Pentair Rainbow Automatic Commercial High Capacity Chlorinator, HC-3330, R171230

The Pentair Rainbow HC-3330, part number R171230, is an automatic high capacity chlorinator built for commercial pools. It holds 30 lb of tablets and feeds either chlorine or bromine, which means far fewer refills than a residential in line feeder on a pool with a heavy bather load.

Automatic feeding

Water passing through the unit dissolves the tablets and carries sanitizer back to the pool, so the dose is continuous rather than hand fed. Set the feed and check the tablet level on your normal service rounds.

Choosing between the 3330 and 3340

The HC-3330 covered here holds 30 lb. If your pool burns through tablets faster than that between visits, the HC-3340 is the 40 lb version of the same feeder.