How big is too big

JM_2

and your manufacturer of choice makes one a little to small and one 40% too big (including Pick-up) what should you do?

Is 40% over DOE too big?

Mad Dog

Always better to bump up one size than chance it.......

by going borderline or too small, although you can often get away with it. Once in awhile, you get bitten though. I learned the hard way on one of my steam boiler sizing experiments a few years ago on my own house. I said to myself: "Lets see how small I can go....I've insulated everything very well....maybe I don't really need that pick up factor...." My edr load matched the boiler output almost exactly....no dice. Had to rip her out and do it again with a bigger one. Yes, sometimes I am Mad.......but I learned how far I could push it. Mad Dog

Alan(CaliforniaRadiant)Forbes

Tell him

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jackchips_2

Glenn

gave you excellent advice.

JM_2

So I will go with the

Burnham IN4. I will need two, One for each apartment.

Thanks for the Info.

John Mahoney