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Digital or programmable thermostats

What is the difference between them

  • Do you want precise control over you indoor temperatures?
  •     With the strides made in micro processors it was inevitable that it would make its way into the controls of our household air conditioning and heating units. We now have a wide array of new ways to control our indoor comfort.  There are two types of the new electronic style thermostats that we highly recommend: digital and digital programmable.
  •     The difference in these two is substantial. A standard digital thermostat works just like your old one, except with a much more precise electronic sensor for temperature control.
  •     The programmable type uses the same electronic temperature sensor and then adds the ability to turn your air conditioning system on at any time of the day that you want.
  •     A basic digital thermostat uses a micro sensor for precise temperature control that eliminates those highs and lows that your old mercury bulb thermostat has. The benefits of this are better temperature and humidity control for greater home comfort. 
  •     A programmable thermostat uses the same precise temperature control and adds the ability to turn the equipment on and off at pre-set times to heat and cool our home only when we need it. These controls can be set to turn on your air-conditioning system 15 minutes before you get home from work to have the house at just the right temperature when we walk in the door.
  •     We have tried and tested many different brands an types of Electronic thermostats. There are some on the market that are less than perfect. Don't make the mistake of buying one of the "DO IT YOUR SELF" thermostats at your local home supply. There are many things that can go wrong when installed improperly.

SOME QUESTIONS TO ANSWER BEFORE BUYING AN ELECTRONIC STYLE THERMOSTAT.

  • Do I want programmable or just digital?
  • Is my system a Heat Pump or a Straight Cool
  • Should I get an auto-changeover?

 

Thermostat Definitions

Auto-changeover
    Auto-changeover thermostats automatically switch from heating to cooling as needed.

Calibration
    The relationship of the thermostat display and the actual room temperature.

Cut-in Point
    The temperature at which the thermostat calls for system operation.

Cut-out Point
    The temperature at which the thermostat stops calling for heating or cooling.

Cycle Rate
The number of times per hour that the heating equipment is cycled on at half load conditions.

Droop
    An indoor temperature control condition where the room remains below the thermostat setting. This control occurs in mild cooling conditions and is caused by the cooling anticipator resistor which provides a false heat source for the thermostat to maintain relative humidity control.

 Heat Anticipator
    (Sometimes called a Preheat Resistor.) A bias heater that shuts off the thermostat before the room reaches the thermostat setting.

 Manual or Mechanical Differential
    The difference (Degrees F) between cut-in and cut-out temperature with NO electrical load  connected to the thermostat.

Operating Differential

The difference between cut-in and cut-out when the thermostat is operating equipment differential is less than mechanical differential.

 Range

    Minimum to maximum temperature scale shown on thermostat.

 Set Point

    The temperature at which the thermostat indicator is set.


For More Information Contact:

A-Plus Heating & Air
1624 U.S. 41 S. Ruskin Fl. 33570
Tel: 813-634-8679
FAX: 813-641-8079
Internet: ssciuga@tampabay.rr.com

 

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