WaterVerdicts research

Whole-House Filter Sizing & Flow

Bathroom-count, GPM, plumbing-size, tank-size and pressure-drop guides for sizing whole-house water filtration.

Whole-house sizing

What Size Whole-House Water Filter for 2 Bathrooms?

Whole-house water filter sizing for two-bathroom homes by service flow, plumbing size and simultaneous demand.

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Whole-house sizing

What Size Whole-House Water Filter for 3 Bathrooms?

Whole-house water filter sizing for three-bathroom homes using GPM, service flow and peak household demand.

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Whole-house sizing

What Size Whole-House Water Filter for 4 Bathrooms?

Whole-house filter sizing for four-bathroom homes by GPM, connection size, service flow and peak demand.

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Flow sizing

Whole-House Water Filter GPM Sizing: How Much Flow Do You Need?

How to size whole-house water-filter service flow in GPM from simultaneous fixture demand.

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Plumbing size comparison

3/4-Inch vs 1-Inch Whole-House Water Filter: Does Port Size Matter?

3/4-inch vs 1-inch whole-house filter plumbing compared for flow, pressure drop and installation.

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Tank sizing

Whole-House Carbon Tank Size: 9-Inch vs 10-Inch vs 13-Inch Tanks

Whole-house carbon tank sizing by diameter, media volume, flow rate and bathroom count.

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High-flow sizing

Best Whole-House Filter Size for High-Flow Showers and Rain Heads

Sizing whole-house filtration for rain showers, body sprays and high simultaneous bathroom demand.

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Prefilter sizing

Whole-House Sediment Filter Size: Micron Rating, Housing and Flow

Whole-house sediment prefilter sizing by micron rating, housing size, pressure drop and particle load.

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Pressure sizing

How Much Pressure Drop Is Too Much for a Whole-House Filter?

Whole-house filter pressure-drop sizing explained by service flow, dirty prefilters, plumbing restrictions and peak demand.

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Exact model sizing

SpringWell CF1 vs CF4: Which Whole-House Filter Size Do You Need?

SpringWell CF1 vs CF4 compared by bathroom count, 9 vs 12 GPM service flow, tank size and installation.

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Exact model sizing

RKIN CS8 vs CS9 vs CS10: Which Whole-House Filter Size?

RKIN CS8, CS9 and CS10 compared by bathrooms, 9/11/15 GPM service flow, peak flow and tank size.

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Large-home sizing

Whole-House Water Filter Size for 7+ Bathrooms

Sizing whole-house filtration for large homes with 7+ bathrooms, high service flow and 1.5-inch connections.

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