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HVAC
HVAC
Furnace won't ignite: safe checks before you call
Start with thermostat, power, filter and gas-valve checks.
HVACFurnace blowing cold air: safe checks before you call
Check the fan setting and filter before looking deeper.
HVACThermostat screen blank? Check these in order
Check batteries, power and the float switch in order.
HVACWhat temperature should I set my thermostat to?
Five quick questions, then the numbers to set for home, asleep and away.
HVACSmart thermostats: why ecobee is the pick
How ecobee and Nest run their schedules, and why ecobee is easier to set up and understand.
HVACAir filters: where they are, how to check them, when to change them
Where your furnace and AC filter is, the light test, how often to change it and how to get the right size.
HVACWhat does the MERV number on your filter mean?
Read the rating and check what your system can accept.
Free toolFilterPing
A free filter-change reminder: pick your own interval and add the dates to your calendar.