7 Important Things You Should Know Before Buying an Air Conditioner

What is an Air Conditioner?

An air conditioner is an electrical device that regulates air temperature, humidity, cleanliness, and movement. It is mainly used in enclosed spaces to create a comfortable climate for people and ensure the proper functioning of technological processes.

Functions of an Air Conditioner

• Cooling the air – lowers room temperature during hot weather.
• Heating the air – some models can also heat during winter.
• Air purification – filters dust, smoke, allergens, and microorganisms.
• Humidity control – maintains balanced air moisture levels.

7 Important Things to Know Before Buying an Air Conditioner

1. Power Selection According to Room Size (BTU or kW)
The capacity of an air conditioner shows its ability to cool or heat. A unit not suited to the room size will either:
• Not cool/heat effectively,
• Or consume excessive energy.

For example:
• For 10–20 m²: 9,000 BTU
• For 20–35 m²: 12,000–18,000 BTU
• For over 35 m²: 24,000 BTU and above
What to do? Measure accurately and inform the seller.

2. Energy Efficiency and Operating Costs
Energy consumption affects both monthly bills and long-term use.
Two key indicators:
• Energy class: A+, A++, A+++ – the more “+”, the more efficient.
• Inverter technology: Operates in a steady mode rather than frequent on/off, saving energy and working more quietly.

3. Type of Air Conditioner – Which One Suits You?

4. Heating Function (for Year-Round Use)
If you want to use it in winter too, choose models with heating capability. These are more efficient than electric heaters.

5. Air Filtration and Health
Air quality matters as much as temperature.
Look for:
• Dust and allergen filters
• HEPA or plasma filters
• Ionizer and antibacterial features
These are especially important for allergy sufferers and families with children.

6. Noise Level (measured in dB)
Quiet operation is essential in bedrooms and offices. Ideal noise level for indoor units:
• 20–30 dB – silent
• 30–40 dB – moderate
• 40+ dB – noisy
Inverter models are generally quieter.

7. Installation and Maintenance
Efficiency doesn’t end with purchase – proper setup and regular maintenance are key.
Consider:
• Professional installation services
• Official warranty and service
• Seasonal check-ups (filter cleaning, gas check, etc.)
These ensure long-term use.

Frequently Asked Questions About Air Conditioners

What should I consider when choosing an air conditioner?

• Room size, BTU capacity, energy consumption (efficiency class), quiet operation, and additional features (like air purification, smart control) should be considered.

What is BTU and how is it calculated?

• BTU (British Thermal Unit) indicates cooling or heating power. It should be calculated considering room size, ceiling height, sun exposure, and equipment inside. General rule: 400–600 BTU per square meter.

Can air conditioners be used for heating in winter?

• Yes, inverter air conditioners can both cool and heat, making them efficient for winter use.

What is the difference between inverter and regular air conditioners?

• Inverter models save energy, maintain stable temperature, and work quietly. Regular ones turn on/off frequently, consuming more energy.

How often should I clean the air conditioner?

• Filters should be cleaned at least once a month. Annual full service and professional cleaning of indoor/outdoor units are recommended.

What causes an air conditioner to malfunction?

• Issues may be due to dirty filters, low refrigerant gas, electronic board failure, or sensor problems. A specialist should be consulted in such cases.