Numbered, skimmable checklists. Every claim links to a government, university, utility, or manufacturer source.
How to size an evaporative cooler: measure volume, pick air changes, compare delivered CFM, check humidity, choose pads, plan exhaust and upkeep. Sourced from DOE/PNNL and manufacturers.
Read the guideWhen to replace evaporative cooler pads: aspen every spring, rigid media about every 5 years per MasterCool, and sooner if pads are torn, mildewed, scaled, or not soaking evenly.
Read the guideHow to start up a swamp cooler for summer: 8 steps from DOE/PNNL, University of Arizona Extension, and MasterCool. Covers pan, pads, belt, float, pump, nozzles, and exhaust.
Read the guidePrefer numbers? Use the calculator or the pad finder.