This company installed a 400,000 btu. Pool heater, and did a fantastic install, and heater has been working great ever since, without any service calls! August, 2013....I can say from a negative previous install by another company( of also a gas boiler for my house heating), that this company has talented and professional folks who care about doing jobs right the first time. My hat is off to Mr. Manning and Company, at Preferred Pools And Masonry!