I called to order since I needed a representative to obtain veteran discount. Order went smoothly. Heater was delivered in 4 days after order! Got it hooked up to 100# propane tank and it is heating up! Have a 21' above ground pool. Plan to let it warm for a couple of days since it's been cold here. I can feel the warmer water going into the pool! I am sooooo excited! Unit looks nice and only measures 24"x 12". Great price. Got it connected for $800 cheaper than local pool supplier.