If your gas furnace keeps cycling on and then turning off within a minute or so, it might be the result of a dirty flame sensor. Most gas furnaces have a small sensor designed to shut off the furnace ...

The furnace is the hero of a house in winter. But there’s one tiny part inside it that most homeowners don’t even know exists, let alone realize they’re supposed to clean – the flame sensor. Left ...

Dear Jerry: I remodeled a first-floor, single-bedroom apartment in a 100-year-old house eight years ago. I fully insulated the unit, R-13 walls, R-38 ceilings, new low E, argon windows and insulated ...