Condensing boilers are about 1.5 to 3 gallons on average. If your oil boiler heats up the water it just sits there and will eventually lose it up the chimney.This efficiency isn't shown in the afue. This is called standby loss. Condensing gas boilers have very low loss, theres hardly any water in it.Warm start boilers like most oil
Read MoreCondensing boilers are about 1.5 to 3 gallons on average. If your oil boiler heats up the water it just sits there and will eventually lose it up the chimney.This efficiency isn't shown in the afue. This is called standby loss. Condensing gas boilers have very low loss, theres hardly any water in it.Warm start boilers like most oil
Read MoreCondensing boilers are about 1.5 to 3 gallons on average. If your oil boiler heats up the water it just sits there and will eventually lose it up the chimney.This efficiency isn't shown in the afue. This is called standby loss. Condensing gas boilers have very low loss, theres hardly any water in it.Warm start boilers like most oil
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