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Click here to learn about cookies. For many people the thermostat in their house is a device that is set to one temperature and is rarely touched again, once a comfortable room temperature setting has been found that suits all the occupants of the home. A thermostat is a device in the home that is connected to the central heating system and is used to control the overall temperature of the system by monitoring the ambient temperature in the home.
This temperature control device can then switch on or off the central heating system depending on the temperature in the home and the setting of the thermostat.
Home thermostats can be broken down into two distinct types, analogue, mechanical thermostats with a dial and the more modern equivalent, digital thermostats.
In addition to this some older thermostats may be electromechanical thermostats which means they combine both electronic operation with some mechanical mechanism to operate. Disposal of some of these older thermostats may be a little problematic since they sometimes contain mercury. One of the most common manufacturers of thermostat you my find in your home is Honeywell. When it comes to the older, analogue design the device itself is usually marked in degrees, and the operation is simple; just twist the temperature dial until the desired temperature is reached.
If you're planning to install a retrofitted zone-control system, here's what you'll need to put on your shopping list:. The number of zones your home needs will affect the way you set up the system. In a two-zone system, with the zones being fairly equal in size, each zone's ductwork must be capable of handling up to 70 percent of the total CFM cubic feet per minute of air produced by your HVAC system. In a three-zone system, the zones need to be as close in total area as possible. In this case, each zone's ductwork should be able to handle up to 50 percent of the total CFM.
Installing a four-zone system requires a bit more work. The ducts need to be enlarged by one inch, and they require a static pressure relief damper and high- and low-limit protection.
To avoid major damage, be sure not to completely cut off the airflow over the heat exchanger or coil of your HVAC system. Talking thermostats may seem like one of those unnecessary futuristic inventions straight out of an episode of "The Jetsons," but they're actually quite practical for senior citizens, people who are visually impaired or blind, and other people with special needs.
Talking thermostats announce the time , day, temperature setting and room temperature, plus they have audio instructions for setup. Even though talking thermostats are most helpful to people with vision impairments, they can also be useful to the general population. It's often difficult to know when there's a problem in your heating and cooling system, and major problems can cost thousands of dollars to repair. Even minor problem can lead to far more serious and costly repairs if not diagnosed in a timely manner.
Talking thermostats can end up saving you lots of time, money and stress because they alert you when you need to have your system serviced. They also let you know when you need to change the system filter. Promptly replacing the filter lowers the cost of heating and cooling your home and also helps people control allergies and asthma. Some talking thermostats even recognize and respond to voice commands. You simply say an activation word, such as "thermostat," followed by a command like "raise" or "lower," and the rest is automated.
Talking thermostats are able to do this because they use DSP, or digital signal processors , to process audio and speech. First, the DSP filters out real-world analog signals.
Then, the microprocessor changes them into digital signals. After the signals have been converted, they're sent through application-specific integrated circuits , or ASICS, and the thermostat reacts in real time.
Because talking thermostats are high-end, cutting-edge accessories to heating and cooling systems, they come equipped with all of the user-friendly functions that other quality thermostats boast. A built-in time-delay function keeps your system from immediately starting or stopping if it's accidentally adjusted.
Stopping and starting HVAC systems puts a lot of wear and tear on the compressor, which is the most expensive part of the system, so the delay function is quite important. Talking thermostats are also programmable, which allows you to heat or cool your home only when it's necessary.
If you turn down the heat 1 degree Fahrenheit 0. Turn it down 10 degrees Fahrenheit 5. You're pretty fortunate if you're able to own a vacation home, but it also means you'll be paying to heat and cool two houses. Programmable home thermostats can actually allow you to keep the heat or air turned off until the day you arrive, but it requires precise planning of your comings and goings in order to get the desired result.
Telephone thermostats, on the other hand, allow you to heat or cool your home with a simple phone call. Telephone thermostats replace your existing home thermostats. They connect to both the heating and cooling system and to your phone line. You simply have to call your property and enter a password on a touch-tone phone to access the controls. Then, you can adjust not only the temperature setting but the entire system mode as well. Telephone thermostats can handle these functions because they use digital microprocessors as well as a touch-tone detector and telephone interface module.
Essentially, you can "talk" to your home thermostat via telephone thanks to the internal telephone access module. A separate phone line isn't necessary, and the telephone thermostat can even coexist with answering machines or voice mail.
However, if you have a DSL high-speed Internet connection, you will need a DSL filter on the telephone line that connects to your talking thermostat. With the advent of the smart phone and their handy applications, or apps, you can bypass the land line altogether to control your home's temperature.
Wi-fi based smart thermostats are available now and allow users to control their home's thermostat with the help of a touch-screen smart phone. There are quite a few apps already available, and like most smart phone apps, they aren't very expensive, with a range of free to a few dollars.
As technological advancements make their way to simple devices like thermostats, consumers benefit greatly from the combination of features. Ideally, the thermostat should be located in the part of the house where people spend the most time. It should be about 5 feet 1. It should not be exposed to any heat sources other than the air in the room, such as sunlight, other appliances, heater vents, windows or hot-water pipes. It's also best not to put a thermostat near stairways or in corners because they affect the circulation of air.
Sign up for our Newsletter! Mobile Newsletter banner close. Mobile Newsletter chat close. Mobile Newsletter chat dots. Mobile Newsletter chat avatar. Mobile Newsletter chat subscribe. Household Appliances. This strip carries electricity through the connected circuit, switching on the heating. As the strip heats up, one of the metals expands enough to open the circuit and switch off the heating, cooling the room down.
To regulate this mechanism on your thermostat, use the temperature dial that you can adjust to the preferred temperature. This sets the point for the circuit to switch off and on. Metal strips take some time to expand or contract, so the process can be rather gradual. One solution to this is to look for a mechanical thermostat with a gas-filled bellows sandwiched in between two metal discs. These metal discs are designed to have a fairly large surface area, allowing them to react quickly to heat.
The gas in the bellows is what expands and contracts, controlling the electric circuit and heating accordingly. Share Email Whatsapp Twitter Facebook. What is a thermostat? Within this basic framework, there are a number of features and options: Some thermostats are wireless and battery-operated Others are connected with wires to the boiler itself. Programmable thermostats use a set schedule to run the heating at certain times of the day.
Smart thermostats learn and adapt to your routine You can find out the differences between programmable and smart thermostats here. Low cost boiler repairs by expert engineers.
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