# Waterdrop WHF21-PG Whole House Water Filter, 5-Micron, 15 GPM

Waterdrop WHF21-PG whole-house filter with 5-micron filtration helps reduce sediment, chlorine and odours throughout your home.

- [Original product page](https://www.ofertitastop.com/ca/product/waterdrop-whf21-pg-whole-house-water)
- [View offer](https://www.ofertitastop.com/ca/visit/waterdrop-whf21-pg-whole-house-water)
- Market: CA
- Language: en-CA
- Currency: CAD
- Product updated: 2026-10-23T03:11:28.584Z
- Brand: Waterdrop
- Model: WD-WHF21-PG
- MPN: 1
- SKU: ofertitastop-ca-17718
- Category: Hardware > Plumbing > Water Dispensing & Filtration > In-Line Water Filters
- Source store: amazon CA
- Active deal: Yes
- Price: 149.99 CAD
- Previous price: 179.99 CAD
- Discount: 17%
- Rating: 4.4 / 5
- Reviews: 1503

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## Description

For households looking to filter water at the point it enters the home, the Waterdrop WHF21-PG combines sediment filtration with activated carbon in a whole-house system.

Its two-filter setup is designed to reduce particles larger than 5 microns, along with chlorine, lead, benzene, mercury, rust, sand, odours and unpleasant tastes. The coconut-shell carbon filter also helps improve the taste and smell of water around the home.

Choose this format when you want filtration for household water lines rather than a filter dedicated to one tap. Its 1-inch inlet and outlet and maximum flow rate of 15 gpm are useful details when planning a whole-house installation.

## What to know

The WHF21-PG pairs a 10" x 4.5" PP sediment filter with a GAC activated carbon filter. Together, these provide the product’s stated 5-stage filtration and target larger particles as well as several substances that can affect water’s taste and odour. Waterdrop identifies the system as NSF/ANSI 372 certified.

Because it is installed on the household water supply, the system is intended to filter water across the home, rather than only at a kitchen sink. That makes it a practical approach for people who want a single point of filtration for household water use. The stated 15 gpm maximum flow rate is another useful consideration when comparing whole-house systems with lower-flow, point-of-use options.

## Usage tips

Plan the installation around the 1-inch inlet and outlet, and follow the supplied manual for setup. The product information says a wrench is included to assist with installation and filter changes. Use the recommended replacement intervals: change the PP filter every 3–6 months and the GAC filter every 6 months. Regular replacement keeps the two filtration stages maintained for ongoing use.

Customers describe installation and cartridge changes as straightforward, and some report clearer, silt-free water, including from wells. Feedback is not uniform: some buyers also report leaks around the red button or connections. Take care with the threaded connections during installation and follow the manual’s instructions.

## How to use it

Install the unit on the home’s incoming water line so water passes through the sediment and carbon filters before reaching household outlets. The PP filter targets larger particles such as sand and rust, while the coconut-shell GAC filter is intended to reduce chlorine and help with unpleasant taste and odour. This setup suits households seeking a central filtration point, a compact under-sink filter is a different approach for treating water at a single location.

Keep track of the separate replacement schedules for the two filters. The PP cartridge is due every 3–6 months, while the GAC cartridge is due every 6 months. Following those intervals gives each stage a clear maintenance routine as part of regular household care.

## Practical questions

**What does the Waterdrop WHF21-PG reduce?** It is designed to reduce particles larger than 5 microns, as well as chlorine, lead, benzene, mercury, sand, rust, odour and unpleasant taste.

**How often should the filters be changed?** Replace the PP sediment filter every 3–6 months and the GAC filter every 6 months.

**Is it intended for the whole home or one tap?** It is a whole-house system that connects to the incoming household water line, rather than a filter designed only for one tap.

## Should you buy it?

The WHF21-PG is a strong fit for households seeking one central system that combines sediment and carbon filtration, with a 1-inch connection and a stated maximum flow rate of 15 gpm. Its scheduled filter changes make ongoing maintenance easy to plan, while the two-stage design addresses both visible particles and common taste and odour concerns.

## Images

![Waterdrop WHF21-PG Whole House Water Filter, 5-Micron, 15 GPM — 1](https://www.ofertitastop.com/i/WwPhRq6pvWcMS_oMzgyuQd_-Qss5YKmSJmFChTIcC_FVJOgN4yvZ4GYRnCI7Q4jo0jweEF8jF3JD32X4-xJVkg-qU5qKpZ05VOybC38k2mfoIhN8JVcc4A.jpg)

![Waterdrop WHF21-PG Whole House Water Filter, 5-Micron, 15 GPM — 2](https://www.ofertitastop.com/i/hHtaRQKO3JZxhriF3T_aSNx3ljWiyYxOL1tvvTlVxu5SvaXNdCp-kPreHpNvy-aqDQDD5JOIAOouaknYsJS98dmhRX4qC-25Pmb1ZEnZzew38xItbQoVnQ.jpg)

![Waterdrop WHF21-PG Whole House Water Filter, 5-Micron, 15 GPM — 3](https://www.ofertitastop.com/i/dw6CRKyzjw7kx4SFum60-Jjbf1egLHn1flqDyrZS77xcIQjwVwccSa53BJ_aEZOsnGbv9R5mRbLLsfDfj5TnRPKbTutkcyc_H74eLPx_gjiDRl1XbPZbww.jpg)

![Waterdrop WHF21-PG Whole House Water Filter, 5-Micron, 15 GPM — 4](https://www.ofertitastop.com/i/oLWC7qZEvQHuVI-uoMI3Q4SuqJITM5Kee12bKOqrTPknH-j2wikeEPg9STWg3IOovrG7s9vbGH0ZZytblH9eweI68wYBKXU5VJqgpRyPlM5z4uLYrPtM0Q.jpg)

![Waterdrop WHF21-PG Whole House Water Filter, 5-Micron, 15 GPM — 5](https://www.ofertitastop.com/i/qXSZew-ybzqUHgaLzXlvklhyAo6nqw00DSJNpdPYcoNV5xJdb95A9bfWDlGtMzRCclHK6BlrWlti8xFyqsMY-T4_lFWERY-X8DdJR3Gmp3dAmCEudoZLPQ.jpg)