Reznor Unit Heaters

Our Reznor unit heater collection features high-efficiency gas-fired, electric, and hydronic unit heaters designed for commercial, industrial, and residential applications. Backed by over 130 years of heating innovation, Reznor delivers dependable comfort solutions for warehouses, garages, workshops, greenhouses, retail spaces, and more.

Whether you need a high-efficiency condensing gas unit heater, a large-capacity high bay heater, a versatile electric unit heater for decarbonization goals, or a hydronic hot water/steam solution, Reznor offers models engineered for optimal performance, durability, and ease of installation. Advanced features like separated combustion systems, stainless-steel heat exchangers, multi-stage controls, destratification technology, and flexible mounting options help maximize comfort while minimizing operating costs.

Reznor gas-fired unit heaters deliver up to 93% thermal efficiency, with heating capacities ranging from 30,000 to 1,200,000 BTUh depending on model. Electric unit heaters provide clean, efficient heat from 3 to 30 kW and support sustainability initiatives when paired with naturally generated electricity. Hydronic unit heaters offer an energy-efficient alternative for hot water or steam systems, with optimized coil designs for superior heat transfer and reduced maintenance.

Designed with contractors in mind, Reznor unit heaters feature compact construction, sealed control compartments, integrated circuit boards with diagnostic displays, vibration-isolated motors, and easy-access service doors. These installation- and service-friendly features help reduce labor time and ensure long-term reliability.

For added peace of mind, Reznor unit heaters are backed by one of the best warranties in the industry: 5 years on parts and 10 years on the heat exchanger. This industry-leading coverage reflects Reznor’s commitment to quality, durability, and long-term performance.

Explore our full selection of Reznor unit heaters today and find the right heating solution for your building’s size, layout, and efficiency goals. When performance, innovation, and warranty protection matter most, Reznor delivers.