Marley Sigma

Overview …..

The Marley Sigma provides the easy maintenance benefits of a crossflow tower with the high performance of film fill; setting the standard for high efficiency and low maintenance versatility in a field erected cooling tower design. Available in fiberglass, steel, stainless steel and wood construction.


Guaranteed Performance

We’ll stand by our responsibility for reliable thermal performance. We designed it. We rate it. We guarantee it!

Exclusive 5-Year Mechanical Warranty—Most Applications

Your no-cost assurance of trouble-free mechanical operation for 5 years. Isn’t that where a lot of your tower maintenance dollars have gone in the past?

Long Service Life

We’ve carefully chosen all the materials used in Sigma cooling towers for their corrosion resistance and suitability for cooling tower service. Pressure-treated lumber, heavy-galvanized steel, stainless steel, PVC and fiberglass keep your Sigma cooling tower working year after year.

Efficient Field Assembly

Precise factory fabrication assures that every component in your Sigma cooling tower will fit as designed. And Marley offers an unparalleled nationwide construction organization to build your cooling tower quickly and economically.

Low Operating Costs

Marley’s high-efficiency fill and fans, gravity-flow water distribution, and efficient Geareducer drive work together to offer maximum cooling with minimum power use.

Low Maintenance Costs

Induced-draft propeller fans on Marley right-angle Geareducer units; TEFC, 1.15 service factor motors; and heavy-duty mechanical equipment supports assure long service life with minimal maintenance.

All-Season Reliability

Sigma cooling towers perform as specified in the heat of summer. They respond well to energy management techniques in the spring and fall. They operate virtually ice-free in the dead of winterwhen operated correctly. And they offer simple maintenance all year long. We guarantee it!

Single Source Parts Availability

Marley designs, manufactures, guarantees, and stocks all major components of the cooling tower except motors. We’ll have the parts if you ever need them.