Topic
Installation
Most performance complaints trace back to installation: undersized ducts, no path for air to leave, or a unit pulling hot roof air. Get these details right once and the cooler works as rated.
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Swamp Cooler Installation Guide: How to Install a Roof, Wall or Window Evaporative CoolerTo install a swamp cooler, set the unit level on a solid roof stand, wall bracket or window frame, connect a duct or discharge into the house, run a cold water line to the float valve, route the bleed-off and drain, provide a dedicated electrical circuit and control, and open enough relief air for the house to exhaust.
All installation guides
- Ductwork for Evaporative Coolers: Drops, Duct Sizing, Diffusers and Insulation
How to size and lay out swamp cooler ductwork: roof jack and drop, main and branch duct sizes by CFM, diffusers, insulation, winter dampers and AC duct reuse.
- Venting and Relief Air for Swamp Coolers: How Much to Open, Where, and Why
How to vent a house with a swamp cooler: the 1 to 2 sq ft per 1,000 CFM rule, worked window math, ceiling relief dampers, attic venting and pressure symptoms.
- How to Install a Window Swamp Cooler (Evaporative Window Unit)
Install a window evaporative cooler safely: measuring the opening, support brackets, level and pitch, filler panels, water hookup, drain, power and relief air.
- How Much Does It Cost to Install a Swamp Cooler? 2026 Line-Item Price Guide
Typical 2026 swamp cooler installation costs by job type: rooftop swap, new install, side-draft, ducted and window units, with line items, labor and DIY tips.