It needs a licensed gasfitter who knows the appliance. A syncFURNACE is not a conventional furnace, and the annual service includes a water system flush and descale that a standard furnace tune up does not cover. The combustion chamber and burner door insulation also contain refractory ceramic fibres, which Gradient identifies as a potential carcinogen requiring protective equipment, and the high limit safeties sit on a 115 volt line.

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