On Nov 26, 5:17*pm, chaniarts wrote:
On 11/25/2012 2:40 PM, Normin wrote:







If your current yearly heating bill is $1000 and you have an 80%
efficient furnace,

$800 is used for heat and $200 is wasted out the exhaust.

With a 95% efficient furnace,

$800 is still used for heat but only $42 is wasted out the exhaust.

Your yearly heat bill drops to $842 yielding a $158 per year savings.

Over the next 15 years you'll save $2370 in fuel. *If fuel prices go up,
you'll save even more.

Can you really afford an 80% efficient furnace?

you're installing it in a vacation house, that you use every summer, and
perhaps 2-3 weekends of the year in the winter time.

so you save $10 over the course of a year. still a good buy?- Hide quoted text -

- Show quoted text -

It's not even a good idea accepting the numbers as given.
The savings stated were $2300 over 15 years. That
new furnace is gonna cost $4,000 TODAY. A new furnace
today has a life expectancy of 15 years, maybe 20.
So, you'll likely never break even. And that doesn't
even factor in the time value of money.