On Sun, 20 Dec 2015 13:18:55 -0800 (PST), wrote:

What do folks typically do to keep their paint and equipment from
freezing in an unheated garage... without risking starting a fire?

Thanks
Theodore

Most paint is water based LATEX these days. There is NO risk of starting
a fire!

Oil based paints are not supposed to freeze, but I did once leave a
gallon of oil based exterior paint in my unheated tool shed over winter
and in spring it was useless. (I never understood this). But even an oil
base paint should not be a fire risk as long as the lid is tight on the
can.

You have little choice but to bring it indoors where there is heat!
Just dont put the oil based paints on top of your furnace or water
heater.