About Air Compressors for Car Garages
Size the compressor to your heaviest single tool — usually a ½″ impact wrench (4–7 CFM) or a spray gun (10–18 CFM). For mixed use, a 150–200L belt-drive 3HP unit at 14–18 CFM covers 90% of jobs.
Add a refrigerated air dryer or an inline desiccant tower for spray work — atmospheric humidity in a UK garage is more than enough to ruin a paint job.
Strong UK picks: SIP Airmate ISBD11/200, Hyundai HY3150V, Clarke SE16C200V, Sealey SAC52775B.