The Q Premier Boiler Systemis a one-stop solution for residential space and water heating needs. Equipped with a heat exchanger, it offers the company’s solo boiler coupled with a 24-gallon hot-water storage vessel in a single unit. It comes fully assembled for faster and easier installation and features multiple plumbing and venting options. Rinnai. 800-621-9419. www.rinnai.us.Booth No. C2614.