Add to Cart Quick view Hydro-Quip Inc Heater, FloThru, Aquatemp, 15" x 2", 230v, 5.5kW $524.95 AquatempStainless steel, 2" x 15" in-line 5.5kW /230v heater assembly. The 5" x 7" enclosure houses a thermostat, hi limit switch, pressure switch, 230v contactor, and a heater on indicator light... Add to Cart Add to Wishlist