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Rosalinda
Basic Member
Posts:353
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| 24 Apr 2011 11:25 PM |
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Viking, those look interesting. Cost per unit???
-Rosalinda |
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| Sum total of my experience - Designed, GCed and built my own home, hybrid - stick built & modular on FPSF. 2798 ft2 2 story, propane fired condensing HWH DIY designed and installed radiant heat in GF. $71.20/ft2 completely furnished and finished, 5Star plus eStar rated and NAHB Gold certified |
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Rosalinda
Basic Member
Posts:353
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| 25 Apr 2011 12:37 AM |
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OK, I did a Google search and I see mention of 1,000 euro per unit. Are these available in the US? US price?
I think I am still in DIY mode on this issue, but am interested in what other folks are doing to solve the no ductwork balanced air exchanges in a low infiltration well insulated house.
-Rosalinda |
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| Sum total of my experience - Designed, GCed and built my own home, hybrid - stick built & modular on FPSF. 2798 ft2 2 story, propane fired condensing HWH DIY designed and installed radiant heat in GF. $71.20/ft2 completely furnished and finished, 5Star plus eStar rated and NAHB Gold certified |
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schlick
New Member
Posts:6
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| 25 Apr 2011 11:03 AM |
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Installing Passive Inlets to help reduce the negative pressure is a good or bad idea? |
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jonr
Senior Member
Posts:5341
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| 25 Apr 2011 11:06 AM |
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Better than nothing - as you say, it will reduce it (not eliminate it).
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schlick
New Member
Posts:6
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| 25 Apr 2011 11:11 AM |
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I have been qouted $3000 for an HRV plus it will use electricity and I can install 4 pasive inlets for $200 witch allows for 48cuft. The exhaust system will be right around 90cuft. I suppose if I install elbows in the lines I could install two more passive inets in the basement witch would bring we to 60cuft. Any thoughts? |
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Montysc
New Member
Posts:42
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| 25 Apr 2011 04:55 PM |
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We are in a similar situation - Radiant Heat no ducting
We are in a very mild coastal climate with no need for AC - and very low winter heat requirements. Today feels like our average winter day and it almost May!
In our design I did quite a bit of research and found the Broan Smartsense system - We will use 5 80cfm fans in the 3 baths, 1 laundry room, and 1 powder room. These smartsense units will talk to a passive air inlet 6" diameter with a motorized damper that opens anytime one of the fans are on.
All of the fans "talk" to the main controller to determine how much each should turn on.
We decided to place the single passive intake upstairs in our great room - under an eave high up on a southwest facing wall. We should get some solar heat rise on that wall during the cold sunny days - and that should help temper the air a bit - though it isn't a big concern, due to our mild climate (Santa Cruz, CA).
For our kitchen hood vent we will have a damper and intake that puts air in behind the refrigerator to also temper the incoming air - it is also automatically opened when the vent hood runs.
I think this system will meet the needs for a simple and low cost ventilation only type of design - and it does meet the ASHRAE standards. Most of the time I expect we will have a window open, even in the winter! |
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