Vacant Property without HVAC - How to keep pipes from freezing

[Ray Jhala]

Hey BP!

I've got a property that I am rehabbing and our timeline unfortunately got pushed back into the upcoming winter months.  The property is currently vacant and does not have an HVAC system installed. We have a number of things that need to get done before we can get our HVAC crew in there to install.  Until I wanted to make sure I took the measures to prevent our pipes from freezing/bursting.  

I am not sure what the best preventative solution would be so I'm asking the smartest people I know, you all!

I've read online about insulating pipes to keep them from freezing however if the space is not being heated do I need to go out and buy a space heater to try and keep the space a bit warmer?  

Thanks in advance!

~ Ray