Programmable thermostat is used extensively in medium to high end HVAC systems. The common thermostat that is used in the air conditioning control system before the advancement of microchip and electronic is a simple mechanical bi-metallic thermostat that contact before a set temperature is achieved and disconnect after a set temperature is achieved.
A dead band of few degrees known also as hysteresis is set to prevent chattering of contact that can cause damage to the load that is being controlled. This simple thermostat has greater tolerance and is not accurate. The tolerance can be as high as +/-5°C.
The advancement and the reduction of microchip price have enabled the HVAC industry to use better electronic control that is more accurate, more user friendly and efficient. Products that incorporate Liquid crystal Display, 7 segment LED display, LED, keypad/touch screen and better industrial design have been developed.
The programmable thermostats that have been certified by the government have many features that allow you to save energy. When used properly, it can save your utility bills and provide better comfort to you. If you are looking for one, make sure that the thermostat has the ENERGY STAR mark on it.
Features Of Programmable Thermostat
When installing the thermostat, remember to install the sensor in a location where the air circulation is good. Usually the sensor is located at the panel itself. Do not install it under direct sunlight, doorways or windows as this will cause inaccurate reading of the room temperature.
Here are some of the latest thermostats in the market that incorporate Wi-Fi and mobile apps that can be controlled from iOS and Android based phones and tablets. Keep abreast with the technology by using these gadgets.
Air Conditioning Thermostat
Read more about the types of thermostats available in the market.
Air Conditioner Controllers
See the basic functions of air conditioner controllers in a room air conditioner unit.
Visiting HVAC events and trade shows are one of the best way to equip yourself with the latest happenings in the air conditioning and refrigeration field. See the listing of events for year 2017-2018.
Direct Expansion System uses components such as the compressor, evaporator coil, metering device and condenser coil to expand the refrigerant and cool the room.
Zigbee is another standard wireless option to control the air conditioners in homes or buildings.
Here are the air conditioners frequently asked questions and answers.