I did something a little weird for water temp in the winter for my 11x14 print washer. I added 50' of tubing to the print washer feed line. I feed that extra line through two jerry cans and filled with water, which stays at room temperature. I get 70 degree wash water all the time for about $8.00 in materials, as I already had a couple old jerry cans. Yeah OK......I'm cheap.