What is the definition of a non-programmable thermostat? A non-programmable thermostat is a basic thermostat that allows for temperature settings to be adjusted manually. It does not come with the ability to program the settings for different times of the day and does not feature an adjustable fan speed. Generally, these thermostats are more affordable and easier to install than programmable models, but they do not offer the convenience of scheduling temperatures for different times of the day. Non-programmable thermostats are typically used in homes and businesses with simpler heating and cooling systems. They allow for the temperature to be adjusted manually, either with a dial or a set of buttons. This type of thermostat is not ideal for those who want to save on energy or automate their temperature settings, but they are a great option for those who don’t need a complex system. Non-programmable thermostats are affordable, easy to install and can be adjusted manually to