Whole House Water Filters

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How to choose a whole house water filter

Start with where the filter will be installed

These Q2, Q700 and Q800 models are sediment prefilters intended for incoming plumbing. That is different from an under-sink filter installed at a drinking-water point, and from reverse osmosis, which names a filtration method. A whole-house category label does not mean a product softens water or treats every possible water concern.

Compare the cleaning arrangement

Q2 uses a screen-and-flush arrangement. Q700 has a hydraulic self-cleaning design, while Q800’s listed configuration includes a pressure gauge with a flushing setup. Review the instructions for the exact model to understand its cleaning steps and service access.

Check connections, space and drain access

Before choosing, compare the exact model’s inlet and outlet details with your existing plumbing. Allow room to reach shutoffs, access the drain or flush outlet where applicable, and remove or service the unit. The supplied instructions recommend professional installation; have an installer check the model-specific fittings and the space available at your incoming line.

Match the product to the job

A sediment prefilter is not a water softener or a universal treatment system. If you want a filter at one kitchen sink, compare the Under Sink Water Filters category. If you are choosing by reverse-osmosis technology, review the Reverse Osmosis Systems category and the exact product’s stated method.

Frequently asked questions

What does “whole house” mean for these filters?

It describes their intended placement on incoming plumbing, before water reaches individual use points. It does not promise a particular result for every contaminant or water condition.

Do these sediment prefilters soften hard water?

No. Sediment prefiltration and water softening are different functions. Choose a product only when its documented function matches the water issue you are addressing.

How do the Q2, Q700 and Q800 differ?

Q2 uses a screen-and-flush arrangement. Q700 has a hydraulic self-cleaning design. Q800’s listed configuration includes a pressure gauge and a flushing setup. Check the exact model information and instructions before comparing installation or maintenance details.

What should I check before installation?

Check the model’s connection details, the available space around the incoming line, access to shutoffs and any drain or flush outlet. The supplied instructions recommend professional installation, so have a qualified installer confirm the setup for your plumbing.

Can a whole-house sediment prefilter replace an under-sink or RO system?

They serve different purposes and installation points. These products are sediment prefilters for incoming plumbing; an under-sink filter is installed at a point of use, while reverse osmosis describes a treatment method. Compare the exact product information for the need you have.

Before you choose

Start with the incoming-line location, then compare model-specific connections, installation space and flushing or cleaning access. Q2, Q700 and Q800 are listed as sediment prefilters—not softeners or all-purpose water-treatment guarantees. Use the instructions for the exact model and select a system by its documented function.