SageBrush wrote:What internal temperature do you choose ?
Our average weighted thermostat winter set point is 70°F and weighted summer set point is 77°F. Our house is a single-story, approximately 2550 ft.².
In the winter at night we might let it drop down to 68°F, and during the daytime when we’re home increase it to 72-73°F. In the summer even on the hottest days, it is always cool enough outside to turn on the whole house fan and chill the house around sunrise. On most summer nights we can also open the windows in the evening and turn on the house fan to further cool the house.
During the spring and fall it is quite easy to achieve comfortable temperatures in a house with just using the house fan occasionally at the edges of the day if passive measures aren’t enough.
As for passive heating and cooling, we open/close windows and open/close blinds and shades strategically. We (my better half) could probably do a better job with this part.
SageBrush wrote:I anticipate using 5 - 7 kWh a day during our 2-3 month active cooling season by cooling the home for about an hour in the early AM and then another 4 hours or so in the early evening. I'm shooting for temperatures that start at 60F in the AM and peak at ~ 75F.
My uncertainty is whether to size the cooler for my entire house's volume or just the bottom floor since the airflow will be bottom to top.
Very nice plan and great low kWh use expected. Let us know what you ultimately decide with sizing and how the realized numbers work out.
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