second digit means dripping water when the product is tilted. IP65 is a dust claim plus water jets, a stronger water digit on paper than 4. A patio heater can carry that stronger digit and still be the wrong object for a small wet room. The plate has to match the zone you are fitting, in the room you have.

Notifiable work in England

People search for this as a Part P special location question. Approved Document P is the England guidance cited here, and SI 2012/3119 is the instrument cited for the notification rule. Electrical Safety First describes notifiable work as a new circuit, the replacement of a consumer unit, or work in the special location. The special location recorded in this research is that 0.6 metre by 2.25 metre space around the bath or shower.

A new spur beside the bath sits in that third case, so you need a competent person who can certify notifiable electrical work. NICEIC's householder material on bathrooms and electrics is among the sources gathered here. The brief you hand over is the wall, the rating plate, and the instructions.

This page stops at that threshold. It does not choose a cable, a fuse, or a way to joint the heater.

A competent person can certify a circuit and still be handed a heater with the wrong IP rating. A correctly rated panel can still be notifiable electrical work because of where the cable has to go. The list above is England's. Scotland and Northern Ireland sit outside this research, so ask that country's building-control body which work they expect to hear about.

A bathroom socket is the wrong plan

Heatingpoint's bathroom guide says permanent bathroom heaters are hard-wired, and that a 13 amp socket is the wrong plan. For a heater meant to stay on the wall, the connection is permanent, and it belongs with the competent person already looking at the special location. A tower you wheel in from the landing is a different object. It still needs a rating plate that matches the floor you stand it on.

A hardwire towel radiator that lives on the wall is a fixed heater, with the same IPX4 minimum where zones 1 and 2 apply, and the same special-location question if you alter a circuit in that 0.6 metre by 2.25 metre space. Chrome and a timer leave zone 0 where it is.

The infrared heater comparison holds indoor panels, a freestanding indoor tower, and patio heaters in one shortlist. The most-reviewed indoor model there is the Warmlite WL42013, a floor tower, and that comparison shows no IP rating for it. A large set of 4.4 star reviews does not place it in zone 2. Patio models beside it can print a high IP number and still be the wrong shape for a bathroom.

If the heater arrives with a 13 amp plug, leave that plug alone, because cutting it off to bury the lead is electrical work and beside the bath it can be notifiable. Photograph the wall and take the plate to the visit.

Listings that only say bathroom

Give the amazon.co.uk page ten minutes before you pay. Read the bullets, then the details table, then the installation PDF if the seller has attached one. A clash that is easy to miss: the bullets say IP65 and the details table says IP24. IP65 claims dust tightness and water jets. IP24 claims dripping water when the unit is tilted. Averaging them into a homemade IP44 does not make the product ready for zone 2.

If the bullets and the table disagree, pause the order. Ask the seller, in writing, which rating was tested and which zones the instructions allow, and keep the reply. The rating plate and the instructions in the box outrank the bullet and the table. If the plate matches the weaker figure, that weaker figure is the one you own.

A patio heater with IP65 stays a patio heater when a review says someone tried it in a bathroom. Reviews describe one household. They do not move zone 0, and they do not move the special location.

Before you drill, write the brief in four steps, then stop. Each line is a check. The last one is where a competent person takes the cable.

1. Read the rating plate and write down the IP code and any zone wording printed on it.
2. Compare that code with the amazon.co.uk bullets and with the details table on the same listing.
3. If those sources disagree, get the tested rating in writing before you keep the heater.
4. If the circuit must be added or altered inside the 0.6 metre by 2.25 metre special location, book a competent person and hand them the plate.