The Specialist Buyers Guide for the Power Generation and Distribution Industry


AAF is a market leader in the design and manufacture of AAF air filters, air filtration systems, dust filtration air pollution control and noise control products such as acoustic enclosures for gas turbine, diesel Engine and compressor applications.  At AAF we also specialise in cooling systems, turbo inlet air cooling and gas turbine air intake moisture removal.

Please visit the AAF website to see our full range of air filters and air filtration systems products and services.

Sales Contact
Graeme Turnbull
Telephone Number
+44 1670 713477
Bassington Lane, Cramlington, Northumberland, NE23 8AF
View in Google Maps


AAF has 2 products.

AAF HydroShield Filters

AAF HydroShield filters help maintain gas compressor cleanliness by recovering 6% of the power output normally lost to engine fouling in non-power loss megawatt hours. The advanced protection provided by AAF HEPA (EPA)-class filtration helps keep engine cores in close-to-new condition during operation. As a result, cycles between on- or offline water washing can be drastically reduced, or even eliminated. 

“Our goal when AAF began installing HEPA-class filters for our customers was to make a gas turbine engine that previously required daily water washing run for at least 8,000 hours without washing,” said Kent Mertz, AAF Machinery Filtration Product Manager. “Now 8,000 hours without washing is routine. In fact, we have engines operating in excess of 24,000 hours without washing.”  The higher cost of AAF HydroShield filters is justified by the savings they generate, Mertz explained. “Increased turbine availability – all that downtime saved – is huge. Recovery of lost power, lower fuel costs, fewer maintenance costs. It all adds up,” he said.

AmerKool III Evaporative Cooler

AmerKool III Evaporative Cooler from AAF

Inlet Air Cooling

The compressor section of a gas turbine ingests a constant volume of air regardless of the ambient air temperature. The air temperature and its corresponding air density entering the compressor has a direct affect upon turbine power output.  If the air density is increased, which is accomplished by lowering air temperature, the compressor has less work to perform allowing the gas turbine to increase its output.Typically a 1° F temperature increase will result in a 0.5% decrease in power.  In hot climates, this reduced power output will be significant and therefore, costly. In addition to increased power output, air cooling allows the turbine to operate with a higher efficiency thereby lowering fuel costs. 

When evaporative cooling is applied to combustion air intakes, it serves to lower the heat and enhance engine efficiency by increasing the air density. Increased air density has the effect of raising specific mass flow rate through the engine, improving output and fuel efficiency. The AMER-Kool III unit has been designed to provide maximum performance with minimum pressure loss.