Is a hot/cold utility sink in CO garage a bad idea?

[bradbn4]

Another option is to cut the water to the area and drain that part of the line during the cold weather. I have seen people use antifreeze to fill the p-trap to keep the smell down, or seal the drain from the top side so the gas can't escape.

[mb504]

You need water in the p-trap. No water, allows sewer gasses to seep back in to the dwelling.

I was envisioning moving the P-Trap into the basement on the backside of the wall. Probably would be a huge code violation, though.

[Fentonite]

You cold do something like this and have the benefit of a hot hose spigot too.

Thanks for posting this. I have hot and cold spigots outside that I connect with a washing machine Y-hose (ghetto, I know). One of the spigots needs replacing, so I ordered one of these (similar).

[Brian]

Maybe the first thing I really need to do is get a thermometer out there that keeps track of the coldest days/nights. Lots of options here, really appreciate all the ideas so far.
With the new insulation and drywall up, I'm curious anyway how much warmer it might be on the coldest days anyway. Will have to see if it makes sense to insulate the garage door too or not.

[Irving]

I have a single forced air duct running into my garage and it never drops before about 55 degrees. I gave a much smaller garage though.

[Wulf202]

There's multiple options. The easiest one is to get a thermostat operated gutter heater and some zip ties.