Carrier Expert Advice

The Carrier Expert advice helps you in owning & maintaining your air conditioners . The following are a few frequently asked questions which we have tried to answer

General Information

What is a BTU?

Ans: It is the amount of Heat required to change the temperature of one pound of water by one degree fahrenheit.


What is One ton equivalent to?

Ans: One ton equals 12000 BTUs per hour.


What is EER?

Ans: This is a cooling efficiency with respect to power consumption.


How does an Aircondition operate?

Ans: An air conditioner operates on a refrigerant gas. The gas is at a low temp in one part of the A/c and at a high temp in an other part of the A/c. This is achieved by compressor compressing the gas continuously.

Buying and Selecting

How do I determine the AC tonnage basis my room size? And what AC should I opt for – Window or Split?

Ans: Windows are available upto 2.0 TR.Above this capacity only splits are available.Besides if the location of the room is such that a window can not be installed then also a split is the only option. Please consider following points :


  • A location where Sunlight does not fall directly on the unit.
  • There is no obstacle to air flow to and from the A/C
  • The place can give a rigid platform so that the A/C can be installed securely. This will also reduce  sound and vibration.


What kind of features should influence my purchase decision?

Ans: Following point can be considered:


  • Capacity as per requirement
  • Power consumption and durabilities of machine.

Product Information

What is the difference between Rotary and Reciprocatory Compressor?

Ans: Rotary Compressor compresses the refrigerant gas by a rotating mechanism while a Reciprocating Compressor does the same by converting a rotating action of a motor into a liner action.


What is the difference between Scroll and Reciprocatory Compressor?

Ans: Scroll Compressor has a moving scroll which creates pressure. A Reciprocating Compressor uses piston cylinder to compress the refrigerant gas.

Service and Maintenance

Do I need to buy a voltage stabilizer?and what voltage should I have?

Ans: Yes , if voltage is a problem in your area.207 to 253 V.


How often should I clean my filter?

Ans: The air cleaner should be checked and cleaned atleast once every 2 weeks or more often as may be necessary.


How much electricity would my AC use?

Ans: Depending upon A/c capacity. The Electrical Power Consumption will vary.


What is the cost of maintaining my AC?

Ans: It will depend on type and capacity.Please refer to the dealer.