Natural gas wall furnaces
Hi there – I am curious if the GBA community has any opinions on direct-vented natural gas wall furnaces like the Rinnai EX22CN.
I have a 500 sqft kitchen + dining room + living room space with high ceilings and it’s currently heated by my massively oversized central air furnace that heats the whole first floor (60k Btu for a 1100 sqft downstairs.) The ductwork also runs through my unconditioned crawl and I’m pretty sure it loses a lot of heat on the way.
I was considering a mini-split with a high wall indoor unit but looking at the price of natural gas vs electricity here, and pieces like this https://www.greenbuildingadvisor.com/articles/dept/musings/ductless-minisplits-may-not-be-efficient-we-thought made me wonder if I could get the same benefits of a minisplit (downsizing, eliminating ducts, bringing the heat exchange inside the thermal envelope of the house) with the savings of natural gas.
– I would like the unit to have a decent fan. Not sure why but I trust forced air movement more than passive convection. I have heard that the mini-split high-wall units do a nice job of this.
– I live in the Pacific NW so lack of cooling in the summer is a non-issue.
– Let’s assume that I can downsize or replace the existing furnace and continue to heat the other rooms in an alternative way.
– Ideally I would be able to find a 9k Btu gas unit that I could mount high on the wall to save floor space. In my 15min of googling though the Rinnai was about the best I could do.
– All the natural gas wall furnaces I found look pretty dated, which may be a sign…
Many thanks for any thoughts that people here have!
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