If you’re currently reading this in San Diego, or somewhere equally warm, then you might want to skip this post, but if you’re in a somewhat cooler climate, December is a good time to start thinking about keeping warm. Particularly if some of the longer range predictions about this being an especially cold winter turn out to be true.
If you’re sat at home, how warm is your room ?
If you don’t know, consider spending £5 to get yourself a room thermometer this Christmas.
Room temperature is normally taken to be 20C , with typically quoted values ranging from 18 – 21C, the range in which most of us will feel fairly comfortable. Below this increased health risks begin to occur, below 18C most people will begin to experience some discomfort, while below 16C there is an increased risk of respiratory disease. Below 12C there is an increased risk of stroke and heart attack, and below an ambient living temperature of 9C hypothermia is a possibility. An extra 27,000 deaths occur over the winter in the UK, mostly of the elderly.
So it’s vitally important for both our health and our comfort to keep ourselves warm during the cold weather, but on the other hand we might be concerned about wasting both energy and money. Whether we’re motivated by reducing our carbon footprint or our energy bill (in my case it’s both) it’s important we manage to keep warm as efficiently as possible.
Here are a few tips – you might want to share them with more elderly family, friends or neighbours.
1 – ONLY HEAT THE ROOMS YOU USE
It seems obvious, but a if you have a central heating system controlled by just a single thermostat, that’s probably what you’re doing. Fitting room thermostats or radiator thermostat valves will let you heat just the rooms you use most – ie: not the spare bedroom, front room, conservatory etc.
2 – ONLY HEAT YOUR HOME WHEN YOU’RE THERE
Again, another ‘no-brainer’, but a surprising number of homes with central heating systems don’t have effective timer controls. Check your controls to make sure the heating is only on when you’re there.
3 – TRACK DOWN AND DEAL WITH DRAUGHTS
A draught is ventilation in the wrong place (and vice-versa). Go draught hunting and use draught excluders, letterbox and keyhole covers, insulation strips, thick curtains and similar to deal with them. It your home is particularly draughty you might want to consider using a thermal camera to identify them (though it might be a good idea to get advice before hiring one). Remember though that it’s best to leave at least some ventilation somewhere in the house, to allow exchange of air.
4 – KEEP YOUR HOME DRY
Some ‘how to keep warm lists’ suggest letting warm bath water cool in the bath etc as a good idea to help heat your home. Generally speaking this isn’t a good idea, for two reasons. Firstly, moist air takes more energy to heat than dry air does – so the more water vapour you have in your home, the colder it will be (for a given amount of heating). Secondly, the water vapour doesn’t magically disapear – it just condenses on cold surfaces, like exterior walls and windows, often giving rise to black mould, which can become a significant health hazard. Avoid drying wet clothes on radiators without adequate ventilation, and make sure steam from cooking is properly vented.
5 – CONTROL NATURAL HEATING AS BEST YOU CAN
Opening the curtains during the day to let in sunlight, and closing them as it starts to go dark, in order to retain heat might not make a huge difference in most homes, but it will help, and could be quite beneficial if your home has a conservatory, or other large expanse of exterior glass. Obviously the better insulated your curtains are the more effective they will be.
6 – WEAR WARM CLOTHES
We wrap up warm when we go out in the cold, most of us could do a lot better at wearing warmer clothes inside as well. There are all sorts of suitable, comfortable ‘lounge-ware’, from jogging trousers and jumpers, to socks, thermals and even hats. I can confirm the currently popular onesies are very effective for keeping warm (though far too embarrassing to answer the door in) ! Sitting under a blanket to watch TV is also a good idea.
7 – LOOK AFTER YOUR SELF
Your body keeps warm by using the food you’ve eaten, so if your home is cold it’s especially important to make sure you’re eating well, preferably with plenty of hot meals and hot drinks, while alcohol tends to lower core body temperature. A spot of exercise might also be a good way to help keep warm.
Photo by Ruben Laguna via Flickr