Just a quick update on Sanyo power use.
We have changed our over-night set-back temperature from 66 to 68 (19 to 20 C).
So, we are using a bit more power. With low heat gain from solar,
we seem to average about 10.5 kWh on days with an average in the low 30s.
Whereas the number was closer to 10 kWh back in 2009.
I think that's about a 5% increase in cost, which will go up at colder outdoor temps.
However,
My local mean temps aren't too cold..
---- Jan-Feb-Mar-Apr-May-Jun-Jul-Aug-Sep-Oct-Nov-Dec
Mean 25° 27° 36° 46° 56° 65° 71° 68° 61° 51° 41° 28°
Looking at a 6 month heating season, the average of the mean temps is, 34.66 degrees..
Which means on partly cloudy days, I will be using, (on-average) 10 to 11 kWh. ($2.20)
Or $66 a month. Which would be between 1/4 and 1/3 the cost of heating oil.
(
And that doesn't include the cost of power to run the oil burner and circulating pump).
A note to new readers.
We are a retired couple and spend much of our time at home.
Otherwise, our heating cost would be somewhat lower.
Cheers,
Rich