On past trips, I’ve made the mistake of underestimating these other charges, imagining that they’re probably notthatmuch more expensive than in the States. Not surprisingly, I’ve experienced sticker shock when my credit card bill arrives and I add it all up. Related:Search and...
Example:If you put$100 worth of gasin an 80 AFUE furnace, it will be able to produce$80worth of heating output. Compared to that, AFUE 94 furnace will produce$94worth of heating output with that same $100 gas. Basically, you are saving $14 per every $100 worth of gas if you cho...