Key Points Check thermostat settings, filters, and fuel supply first when your furnace blows cold air.Call an HVAC technician for issues like sensor failures, clogged burners, or duct leaks.Skipping ...
The Family Handyman on MSN
Boost Your Furnace Output With This Simple Trick
If you have a room that’s always a little colder in the winter or warmer in the summer, try this simple trick to boost your furnace’s blower speed.
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