[Xringer]

Getting the average temperature here: Weather Station History : Weather Underground

December 2009:
Day of Month / kWh / Average degrees F.

1, 9.26, 38
2, 7.23, 44
3, 2.88, 60
4, 5.62, 49
5, 9.17, 36
6, 10.5, 27
7, 12.9, 29
8, 12.2, 29
9, 9.23, 36
10, 8.77, 32
11, 14.2, 23
12, 14.3, 24
13, 12.9, 28
14, 9.95, 37
15, 8.58, 40
16, 10.4, 29
17, 16.9, 16
18, 14.5, 16
19, 11.5, 20
20, 11.5, 21
21, 14.2, 25.3
22, 15.2, 23.3
23, 14.8, 15.2
24, 8.17, 28.7
25, 13.8, 27.1
26, 10.5, 36.2
27, 8.35, 44.6
28, 13.8, 31.7
29, 15.3, 21.0
30, 10.5, 17.0
>>>March 2010, w/ new outdoor unit<<<
26, 8.56, 38.8
27, 13.9, 26.0
28, 9.37, 37.2
29, 7.05, 49.9
30, 8.05, 46.8
31, 7.82, 45.8
>>>April 2010, w/ new outdoor unit<<<
1, 5.00, 51.1
2, 4.45, 50.9
3, 2.45, 59.8
4, 2.89, 61.9
5, 1.14, 58.9
6, 2.72, 56.2
7, 2.67, 65.9
8, 2.54, 55.0
9, 5.26, 48.0
10, 6.02, 47.3
11, 2.09, 55
12, 2.72, 48
13, 5.68, 44
14, 3.25, 49.8
15, 3.55, 47.4
16, 10.3, 40.0 rain
17, 10.0, 39.8 rain
18, 7.59, 43.5
19, 5.26, 47.4
20, 3.58, 53.4
21, 2.35, 56.4
22, 2.57, 56.3
23, 4.07, 51.2
24, 3.31, 53.3
25, 2.26, 56.0
26, 3.85, 51.1
27, 5.71, 45.2
28, 9.23, 39.0
29, 6.01, 48.2
30, 2.12, 56.6

Averaging about 74 cents a day for April.


Tax Day Notes:
It's been a cool first half of April. We have been turning the Sanyo off on the warmer afternoons.
It's very nice to have breakfast at 72degs when it's in the mid 30s outdoors.
These first 15 days of April (50.7kWh) cost us $10.10 (@0.20 per kWh).
After this little burst of snowy weekend weather is gone, we should see
from 1.5 to 2.5 kWh per day for the rest of April, ending the heating season. (I hope)!






March 30, 2010 note:
On rainy or cloudy days, the power usage will be higher than normal, since there is no solar gain from the south facing windows.


Dec 5 Notes:
The defrost mode works fine. See pics above.
http://ecorenovator.org/forum/projec....html#post5052

Breaking Even?
If it was super cold and the Sanyo running at it's full 2.5 kw for 24 hours, that's 60 kWh ($12).
That would be the same price as buying 4 gallons of $3 a gal heating oil..
(The burner uses 1 GPH when on. During Jan-Feb ave use is 3 to 4 gal-per-day. More on the really cold days ).

If I use 60 kWh as my break-even limit, using 20 to 30 kWh a day isn't so bad.
Not bad at all!

Dec 10 notes: Total house power use.
Checked the Nstar meter today. We used 429 kWh in the last 19 days. That's 22.58 kWh per day.
This time last year, we were using 27.7 kWh per day.
I guess those old space heaters that we were using with the oil heat, weren't too green..

Dec 17: COLD!
It got down to 14F this morning and the Sanyo works great!
Last night, the setback was 68 degs F. Clicked it back up, starting at 6:30 AM.

It's now 10:30 AM and the average temperature since midnight has been 18.5 degrees.
Since midnight, have used 8.08 kWh or $1.62 (instead of a few gallons of oil).

It's going to stay about this cold for the next 24 hours, so we might use
15 to 20 kWh today. But the Solar gain will cut that down some.

Right now, we are at a warm 72 degs, using 730 watts. (when not coasting).
Today is going to be a good test of the Sanyo's ability to deliver heat
at a high rate at a higher duty cycle. So far, it's looking good.

Dec 18: Midnight Hybrid mode
The last 24 hours average temp was 16 degs. Used 19.9 kWh ($3.38),
and now that it's 7 degrees and dropping(?), I have turned on the hotwater heat
flow-thru valve to insure that no baseboard pipes freeze up in the closed rooms.

07:00 AM, 6.0 Degrees F.
Hybrid mode worked pretty well. Used 5.2 kWh during the night
and kept the house at a constant 68 all night.
The air coming out of the Sanyo, 'felt' like about 12,000 BTU, using about 1kW,
which I think is pretty good considering the temperature outside.


Dec 23 notes about cost of fuel & power:
http://ecorenovator.org/forum/conser....html#post5310




As far as it's suitability for use in our new England climate,
I think we can declare this part of the experiment a success.