Questions on heating upper floor and controlling indoor humidity
We just bought a house in Seattle (2000 sq ft. 2 floors + basement) that has an integrated water/forced air heat ducted system on the main floors and basement and convectair wall heaters on the upper floors. We are looking at improving our energy efficiency and also controlling humidity issues we are having (in the 55-60% range on the 2nd floor and basement)
We just had an energy audit done and our contractor recommended the following:
– attic insulation and seal
– a single unit Daikin Quartenity DHP that can be used to set the humidity level, positioned at the top of the stairs (pointing down the hall)
– Panasonic whispergreen fans in the upstairs bathroom and basement bathrooms
I have a few questions that would be great to get advice on:
1. Would it be worthwhile installing the DHP on the upper floor? We don’t spend a lot of time up there (bedrooms only) and I’m wondering if the heat distribution from the ducted system would be sufficient. The installed cost was 6K although we do qualify for a 1.5K rebate
2. Is it worth installing the DHP that can control humidity levels? The cost difference is about 1-1.5K compared to Daikin’s standard model which has a similar SEER rating (the model we choose doesn’t affect our 1.5K rebate)
3. The 2nd floor bathroom fan is located on and vented through the wall and the contractor is suggesting reorienting the 2nd floor one to vent through the ceiling. Is this worth it (installation cost is significant) or should we just replace it with the Panasonic WhisperWall version instead?
4. Could we install the Panasonic spot ERV in the bathrooms instead of the fans? I noticed that the the price difference online or in another posting between the whispergreen fan and the ERV was not very much.
Thanks in advance!
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