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Home Repair - - If it ain't broken, don't fix it. Otherwise look here.
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Posted by miker on January 4, 2007, 10:57 am
I have an old oil hot water furnace and I was wondering if I could reduce
the amount of time and duration it fires up if I added a hot water tank
before or after it? My father in law has a newer, multi zone one and I
noticed he has a hotwater tank beside his. I noticed his doesnt come on as
often as mine does.
My old one is dude for replacement in the next few years and I was also
wondering in what way a new one is better?
mike
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Posted by barry on January 4, 2007, 1:50 pm
miker wrote:
show/hide quoted text
> I have an old oil hot water furnace and I was wondering if I could reduce
> the amount of time and duration it fires up if I added a hot water tank
> before or after it? My father in law has a newer, multi zone one and I
> noticed he has a hotwater tank beside his. I noticed his doesnt come on as
> often as mine does.
> My old one is dude for replacement in the next few years and I was also
> wondering in what way a new one is better?
> mike
Actually, all other things being same, the higher the duty cycle of
your
burner, the higher the efficiency, for a couple of reasons. The tank is
red herring.
New unit, properly sized and set up, will likely be much more
efficient.
What you can do right now: install servo-controlled flue damper.
Insulate
and seal house. Reduce heating to areas that don't need it. Maybe
reduce
spray-tip size a bit, to increase duty-cycle, in consultation with
service
tech.
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Posted by Edwin Pawlowski on January 4, 2007, 9:15 pm
show/hide quoted text
>I have an old oil hot water furnace
No, you don't. You have an oil fired boiler. Furnaces heat air, boilers
heat water.
and I was wondering if I could reduce
show/hide quoted text
> the amount of time and duration it fires up if I added a hot water tank
> before or after it? My father in law has a newer, multi zone one and I
> noticed he has a hotwater tank beside his. I noticed his doesnt come on as
> often as mine does.
I don't have any personal experience with them, but you can start
researching here
http://www.amtrol.com/boilermate.htm
In theory, a larger reservoir requires less cycling, but it still takes a
given amount of energy to heat water to a given temperature. You want to do
it as efficiently as possible.
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> the amount of time and duration it fires up if I added a hot water tank
> before or after it? My father in law has a newer, multi zone one and I
> noticed he has a hotwater tank beside his. I noticed his doesnt come on as
> often as mine does.
> My old one is dude for replacement in the next few years and I was also
> wondering in what way a new one is better?
> mike