# Five common air conditioner mistakes that significantly increase electricity bills during summer

> Using an air conditioner during summer without proper maintenance and correct settings can lead to surprisingly high electricity bills. Simple adjustments like setting the right temperature, cleaning filters regularly, and avoiding open windows can save substantial power.

**Type:** article · **Category:** Lifestyle · **Published:** 2026-08-29 · **Source:** TrendKia
**Canonical:** https://trendkia.com/en/lifestyle/esi-chalate-samaya-ki-jane-vali-ye-pancha-bari-bhulen-teji-se-barhati-hain-bijali-ka-bila-24282 · **Language:** English
**Tags:** AC electricity bill, summer cooling tips, BEE star rating, AC servicing, energy saving

Air conditioners provide much-needed relief during peak summer months, but running them for extended periods can cause power bills to skyrocket. Interestingly, the primary reason for a high electricity bill is often not just the duration of AC usage, but rather the incorrect way it is operated. Minor oversights like keeping room temperatures extremely low, neglecting filter maintenance, or leaving doors and windows open put an unnecessary burden on the cooling unit. If you want to keep electricity consumption under control, avoiding these common mistakes is essential.

## Setting the temperature excessively low
Many people set their air conditioner to 16 or 18 degrees Celsius in the hope of cooling the room faster. While this does not necessarily cool the space any quicker, it forces the compressor to work continuously for a much longer period. This ultimately drives up electricity consumption significantly. It is generally better to select a comfortable and moderate temperature for the room. In India, the Bureau of Energy Efficiency has actively promoted 24 degrees Celsius as an ideal default setting for air conditioners.

## Leaving doors and windows open
If doors are opened frequently while the AC is running or if hot outside air enters through unsealed windows, maintaining a cool indoor environment becomes very difficult. Under such conditions, the cooling unit has to work much harder to achieve the desired effect. Therefore, it is important to keep all doors and windows securely closed after switching on the AC. If direct sunlight enters the room, utilizing curtains or blinds can also help block heat gain.

## Neglecting regular cleaning of AC filters
The air filter plays a crucial role in trapping dust, dirt, and allergens. Failing to clean it over a long period leads to dust accumulation, which restricts proper airflow. Consequently, the air conditioner has to struggle harder to cool the room. Regular cleaning of the filter, in accordance with the manufacturer guidelines, is vital. If the filter is severely dirty or damaged, getting it replaced is the best option.

## Ignoring routine AC servicing
Merely cleaning the filter is not enough to keep the appliance running smoothly. Periodic inspection of the cooling coils, drainage system, and other internal components of the AC is equally important. If the air conditioner is failing to cool properly, emitting unusual noises, or leaking water, ignoring these signs and continuing to operate it is unwise. Timely servicing helps maintain the machine efficiency and extends its operational life.

## Choosing an incorrect AC capacity for the room
If the cooling capacity of the air conditioner is inadequate relative to the size of the room, the unit has to run for prolonged periods to reach the desired temperature. At the same time, purchasing an AC with an excessively high capacity for a small space is not always the best choice either. When buying a new air conditioner, factors such as room dimensions, exposure to sunlight, ceiling height, the number of occupants, and the overall usage of the space must be carefully evaluated.

## Key practices to save electricity
Keeping AC power consumption low requires a combination of correct temperature selection, proper room insulation, regular filter maintenance, and periodic professional servicing. Furthermore, if you are planning to purchase a new air conditioner, always check its BEE star rating and energy efficiency parameters to ensure long-term savings on your utility bills.

## What this means for you
Correcting these air conditioner usage habits can lead to a noticeable drop in your monthly electricity bills while extending the lifespan of the appliance.

- **Across India:** Reduced household power consumption helps alleviate peak load pressure on the national power grid and minimizes outage risks during summer.
- **In daily life:** Setting the temperature to 24 degrees Celsius and maintaining clean filters results in significant monetary savings on monthly utility expenses.

## Questions & Answers

### 1. What is considered the ideal temperature setting for an air conditioner?
The Bureau of Energy Efficiency recommends 24 degrees Celsius as an appropriate default setting for air conditioners.

### 2. What happens if doors and windows are left open while the AC is running?
Open doors and windows let warm outside air in, making it difficult to maintain cooling and forcing the AC to work harder.

### 3. Why is regular cleaning of the AC filter important?
Neglecting filter cleaning blocks airflow due to dust accumulation, forcing the air conditioner to consume more energy to cool the room.

### 4. What factors should be considered when purchasing a new air conditioner?
When buying a new AC, factors like room size, sunlight exposure, ceiling height, occupant count, and the BEE star rating should be evaluated.

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