Hello, I just got a new eco boiler, and am trying to work out what would be the cheapest way to run it. There is 2 of us in the house and it takes 1 hour to heat the boiler for showers for both and plenty for washing up. The boiler doesn't have any outside insulation but it is 27+ degrees room temp here, so what do you think? 24 hours keeping the heat all day and switching it's self on and off. We really don't need hot water all day long. Or 1 hour a day running constant? Cheers :)
Your boiler will burn more energy running on demand from cold starts, than it will maintaining a consistent temperature throughout the day. Some types sold in the US have a vacation setting that will prevent it from cycling while away, but this option should really only be used if you will be gone for a long time. I'll assume the 27 dg room temperature is Celcius and not Fahrenheit, which doesn't matter too much however your boiler will operate more efficiently if it has an insulating jacket for cold days. If you insulate it the boiler won't have to cycle as often. Not sure about eco-boiler if it's the type that employs a tank or has a coiled heat exchanger, and if so may not require an insulating jacket. These types of boilers are already engineered to be efficient appliances so you'll do yourself a favor by letting it work on it's own and not turning it off while you're away.
