Carrier 1.5 Ton 3 Star Window AC (Copper,ESTRA Nx R32,CAW18SN3R39F0)

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Build Aspect

The CAW18SN3R39F0 or Estra NX is a 1.5 ton 3 star non-inverter compressor air conditioner from Carrier. Overall the unit is well built and weighs more than half a ton at 54 kilos. The design is simple and feels quite cheap honestly. Same goes for the remote. This AC feels a budget proposition by its looks all the way. Moreover it seems that carrier have now removed the PM2.5 filter which was previously included with this model.

Performance Aspect

Performance wise the AC is a chilling machine and manages to effectively cool a mid sized room in under 30 minutes with ease, despite an average only 17401 BTU. A strong air flow capacity of 500 CFM puts some split ACs to shame and increases the overall effectiveness. Furthermore an ISEER of 3 is rather low and not anything to boast about. Regardless this 1.5 Ton window AC is a decent performer especially considering its price, strong airflow and overall cooling.

Also: Click here to view Top-Rated Panasonic 1.5 Ton AC on Amazon.


Entry level price.
Well built and solidly made.
Good fan speed at 500 CFM.


Upper outdoor temp limit 50 degree C.
AC and remote both looks rather cheap.

Product Details

  • Windows AC: Economical and easy to install
  • Capacity: 1.5 Ton. Suitable for medium sized rooms (111 to 150 sq ft) ; Other Convenience Features: Auto Fan Speed, Energy Saver Mode,Dry Mode,Turbo Mode, Temprature display, Auto off/on timer, Auto Swing mode, Auto Restart, High ambient working upto 50 degree C with Anti corrosion Coating (Blue)
  • Energy Rating: 3 Star. Annual Energy Consumption: 1315.98 units. ISEER Value: 3 (Please refer energy label on product page or contact brand for more details)
  • Manufacturer Warranty : 1 year on product, 5 years on compressor

High ambient working in 50 degrees Celsius

This functionality keeps you cool even at a temperature as high as 50 degrees Celsius. So you can worry-freely relax at home or work peacefully at the office during the scorching summer temperatures.

Turbo Mode

This mode gives you the desired comfort by reaching the set temperature by running the fan at the highest speed. It is perfect for the morning time when your return from work and need a wind of air to dry off all your sweat.

Sleep Mode

This mode ensures a comfort cooling experience by increasing the temperature by 1 degree per hour for the first two hours, then holding it steady for the next 5 hours and finally switching off the AC.

Auto Restart

This feature lets you relax and restores the previous cooling settings automatically that are once adjusted by you for your comfort. The AC restarts with the previous setting automatically if it turns off unexpectedly due to a power cut.


In The Box
  • 1 AC Unit
  • Remote
  • Batteries
  • Manual
Model Name
  • 18K ESTRA Nx (3 STAR) WRAC AC R32
  • Window
Capacity in Tons
  • 1.5 Ton
Star Rating
  • 3 Star BEE Rating
BEE Rating Year
  • 2021
  • White
  • Estra Nx
  • 500
Cooling Capacity
  • 5100 W / 17401 BTU
  • Rotary
  • Yes
Remote Control
  • Yes
  • R32
Operating Modes
  • Dry Mode, Turbo Mode, Sleep Mode, Auto Fan Speed Mode, Energy Saver Mode
Technology Used
  • Insta Kool
Condenser Coil
  • Copper
Indoor W x H x D
  • 66 cm x 42.8 cm x 66 cm
Indoor Unit Weight
  • 54 kg
Performance Features
Indoor Noise Level
  • High – 56 dB, Low – 50 dB
Panel Display
  • 7 Segment LED Display
Indoor Temperature Indicator
  • Yes
Turbo Mode
  • Yes
  • 3 W/W
Other Performance Features
  • Temperature Display on Panel, Auto Off Timer, Auto On Timer, Auto Swing, Auto Restart, Anti Corrosion Coating (Blue), High Ambient Working at 50 DegreeC at AC 230 V Rated, 2 Way Air Direction, Auto Fan Speed
Body And Design Features
Evaporator Fin Type
  • Blue Coating
Condenser Fin Type
  • Bare
Stepped Louvers
  • No
Air Flow & Filter Features
Auto Air Swing
  • Yes
Other Air Flow Features
  • 3 Step Fan Speed
Anti-bacteria Filter
  • No
Dust Filter
  • Yes
Deodorizing Filter
  • No
Convenience Features
Auto Restart
  • Yes
  • Yes
Child Lock
  • No
Quiet Mode
  • No
Sleep Mode
  • Yes
Memory Feature
  • No
Self Diagnosis
  • No
Emergency Operational Button
  • Yes
Power Features
Power Requirement
  • AC 230, 50 Hz
Power Consumption
  • 1700 W
Remote Control Features
LED Backlit Buttons
  • No
Night Glow Buttons on Remote
  • No
Battery Type
  • 2 AAA Batteries
Other Remote Control Features
  • Non LCD Remote


  1. ujwal karmakar

    very gud ac cooling and cheap price.

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