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Replacing oil fired burner with on-demand LP water heater in forced air system

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Replacing oil fired burner with on-demand LP water heater in forced air system socoast 10-20-2007
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Posted by on October 20, 2007, 8:41 pm
Would it be possible and more efficient to use an on-demand LP hot
water heater, like the Bosch 2400LP? Or, should I just shut off the
oil burner when we are away?

I have a 14 year old heating system. It is an oil fired burner, 100
gal hot water tank, and forced air.
Hot water flows into copper coils, and air is blown over them to heat,
then forced into ductwork and floor vents.(at least I think that's how
it works!) It also supplies the household hot water. The burner and
boiler are located in an outside attached small room with a 4" vent
going up through the roof.

I have 3 heating zones in the house.

The price of oil has tripled, raising my heating bill to $600-$1200
per month in the heating months, for the 175 + gals of oil I use.

I keep my thermostat set to 62 at night and 65 during the day (and
hope for solar gain), and only heat 1 zone. But, keeping all that
water hot 24/7 is just not possible anymore with oil at $3.40/gal.

There are only two of us, so the domestic water demand is low compared
with the hot water for the forced air system.
I live in an area that does not freeze in the winter, temperatures
rarely go below 40 at night, and almost never go below freezing.

I've got to do something before this oil burner sucks up my savings!

thanks for any advice you have.


Posted by on October 20, 2007, 8:51 pm

> Would it be possible and more efficient to use an on-demand LP hot
> water heater, like the Bosch 2400LP? Or, should I just shut off the
> oil burner when we are away?
>
> I have a 14 year old heating system. It is an oil fired burner, 100
> gal hot water tank, and forced air.
> Hot water flows into copper coils, and air is blown over them to heat,
> then forced into ductwork and floor vents.(at least I think that's how
> it works!) It also supplies the household hot water. The burner and
> boiler are located in an outside attached small room with a 4" vent
> going up through the roof.
>
> I have 3 heating zones in the house.
>
> The price of oil has tripled, raising my heating bill to $600-$1200
> per month in the heating months, for the 175 + gals of oil I use.
>
> I keep my thermostat set to 62 at night and 65 during the day (and
> hope for solar gain), and only heat 1 zone. But, keeping all that
> water hot 24/7 is just not possible anymore with oil at $3.40/gal.
>
> There are only two of us, so the domestic water demand is low compared
> with the hot water for the forced air system.
> I live in an area that does not freeze in the winter, temperatures
> rarely go below 40 at night, and almost never go below freezing.


Rarely below 40, sounds like a heat pump is in order!



Posted by Zyp on October 20, 2007, 11:42 pm
kjpro @ usenet.com wrote:
>> Would it be possible and more efficient to use an on-demand LP hot
>> water heater, like the Bosch 2400LP? Or, should I just shut off the
>> oil burner when we are away?
>>
>> I have a 14 year old heating system. It is an oil fired burner, 100
>> gal hot water tank, and forced air.
>> Hot water flows into copper coils, and air is blown over them to
>> heat, then forced into ductwork and floor vents.(at least I think
>> that's how it works!) It also supplies the household hot water. The
>> burner and boiler are located in an outside attached small room with
>> a 4" vent going up through the roof.
>>
>> I have 3 heating zones in the house.
>>
>> The price of oil has tripled, raising my heating bill to $600-$1200
>> per month in the heating months, for the 175 + gals of oil I use.
>>
>> I keep my thermostat set to 62 at night and 65 during the day (and
>> hope for solar gain), and only heat 1 zone. But, keeping all that
>> water hot 24/7 is just not possible anymore with oil at $3.40/gal.
>>
>> There are only two of us, so the domestic water demand is low
>> compared with the hot water for the forced air system.
>> I live in an area that does not freeze in the winter, temperatures
>> rarely go below 40 at night, and almost never go below freezing.
>
>
> Rarely below 40, sounds like a heat pump is in order!

Socoast;

Sounds like a Heat Pump with a COP of 300 would save you a ton of $$$$

Contact your local, licensed professional about the cost of a Geothermal HP
or even an air over HP.

--
Zyp



Posted by on October 21, 2007, 12:31 am

> kjpro @ usenet.com wrote:
> >> Would it be possible and more efficient to use an on-demand LP hot
> >> water heater, like the Bosch 2400LP? Or, should I just shut off the
> >> oil burner when we are away?
> >>
> >> I have a 14 year old heating system. It is an oil fired burner, 100
> >> gal hot water tank, and forced air.
> >> Hot water flows into copper coils, and air is blown over them to
> >> heat, then forced into ductwork and floor vents.(at least I think
> >> that's how it works!) It also supplies the household hot water. The
> >> burner and boiler are located in an outside attached small room with
> >> a 4" vent going up through the roof.
> >>
> >> I have 3 heating zones in the house.
> >>
> >> The price of oil has tripled, raising my heating bill to $600-$1200
> >> per month in the heating months, for the 175 + gals of oil I use.
> >>
> >> I keep my thermostat set to 62 at night and 65 during the day (and
> >> hope for solar gain), and only heat 1 zone. But, keeping all that
> >> water hot 24/7 is just not possible anymore with oil at $3.40/gal.
> >>
> >> There are only two of us, so the domestic water demand is low
> >> compared with the hot water for the forced air system.
> >> I live in an area that does not freeze in the winter, temperatures
> >> rarely go below 40 at night, and almost never go below freezing.
> >
> >
> > Rarely below 40, sounds like a heat pump is in order!
>
> Socoast;
>
> Sounds like a Heat Pump with a COP of 300 would save you a ton of $$$$
>
> Contact your local, licensed professional about the cost of a Geothermal
HP
> or even an air over HP.


Since he has a 40 degree temp, the extra cost for a geo would be a waste of
money.



Posted by Bob Pietrangelo on October 21, 2007, 9:41 pm

>> Contact your local, licensed professional about the cost of a Geothermal
> HP
>> or even an air over HP.
>
>
> Since he has a 40 degree temp, the extra cost for a geo would be a waste
> of
> money.
>
WHY?



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