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- Log boilers are generally oversized because they are designed to burn periodically "loading" a buffer tank.
- Buffer tanks are always required, giving storage of heat for use when the boiler is not running.
- Space must be allowed for this. Typically a buffer for a domestic situation will be at least 2m high and probably 1.5m diameter or more. It will also weigh up to 2.5tonnes when full!
- Gasifying boilers are generally slightly more expensive but also more efficient. They do need the right conditions to make use of the efficiency gains so system design needs to be carefully considered
- All log boilers need dry and consistent fuel to produce optimum efficiency results. Wet logs waste heat evaporating water and produce more soot and tar in the boiler and flue
- Fuel needs to be stored dry for up to 2 years. Budget on 1.5 tonne per kW of heat load per year. (1 tonne of log occupies about 1.5m3)
- If you would like to have the option of relaxing occasionally you could always specify a pellet burner to allow you that flexibility and also offer a warm house on your return from a break!
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