Towel Warmer Dimensions: Sizes, Capacity and Mounting Height
Sizes for electric and hydronic towel warmers and heated towel rails, what fits on them, how high to mount them and what they draw from the outlet.
A typical wall-mounted towel warmer is 20-24 in (51-61 cm) wide and 25-40 in (64-102 cm) tall, and stands 4-5 in (10-13 cm) out from the wall. Compact plug-in models start around 16 × 22 in (41 × 56 cm); large ladder rails reach 24 × 48 in (61 × 122 cm) or more.
- Common width
- 20-24 in (51-61 cm)
- Common height
- 25-40 in (64-102 cm)
- Wall projection
- 4-5 in (10-13 cm)
- Electric power
- about 50-200 W
On this page
Towel warmer sizes by type
Towel warmers are sold by width × height. Width decides how a towel folds onto the bars; height decides how many towels or how much of each towel gets warm.
| Type | Width | Height | Projection / depth | Holds |
|---|---|---|---|---|
| Compact wall-mounted | 16-20 in (41-51 cm) | 22-30 in (56-76 cm) | 4-5 in (10-13 cm) | 1 bath towel or 2 hand towels |
| Standard ladder | 20-24 in (51-61 cm) | 30-40 in (76-102 cm) | 4-5 in (10-13 cm) | 2 bath towels |
| Large ladder | 24-32 in (61-81 cm) | 40-50 in (102-127 cm) | 4-6 in (10-15 cm) | 3-4 bath towels |
| Freestanding | 20-24 in (51-61 cm) | 33-38 in (84-97 cm) | 12-16 in (30-41 cm) base | 1-2 bath towels |
| Single bar (towel-bar style) | 18-30 in (46-76 cm) | 3-6 in (8-15 cm) | 4-5 in (10-13 cm) | 1 towel folded |
| Bucket / cabinet warmer | 13-16 in (33-41 cm) diameter | 16-20 in (41-51 cm) | Countertop or floor | 1-2 rolled bath sheets |
Ladder warmers usually have 6 to 12 horizontal bars. More bars at closer spacing give more heated contact, but a towel draped over the top bar only warms where it touches, so bar count matters less than width and height.
Matching the warmer to your towels
The towel size chart gives bath towels as 27 × 52 in (69 × 132 cm) and bath sheets as 35 × 60 in (89 × 152 cm). Folded onto a rail, they need these widths:
| Towel | Folded in half | Folded in thirds | Drop over a bar |
|---|---|---|---|
| Hand towel 16 × 30 in | 8 in (20 cm) | 5.3 in (14 cm) | 15 in (38 cm) |
| Bath towel 27 × 52 in | 13.5 in (34 cm) | 9 in (23 cm) | 26 in (66 cm) |
| Large bath towel 27 × 60 in | 13.5 in (34 cm) | 9 in (23 cm) | 30 in (76 cm) |
| Bath sheet 35 × 60 in | 17.5 in (44 cm) | 11.7 in (30 cm) | 30 in (76 cm) |
- Width: leave 2-3 in (5-8 cm) of rail beyond the folded towel so it does not slip off the end. A 20 in warmer takes a bath sheet folded in thirds or two bath towels folded in thirds side by side with little to spare.
- Height: to warm the whole drop of a bath towel, the rail needs about 28-32 in (71-81 cm) of bars below the top bar. Shorter rails warm the top half only.
- Bath sheets folded in half (17.5 in) need a 22-24 in (56-61 cm) wide warmer.
European heated towel rail sizes
In the UK and Europe, heated towel rails are often hydronic: they connect to the central heating or a mixed system and double as the bathroom radiator. They are sold in millimeters, and their heat output is rated to EN 442.
| Size (mm) | Size (in) | Typical bathroom |
|---|---|---|
| 400 × 800 | 15.7 × 31.5 | Cloakroom, en suite |
| 500 × 800 | 19.7 × 31.5 | Small family bathroom |
| 500 × 1200 | 19.7 × 47.2 | Family bathroom |
| 600 × 1200 | 23.6 × 47.2 | Larger bathroom |
| 500 × 1500 | 19.7 × 59.1 | Narrow wall, tall rail |
| 600 × 1800 | 23.6 × 70.9 | Main heat source in a large bathroom |
Pipe centers differ between makers, even for the same nominal width, so check the spec sheet before cutting pipes. Chrome rails give out noticeably less heat than painted rails of the same size, so a chrome rail that is meant to heat the room may need to be one size larger.
Where to mount a towel warmer
- Pick the wall. Next to the shower or tub, within arm's reach when you step out, and away from the door swing. The warmer projects 4-5 in, so keep it clear of walkways in narrow rooms.
- Set the height. A common placement is the bottom bar 12-20 in (30-51 cm) above the floor. On a 36 in tall warmer that puts the top bar at 48-56 in (122-142 cm), within easy reach for most adults.
- Find the power or plumbing. Plug-in models need an outlet within cord reach; hardwired models need a junction box behind the mounting position; hydronic rails need flow and return pipes.
- Check the manual's clearances. Makers specify distances from tubs, showers and the floor, and some specify which way up a rail with a built-in element or thermostat must be mounted.
On a wall shared with a vanity, keep at least 4-6 in (10-15 cm) between the warmer and the vanity edge or mirror so towels do not hang onto the counter. For vanity and mirror sizes, see the bathroom vanity dimensions and the mirror size guide.
In the US, bathroom receptacles must have GFCI protection under NEC 210.8, and a hardwired warmer should be installed by an electrician on a circuit sized for it. In the UK and EU, bathrooms are divided into zones (BS 7671 Section 701 and IEC 60364-7-701), and an electric rail must have the IP rating and position its zone allows. Follow the manufacturer's instructions and local code.
Power use: plug-in vs hardwired
Electric towel warmers are low-wattage heaters. Most draw between about 50 and 200 W depending on size; compact models sit at the low end and large ladder rails at the high end.
| Wattage | On 24 h a day | On 4 h a day (timer) |
|---|---|---|
| 60 W | 1.44 kWh/day, 43 kWh/month | 0.24 kWh/day, 7 kWh/month |
| 100 W | 2.4 kWh/day, 72 kWh/month | 0.4 kWh/day, 12 kWh/month |
| 150 W | 3.6 kWh/day, 108 kWh/month | 0.6 kWh/day, 18 kWh/month |
Plug-in suits
- Renters and retrofits with an existing outlet
- Freestanding warmers you can move
- Installation in minutes
Hardwired suits
- A clean look with no visible cord
- Wall timers or switches outside the wet area
- New builds and full remodels
Dry-element electric warmers heat up in roughly 10-30 minutes depending on the model. Oil- or fluid-filled electric rails take longer to warm up but hold heat after switching off. A timer that starts the warmer 30 minutes before you usually shower gives warm towels at a fraction of all-day running.
Frequently asked questions
How big a towel warmer do I need for folded 27 × 60 in towels?
A 27 × 60 in towel folded in thirds lengthwise is 9 in wide and hangs about 30 in when draped over a bar. A warmer at least 20 in (51 cm) wide holds two side by side, and about 32-40 in (81-102 cm) of height lets the drop touch the lower bars. Folded in half it is 13.5 in wide, so one towel per 20-24 in width.
What is the average size of an electric towel warmer in cm?
Most electric wall-mounted towel warmers are 50-60 cm wide and 65-100 cm tall, with a projection of about 10-13 cm from the wall. Freestanding models are usually around 50-60 cm wide and 85-95 cm tall.
How many towels does a towel warmer hold?
Plan on one bath towel per 20-24 in (51-61 cm) of width when folded in half, or two when folded in thirds. A 24 × 40 in ladder rail typically holds two bath towels plus a hand towel. Compact 16-20 in wide models hold one bath towel or two hand towels.
Do towel warmers use a lot of electricity?
Usage is wattage times hours. A 100 W warmer left on all day uses 2.4 kWh a day, about 72 kWh a month. Run on a timer for 4 hours a day, the same warmer uses 0.4 kWh a day, about 12 kWh a month.