Are you a homeowner or building manager?
Find a Contractor »

Hey Ed, Should the Fan Be On or Set to Auto


Posted on:

In this edition of "Hey Ed", Ed discusses whether a fan should be left on or set to auto in Manual D

Hey Ed, with airflow, should the fan be on or set to auto? That is an excellent question, simply for the fact that in recent weeks I’ve heard some very good discussions on the topic and I’m gonna say it’s a location-specific answer. If you live in an arid climate, if you want to run your fan all the time, have at it, there’s really no downside to it, as I see it. If you live in what is generally referred to as a wet coil climate, I’ve called it a green grass climate for a long time, or a humid climate, running the fan on on all the time will generally increase the humidity in the house due to reevaporated moisture that's on the evaporator coil when the compressor isn't running. That is something that is not desired. So, the simple answer is if it’s a humid or wet coil climate, leave the fan on auto and if you live in an arid climate by all means like that fan run as much as you want and that’s the way I see it!

In this edition of “Hey Ed”, Ed discusses whether a fan should be left on or set to auto in Manual D

Ed Janowiak is the Manager of HVAC Design Education at ACCA.


Have a question you'd like to see Ed answer?

Send it on over by using the form below.


Posted In: Hey Ed, Technical Tips

Looking for an ACCA QA Accredited Contractor?

Are you a homeowner or building manager?

BECOME AN ACCA MEMBER

join now

PLUS It's Risk Free!