Arizona’s new heat officer said Friday that he is working with local governments and nonprofit groups to open more cooling centers and ensure homes have working air conditioners in a more unified effort to prevent another ghastly toll of heat-related deaths this summer.
Do you have separate discrete units to pull that off? Or are they both tied into the same air circulation system?
Discrete units but both attached to the same ductwork.
Since A/C needs to operate on a closed system there’s a one-way damper just below the Evaporative cooler where it attached to the duct work. The evaporative cooler on the other hand works best in an open system, so you can direct airflow best by opening windows in rooms that need more cooling.
Two separate controls as well. The A/C is attached to a standard thermostat. The Evaporative cooler is simple by comparison, just a manual knob with Off, High Fan, Low Fan, High Cool, Low Cool, and Pump only. The last three run the pump to keep the pad wet.
At night, Low Fan might be all that’s needed even in the summer, just moving air. The cooler moves A LOT more air around the house than the A/C does since it has a massive spinning drum fan and an open airflow system.
That’s a clever arrangement! Thanks for sharing. I’m in Colorado and we get dry enough that evaporative cooling is effective, but home came with AC, which means everything just gets dry and you static shock all your electronics to death as your power bill spins up to infinity. I never considered that one could have a dual system to switch between. What is your temperature differential with the evap operational? 20 degrees or so?
Yeah about 15-20 normally, but can get up around 30 around peak summer with zero humidity. Above about 100 outside though it just can’t keep up and the AC is needed even with low humidity.
So basically above 100 and above about 40% or so humidity, the AC is needed, otherwise the evap cools better and is a lot cheaper to run.