|2009-11-25, 11:47 AM||#1|
Join Date: Sep 2004
Location: Moncton, NB, BellTV, 6141, LaCie 750 GB eHDD, Panasonic TH-50PX75U, Panasonic SC-PT960 Panasonic S43
Heat Pump not delivering energy savings
We own a split-level 1500 sq ft home with electric baseboard heating.We installed a Fujitsu
12RLS mini-split in September 09. The installer and the Home Energy Audit claim a 30% saving in
heating costs with this unit.
The energy audit revealed some air leakage areas and with that list and a little DIY I managed
to reduce the heat loss by 10% qualifying for additional Federal grant money plus the heat pump
grant. So, all things being equal, I would save 10% on heating costs?
On the upper lever we have 7 baseboard heaters totalling 7500 watts on digital thermostats.
These heaters are set at 5 C as the heat pump has been in heat mode for the past month. The heat
pump is set at 66 F or 18.8 C and the upper level is comfortable. The lower level is heated by 3
Convectair convection heaters set at an average of 20 C, set back at night, same as previous
Now comes the problem/question. Our latest electric bill shows an increase in consumption of 106
kWh over the same time period last year. The average outdoor temps for both periods are about
the same. I'm not looking forward to -10, -15 C when I have to add supplementary heat.
Changes from last year.
-heat loss reduced
-upper level baseboards essentially off
-heat pump installed
-increased electrical comsumption
What am I missing or doing wrong here?
Do I shut the unit off until cooling season arrives and heat with baseboards?
Do I turn the baseboards on and put the unit in fan mode for air circulation?
Do I lower the temp setting on the unit even lower?
Any assistance would be appreciated and apologies for the lengthy post.