Small, 1-gallon compressors aren't up to heavy-duty framing jobs, but lugging a 5-gallon one upstairs to install window trim is no more productive. Let us introduce the combo compressor: plenty powerful when both tanks are assembled, but easy to break down into two separate tanks for smaller jobs or powering tools in different rooms.
Tri-Stack 5-Gallon Air Compressor OF50150TS, by Ridgid; $250; ridgid.com
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