Thermalright CPU Coolers under $25

4 Thermalright CPU coolers under $25. Prices run $20 to $21.

Thermalright

air

+Low profile at 53mm cooler height

+Quiet at 22.4 dBA noise level

+Has 4 heat pipes

−Supports only LGA1851 sockets

$20.90

as of 11/04/2026 08:05 PST - Details

Thermalright

air

+Low 47 mm height fits small cases

+Supports AM5 and LGA1700 sockets

+Quiet at 22.4 dBA

−Low profile limits cooling capacity for high-power chips

$20.90

as of 11/04/2026 08:06 PST - Details

Thermalright

air

+Very low profile at 36mm cooler height

+Suited to small ITX builds

+Quiet at 22.4 dBA noise level

$20.39

as of 11/04/2026 08:05 PST - Details

Thermalright

air

+22.4 noise level: the lowest noise level of the 18 here

$21.19

as of 11/04/2026 08:05 PST - Details

Compare specs

Kind	Spec score	Price
air	n/a	$20.90 as of 11/04/2026 08:05 PST - Details
air	n/a	$20.90 as of 11/04/2026 08:06 PST - Details
air	n/a	$20.39 as of 11/04/2026 08:05 PST - Details
air	n/a	$21.19 as of 11/04/2026 08:05 PST - Details

Spec scores, pros and cons, and prices are explained in the How it works section of the About page.