During the summer, it's common to feel that your AC isn't cooling the room as quickly as it used to. Before you think about replacing the unit or booking a repair, a few simple checks and small changes can often make a noticeable difference in its cooling performance and energy use.
In this article, you'll learn how to improve AC cooling efficiency. You'll also understand what affects your AC's performance and when professional help may be needed.
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What Affects Your AC's Cooling Performance?
Before trying to improve AC cooling efficiency, it's important to know what could be affecting your AC. Here are the common reasons:
Your AC Filter Is Covered With Dust
The air filter traps dust and other particles before they enter the AC. Over time, it becomes clogged, restricting airflow and making it harder for cool air to circulate around the room. As a result, the AC may run for longer without delivering the level of cooling you expect.
The Outdoor Unit Can't Release Heat Properly
Your AC's outdoor unit needs enough open space to release heat efficiently. If it's surrounded by leaves, dust, or other obstructions, the trapped heat can reduce the system's cooling performance and make it work harder than necessary.
Doors or Windows Are Letting Cool Air Escape
Even a well-functioning AC can struggle if cool air keeps escaping from the room. Frequently opening doors, leaving windows slightly open, or gaps around them can make the AC run longer because it has to cool warm air entering from outside.
The Thermostat Settings Aren't Right
Sometimes the issue isn't with the AC itself but with the settings. Using the wrong cooling mode, setting the temperature too high, or accidentally switching to fan mode can make the room feel less cool even though the AC is running.
The Indoor Unit Needs Cleaning
Dust can collect on the indoor unit's coils and vents over time, reducing airflow and affecting cooling performance. When this happens, the AC may take longer to cool the room and may not distribute cool air evenly.
The Room Is Getting Too Much Heat
Direct sunlight through windows, cooking, or several electrical appliances running at the same time can make a room heat up faster. This increases the cooling load on the AC, making it take longer to reach the desired temperature.
Your AC Hasn't Been Serviced for a Long Time
Regular servicing keeps different parts of the AC clean and working properly. When maintenance is skipped for months or years, dust buildup, worn components, or minor issues can gradually reduce cooling efficiency without causing an immediate breakdown.
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How to Improve AC Cooling Efficiency at Home?
Once you've identified what might be reducing your AC's cooling performance, the next step is to fix those issues. Here are some simple ways to improve AC cooling efficiency at home:
Clean the Air Filter Every Few Weeks
Remove the filter and clean it according to the manufacturer's instructions. If it's a disposable filter, replace it when needed. During the summer, checking the filter once every few weeks can make a noticeable difference.
Keep the Outdoor Unit Free From Obstructions
Check that the outdoor unit has enough open space around it. Remove leaves, dust, or anything else that may have collected nearby, and avoid placing furniture, boxes, or plants too close to it.
Set the Temperature Between 24°C and 26°C
Instead of lowering the temperature as much as possible, choose a comfortable setting between 24°C and 26°C. This is usually enough to keep the room cool while allowing the AC to operate efficiently.
Keep the Room Closed While the AC Is Running
Close doors and windows before switching on the AC. If the room gets direct sunlight, keep the curtains or blinds closed during the hottest part of the day to reduce the amount of heat entering the room.
Keep the Airflow Around the Indoor Unit Clear
Avoid placing furniture, curtains, or large decorative items directly in front of the indoor unit. Leave enough open space so cool air can circulate freely throughout the room.
Use a Ceiling Fan to Circulate Cool Air
Switch on the ceiling fan while using the AC to distribute cool air more evenly across the room. This can make the room feel comfortable without constantly adjusting the thermostat.
Also Read: AC Cooling One Room But Not Another: What's Wrong?
Common Mistakes That Reduce AC Cooling
Along with regular maintenance and proper use, avoiding these common mistakes can help your AC cool more efficiently. Here are some of the most common ones:
Switching the AC On and Off Too Frequently
Many people turn the AC off as soon as the room feels cool and switch it back on when it starts getting warm again. This repeated cycling makes the system work harder each time it restarts. If you're staying in the room, it's usually better to let the AC maintain the set temperature instead of turning it on and off repeatedly.
Setting the Temperature Extremely Low
It's easy to assume that setting the AC to 16°C or 18°C will cool the room faster. In reality, the AC cools at the same rate regardless of the temperature you select. Choosing an extremely low setting only makes the unit run longer after the room has cooled, leading to unnecessary electricity use.
Leaving Heat-Generating Appliances Running
Appliances like ovens, irons, kettles, and even desktop computers can add extra heat to the room. Using several of them while the AC is running increases the cooling load, making it take longer for the room to feel comfortable.
Ignoring Unusual Changes in Cooling Performance
If your AC suddenly takes longer to cool, starts making unusual noises, or begins blowing less cool air than before, don't assume it's a temporary issue. Continuing to use it without checking the problem can put additional strain on the system and may lead to a more expensive repair later.
Cooling Rooms That Aren't Being Used
It's common to leave the AC running while moving between rooms or after leaving the room for an extended period. Turning the AC off when the room is no longer occupied can reduce unnecessary energy use, especially if you'll be away for a while.
Skipping a Check Before Summer Starts
Many people switch on their AC for the first time after months of not using it and expect it to perform as usual. A quick inspection, filter cleaning, and test run before the hottest part of the season can help you spot small issues before they affect cooling when you need it most.
Blocking Airflow Without Realising It
Drying clothes near the indoor unit, placing tall furniture directly beneath it, or hanging thick curtains across the airflow can reduce how well cool air spreads through the room. Keeping the area around the indoor unit clear allows air to circulate more evenly.
Also Read: How to Clean Your AC Filter at Home (Step-by-Step)
Signs Your AC Needs Professional Attention
Sometimes, simple maintenance and a few adjustments aren't enough. If your AC is still not cooling properly, it's best to have it checked by a professional. Here are some signs to look out for:
Water Is Leaking From the Indoor Unit
A few drops of water during very humid weather may not be unusual, but a steady leak from the indoor unit is a sign that something needs attention. It could be a blocked drain pipe, a damaged drain pan, or another issue that requires proper inspection.
The AC Keeps Turning Off Before the Room Cools
If your AC starts normally but shuts off after only a few minutes, even though the room is still warm, the issue is unlikely to resolve on its own. This type of repeated short cycling should be checked before it puts additional stress on the system.
There's a Burning or Musty Smell
A musty smell may indicate mould inside the unit, while a burning smell could point to an electrical problem. If either smell continues after restarting the AC, switch it off and arrange a professional inspection instead of continuing to use it.
Ice Forms on the Indoor or Outdoor Unit
Ice building up on the coils or refrigerant pipes is never normal during regular operation. Running the AC in this condition can affect its performance and may cause further damage, so it's best to have the unit checked before using it again.
The Electricity Bill Has Increased Without Any Change in Usage
If your AC usage has remained about the same but your electricity bill has increased noticeably, the system may no longer be operating efficiently. A technician can identify whether worn components or other faults are causing the higher power consumption.
The Remote Works, but the AC Doesn't Respond Properly
If changing the temperature or mode on the remote has little or no effect, the problem may be with the indoor unit, sensors, or electronic controls rather than the remote itself. A professional inspection can help identify the exact cause.
The Circuit Breaker Trips Repeatedly
If the AC causes the circuit breaker to trip every time or every few uses, don't keep resetting it and switching the unit back on. This could indicate an electrical fault that should be inspected by a qualified technician for safety.
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Why Choose Eazzy for AC Repair Services?
If you're unable to improve AC cooling efficiency even after trying the steps in this guide, it's time to have your AC inspected by a professional. Here's why many homeowners choose Eazzy for AC repair services:
Book a Repair Without Leaving Home
There's no need to search for nearby AC repair shops or arrange transportation for your unit. Simply book a service through the Eazzy app, and a trained service professional will visit your location at the scheduled time.
Upfront Pricing Before the Service
With Eazzy, you can view the service charges before confirming your booking. This gives you a clear idea of the expected cost before any repair work begins.
Experienced Technicians for Different AC Brands
Eazzy connects you with trained technicians who can diagnose and repair a wide range of AC issues across different brands and models. The problem is inspected first, and the appropriate repair is carried out based on the condition of your AC.
Track Your Service in Real Time
From the moment you place your request until the repair is completed, you can track your service through the app. OTP-based job verification also helps ensure that the assigned service is completed as scheduled.
Support for a Wide Range of Home Services
Need help with another appliance or household repair? Along with AC repair, Eazzy lets you book refrigerator repair, washing machine repair, microwave repair, plumbing, electrical work, home cleaning, pest control, and other home services from a single platform.
Service Warranty on Applicable Repairs
Selected repair services include a service warranty after the work is completed. If your AC repair is covered under the applicable warranty terms, you can request support during the warranty period.
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Final Thoughts
To sum up, improving AC cooling efficiency often comes down to a few simple habits, such as using the right temperature settings, avoiding common mistakes, and keeping the unit in good condition. These small changes can make your room feel more comfortable while reducing unnecessary strain on the AC.
However, if your AC still isn't cooling properly after trying these steps, the issue may require professional attention. In that case, you can book an AC repair service through Eazzy and have your unit inspected by a trained technician.
