The most convenient, comfortable, healthy way to cool your home using your existing swamp cooler.

“the most innovative way to control a swamp cooler household… …one of the most forward thinking companies when going with swamp cooler technology!”

– Jack, Colorado

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Using one of these?

Keep your cooler

Replace the control

Get more comfort and convenience

Drop-in simplicity

Installs in minutes

Works with existing coolers

Active Temperature ControlTM

Controls blown air temperature (others just switch cold air on & off)

Continuous ComfortTM: reduced hot and cold spots, less temperature cycling

Easy Operation

Easy Wifi and on/off time setup

Manual option

Helps with installation and service

Complete control is yours

Colorful and intuitive

Touchscreen controls, function by color

More Sustainable

Efficient evaporative cooling pairs well with heat pumps

Repairable construction, designed to last


Fewer temperature extremes, less dryness

Save $$$$ by NOT switching

Keep your cooler, save 80% on cooling cost each year (and thousands on installation)

hecho en Nuevo Mexico

Designed & made in Los Ranchos

Local installation, service and support

Our enclosure is 3D printed of PLA from Hatchbox.

The Roadrunner Comfort controller is much more than a thermostat, but this still applies: How a Swamp Cooler Thermostat can make your home more comfortable

by Nangeroni Design with help from New Mexico Tech and support from Los Alamos Labs

Ready for some history?

Evaporative cooler controller evolution

These old controllers are all still being used in many homes throughout the US southwest.

Unmarked Switches

Early evaporative cooler (EC) controllers used individual switches to turn on the water pump and the fan, with a third switch to select hi/lo fan speed.

The Rotary Knob

This rotary control offers simplified operation and labeling of switch positions (imagine that!). An improvement on separate switches, it uses a single knob to select fan and pump combinations.

SelectaStat II

An early thermostat for evaporative coolers, it uses existing high voltage wiring and a mechanical sensor to control the temperature. It works by turning on and off the cooler, so the air coming in goes back and forth between none and the coldest temperature possible.

Dial Cooler Controller

This digital thermostat uses individual relays to switch the pump and fan motors. It installs easily in place of rotary or toggle switch controls. But the tiny display can be hard to read. And it’s still just switching the system on and off.


This controller provides a larger display but requires the installation of a relay box, usually at the cooler itself, plus new low-voltage wiring between the cooler and the controller. It puts circuits and relays outdoors, likely shortening their lifetime. And it still switches everything on and off.


An improved version of the same thing. A remote thermostat with an outdoor weatherproof box looks more modern and has more buttons but still requires expensive installation. And it still switches everything on and off.

Extra credit reading