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Understanding Your Thermometer

You know how to change the temperature, but do you understand what each control on your thermostat means? All Temp can help you make the most out of your thermostat.

Thermostat Types

There are four common types of thermostats: mercury contact, mechanical contact, digital, and electronic programmable. Mercury and mechanical contact thermostats are common in older homes, while digital and electronic programmable thermostats are common in newer ones.

Mercury Contact Thermostat

This analog thermostat used to be the most common type of thermostat, meaning if you have an older HVAC system, you most likely have this model. In order to change the temperature of this model, you simply move the bimetallic strip. This thermostat can only adjust the temperature and is not programmable.

Mechanical Contact Thermostat

This type of thermostat operates exactly the same as a mercury contact thermostat with one exception — it’s less accurate. To change the temperature, move that bimetallic strip the same way you would with the previous model.

Digital Thermostat

Digital thermostats use electronic controls, rather than a bimetallic coil, to change the temperature. These thermostats typically have large displays and a few switches. Switch controls include “heat”, “off”, and “cool.” To change the temperature, press the “up” or “down” button. Digital thermostats are not programmable.

Electronic Programmable Thermostats

These thermostats are becoming more and more common in houses thanks to their programmable nature, which allows you to custom set your temperature controls. Custom set your controls based on the time of day, day of the week, as well as custom controls. Programmable thermostats can even tell you when your air filter needs to change. Some models, such as Nest, can even be controlled manually from your smartphone. Electronic programmable thermostats can help cut costs, as you can raise temperatures when no one is home.

Have a question about your thermostat? Contact All Temp, located in St. Cloud. With over 20 years of experience serving the Central Florida area, we can help walk you through using your thermostat and even discuss upgrading your HVAC unit. Just give us a call at (407) 857-7800 and we can get started on cooling your home! 

Posted in AC Maintenance In Kissimmee