Where to Locate the ERV Intake
嘿大家，
I’m having a heck of a time finding a suitable location for my ERV intake.
Exhaust is not a problem, I’ll be going through the roof.
Intake is another story…
My house is a townhome, built in 2020.
我正在盖住在我家的第二篇故事中将ERV安装在我的洗衣房内，这是一个有条件的空间。从这里，我将通过干墙运行管道，进入阁楼。
Ducting will supply fresh air to all 3 bedrooms located on the same floor and there will be one exhaust extracting from the central hallway.
我无法从我的阁楼里面进入外墙。我有9英尺的天花板。
The only option I can think of for fresh air supply is some type of soffit vent intake to supply the ERV with fresh air.
我已经阅读了这个网站和其他人在沥青瓦片屋顶上的新鲜空气进气并不好，我同意。
In the attic I have rafter baffles near the end of the roof to keep the blown-in insulation in place, while venting the attic.
然而，在椽子挡板后面有2 x木材或“阻塞”。意思是我无法轻易进入我打算把新的空气摄入的平坦的拱门区域。
So my questions to you are:
1.我可以切洞或去除这个阻挡，所以我可以放入我的管道上进行新的空气摄入量吗？
2. What other options can you think of for a fresh air intake for my ERV?
我真的很损失，我的下一个选择是考虑将通过外墙的Lunos HRV，但是，这些有限的CFMS和我的新建筑Townhome中的VOC非常高，经常高于1,000 ppb。
Thank you!
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由气候和房屋部件组织的一千个建筑细节的集合
Replies
I would duct the intake straight through the wall. If you don't like the looks of exposed ductwork you can wrap it with framing and drywall.
如果由于某种原因您不想穿过墙，否则除非当地代码如消防码或地震代码禁止它，除非禁止它，我看不出任何原因，您无法通过桁架阻塞整齐地切割。它主要是为了保持桁架直立，但只要相邻的人保持完整，你应该没问题。90°弯曲减少空气流动，使其直接穿过墙壁是优选的。
In a similar situation, I did exactly what you are proposing.
由于绝缘的顶部高于阁楼地板框架的顶部，因此我与一些2倍的垂直和跨越两个托架托架一起进入，以抬起框架的顶部，然后将一些护套放在那里进行访问。刚刚开始了。
Used a Panasonic EZ Vent as the soffit intake but removed the white flap damper (the EZ vent is, I suppose, meant to be used for exhaust only). I cut a piece of screen material and inserted that between the exterior grill and the body of the EZ Vent to keep insects out. Even though the EZ vent is rated for 4" duct, it has more si of free area than other 6" soffit systems, so I used it.
One thing to consider before you go to this trouble is whether totally airing out the house for awhile might solve your VOC issue, and/or trying to identify the specific source of your high VOC's and deal with that in lieu of this ERV. After all, even with an ERV, the VOC's will still be there, you will just be moving them out quicker. Best to try to get rid of them. If it is a particular item, such as flooring, certain trim, etc. it may be better to just replace that.
此外，你知道你的房子有多紧张吗？如果它没有真正紧张，ERV可能对VOC有很大帮助。
谢谢你的回复Cl。
我计划在6''，灵活和绝缘的管道上安装。
你是否能够将6英寸的管道连接到4''松下EZ通风口？
对不起 - 刚看到这个。
我的6“管道向4”EZ通风口的连接是非常规的。
我需要一个6“坐厨房排气罩的距离阻尼器，所以我在Lowe购买了6英寸的被禁止的拱门排气：https://www.lowes.com/pd/IMPERIAL-8-5-in-L-White-Plastic-Soffit-Vent/3126431
这款SOFFIT通风口可用于排出4“，5英寸或6” - 您可以快速关闭延伸环，使其适合较大的管道。因此，我将4“套环关闭贴合6”厨房排气管。
当我到达6“化妆空气管道时，我意识到了4”松下的EZ通风口比6“帝国通风口有更多的自由区。所以我用了EZ通风口，但需要从4”过渡到4“ez发泄到6“管道。我在商店中发现的4-6转换太长，我必须与之合作的区域。我从厨房排气口中使用剩下的4”到6“衣领，它完美地工作。
所有所说的，我的6“连接到松下EZ通风口的管道用于厨房排气构成空气。我从松下EZ通风口取下了阻尼器，所以它将用于化妆（进气）空气。
I also have the Panasonic EZ vent as my ERV exhaust termination, but my ERV's are ducted with 4" so the EZ vent works perfectly.
谢谢你的回复。这是非常有帮助的！
我相信现在的共识是一场失败的战斗。在你购买的一切中有很多化学品，将它们保持全力以赴。如果是一个紧身的房子，更不用说它只是为了空气。
One thing to pay attention to is the need to regularly clean the intake of the ERV. They get clogged with cottonwood fluff, pollen, bugs, etc. etc. Being up on the eave of a second story isn't convenient. Not that it makes your problem any easier, but one could consider running the duct down through the second story floor system and out the wall at the rim joist or even below that. On a recent retrofit project where the intake was on the second story we discovered that the screening was completely clogged and the machine had been doing essentially nothing but using electricity for who knows how long. On the other hand, I have a friend who keeps a rechargeable vac near his intake and cleans it fairly often as it was deliberately located near his front door. Just another wrinkle to throw at you...