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tank-less venting

Snowmelt Member Posts: 1,418
has anyone ever used the flush mount kit to vent a Navien , last time i called Navien tech. they told me they don't recommend it because they never tried it. But I installed 1 last year on a combi as per the builder & no problem. what do you guys think.?


  • DZoro
    DZoro Member Posts: 1,048
    Not a big fan of them. Seem to get reinjection of exhaust gas especially on low fire, low wind, corners..... What brand did you use?