HomeWater Promo Codes for October 2026

Find replacement membranes for reverse osmosis systems starting at a price of $75. Ensure optimal performance for your RO unit.

Customers who subscribe to any filter replacement plan will receive up to 15% off their recurring orders. Price reduction depends on the filter type.

Explore a range of HomeWater filtration systems priced below $500. This selection includes various under-sink and some whole-house options.

All orders containing only replacement filter cartridges qualify for free standard shipping. No minimum spend is necessary for this offer.

Refer a friend to HomeWater, and when they make a purchase, you'll receive a 10% discount on your next order. Your friend also gets a deal.

Subscribe to automatic deliveries of replacement filter cartridges and save 10% on each order. This ensures timely filter changes.

Selected whole house water filter systems are discounted by up to $200 during the spring season. No minimum purchase is required.

Select faucet and shower filters are available with a 10% discount for a limited period. Improve water quality at specific points of use.

Purchase a water softener and a salt-free water conditioner together to receive a combined discount. This offer applies to specific system pairings.

Find 10% off selected under-sink water filtration systems during the Cyber Monday promotion. This includes 2-stage and 4-stage models.

Start the new year with savings on select reverse osmosis systems. Discounts apply to both 4-Stage and standard RO units.

Celebrate Earth Day with 12% off select eco-friendly replacement filters. This includes specific sediment and carbon block cartridges.

Determine your water quality with water test kits available from $25. These kits help you choose the right filtration system.

Browse a selection of under sink water filter systems starting at a price of $199. Available models include 2-stage and 4-stage options.

First-time subscribers to filter replacement plans can save 15% on their very first filter shipment. Subsequent orders receive a standard subscription discount.

Sign up for a filter replacement subscription and get 15% off all recurring filter orders. This discount is applied automatically.

Certain whole house water filtration systems are marked down by $50 to $200. This promotion is part of a seasonal sale event.