Not to argue with anybody, but I feel 5000BTU is pretty low for Ohio. Probably they will have well over R19 insulation in the ceiling (required by FHA ), but with a design temperature of near 0 that's C O L D. I live in TX and a portable heater would be skimpy.
On the heat pump, they will not work below an outside temperature of 35 or so because the condensation on the outside coil would freeze up.
Luckily here in TX we can use a heat pump.
--- In DoIt_Yourself@yahoogroups.com, "larencorie" <larencorie@...> wrote:
>
> Posted by: "JohnG" grubemed@...
>
> > Northeast Ohio can get pretty cold. According to my old heat
> > calc book, the suggested design outdoor temperature in that
> > area is 10 degrees. If this is a former single car garage, about
> > 250 square feet, with insulated & finished side walls and 8' high
> > ceiling, R-11 in the sidewalls & R-19 in the ceiling with 1/2"
> >drywall all around, then you will need about 16,000 BTU
> > to maintain a 60 degree temperature difference (70 deg
> > inside when 10 deg outside).
>
> Hi John;
>
> In a quick calculation (done twice with the same results)
> I come up with only about 5000BTU/hr. (4900 including
> perimeter and infiltration losses for a two car garage, but
> not any windows. So, a little plug in heater might maintain
> the temperature but would not be able to warm up a cold
> room in an acceptable length of time during the heart of
> Winter. And, being able to allow the room to set cooler
> most of the time is likely to be an effective energy saving
> strategy, especially when coupled with something like a
> simple low-cost Solar air heater on the South wall.
>
> > I think some sort of fuel-burning heater would be more appropriate.
>
> That very well may be true. Expanding the living space even
> without electric heat may be pushing the capacity of the house's
> existing electric service to a point where it should be increased.
> A small mini-split heat pump such as the 9000BTU Fujitsu
> could supply both heating and cooling at a very high efficiency.
>
> Posted by: "archeryhoney" archeryhoney@...
>
> > I think maybe now we'll go with some kind of word burner
> > or pellet stove if we can find one reasonably priced and as we
> > already will have the wood because of the existing wood stove
> > in the living room that might work out best.
>
> Hello (name?)
>
> I will suggest the TimberWolf 2100 which you can buy
> online delivered in the $600 range (stand may be extra). It
> is very efficient at about 86%. Get it before the end of the
> year so that you will qualify for the 10% federal tax credit.
>
> > 2 windows in there already.
>
> -Laren Corie-
> Natural Solar Building Design Since 1975
> www.ThermalAttic.com
>
> Read my Solar house design articles in:
> -Energy Self-Sufficiency Newsletter-
> www.essnmag.com
>
> Home base-LittleHouses YahooGroup
> http://groups.yahoo.com/group/LittleHouses/
>
> Founder-WoodGas - Power from wood
> http://groups.yahoo.com/group/WoodGas
>
> Founder-RefrigeratorAlternatives YahooGroup
> http://groups.yahoo.com/group/RefrigeratorAlternatives
>
> My Music: www.MoonlightRed.com
>
> "In the councils of government, we must
> guard against the acquisition of unwarranted
> influence, whether sought or unsought,
> by the military industrial complex"
> Dwight D Eisenhower
>
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