Greetings HVAC and plumbing aficionado’s,
Just out of curiosity, has anyone recently observed a residential mechanical room with two mid-efficiency furnaces burning natural gas and both draining very little (but obvious) excess condensate into the same floor drain, which appears to be a city storm tie-in?
How common is that?
The floor drain is a perfect place for those furnace condensate lines. It should be draining into the sanitary sewer not the storm.
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No, do you have pictures and models of these units? It’s not normal for mid efficiency gas units to have condensate drains. Do these furnaces have AC coils?
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He has obviously miss identified the efficiency of the furnace. Condensate lines should be ran to the floor drain.
Good call, they are both rated at 90%, but no AC in the furnace or plenum.
Thanks eh
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So now I have to ask, where did you get this city storm tie in idea from? Do you understand what that would entail and how illegal that would be 
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Aha yes I suppose that’s a lot of work to perform under the radar. Forgive my unknowledged slang