Filter matching is the real business, not filter selling

THE MARKET

Replacement-filter demand is real and specific: 'whirlpool refrigerator water filter' has 74,000 volume at $2.36 CPC, 'ge refrigerator water filter' has 49,500 volume at $2.93 CPC, and 'whole house water filter' hits 165,000 volume at $9.20 CPC. The keyword set is 50 terms deep with an average volume of 49,746 and 21 transactional keywords.

WHAT PEOPLE ARE SAYING

"How do I know what water filter to get for my Whirlpool refrigerator?","How do I change my water filter on my Whirlpool refrigerator?","How do I change the water filter in my refrigerator?"

THE GAP

Existing commerce flows are built to sell filters, not identify them. That creates wrong-part returns, support burden, and a bad experience when models like Whirlpool, GE, and Samsung have multiple variants.

THE BUILD

Build a model-number/photo lookup that returns the exact replacement filter, then route to the cheapest reorder option with affiliate tracking. Sell the merchant dashboard first: match accuracy, conversion lift, and return reduction are the ROI story for retailers and installers.

WEEKEND MVP

Ship a model-number search page for the top 20 branded filters and track clicks to reorder.