Pentek Big Blue, 3/4" Filter Housing

When whole-house water demands high flow and serious dirt-holding capacity, the Pentek Big Blue 3/4" Filter Housing rises to the task. Built around the industry-standard Big Blue format with a 20" sump and 3/4" ports, this housing accepts a wide range of large-diameter cartridges for sediment, carbon, and specialty filtration at the point of entry, where treating all the water coming into a home or building does the most good.

Why the Big Blue format works

The generous sump volume holds high-capacity cartridges that filter far more water between change-outs and create much less pressure drop than small in-line filters. That lower restriction matters for whole-house service, where flow to multiple fixtures must stay strong. It makes this housing a popular choice for whole-house sediment reduction, well water pretreatment ahead of softeners and RO systems, and chlorine taste and odor removal when fitted with a carbon block.

• Big Blue style housing with a high-capacity 20" sump
• 3/4" inlet and outlet ports for solid whole-house flow
• Durable blue housing accepts standard large-diameter cartridges
• High dirt-holding capacity reduces change-out frequency
• Lower pressure drop than small in-line filters
• Ideal for sediment, carbon, and point-of-entry filtration

Install the housing on the main line after the meter or pressure tank, leaving room below the sump so it can drop free for cartridge changes, and consider a shutoff and bypass arrangement to simplify service. Using the matched mounting bracket and a proper filter wrench makes routine maintenance straightforward, and a pressure release where equipped lets you relieve the housing before opening it. Whether protecting downstream softeners, water heaters, and RO units from sediment or simply improving water quality throughout the building, this Pentek Big Blue housing forms the rugged backbone of a robust point-of-entry filtration setup that homeowners and installers rely on.

By capturing sediment and, with the right cartridge, chlorine before water reaches your plumbing and appliances, a point-of-entry filter in this housing helps extend the life of fixtures, water heaters, and downstream treatment equipment. For homeowners seeking cleaner water throughout the house with manageable maintenance, the Pentek Big Blue 20" housing is a proven, high-capacity foundation.