Best Heated Toilet Seat UK: The Cheap Upgrade Nobody Regrets

Of all the functions bundled into smart toilets, the heated seat is the one owners consistently say they would miss most — which is awkward, because it is also the cheapest to buy on its own. A standalone heated seat costs a fraction of a washing seat and delivers the part of the experience you notice every single morning. This guide is based on desk research: manufacturer specifications, UK retailer listings and owner reviews rather than first-hand testing. Below you will find the two ways to get a heated seat, running costs, the wiring rules, and what to check before ordering.

Quick Picks

Two Ways to Get One

A standalone heated seat. These look like an ordinary toilet seat with a power lead. A thermostat holds the seat at a set temperature, usually with two or three levels. Around £50–£150. No wash function, no dryer, no remote. For a lot of households this is the entire upgrade they wanted.

A heated seat as part of a bidet seat. Every electric bidet seat includes seat heating, so if you were considering a wash function anyway, the heating comes free with it. From around £250 for a mid-market electric seat up to £1,500 for a TOTO Washlet.

There is no meaningful third option. Non-electric mechanical bidet seats do not heat, because there is nothing to heat them with.

Running Costs

Seat heating is a low-wattage, high-duty-cycle load — a small amount of power drawn most of the time rather than a lot occasionally. Typical seats draw in the region of 40–60W while actively heating, and far less once up to temperature because the thermostat cycles.

That puts a continuously-on heated seat somewhere in the order of a few pounds a month at typical UK electricity rates, depending on the temperature setting and how well insulated the bathroom is. Two things reduce it materially:

• Eco or timer modes, which drop the temperature overnight or between typical usage hours. Most seats above the very cheapest have this.
• A lower setting. The top setting on most seats is warmer than most people want. The lowest is usually enough to remove the shock.

The Wiring Rules Matter Here

This is the part that turns a £70 seat into a £250 project, and it is not optional.

UK wiring regulations restrict socket outlets in bathrooms. You cannot simply run an extension lead to the toilet. The standard solution is a fused connection unit installed by a qualified electrician, frequently mounted outside the bathroom and spurred through the wall to a flex outlet near the pan.

Some points worth knowing:

• Get a quote first. The electrical work commonly costs more than a budget heated seat.
• RCD protection is expected for bathroom circuits.
• Zones matter. Where the connection point can go depends on its distance from the bath and shower. An electrician will know; a general handyman may not.
• If your bathroom already has a shaver socket, that is not a substitute — shaver sockets are isolated low-power outlets not intended for this.

If the wiring cost kills the idea, a non-electric bidet seat gives you the wash without power, but nothing gives you heating without it.

What to Check Before Ordering

Pan shape. British pans are usually round or a short D shape rather than the elongated American standard. Buying the wrong shape is the most common return reason.

Fixing hole centres. Measure the distance between the two seat bolt holes rather than assuming a standard.

Cable exit and lead length. The lead has to reach your flex outlet. Check which side it exits and how long it is.

Soft close. Standard on most heated seats and worth having.

Thermostat levels. Two or three settings plus an off position is the useful minimum. Single-temperature seats are often too warm.

Ingress rating. A bathroom appliance should carry an appropriate IP rating for its zone; reputable brands publish it.

Is It Worth It?

The honest case for a heated seat is that it is a small, cheap, daily pleasure rather than a functional improvement. It does not clean anything or save water. What it does is remove the one genuinely unpleasant moment of a cold British morning, and owner reviews are unusually consistent on that point — this is the feature people mention when asked what they would keep.

The honest case against is the wiring. If your bathroom has no suitable supply and an electrician quotes a few hundred pounds, the maths on a £70 seat changes completely. Get that quote before you buy anything.

FAQ

How much does a heated toilet seat cost to run in the UK? Typical seats draw around 40–60W while heating and much less once at temperature, since the thermostat cycles. In practice that is on the order of a few pounds a month at normal UK electricity rates. Using the eco or timer mode and the lowest comfortable temperature setting brings it down further, and the lowest setting is usually plenty.

Can I install a heated toilet seat myself? The seat itself is a simple swap, but the electrical supply is not DIY. UK regulations restrict sockets in bathrooms, so you need a fused connection unit fitted by a qualified electrician, often spurred from outside the room. Budget for that before buying — on a cheap seat the wiring frequently costs more than the product.

Do heated toilet seats also wash? Standalone heated seats do not — they only heat. Every electric bidet seat includes seat heating alongside the warm-water wash, starting around £250. If you want both, buy a bidet seat rather than a heated seat; if you only want warmth, the standalone version is much cheaper.

What temperature should a heated toilet seat be set to? The lowest setting is enough for most people. Manufacturers’ top settings run warmer than is comfortable for extended sitting, and running at maximum uses more power for no real benefit. Start low, and only step up if the seat still feels cold in an unheated bathroom in winter.