I have a customer who insists if she runs her Gas Fireplace 24x7 her house stays warm and her furnace only cycles on cold days. (-15 C and below).
I have a couple questions,
1. i know that they should not be used a a primary heat source and as more of a decorative appliance but could someone please re-state the reasons as to why so i can let her know?
2. She has a cold air return right in front of her fireplace and leaves the furnace blower fan on, this may distribute some heat from the fireplace but i would think that the upstairs rooms do not get enough heat from this? does anyone know? i think there was a mythbusters article once produced. . .