A. O. Smith Cyclone® Commercial Gas Water Heaters

High-performance, low maintenance, peace of mind: our Cyclone® Series is the workhorse of commercial heaters

A. O. Smith Cyclone® Commercial Gas Water Heaters

Benefits of the A. O. Smith Cyclone® Water Heaters

Cyclone Gas Water Heaters are Energy Star Certified

ENERGY STAR® Certified

Up to 98% thermal efficiency dramatically lowers operating costs. Cyclone® is the industry leader in high-efficiency commercial water heating.

Helical Heat Exchanger Technology Illustration

Helical Heat Exchanger technology

Optimum efficiency and quiet operation with forced down-fired, hot gasses through the helical heat exchanger, transferring more heat to the water than a standard vertical flew.

Large Volume High Capacity Cyclone Commercial Water Heater

Heavy-Duty Performance

Cyclone® heaters feature a small footprint, multiple venting options, and large capacities – making them the ideal choice for commercial applications.

Cyclone® Innovative Technology

Learn about A. O. Smith's Cyclone® water heaters and their innovative technology that brings high efficiency operation and long-lasting results.

How Cyclone® Water Heater Work

Learn how A. O. Smith's Cyclone® water heaters work to provide high efficient performance.

Cyclone® Mxi

Cyclone® Mxi Condensing Water Heater

Cyclone® Mxi Condensing Commercial Gas Water Heaters

The full line of A. O. Smith Cyclone® Mxi condensing water heaters have been designed to provide years of dependable service and energy-saving Helical Coil technology. Models are available from 120,000 to 500,000 BTU/h and all deliver thermal efficiencies of 95% and higher. 


The current Mxi modulating models adjust firing rate to the specific demand, increasing efficiency and extending the life of the heater. Models are available from 120,000 to 499,900 BTU/h.

Cyclone® LV

Cyclone® LV Commercial Gas Water Heater

Cyclone® LV – Large Volume Volume Commercial Gas Water Heater

The Cyclone® LV integrates the helical coil heat exchanger into a large ASME-certified storage tank with a capacity up to 250-gallons, saving space and delivering powerful performance. Models are available from 150,000 to 500,000 BTU/h and deliver thermal efficiencies to 96%.


The modulating burner adjusts the firing rate to the specific demand, increasing efficiency and lowering energy costs. Cyclone LV is ideal for any commercial application with short period peak demand such as hotels, arenas, convention centers and schools.

Cyclone® XL

Cyclone® XL Condensing Gas Water Heater

Cyclone® XL Condensing Gas Water Heaters

From the #1 specified water heater family, the Cyclone® XL is built to power the largest commercial applications – packed into a compact footprint.


Intelligent Demand Response automatically adjusts the differential set point to increase hot water during large demand periods. This powerhouse unit is ENERGY STAR® qualified with a 97% thermal efficiency.

Cyclone® Xi

Cyclone® XI Water Heater

Cyclone® Xi Gas Water Heaters

The Cyclone® Xi is a light-duty, power direct vent, fully condensing commercial gas water heater with helical heat exchange technology. Cyclone® Xi models deliver a 96% thermal efficiency rate and outstanding hot water output.


Side-mounted hot and cold recirculating taps allow the Cyclone® Xi to be installed as part of combination space heating/water heating applications.

Cyclone® HE

Cyclone® HE Power Vent Water Heater

Cyclone® High Efficiency Power Vent Water Heaters

The Cyclone® HE is a light-duty, power vent, fully condensing commercial gas water heater with helical heat exchanger technology, which helps Cyclone® HE achieve 94% thermal efficiency and deliver outstanding hot water output. BTX-80 uses 76,000 BTU/h of gas to deliver 86 GPH at 100°F rise. 


The Cyclone® HE features Intelli-vent™ gas control with a silicon nitride hot surface ignitor for more precise control of water temperature and simplified system diagnostics.

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