Heater Drain for new garage

[m123]

Building a 40x40 garage/shop and have not poured the floors yet. I'm not sure yet what type of heater I'm going to get yet nor do I know where to put it. I'm wondering if I need to plan for a condensate drain? Do all heaters require one?

Or should I only worry about this if I consider a "house furnace"?

I don't think I've seen drains for those forced air ones that hang from a ceiling or those radiant tube like ones either. Or do they need a drain too?

 

[rburke65]

Not a heating man, but I don't thing either of those mentioned require a drain.

 

[larry4406]

A high efficiency gas furnace (90+) will generate a fair amount of condensate should you use one. High efficiency water heaters also generate condensate should you use one for hydronic heating.

Do you have a foundation drainage (drain tile) system? These are typically below the frost line at footing level. Put a tee in it, and run a condensate line to it from the interior of the garage. You will want a way to drain condensate so it can't freeze in winter.

The lesser efficient heaters do not generate condensate.

Future AC? Future dehumidifier? Then you will need a way to get rid of condensate.

 

[ForceFed70]

If you plan to use a unit heater, they're almost all mid-efficiency and won't need a drain. Same goes for a radiant heater.

It's only when you get into a high efficiency unit that you need a drain and you typically only see high efficiency in a home furnace type of setup.

I wouldn't worry about a drain unless you think you're going to use some sort of a fancy high efficiency heating setup.

 

[kabinenroller]

You should have a master plan for all types of utilities. Rough in now and it will be much less expensive than trying to install it later. PVC is cheap, run the rough in now. Same with electrical, if in doubt at least install some conduit so you can pull wires later. The only thing I do not install inside of a wall cavity is air lines. They could develop condensation when installed in an "unheated" and then end or start in a heated area.
Didn't the local municipality ask for a detailed plan when you applied for the building permit?