We have been using Aqua Logic chillers, heat pumps, and controllers for 20 years [and as of] 2015 we have 27 Aqua Logic systems in use. Their systems are high quality, evidenced by the fact that some systems are 20 years old and still active. Their help with design is the best, and their professional service is always there, online or by phone. I would highly recommend Aqua Logic products and service.