Finished Basement? Here's How to Add Multiple Suction Points.

[@221B-s7o]

Hi Jesse, thanks for your help on Minnect. Unfortunately I had unexpected problem. Radon mitigation created a negative pressure and causing some backdraft issues with water heater. The water heater will backdraft when it’s cold and not on. I am thinking backdraft damper might resolve the issue. Any thoughts?

[@publicEnima]

how big of a fan do you need for multiple point suctions. our basement was mitigated but long term level is still around 5.3. It was 12 when we tested it.

[@AmericanRadonMitigation]

We mostly use small and medium-sized fans. The more suction points you have, the smaller the fan you can use.

[@publicEnima]

@@AmericanRadonMitigation what about pvc size. we just have one 3 inch pvc, so on the second suction point use a smaller pvc and tie it into the 3inch?

[@AmericanRadonMitigation]

It depends on how much air you need to move. Our general rule of thumb is that 2-inch piping can handle up to 35 CFM and 3-inch piping up to 70 CFM. If you have a lot of fittings or piping, they can create more friction loss, so you may want to step up to the next largest size piping.

[@menacexp]

quick question -- do you know of, or can recommend a mitigation installation company in Canada, specifically East Coast (maritime area)? I've reached out to a few but never heard back. They seem like small companies. The one guy who responded back didn't even have a company phone, lol. I have the Airthings sensors and they test radon levels (not sure how accurate they are but they have good reviews) - usually in winter i'm getting between 250-400+ Bq/m3 - i know, super high. Summer it's usually between 50-125 Bq/m3

[@AmericanRadonMitigation]

The only Canadian contractor I know is Colin with Radon West. He's near Calgary, but he also trains mitigators, so he might know of one in your area.

[@menacexp]

@@AmericanRadonMitigation ok thanks, i'll reach out

[@AmericanRadonMitigation]

You bet!