Keith,
Any suggestions as to how to get the furnace to pump out HOT air as opposed to luke warm? 22+ year old furnace, you were out doing work on it in the early part of summer and said everything is great.
Noticed the last few weeks the furnace almost struggles a little bit to get the house actually very warm as opposed to comfortable of 22 degree's. Cheap filter replaced regularly.
Should my thermostat be set to auto or on for the fan setting? I have an old school mercury thermostat that slides up and down.
Many thanks !
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