Swamp coolers have many positives about them, from low-cost electricity prices to adding moisture to a home.
Most homes with a swamp cooler use a manual evaporative cooler switch to control their swamp cooler.
Types of Swamp Evaporative Swamp Cooler Thermostats Controllers
- Manual On / Off Switch
- Thermostat Controller
- Smart Wireless Controllers
A manual switch simply turns a unit on or off along with other features such as fan-only mode.
Manual switches work well for many people but there are also set-it-and-forget options like a thermostat controls.
A standard thermostat can also be used to turn on and off a swamp cooler.
Thermostats are usually used for standard air conditioners but can also be used with an Evaporative cooler.
Manual switches are often replaced with a thermostat for automatic controls.
New smart wireless controls have become available in recent years.
The units have the ability to turn on or off a unit wirelessly or set with a timer to turn on or off.
There are many units available, with some of our favorite picks below.
As always, be sure to read the reviews on Amazon or elsewhere to be sure a unit is a good fit for you.
*This post contains affiliate links.
Our Picks for Best Evaporative Swamp Cooler Thermostats Controllers
- DIAL 7617
- LASCO 36-0233
- Nashone Wireless
- MasterStat
- Emerson 1F51N-619
The Dial 7617 is a popular digital thermostat used by many to control a swamp cooler.
Like any thermostat, it can have a set temperature and will automatically turn on and off a cooler.
It also has other built-in features such as wetting the pads by turning the water pump on before starting the blower motor.
This helps maximize the cooling power and helps keep electrical costs lower.
The Dial 7617 is a good unit and worth a look for anyone looking to have an evaporative cooler turn on and off automatically.
This is a classical analog swamp cooler control switch that was very popular before digital became the standard.
It still is widely used but is a manual switch meaning there is no automatic on and off.
While there are many other options, it is a good low-cost dependable switch that works well and gets the job done.
This unit from Nashone is a new unit that controls a cooler wirelessly.
It has an AC plug that goes between an appliance such as a cooler and a remote control to control it wirelessly.
The remote has a built-in temperature sensor to turn on and off the cooler automatically.
It is a nice controller and easy to set up by simply placing the plug between the AC outlet and cooler.
Of course, the AC outlet plug location will determine if this is a good option or not.
This MasterStat controller is digital and works with a 2-speed motor up to 1HP – 120 V or 2HP – 240 V
It uses a control box that works with the thermostat to control a cooler.
It requires a bit more wiring than other options but works very well once hooked up.
The Emerson 1F51N-619 is a classic thermostat for a swamp cooler for those who like the retro look.
It works very well and will automatically turn on and off an Evaporative cooler.
The unit is all mechanical, with a lever on the side to set the temperature range.
Evaporative Swamp Cooler Thermostats Comparison Chart
| Name | Temperature Sensor | Manual Switch | Wireless |
|---|---|---|---|
| DIAL 7617 | Yes | Yes | No |
| LASCO 36-0233 | No | Yes | No |
| Nashone | Yes | Yes | Yes |
| MasterStat | Yes | Yes | No |
| Emerson 1F51N-619 | Yes | Yes | No |
How To Install an Evaporative Swamp Cooler Thermostat Controller
Installing a thermostat that controls a cooler is fairly easy to do and done by many DIY individuals.
The wiring color codes are usually the same and even though it helps to be a handy person, installing one is not that difficult.
The correct wiring is connected for the water pump and blower motor.
Depending on the switch and blower motor other options will also be available such as Fan Mode, Pump Mode, and possibly different speed settings.
Always follow the schematics that come with a thermostat controller as there can be differences.
Summary
In the past, a manual switch for a swamp cooler was the only option available, but many more options are now available.
Many people still use a manual switch since they work well and are dependable, but one of the other models would be a better choice for those looking to shut a unit on and off automatically.
Hooking up a thermostat for a swamp cooler is not difficult but does require some wiring knowledge and skills, so be sure to call a technician if in doubt.
120/240 volts are commonly used in swamp coolers, and precautions must be taken to prevent harm or damage to the equipment.
Do you have a favorite swamp, cooler thermostat? Let us know your thoughts below.
i’d like to purchase to elz-stat dial 7625 thermostat-it appears to be out of stock every where??? do you know where i can purchase it or when it will be back in stock?? hate the digital-love the manual type-but programable for auto,etc.
I have the Dial 7617 but does not sense temperature changes, if I set it up to 85 as the temperature risen in a digital thermostat I have for heater, cooler stays on eventhoug temperature is below the one set
I have a similar problem with the Dial Thermostat controller. When I turn the cooler on by lowering the set temp, and the cooler runs for a while, the temp that registers on the controller actually goes up. Does not make sense. Even if I calibrate the temp before running it
I tried to get my Nashone wireless thermostat to work, but either the hand-control unit is broken, or the directions for setting the program are useless. I’ve tried and tried to set it and make it work , but it just won’t.
Wasn’t sure if I needed to buy relays or something other than the thermostat controller. I have the controller and will attempt this install later today. I will let you know how it turns out. (Given the E.M.T.’s fibrulator works)!
I also connected a honeywell wireless thermostat inline with my white rogers. Replaced the white rogers analog thermostat with a Honeywell RTH6580WF. Only have one speed. I choose low speed.
it required the 21D28-6, Evaporative Cooling Thermostat & Control
Are there any week-day programmable thermostat that work with evaporative coolers?
I have been told they do exist but never get an answer on which ones.
I found the emerson sensi to say it has more compatibility than ever…but not sure if it will work with evaporative (ducted) air conditioners.
If you have any suggestion it is kindly appreciated.
I connected a Honeywell day of the week controller in series with my low voltage White-Rogers thermostat.
I also connected a honeywell wireless thermostat inline with my white rogers. Replaced the white rogers analog thermostat with a Honeywell RTH6580WF. Only have one speed. I choose low speed.