Is a HRV the way to go?-installed/update

[mark]

Originally Posted by KevinK

so now wondering, how much air flow do you need for a particular house size,


also, would you considder to have one intake in a filter room, ore above the tank (salty air)

google "sizing HRV" or look installations manuals for either the formula based on the volume of house or the tables.

my plan is pull the stale air from high point in the house, fresh air tied into force air furnace ducting. I wouldn't pull directly from over the tank as wouldn't think the moist salt air would be to good for the HRV fan motors

[bkelly]

I took my stale from the laundry room and the room linked /beside to my tank room i was going to run more but that was enough to do the trick, i didnt balance it but its an older home so heard thats not as important in older homes due to not being totally sealed. Plus balancers are expensive and i installed myself. I got the Lennox 200 it was the higher volume one but i wanted to up and not worry, my humidity is way lower now. (below 40%), it returns into the furnace up stream of the blower , the blower is wired to the HRV to be on when its on, the air that blows is a little cool when not heated , house is a bit cooler, its only -5 to -10 out.. Ill have to run on low in the summer but this wasnt an issue in the summer , good for fresh air into the home.

[bkelly]

yes the calculators can go by sq foot or average home size base on 3-4 bdr etc. for getting an idea on size of HRV needed, mine was for a standard 3 bdrm home. although i got the size up. Got it through Coral in Kelowna. saved $1500 installing myself. Didnt go for the grants, didnt get the inspections before and after, seemed not much left after. We were in a rush to save the home from damage.

[rayjay]

In my case I spoke with the engineer for Lifebreath here in London where they are made, and he took the square footage of the house, the year it was built, extra insulation of any kind added after the build, and then wanted to know the surface area and temperature of all the open water in my house, to come up with an accurate determination.

[mark]

Originally Posted by rayjay

In my case I spoke with the engineer for Lifebreath here in London where they are made, and he took the square footage of the house, the year it was built, extra insulation of any kind added after the build, and then wanted to know the surface area and temperature of all the open water in my house, to come up with an accurate determination.

much difference from the regular formula for the 0.35 air changes an hour (sqft x height / 60 x 0.35 to give CFM)

[rayjay]

The reason for it was circumstances not normal to most houses.
I had over 1000g of open water in my basement with all the tanks, the brine shrimp operation, nanno culturing and ageing water vessels.
Simple formula just wouldn't cut the mustard.
Also, when I got mine there were hardly any contracters that even understood HRV's and ERV's.
Most of them tried to sell me ERV's which don't work well below -5°C.

[bkelly]

I found that too, the two i talked to in Kelowna didnt know much and what they did new was with HRVs for new homes, I knew what i wanted from Canreef mostly but listened to them and we figured it out.

[mark]

Originally Posted by rayjay

The reason for it was circumstances not normal to most houses.
I had over 1000g of open water in my basement with all the tanks, the brine shrimp operation, nanno culturing and ageing water vessels.
Simple formula just wouldn't cut the mustard.
Also, when I got mine there were hardly any contracters that even understood HRV's and ERV's.
Most of them tried to sell me ERV's which don't work well below -5°C.

most of use aren't normal so why was asking . Could you work backward, for how many air exchanges per hour was recommended?