Split or Window AC? Find Out What’s Best for Your 12×12 Room (2025)

Choosing the right air conditioner for a 12×12 room (144 sq. ft.) can be tricky. Should you go for a window AC or a split AC? Both have pros and cons in terms of cooling efficiency, installation, energy consumption, and cost.

This detailed guide compares window AC vs. split AC for a 12×12 room, helping you make the best decision based on performance, price, maintenance, and space requirements.

Key Differences: Window AC vs Split AC

Before diving deep, here’s a quick comparison table:

1. Cooling Performance for a 12×12 Room

Window AC Cooling

• Best for small to medium-sized rooms (up to 150 sq. ft.).
• Uses a single unit (compressor + blower inside).
• Pros:
  • Cools quickly due to direct airflow.
  • Cheaper upfront cost.
• Cons:
  • Less efficient in extreme heat.
  • Can be noisy.

Split AC Cooling

• More efficient for consistent cooling.
• Indoor unit (blower) + outdoor unit (compressor).
• Pros:
  • Better airflow distribution.
  • Quieter operation.
• Cons:
  • Higher initial cost.
  • Needs professional installation.

Verdict: If you want better cooling with less noise, a split AC is ideal. For budget-friendly cooling, a window AC works fine.

2. Installation & Space Requirements

Window AC Installation

• Fits into a window frame or a wall cutout.
• No extra space is needed for the outdoor unit.
• Best for:
  • Renters (easy to uninstall).
  • Homes with limited outdoor space.

Split AC Installation

• Requires two separate units:
  • Indoor unit (mounted on a wall).
  • Outdoor unit (needs balcony or open space).
• Best for:
  • Permanent homes.
  • People who prefer a clean, modern look.

Verdict: If you don’t have outdoor space, a window AC is better. For aesthetic appeal and flexibility, go for a split AC.

3. Energy Efficiency & Electricity Bills

• BEE Star Rating matters for long-term savings.
• Split ACs usually have higher energy efficiency (up to 5-star).
• Window ACs mostly come in 3-star variants, consuming more power.

Example (1.5 Ton AC for 12×12 Room):

Verdict: A 5-star split AC saves ₹2,000–₹4,000/year in electricity bills.

4. Noise Levels: Which is Quieter?

• Window AC: Noisier (50–60 dB) because the compressor is inside.
• Split AC: Quieter (30–40 dB) since the compressor is outside.

Best for:

• Light sleepers? → Split AC (less disturbance).
• Don’t mind noise? →  The window AC works fine.

5. Maintenance & Durability

Verdict:

• Window ACs are easier to maintain but wear out faster.
• Split ACs last longer but need professional servicing.

6. Price Comparison (1.5 Ton AC for 12×12 Room)

Verdict:

• Budget pick? → Window AC (cheaper upfront).
• Long-term investment? → Split AC (saves on bills).

Final Recommendation: Which is Best for a 12×12 Room?

Choose a Window AC If

✔ You’re on a tight budget.
✔ You rent and need a portable option.
✔ You don’t mind noise.

Choose a Split AC If

✔ You want quieter, more efficient cooling.
✔ You own your home and prefer a sleek look.
✔ You’re okay with higher upfront cost for long-term savings.

FAQs: Window AC vs Split AC for 12×12 Room

Q1. Which consumes less electricity, a window or a split AC?

• Split AC (especially 5-star) consumes 20–30% less power than a window AC.

Q2. Can I install a split AC myself?

• No, it requires professional installation due to refrigerant handling.

Q3. Is a 1-ton AC enough for a 12×12 room?

• Yes, but a 1.5-ton AC cools faster in hot climates.

Q4. Which lasts longer, a window or a split AC?

• Split ACs (10–12 years) typically last longer than window ACs (8–10 years).

Q5. Does a split AC cool better than a window AC?

• Yes, due to better airflow design and inverter technology in many models.

Conclusion

For a 12×12 room, both window and split ACs work, but your choice depends on:

• Budget → Window AC
• Energy savings & noise → Split AC

If you can afford the higher initial cost, a split AC is the better long-term investment. Otherwise, a window AC is a budget-friendly solution.

Looking to buy?  Check the latest models from LG, Daikin, Voltas, and Blue Star for the best performance!