Lochinvar's time-proven commitment to advanced water heating technology is reflected in every detail and component of their heaters. 


  • EnergyRite 2

  • Copper-Fin II

  • Aquas


The EnergyRite 2 enjoys multiple features that everyone can appreciate - efficiencies up to 88%, easier service access, digital controls, rugged construction for both indoor and outdoor installations, smaller and lighter than similar models, with multiple horizontal and vertical venting options that are normally only found on large commercial units. To top that off, the EnergyRite 2 is one of the most environmentally friendly pool heaters on the market today, with NOx emissions of less than 20 ppm.

Brochure  Owner's Manual



The new generation of Copper-Fin II commercial gas pool water heaters gives you all the advantages of Copper-Fin technology combined with the benefits of a sealed combustion system. It delivers three major advantages: higher efficiency, a smaller footprint and a wide variety of venting options. It has 88% thermal efficiency with a NOx rating of 9.9 ppm Thanks to the unique proportional firing technique, these new Copper-Fin models offer more accurate temperature control. Every unit is equipped with a comprehensive Diagnostic Information Center which alerts an operator and helps them isolate the problem quickly. Thanks to their small footprint, low clearance requirements and stackable design, the Copper-Fin II can be installed almost anywhere with six different options for the venting system.

Brochure  Owner's Manual


The Aquas pool package ingeniously couples a cupro-nickel pool heat exchanger rated for salt water with a powerful modulating condensing boiler that indirectly heats the pools water. It separates the pool water from the heat source which equals less product maintenance and a longer life. A complete factory assembled package reduces installation cost and time while maintaining effective heat transfer and extended firing cycles. The Aua pool packages are built with stainless steel condensing boilers which deliver up to 97% thermal efficiency. Standard on every 4000,000 to 800,000 btu/hr package is the Smart System control with LCD display, Navigation dial and 5:1 turndown. Standard on every 1,000,000 to 1,500,000 Btu/hr package is the Smart Touch control with touch screen display and 10:1 turndown. This means programming and data retrieval at your fingertips.

                   285-850 Brochure                        1000-2000 Brochure  

                 285 Owner's Manual                    1000-2000 Owner's Manual

               400-850 Owner's Manual

          APN285-APN850                      APN1000-APN2000

knorrsystems.com is changing to Aquafinity.com

We're thrilled to announce that knorrsystems.com is now transitioning to Aquafinity.com! This transformation isn't just a new name; it signifies a new partnership, and an upgraded experience with improved information and an updated web store. Aquafinity is your complete source for water quality solutions, offering an expanded array of products and services. From state-of-the-art filtration systems to eco-conscious water treatment, Aquafinity is dedicated to delivering top-tier products and backed by expert on-site services. What's more, all existing logins and user accounts will seamlessly transition to the new site, ensuring a smooth experience for our valued customers. Join us as we take Complete Water Control to a new level at Aquafinity.com!