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Right Size. Right Comfort.

How to Choose the Right AC Based on Room Size

Choosing the right air conditioner size is crucial for achieving optimal cooling, energy efficiency, and comfort. If the AC is too small for the room, it will struggle to cool effectively, leading to discomfort, higher electricity bills, and overworking the unit. On the other hand, an oversized AC will cool the room too quickly, leading to short cycles, higher energy consumption, and potential humidity issues. Therefore, selecting the correct AC size ensures that your space stays cool and comfortable while minimizing energy costs

Room Size vs. AC Tonnage

AC Tonnage Guide Based on Room Area

Three Acs
Room Size (sq. ft)
Suggested AC Capacity
Up to 120 sq. ft0.75 ton
120 – 150 sq. ft1.0 ton
150 – 180 sq. ft1.2 ton
180 – 250 sq. ft1.5 ton
250 – 400 sq. ft2.0 ton

Factors That Affect AC Size Choice

Beyond Room Size: What Else Matters?

Ceiling Height

Higher ceilings = more air volume to cool

Insulation

Poor insulation increases cooling demand

Occupancy

More people = more heat generated

Calculating Air Conditioner Power Consumption

Understanding your air conditioner’s power consumption helps in estimating energy use and planning for efficient cooling. Two major factors affect power usage: AC tonnage and energy efficiency star rating.

AC Tonnage
Approx. Units Consumed per Hour
3-Star Efficiency
5-Star Efficiency
1 Ton0.8 – 1.0 unitsModerate power usageLower power usage, more efficient
1.5 Ton1.2 – 1.5 unitsHigher consumption than 1 TonImproved efficiency with less energy
2 Ton1.8 – 2.2 unitsConsumes more energyBetter energy savings for larger rooms

Why Choose the Right AC Based on Room Size?

Choose

Optimal Cooling
Ensures even and efficient room cooling.
Energy Efficiency
Consumes less electricity and saves on bills.
Longer Lifespan
Prevents compressor overload and wear.
Better Humidity Control
Maintains indoor comfort effectively.
Smart Investment
Balances cost, performance, and comfort.

avoid

Poor Cooling
Undersized units struggle to cool the space.
Higher Bills
Incorrect size leads to power wastage.
Frequent Repairs
Improper sizing increases wear and tear.
Clammy Air
Oversized units don’t dehumidify properly.
Wasted Money
Overpaying or constantly repairing.

Choose the Right AC for Comfort and Efficiency

Selecting the correct air conditioner based on room size ensures optimal cooling and energy savings. Whether you need a small, medium, or large AC, make sure it matches your room’s requirements for the best performance.

Conclusion

Choosing the right AC size is crucial for energy efficiency and comfort. A well-sized air conditioner will help reduce electricity consumption, ensure effective cooling, and provide long-term value. Consult with experts if unsure about the right AC for your space. For a professional recommendation, visit Rathna Fan House today!

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