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Old 01-01-18, 03:11 PM   #85
ecomodded
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Join Date: Sep 2012
Location: Vancouver Island,Canada.
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First a Tip , If you try this yourself , pick a portable ac with heater as its defrost is tweaked to deal with frequent ice ups quickly and efficiently. Defrost last about 5 minutes and happens about every hour before Defrost heat output starts to reduce slowly.

The defrost has been working well , I have been checking on the condenser during bad weather and its been clear every time after a defrost.

Dec 2015 average temp 5.4*c =1600 KWh = $175
Dec 2016 average temp 2.3*c = 1900 KWh = $220
Dec 2017 average temp 3.2* = 1165 KWh = $125




As it works out this Dec the heat pump reduced power consumption by 43% vs. 2016 and 27% less then Dec 2015 .

The heat pump fan and duct cost $420 - first month savings of $95 so about 1/4 of the way to pay back already

I am finding 12000 Btu's to about perfect for the house I have been using a 600w heater on colder days/ nights set on a hour on / off schedule to supplement the heating.

The ac has been running 24 hrs a day 24-7

It has consumed 1398 KWh over 2057 hrs. this equals a average draw of 690 watts

I am expected to save around $100 in January the way its going that will move me to about a 50% pay back in the first few months

At this rate it should be payed off this year.
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