How to use heating controls to reduce your energy bill
Posted by Tim Pullen on 15 February 2010 at 9:27 am
The importance of good controls on the heating system cannot be over-emphasised. There are two main reasons:
1. An analogue room thermostat in the lounge or hall will make the heating system heat the whole house to the same temperature as the air around the thermostat, for the whole time the heating system is on. So the bedrooms will be nice and warm all the time you are sitting in the lounge watching telly.
2. An analogue room thermostat gives only an approximation of the desired temperature. It is not uncommon for older thermostats to be as much as 4oC out.
There is a much publicised Government statistic which suggests turning the thermostat down 1oC will reduce the heating bill by 10%. We have no argument with that, except that most analogue thermostats are not that accurate.
What can be fitted will depend on the situation. A pre-existing heating system is likely to be divided into 2 circuits at best; ground floor and first floor. In that case 2 thermostats are better than one and digital is better than analogue.
The best option is a good quality digital zonal control system. This is best suited to new build and will allow different temperatures for each room and, perhaps more important, different timing for each room. So you won’t have to have the heating on in the bedrooms when you have no intention of going there.
If that is not possible then radiator thermostats at least allow different temperatures in each room. If you want to control the bills, you have to control the system.
If you have a question about anything in the above blog, please ask it in the comments section below.
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