Whole-house evaporative cooling (E/C) units draw exterior air through evaporating-water filtration that results in a temperature drop of 15º to 25º F of the air being forced into the interior space. Its use is limited to dry and arid climate zones where evaporative phase-change conditions are good.
You will find that the cost of average whole-house evaporative cooling varies by type of unit, its air flow (cubic feet per minute, CFM) and water pumping capacity, preparation and special needs, and the labor rate.
In the following tables the Labor Cost figure is what the able DIY person should expect to save by performing the corresponding tasks.
Whole-house E/C: to cool 1600 sq.ft.; include delivery, all material, equipment, and waste.
|Item||Unit Cost||Quantity||Line Cost|
|E/C unit: 6500 cubic feet per minute flow, 115 VAC, roof mounted; with motor, pump, and hardware.||$874||each||1||$874|
|Upgrade: install new circuit; 30 feet of ROMEX surface mounted cable, #10/3; 30 amp breaker into existing space; two outlets with box and cover.||$1.66||per foot||32||$52|
|+ Labor Cost (install E/C unit)||$34||per hour||8||$272|
|+ Labor Cost (upgrade circuit)||$42||per hour||3||$126|
Prices range from $874 (whole-house E/C for 1,600 sq.ft. - DIY) to $1,324(whole-house E/C for 1,600 sq.ft. - upgraded) and also vary depending on your zipcode:
Local costs have been calculated by accounting for labor and material cost differences across different cities. To get accurate cost estimates, indicate yours: