Quote:
Originally Posted by oil pan 4
The furnace must be sized for unusualy cold weather events unless you have robust backups.
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Our corn / pellet stove was right sized for 5-15F, it would keep the house warmish down to -20F but its efficiency fell off a cliff running 100% continuously and ash output went up massively.
We would sort of run both gas and pellets in very cold weather which has the benefit of warmer floors while not going bankrupt on pellets