Under pavement snow melter. I am thinking about using an electric water heater and running a line to a pump and having that connected to a manifold that will run 25 to 30 lines of funny pipe installed underneath a paver drive way. I will then run the lines back to another manifold and back into the waterheater. While running it should pump the warm liquid under the pavers and melt the snow and keep it clear year round. Is it possible to use antifreeze instead of water and heat it to the minimum? (vacation mode) (don't know how hot that is?) Just didn't know if anyone has ever had antifreeze in a water heater before, or if I should use a boiler. Any one have any thoughts on the this?