Generac — Replace AVR Filter
Maintenance · AVR Cooling System
From a Generac owner's manual — check it applies to your exact model before use.
Applies to: Generac 15 kW EcoGen, Generac GT-999 engine
Before you start
- Secondary 12V DC fan continues operating up to 1 hour after shutdown.
- AVR remains charged 3 minutes after power down. Wait 5 minutes before removing filter housing to avoid electrical shock.
- Exercise caution near AVR fan housing to avoid hand injury.
Procedure
- Wait 5 minutes after shutdown before removing AVR filter to avoid electrical shock.
- Remove screw to release AVR filter housing from back panel.
- Remove AVR filter housing.
- Grasp rubber lifting strap and remove filter from housing. Discard filter.
- Install new filter so edge positioned inboard of two tabs on housing.
- Install AVR filter housing so bottom drops into slots with rubber boot around fan opening.
- Install screw and torque to 50-96 in-lbs (6-11 Nm).
Tools required
- Torque wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- AVR filter housing fastener torque: 50-96 in-lbs (6-11 Nm)
- Replacement interval: 500 hours or 2 years
- More frequently if operating in dusty conditions
Full service-parts list: Generac 15 kW EcoGen →
Source: Generac owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.