Whole-house fan, residential economizer, or low ambient kit?
I’m on the southern edge of Zone 5A. As I am nearing the point where I will start construction, I’m working with a contractor and subcontractors on some of the details.
A common issue with prior houses was having a house that was too warm, when the temperatures were cool outside in the spring and especially the fall. This was an issue when it was cooler than the recommended temperature for running the air conditioner. I had a whole house fan that dealt with that quite well, and even reduced the number of weeks I needed tor run the air conditioner, particularly in the fall when the dew points were relatively low.
On the new house, I could ask for them to install an insulated one like the Tamarack, and it wouldn’t need to be a very high CFM unit because of house I would use the whole house fan. However, it seems like there may be other options, but I’m not sure if they are better.
They don’t seem that popular, but I have read that residential economizers exist. That would filter the incoming air.
Since the house will be insulated significantly better than minimum code, I wondered if a low ambient temperature kit for the air conditioner might even be a better option as my cooling load is likely to be quite low.
Before someone asks, “why don’t you open a window?” this never really seemed to work that well, especially if I had been using the oven or the daytime temperatures were high. While this house will be very well insulated, which might make this issue less significant, I’ll have about 5-6% south facing glass which could heat up the house on warmer days in late September and October when the overhang isn’t shading the south side of the house. Aside from the whole house fan, economizer and low ambient kit, there another option I should consider?
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