
A warm, green towel, served medium-well
A friend of mine stopped by yesterday on his way home from shopping for a heated towel rail. He had been fretting for years at his wife’s extravagant use of the tumble dryer simply to warm and dry a single towel before bathing. He worries that tumble dryers use vast amounts of electricity. I used to have a similar affliction, until my tumble dryer broke down last year. I simply didn’t bother to repair it, and I have been a happy man ever since.
The towel rail my friend wants to buy, he told me, uses about as much electricity as a single light bulb, or 100 watts. Though my friend is a former maths teacher, I wasn’t convinced that he had done his calculations.
Heated towel rails are designed to run constantly; they generally don’t come with timers or thermostats, other than a safety shut-off to prevent overheating. If he runs this towel rail constantly for a year it will consume 876 kilowatt hours of electricity and add nearly a ton of carbon dioxide to the atmosphere. In my house, that would mean a 10 percent jump in total consumption most months. And at the rates just proposed by the Johannesburg municipality for the coming year, the towel rail would increase his annual electricity bill more than R350. If rates triple over the next several years, as predicted by some experts, the annual cost would approach R1000.
Tumble dryers use roughly 2000 to 3000 watts. That’s terrible. But presuming that his wife doesn’t leave the tumble dryer running all day to keep her towel warm and dry, it might use less electricity than the towel rail. Run a 2500 watt tumble drier for a 30 minutes a day and it will use less than half the electricity—and contribute half the carbon dioxide—of a round-the-clock towel rail.
That’s still not good for the environment, however. The almost-environmentally-friendly solution is to have an electrician install the towel rail with a switch and a timer and then use it a few hours a day in the winter and turn it off entirely in the summer. The hundreds of rand you will save each year will easily pay for the timer. The problem with this solution is that it contributes to load-shedding because it will add to your electricity consumption at the exact morning and evening peak hours when Eskom has no spare capacity.
If you really can’t see a way to keep your spouse happy without warm towels—and I am very conscious that sometimes we must compromise to avoid marital misery—I suggest trying the microwave oven. WARNING: YOU CAN BURN YOUR SKIN OR EVEN START A FIRE IF YOU HEAT A TOWEL IN THE MICROWAVE FOR TOO LONG. I would not even attempt this in a microwave without a digital timer, and children should not be allowed to try this unsupervised. For my 750-watt microwave oven, 30 seconds warms a small towel nicely and 45 seconds heats a large bath-sheet towel to perfection. Thirty seconds at 750 watts is a mere 2 percent of the electricity used by a 100-watt towel rail in 3 hours. If you don’t have a doting lover on hand to run the warm towel from the kitchen, warm two towels for 30 seconds each and wrap one inside the other to keep warm while you bath or shower. Just because I’m opposed to global warming doesn’t mean that I don’t support wet-body warming.
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March 25th, 2008 at 6:12 pm
A better option is to run the hot water for your shower through your towel rail before it reaches the shower. This way it will be heated by the time you have finished showering, without incurring extra cost or electricity consumption.
Also, try running the hot water pipe behind your mirror to prevent it fogging over.
April 9th, 2008 at 8:23 am
This is a fascinating idea. Have you tried it, or do you know anyone who has? It would not be cost-free, however, if it requires diverting the pipes from a straight line between the geyser and the shower. It would use more water while you wait for the hot water to reach the shower and more hot water by giving the water more time to cool down before it reaches the shower.
April 9th, 2008 at 10:31 am
Ummm, heated towel rails do run constantly, if the switch that supplies the power to them is “ON”.
They are normally connected to a separate switch, or the are enabled when the bathroom lights are switched on.
So they don’t really use much power as they are hardly ever switched on!
April 9th, 2008 at 12:13 pm
Greg,
You may know more than I do about how electricians in South Africa tend to install heated towel rails, and you may know more than I do about how people who own them switch them on and off. Personally, I have my doubts that the average person who owns one of these just switches it on briefly. I find it hard to imagine that one of these devices would warm a towel sufficiently in the amount of time it takes to finish a shower. Certainly it was the understanding of my friend after his conversation with a salesperson that it would be left on full-time. If you have evidence that I misunderstand the situation, let me hear it.
April 9th, 2008 at 4:57 pm
I just had a look at some units online, and many are designed to be left on, permanently! The ones I have used heated quite quickly (about 10 mins)… and weren’t normally left on.
So, it seems like there are different types of heated towel rails
The ones that stay on seem absurd!
April 22nd, 2008 at 3:23 pm
It seems that there are two schools of thought when it comes to heating towel rails. The most popular seems to be the fluid filled type which are fitted with ‘thermostatic’ elements which apparently automatically control surface temperatures. I am informed that these heated towel rails, although left on permanently, only use power when they need to. So, although they may use a 100W element, effectively use the equivalent of a 50W appliance.
To remain ‘green’, a fluid filled heated towel rail fitted with a thermostatic element make the most sense. If you go a step further and add a timer, you have the ideal solution!
Warm, dry towels for less cost than running a tumble dryer intermittently.