Will Running Furnace Fan Help Humidity. Leaving that fan on 247 is great for cleansing allergens from the air and can help people with allergies. However they can play a role in mitigating it.
If you have an older less efficient furnace it could be cost-prohibitive to keep the fan running all the time. Less frequent starts and stops of the fan can reduce the stress from startup and potentially help extend its lifespan. I run my fan constantly in the winter and when I am air conditioning and it certainly does seem to help with the humidity.
This blower motor should be delivering 1235 CFM.
Right now the humidity in my house is 20 a little low. Keeping the fan running can circulate the air if you have cold or hot spots like a bedroom above a garage that may be colder in the winter. On moderate days when the inside temp stays in the sweet zone having the fan run for 15minhr keeps it from getting stuffy. Relying on your air conditioner to tackle.
