I know it is hard to guess but how much would i gain if i were to use sprinkler that would sprinkle water over my roof and windows (surface of roof over my apartment actualy isnt that big, because i got another apartment on top of me). If it were to help it would be very cost effective since there are maybe 20 or 30 days a year that i would use it, water is cheap. Evaporative cooler inside sadly isnt an option since i always seem to have between 50 and 60% humidity (prolly due to water from kitchen/bathroom)
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