Generally you should rebuild your pond aerator compressor unit every 3-5 years under normal conditions.  Air filters should be changed or cleaned once or twice a year. 

Pond Aeration Rebuild Kits & Filters

Stratus SRC series "Gen 2" rocking piston compressors are specifically designed for the demanding job of 24 hour...
Air Filter for Rocking Piston Compressors Gast Replacement Element Only - GAFE Replacement filter element for GAF and GAF2 filters...
$19.69
Gast Replacement Air Filter Element for DC22 compressor
Rotary Vane Compressor Parts - Gast Rotary Vane Repair Kits Rotary vane compressors each have four self-wearing carbon vanes,...
Gast Blower Filter 1/8 HP to 5 HP Use these high volume air filters as replacements on Gast...
Check Valve For Rotary Vane Compressor The RVC/ RVC2 assembly is designed to go on the inlet of the...
1/8 and 1/20 HP Gast Compressor Repair Kit - DC12RK, RK22 If your air compressor runs but does not...
1/4 HP Gast Rocking Piston Compressor - Stratus SRC Series Gen2 Rocking Piston Compressor - SRC25 - FREE SHIPPING...
1/4 HP Gast Rotary Vane Compressor - RV33 Stratus Long lasting, continuous duty compressors offer less depth capabilities...
Gast Rotary Vane Compressos are long lasting and continuous duty compressors that hve less depth capabilities than the rocking...
$19.69
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