We recently did a study of 1 ton window air conditioners (AC). We took a close look at the technology, the cooling efficiency and the eco-friendliness of the gadgets. We came up with a list of the top models in the category. Here they are. We invite you to give it a read.
1. Voltas 125 DY/125 DZA 1 Ton 5 Star Window AC
The top product in our list is the Voltas 125 DY/125 DZA. It is designed for 110 ft2 and smaller rooms. It has an energy rating of 5 Star, an annual electricity consumption of 822.88 units and an ISEER value of 3.31. It has a cooling capacity of 3520 watts and an air flow volume of 650 CMH.
The Voltas 125 DY/125 DZA has a pure copper condenser and a Steady Cool compressor for faster cooling. It uses R-22 refrigerant which has 0.055 ozone depletion potential and 1810 global warming potential. It has an anti-bacterial filter for eliminating living microbes and an anti-dust filter for removing dust from the house air.
The appliance cools efficiently at 50 degrees. It has Turbo mode for peak summer months. It has an active dehumidifier that senses the humidity level in the room and controls it to maintain a comfortable indoor environment.
The AC has other features for adjusting the air flow and cooling time. It has Eco mode for power-saving operation and Sleep mode for conserving power during nap times. It has a self-diagnosing function which auto-detects operational failures and fixes them. Max noise level of the AC is 53 dB. An LCD remote with glow buttons is included in the package.
2. Voltas 123 LYI/123 LZF 1 Ton 3 Star Window AC
The Voltas 123 LYI/123 LZF is without a doubt one of the best window air conditioners in the market. It is a reasonably priced single-ton AC for small 110 ft2 rooms. It has a BEE rating of 3 Star, an annual electricity consumption of 884.8 units and an ISEER value of 2.93.
The Voltas LYI/123 LZF is made of 100% copper. Copper is a better conductor of heat than aluminum. It transfers heat faster between the refrigerant and the outside air, and hence, makes for faster cooling. It is also stronger than aluminum which keeps wear and tear to a minimum.
The AC has high ambient cooling and offers mountain-like breeze even at soaring temperatures of 50 ᵒC. It has Turbo Mode for instant cool air. It has Sleep mode for energy-optimized operation during nap times. It has adjustable swing louvers and a timer for fixing the duration of cooling.
The device has an active dehumidifier which reduces humidity during monsoons. It has a dual-stage air filtration system comprising of a dust filter and a nano filter. It has an intelligent self-diagnosis feature which detects glitches in functioning and fixes them automatically.
The Voltas 123 LYI/123 LZF has an air flow volume of 400 CMH and a cooling capacity of 3350 watts. It produces very less noise, typically around 54 dB. It uses R-22 refrigerant gas which has a low ozone depletion potential of 0.055 and a moderate global warming potential of 1810. The gadget is accompanied by a remote control with an LED display.
3. Hitachi RAW511KUD Kaze Plus 1 ton 5 Star Window AC
The Hitachi RAW511KUD Kaze Plus is next on our list of best 1 ton window ACs. It is a power-saving device with a top BEE rating of 5 Star, an annual electricity input of 1030 watts and an ISEER value of 3.4. It uses R-22 refrigerant and has a cooling capacity of 3500 watts.
The Hitachi RAW511KUD has pre-coated aluminum fins and a rotary compressor. The weatherproof coating on the fins protects them from corrosion and rust. It also prevents salts and acids from getting deposition of the fins’ outer surface and keep the condenser from getting clogged with sand and other debris.
The AC is suitable for small rooms and office cabins. It has silent cooling and does not exceed 50 dB. It has a timer for pre-setting the period of operation. It has a defrost sensor and a digilock.
The RAW511KUD has an intuitive On/Off timer with advanced start-up. This feature starts up the AC and automatically adapts cooling based on the amount of heat in the room. It also has an Auto Restart function which automatically reverts to the previous AC settings after a power cut.
The appliance regulates its fan speed according to the compressor operation. It has a Powerful mode for high-speed fan action. It comes with an LED remote controller.
4. Lloyd LW12B32EW 1 Ton 3 Star Window AC
The Lloyd LW12B32EW is another top-rated 1 ton window AC. It has a maximum coverage area of 110 ft2. It has an energy rating of 3 Star, an annual electricity consumption of 905.7 units and an ISEER value of 2.91. It has a single-stage compressor and a cooling capacity of 3400 watts.
The Lloyd LW12B32EW has 100% copper condenser coils with inner grooving. The grooving accelerates the movement of the refrigerant inside the coils and speeds up heat transfer and cooling. It also increases the strength of the coils and makes them more resilient to high pressure.
As a result, the condenser lasts longer and rarely breaks down. The AC features a BLDC motor which is around 30% more efficient than other AC motors. The motor uses less electricity and cools air faster. A dehumidifier is provided for tackling humidity.
A self-cleaning feature makes sure the AC enclosure is properly sanitized to stop bacteria, mold and viruses from breeding inside it. It also has a self-diagnosing function which auto-corrects any anomalies in operation.
The Lloyd LW12B32EW uses R-32 refrigerant gas which has nil ozone depletion potential and a moderate global warming potential of 675. It has a rotary compressor. It has adjustable air direction and Auto Restart. Air flow volume of the device is 325 CMH and max noise level is 52 dB. The AC comes with a remote control.
5. Godrej GWC 12 DTC3 WSA 1 Ton 3 Star Window AC
The Godrej GWC 12DTC3-WSA is a fixed-speed window AC. It has a BEE rating of 3 Star, an annual electricity consumption of 870.87 units and an ISEER value of 2.93. It has a cooling capacity of 3300 watts and a cooling power input of 1125 watts. The air conditioner has a 100% copper condenser. It has anti-corrosion and anti-rust Blue Fin coating on the evaporator and condenser coils. It uses R-32 refrigerant gas to cool air.
The AC has an inverter compressor which offers precise cooling. It has a multi-layer acoustic jacket around the compressor to prevent sound from escaping. This keeps the AC’s noise at a minimal level, mostly staying under 60 dB sound at any given point in time.
The Godrej GWC 12DTC3-WSA not only cools air but also purifies it. It has an anti-dust filter which intercepts harmful allergens like pet hair, dust mites, bacteria, spore and pollen. It has auto air swing and adjustable louvers that push out cool air at the rate of 294.3 CFM.
The gadget is accompanied by a remote control. You can regulate the cooling using any of the various modes such as Sleep, Dry, Eco, Cool and Fan. A timer is also provided for pre-fixing the run-time and conserving power.
6. Blue Star 3W12GA 1 Ton 3 Star Window AC
Another widely sold single ton window AC is the Blue Star 3W12GA. It is perfect for compact rooms with an area of less than 90 square feet. It has a BEE rating of 3 Star, an annual electricity consumption of 863.13 units and an ISEER value of 2.91.
The AC has a cooling capacity of 3250 watts. It uses R-22 refrigerant which has low ozone depletion potential and moderate global warming potential. It has several cooling modes for adapting the temperature to your specific needs. For instance, it has Cool mode which maintains an even indoor temperature and a power-saving mode which restricts maximum capacity operation to conserve power. There is an Auto mode for automatic power adjustments, a Fan mode for greater fan speed and a Dry mode for lowering humidity on rainy days.
The Blue Star 3W12GA has a rotary compressor for faster heat dissipation. It has Blue Fin technology which protects the condenser fins from corrosion caused by moisture, salts and acids. The hydrophilic coating applied to the fins prevents water and debris from collecting on the surface of the coils, thus keeping them from getting clogged.
The appliance has horizontal and vertical swing louvers that need to be manually adjusted. The fan speed can be regulated. At low speed the AC has an air flow volume of 218 CFM, at medium 227 CFM and at high 236 CFM. Other features of the AC include Auto Restart, Sleep mode, memory function, self-diagnosis and anti-freeze thermostat. The package includes one LCD remote.
7. LG LWA12GWXA 1 Ton 3 Star Window AC
The LG LWA12GWXA is a quality window AC with Ocean Black Protection. It has an energy rating of 3 Star, an annual electricity consumption of 836.04 units and an ISEER value of 3.0. It has a cooling capacity of 3235 watts and an air flow volume of 350 CFM.
The LG LWA12GWXA has 100% copper condenser coils with two layers of anti-corrosion coating for standing up to Indian weather conditions. The first is Ocean Black Protection which fortifies the coils against moisture, atmospheric salts and acids, dust and industrial emission.
The second is Gold Fin coating which is a gold nano protective layer for preventing deposits and blockages. These two coatings extend the life span of the condenser and evaporator, and enable them to conduct heat faster for faster cooling.
The AC has 4-way air deflection. It has an automatic 2-way left and right air swing and a manual up and down vane movement. The fan has 3 speed levels.
The LWA12GWXA has dual air filtration which inhibits bacterial and fungal growth. It also reduces dust, pollen and pet allergens from the indoor air. It has a power-saving mode which optimizes power utilization by maintaining a comfortable temperature without over-cooling. It has silent operation and is seldom louder than 48 dB. The device also has a dehumidifier, an on/off timer and Auto Restart. It includes a remote control.
8. Carrier Estrella Pro 2018 1 Ton 3 Star Window AC
The final product on our list is the Carrier Estrella Pro is an affordable 1 ton window AC with a BEE rating of 3 Star. It has a 100% copper condenser for rapid cooling. It has Blue Fin technology which protects the fins from corrosion and rust. The hydrophilic epoxy coating averts clogging and deposition of atmospheric salts and acids. It makes for freer air movement between the coils for faster heat transfer. It also extends the life of the condenser and lowers maintenance.
The Carrier Estrella Pro features a Vitamin C filter which releases clouds of vitamin C into the indoor environment. Vitamin C is known to be good for the skin. It relieves stress, increases concentration and keeps you in a positive frame of mind.
The air conditioner has multiple sensors in the remote controller for gauging the room temperature and matching the cooling accordingly. It has a smart diagnosis function which identifies operational malfunctions and fixes them automatically. It has a feature called Exhaust Command which delivers healthy and fresh air.
The AC has a Nexgen Dehumidifier for keeping a check on humidity. It has Sleep mode in which the machine gradually increases the temperature while you sleep to save power. It has Auto Restart which resumes the last settings of the AC after a power outage. The memory chip of the AC saves the previous temperature settings and reverts to them upon powering up.
The AC has auto swing and a wide air deflection angle for maximum coverage. It has an integrated slinger which picks up the condensed water and recycles it by throwing it on the coils to keep them cool. It has an easy clean function which keeps the cabinet free of germs. It also has a 24-hour timer.