Can a restrictive air filter force the furnace to use more gas?
My furnace was installed Dec 14th and my first bill was below 100.00 mark.
My next bill was over double. Now mind you it’s normally colder in Jan then Dec around here (NJ).
My last bill for Feb dropped over 40.00 from Jan. All meter reads were done by me. The temp is on hold (71)
Bryant 90I 80,000 BTU.
When the furnace was first installed, they had the el cheapo 1 inch fiberglass filter. Sometime in Jan I switched to a 3m 1 inch 600 rated.
Once my filter box was resized correctly I was able to put in a Merv 12 4 inch filter which was in Feb.
So basically I’m thinking the 3m filter forced the furnace to use more gas. I know that a restrictive filter can use more electric because the Evolution will kick the fan up higher to meet the right CFM’s. I’m just not sure how to explain how it would use more gas.