Is it a case of just plugging a single hose from my shurflo into the hotwash then into the hose reel? Or could i put two pump feeds into a single reducer in, and then the same out, into 2 reels (8mm minibore)? and does the heater detect water flow and switch off and on every time i turn on my hose tap? How reliable is the temp setting, is it safe on glass in cold weather at say hand warm? If i did run two reels i would imagine i would have 2 raise the temp up when the 2 are running, but then if one man turned his tap off would the temp then rise to a to hot temp on the glass in the cold? THANKS M