Collection: Kitchen Water Filtration & Hot Water Tanks

Under-sink filtration and instant hot water for the kitchen: Grohe Blue chilled and sparkling water systems, Rohl and Perrin & Rowe Arolla inline filter kits, InSinkErator hot water tanks and dispenser systems, and the replacement cartridges for all of them.

Three approaches sit here. An inline filter plumbs into the cold supply feeding a dedicated filter tap or a filter-capable kitchen faucet, and is the simpler retrofit. Grohe Blue is a chiller and carbonator under the sink feeding a combined faucet — filtered still, chilled and sparkling from one spout — and needs a power outlet and clear space in the cabinet.

Instant hot water tanks are the third. The tank mounts under the sink and feeds a dedicated hot water faucet, delivering near-boiling water on demand. Two things to check: tank capacity, and whether filtration is built in. Several InSinkErator tanks ship paired with an F-1000S or F-3000S filter; the rest take one as an add-on. Every tank needs a grounded, continuously powered outlet in the cabinet, so plan that before the cabinet is finished.

Cartridges are sized and are not interchangeable between systems. Order the cartridge listed for your unit, and note the replacement interval when you install it. Free shipping on 3,000+ items across Canada.