Lochinvar

Lochinvar: A Century of Energy-Efficient Heating Solutions

Since its founding in 1919, Lochinvar has built a reputation as one of North America's most trusted names in water heating and hydronic systems. Headquartered in Lebanon, Tennessee, and now part of the A.O. Smith family of brands, Lochinvar has spent over a century engineering high-efficiency boilers, water heaters, pool heaters, and commercial package systems for both residential and commercial applications. The brand's enduring philosophy is straightforward: deliver radically simple, brilliantly engineered products that perform reliably across virtually any heating application.

A Comprehensive Product Lineup

Lochinvar's catalog covers the full spectrum of water and space heating needs. Their legendary Knight, Crest, and FTXL boiler series set industry benchmarks for condensing efficiency, while their residential and commercial water heater lines span tank, tankless, hybrid heat pump, and indirect models. Every system in the Lochinvar portfolio is engineered to work as a cohesive unit, which is why genuine Lochinvar replacement parts and accessories are critical to maintaining peak performance.

Central to every Lochinvar boiler or water heater is a precisely matched set of components. Circulation pumps keep heated water moving through the system with minimal energy loss — Lochinvar even offers a proprietary variable-speed circulator that integrates directly with their Smart System and Smart Touch controls to precisely manage boiler temperature rise. Equally important are the blowers and inducer assemblies, which manage combustion airflow and draft in condensing boiler and water heater applications, ensuring efficient and safe operation.

On the controls side, Lochinvar's water heater gas valves and controls are engineered specifically for their equipment, delivering accurate fuel metering and reliable ignition across gas-fired models. Their HVAC control modules — including integrated control boards and user interface panels — bring sophisticated diagnostic and monitoring capabilities to technicians and homeowners alike. Lochinvar's CON·X·US Remote Connect platform even allows remote monitoring and management of boilers and water heaters from anywhere. Rounding out the safety side, boiler safety controls and aquastats protect systems from overheating, short cycling, and thermal stress, responding dynamically to water temperature changes to keep everything operating within safe parameters.

Why Lochinvar Stands Apart

What separates Lochinvar from competitors is a relentless focus on engineering quality and environmental responsibility. Their products are designed for low energy emissions, and the company supports recycling initiatives within their manufacturing processes. Lochinvar also invests heavily in installer and technician education through LochinvarU, their industry-leading training program, ensuring that every product is installed and serviced correctly. Whether you are a contractor replacing a worn circulation pump or a facility manager sourcing a control board for a commercial boiler, Lochinvar's parts ecosystem is built to keep systems running at their engineered best.