Does it work out cheaper to have the central heating 'on' all the time and keep a constant heat or is it best to have it on timer and heat the place up from cold twice a day? Same goes for the hot water tank I guess..
Depends.... on the size of your house, how much insulation and what sort of boiler and central heating system ect.
Keep it on the timer and have it coming on 3 times a day when it's mild wintry weather.
Typical settings I set mine to are:
0700-800
1000-1400
1545-2300
When it gets REALLY COLD (3 deg - minus whatever), run it continuously! Keep your doors shut (inner and outer doors) to keep heat in the rooms. Fit thermostatic radiator valves, and if possible have your boiler serviced regularly. Fit a combi-boiler if possible if you haven't already got one and you'll save loads - combi boilers use about half the energy of old condenser type boilers.
Also, if you can, run it at exactly 20 deg C. DON'T touch that stat - leave it alone. Digital stats are much better and more accurate, fit one if you haven't got on and that might save you a bit as well.
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Good luck.
Need more info. to advise definitively e.g are you in the house all the time or out in the day. It is definitely not sensible to keep the place more than cool if you are all out. There are many web sites with good energy tips, try your power supplier.
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Personally, I advise wearing a pullover or similar in the house. Best energy saver I ever did was having my cavity walls insulated 2 years back. I heat my house for perhaps an hour or 90 minutes before I go to work, turn heating off, and when I come back in its still tolerable even on a cold day, and takes 30 mins to warm up again. Brilliant! Insulation is highly subsidised now, so you'll get a payback in a couple of years, maybe less if fuel costs stay this high. It's free if you are over 65 (or maybe 70) or on various benefits. Check it out, again your power supplier can advise, or try the local authority.
It will not help much if you have major drafts, of course, so make your house nice and cosy all round.
Try thinking of your heating as a 'real fire'. Would it be cheaper to keep the fire lit 24/7, constantly adding wood, or to only light it and stoke it up when you needed the heat? Pretty obvious, isn't it?
For the water, I have a 'combi' on demand boiler i.e, only heats it when I need it. Much cheaper, but not good for more than 2 people in a house, they can't cope with the demand from several hot taps at once, unless they have improved massively since I had mine (12 years ago).
Best to keep it on all the time and run it off the thermostat. Especially with the weather as it is now. To heat up from cold twice a day takes more energy than keeping at a constant heat. I do the same for the hot water. In summer, leave the hot water as it is, but I just then totally switch the heating off.
I am going away in four weeks, so the heating is still left on, but turned right down. My neighbour has a key, so if it gets really cold, then can come in and turn the heating up a bit.
Timer unless you have absolutely fantastic insulation'
Keep it on low for long periods, so iv heard
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