Gas Turbine Air Intake Filtration Overview
Gas turbine intake filtration protects the compressor and hot section from dust, salt, and moisture that cause fouling, erosion, and corrosion. Modern systems are multi-stage — coalescers and pre-filters followed by high-efficiency EPA/HEPA-grade final filters — to maximize turbine output, efficiency, and component life.
Why intake filtration matters
Even small amounts of airborne contamination degrade turbine performance. Fine particles foul compressor blades (reducing efficiency and power), larger particles cause erosion, and salt or moisture drives corrosion. High-efficiency intake filtration directly protects megawatt output and reduces costly washes and overhauls.
Multi-stage filter systems
- Weather hoods and moisture/coalescer stages remove rain, fog, and salt mist.
- Pre-filters (G4–M6 / EPA) capture coarse dust and extend final-filter life.
- Final filters (F9 to E10–H13 / HEPA grade) remove the fine particles that foul blades.
- Static or pulse-clean cartridge systems are selected based on site dust load.
Frequently Asked Questions
What efficiency filter do gas turbines need?
It depends on site conditions, but the industry has moved toward high-efficiency EPA and HEPA-grade (E10–H13) final filtration to minimize compressor fouling, especially in coastal, desert, and industrial environments.
Do you supply gas turbine intake filters?
Yes. Modern Air Filtration supplies and custom-builds high-efficiency intake filters and pre-filters for gas turbine and rotating-equipment applications. Contact our applications team with your turbine model and site conditions.
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Need help choosing the right filter?
Talk to our Canadian air filtration team. Call 1-888-973-3635 or request a quote.