The cost of this product may seem high but I beg to differ. I have had this for over 2 years now and have experienced zero problems. the coil is strong and durable, a little tricky to clean if your brew has had a large krausen but pbw solves that with a soak. the controller and pump work flawlessly together. I primarily use this rig to ferment in my garage year round. By having the pump in a cooler that has an aquarium heater in it, I can keep my fermentation temp right where I want it.