The heat output a room needs, in BTU and watts, from its size and how well it holds heat.
A rule of thumb, not a heat loss survey. Older solid-wall properties need appreciably more than this suggests.
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The heat output a room needs, in BTU and watts, from its size and how well it holds heat.
A rule of thumb, not a heat loss survey. Older solid-wall properties need appreciably more than this suggests.