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In my topic Cause & effect (funny story) I mentioned how I worked around a problem with heating a single UFH zone with 30kw heat only boiler. That all worked out but I also face a similar problem when choosing a heating system for a newly extended outbuilding.
This extension is on a double garage & workshop separate from the house. It already has a gas supply line (I had it put in when the house was built just for this eventuality) so I'm inclined to use that although society seems to be heading in a different direction these days. Already installed is a single UFH zone on the ground floor. This room is 24m2 although some area is taken up with a staircase. Upstairs is a room-in-roof with a floor area of 30m2. First-fix pipework for radiator(s) has also been laid up there.
Energy-wise the areas to be heated are reasonably well-insulated (150mm PIR in roof, 100mm in floor, 75mm in cavity walls) and the windows are all double glazed. I estimate that we might need as little as 5kw for our intended uses. A 2kw eclectic convector has been maintaining an acceptable level although so far this year outside temperatures here have been at least a few degrees above freezing at worst. So I would like some advice here on choosing a suitable heat source that would make the most economic sense..? And if gas is the answer, do boilers modulate down to lower levels these days?
This extension is on a double garage & workshop separate from the house. It already has a gas supply line (I had it put in when the house was built just for this eventuality) so I'm inclined to use that although society seems to be heading in a different direction these days. Already installed is a single UFH zone on the ground floor. This room is 24m2 although some area is taken up with a staircase. Upstairs is a room-in-roof with a floor area of 30m2. First-fix pipework for radiator(s) has also been laid up there.
Energy-wise the areas to be heated are reasonably well-insulated (150mm PIR in roof, 100mm in floor, 75mm in cavity walls) and the windows are all double glazed. I estimate that we might need as little as 5kw for our intended uses. A 2kw eclectic convector has been maintaining an acceptable level although so far this year outside temperatures here have been at least a few degrees above freezing at worst. So I would like some advice here on choosing a suitable heat source that would make the most economic sense..? And if gas is the answer, do boilers modulate down to lower levels these days?
