Whole House Filter: FAQs

A Whole House Water Filter, also known as a Point-of-Entry (POE) filtration system, is installed at the main water inlet to treat all water entering a home or building. Unlike under-sink or countertop systems that treat water at a single point of use (POU), a whole house filter treats all water before it flows to faucets, showers, toilets, and home appliances.

Lan Shan’s Whole House Filter series is available in 10” and 20” sizes and includes 1-stage, 2-stage, and 3-stage configurations to suit different water quality conditions.

Yes – especially for households or businesses looking to protect plumbing and home appliances from sediment, chlorine, and chemical buildup. A whole house filter not only improves overall water quality but also extends the service life of downstream systems such as RO units, washing machines, and showers. It’s a smart investment for long-term water system efficiency and hygiene.

Lan Shan Whole House Filters typically include:

• • Sediment Filter (PP): Removes dirt, rust, sand, and larger particles.
  • GAC Carbon Filter: Reduces chlorine, odor, and organic compounds.
  • CTO Carbon Block Filter: Targets finer chemical residues and improves taste.

All filter housings are pressure-resistant, with optional accessories like stainless steel hang or stand bracket , brass thread and pressure gauges.

Lan Shan offers multiple mounting formats to suit various spaces:

• • Wall-mount brackets in coated metal or stainless steel
  • Floor-standing brackets for added stability
  • Stainless steel covers for visible or outdoor environments

These options make it easy to integrate into residential basements, outdoor areas, rooftops or light commercial setups.

Replacement frequency depends on local water quality and usage volume:

• • Sediment filters: every 3 to 6 months
  • Carbon filters (GAC/CTO): every 6 to 12 months

For best performance, monitor water pressure and clarity regularly. Optional pressure gauges can help detect when cartridges are clogged and need replacement.