Bathroom Fan Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

Honeywell is the best-performing bathroom fan brand in July 2026, moving 109,000 units across 3 ASINs for 47.0% of Top 10 volume. DREO follows with 89,000 units (38.4%), ahead of Warmco on 10,000 units (4.3%).

With 6 brands splitting the Top 10 and 89.7% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $21.95 to $53.60, which frames the price band a competing listing has to justify.

Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, 2 ASINs forced its way in: B00YU1O15U booked 9K units at $27.06, with ▲ 125.0% MoM change. On the growth side, B0GS348RXM leads positive momentum with ▲ 400.0% MoM growth on 5K units.

The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.