Exhausting multiple bathrooms
I know this is topic that has been discussed previously. I have 3 baths on my 2nd floor and 1 on my first floor. I have windows in all but my master. So I believe code does not require ventilation in 3 of the 4 baths. I would feel better having the option.
The exhaust for 2nd floor baths would have to go through the roof no other way. I originally looked at an inline ventilator with 4 inlet ports. Mainly because I can poke a single 6” hole in the shingles and be done. The price on one of these units is around $325. So if I where to spend a few more on a budget erv or hrv I was looking at the 600-700 range.
Going this route I would need two roof penetrations but I would get the added benefit of the recovery ventilation. I have no qualms about how Long it will take to Defog the mirrors.
We currently share the 1st floor bath. And I am the only member of the family that actually uses the current exhaust fan. I suspect this trend will continue once we finally move upstairs. So I really like that an erv or hrv will basically put me in control of venting all baths automatically even when the wife and kids consistently forget to hit the switch.
我阅读了马丁的文章，内容涉及与HRV结合使用的浴缸风扇，并在文章的结尾结束时警告说，将ERV用于此功能。那么，我是否纠正HRV更安全？我知道这更便宜。
Do any HRVs have an exhaust only function for the extremely humid times of the year that I don’t necessarily want to pump the humid outdoor air in? In a previous thread Martin mentioned that most HRVs have a booster feature.
And what are the downsides/upsides to running an hrv in the summer? I found a soler & Palau tr90 erv for around $650. But as mentioned this is an erv and maybe not the best option for my purpose.
I really just want the baths the be ventilated whether code requires me to or not and not pop 3 vent holes out of the roof. So I figured if I’m spending a few extra dollars, why not get an option that replaces some air and semi conditions it on the way in?
I plan to duct the hrv independently by installing return air registers to each of the 3 upstairs baths and possibly the 1st floor bath. I have a centrally located staircase that I can pump the incoming air to and maybe one more location(master bed,living room).
一个新鲜的空气输出足够吗？关于保留理性的设备的一些建议是什么？我住在第5区，地下室将拥有3000SF的条件空间。我的第二个故事很紧张，但是第一和地下室仍然需要很多爱，但是我将在未来5年内解决这两层。
谢谢
劳尔
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Replies
I don't know where you are and what code applies to you. I know where I am, the window no longer counts for bathroom ventilation. But you're planning on doing it anyway, so it's academic.
“任何HRV都有仅排气功能...”
Yes.
..."for the extremely humid times of the year that I don’t necessarily want to pump the humid outdoor air in?"
潮湿的空气仍将进入，它将来自房屋中的泄漏。或者，如果您的房屋非常紧密，它只会使您的房屋抑制，而您实际上不会撤离浴室的空气。这更有可能是第一种情况，但是在任何情况下，我都看不到在仅排气模式下运行HRV是有意义的。
一个新鲜的空气寄存器就足够了，如果它的尺寸正确。确切的大小取决于总气流。
如果该设备的全部目的是从浴室中去除水分，则HRV比ERV更好。我无法评论排气风扇是否有意义。如果您打算将房屋的其余部分收紧，您还想考虑通风和空气质量的长期计划。
谢谢Trevor,
Yes I would mostly use the hrv for moisture control in bathrooms. I plan on sealing up the house over the next few years and then the hrv will serve dual purpose. As far as erv vs hrv what should I be cautious about in regard to using an erv in this application with no dedicated exhaust fans? From I gathered it would also transfer moisture content to the fresh air side?
劳尔