How to Know Your Car AC Needs a Check-Up: Best Car AC Service in Dhaka

Introduction

It’s never fun when your car’s AC starts acting up—especially in Dhaka’s heat. You switch it on, expecting cool relief, but all you get is warm air or, worse, nothing at all. Add in a strange smell or weak airflow, and suddenly your ride becomes uncomfortable and frustrating.

These are clear signs that your system might need a car AC check up. Just like any other part of your vehicle, your air conditioning system needs regular attention to keep it working properly—especially in a city where the temperature and humidity hit hard almost year-round.

At Biswas Automobiles, we’ve helped hundreds of car owners stay cool and comfortable by offering reliable and thorough car AC service in Dhaka. Whether it’s a minor gas refill, a filter clean-up, or a full system inspection, we make sure you’re breathing fresh, cool air every time you drive.

If your AC isn’t performing like it used to, it’s time to get it checked—before the problem grows bigger and more expensive.

A mechanic servicing a car's air conditioning unit.

Common Signs Your Car AC Needs a Check-Up

If your car’s AC isn’t working like it used to, it’s probably trying to tell you something. Catching these signs early can save you from bigger repairs down the line. Here’s how to know it’s time for a car AC check up and what to look out for.

AC Blowing Hot or Warm Air

When the AC in car is blowing hot, even on the coldest setting, it usually means there’s a problem with cooling. The most common cause is low refrigerant due to a leak. It could also be a faulty compressor or clogged condenser that’s blocking airflow.

If your car air conditioner is not blowing cold air, don’t ignore it. These issues won’t fix themselves and could damage other components if left untreated. A proper AC inspection will pinpoint the cause quickly.

Weak or No Airflow from the Vents

If your vents are barely pushing air, it could be due to clogged filters, a worn-out blower motor, or blocked air ducts. In some cases, moisture and dirt buildup inside the system cause airflow to weaken over time.

Using a car AC vent cleaner or getting a full car AC cleaner service can help restore airflow. We recommend checking this if you notice a sudden drop in cooling power.

Unusual Smells When AC Is On

A musty or sour smell coming from your vents is often a sign of mold or bacteria buildup inside the AC system. This usually happens in the evaporator or air ducts, especially if the system has trapped moisture inside.

Ignoring this smell can lead to health concerns, especially for kids and passengers with allergies. A system flush and fresh liquid for car air conditioner can solve this quickly.

Strange Noises from AC Unit

Clicking, rattling, or grinding sounds when the AC is running often point to mechanical problems. It could be a loose belt, damaged compressor clutch, or a failing fan motor inside the unit.

Noise might seem like a small issue, but it often leads to full component failure. Our AC specialists can detect and fix these problems before they get worse.

Visible Leaks or Damp Spots

If you spot wet patches under the car or around the dashboard, your AC system might be leaking. This could be low refrigerant car AC fluid or water from clogged drain lines.

Leaking refrigerant means your system needs an AC system recharge and likely some sealing work. Bring it in right away before the gas runs too low and damages the compressor.

Compressor Not Clicking On

The compressor clutch should make a soft click when the AC starts. If you don’t hear it, the clutch might be stuck or the system pressure could be too low due to a refrigerant leak.

This often means you’re running very low on freon for car, which can stop your AC from working entirely. A system test will confirm the exact issue.

AC Takes Too Long to Cool

If your AC feels like it’s taking forever to cool the cabin, there may be a performance drop. This could be caused by low refrigerant, a blocked condenser, or just age-related wear.

In most cases, we run an AC test car check and top up with car AC cooling liquid to bring the system back to full power. Don’t wait until it stops cooling completely.

What Causes These Issues?

Your car’s AC system is designed as a closed loop, which means the refrigerant for car should circulate continuously without escaping. If your system is low on refrigerant, it almost always means there’s a leak. Simply topping it off without finding the leak will only give you temporary relief and can even damage the system over time.

One of the biggest reasons for AC problems is aging components. Over the years, seals, hoses, and the compressor can wear out and start leaking. This is especially true for vehicles that haven’t had a car AC check up in a while.

Another factor is the dust and extreme heat in Dhaka. These conditions clog filters, block condensers, and increase the strain on the AC system. Without regular maintenance, your AC has to work harder, which leads to reduced cooling efficiency and more frequent repairs.

Finally, using the wrong refrigerant or poor-quality servicing can cause serious issues. People often ask, “How do I know if my car needs freon?” If your AC blows warm air or takes longer to cool, that’s a sign of low refrigerant or the wrong car AC cooling liquid being used. Always choose trusted technicians who use the correct refrigerant and proper service methods to keep your system healthy.

Most common causes of car AC problems:

Leaks in the refrigerant system
Worn-out or old components
Clogged filters and dirty vents
High heat and pollution in Dhaka
Poor-quality AC repairs or incorrect refrigerant

How Often Should You Recharge or Service Your Car AC?

In most cases, your car’s AC system shouldn’t need a recharge often—unless there’s a leak. Since the system is sealed, refrigerant doesn’t just "run out" over time. If it’s low, it means something is wrong and needs fixing—not just topping up.

So, if you’re wondering how often to recharge car AC, the answer is: only when necessary. That said, regular servicing helps catch issues before they become major problems. We recommend a full car AC check up at least once a year, especially in a city like Dhaka where heat and humidity are constant.

You should also get your AC checked before the summer or before long trips. It’s a smart way to avoid discomfort, costly repairs, and unexpected breakdowns.

Not sure how to service auto AC? We’ll handle everything—from checking refrigerant levels to cleaning filters and testing cooling power—so you stay comfortable on every drive.

Keeping your AC maintained is simple, smart, and saves money in the long run.

What Happens During a Car AC Check-Up?

Many car owners skip AC maintenance simply because they don’t know what it involves. At Biswas Automobiles, we make the process simple, honest, and effective. When you bring your vehicle in for a car AC service in Dhaka, here’s what you can expect:

First, we check your refrigerant levels to see if the system is running low on freon for car. If it is, that’s a sign of a leak or pressure issue. Our team then inspects for leaks in hoses, seals, and the evaporator. We never just top off the refrigerant without finding the cause—that leads to more damage later.

Next, we test the cooling performance inside the cabin. If your AC isn’t blowing cold enough, we’ll figure out why. Then we move on to cleaning the vents and cabin filter, which often hold dust, mold, and bacteria—especially in Dhaka’s dusty environment.

We also inspect the compressor and clutch operation to make sure everything is engaging as it should. If needed, we perform a full AC system recharge using the right tools and genuine cooling liquid for car air conditioner.

By the end of the check-up, you’ll know exactly what’s going on with your AC—and we’ll only recommend what your car actually needs. No guesswork. Just clean, cool air and smooth service from people you can trust.

Why Choose Biswas Automobiles for Car AC Service in Dhaka

When it comes to car AC service in Dhaka, you need more than just a gas refill. At Biswas Automobiles, we deliver complete AC care backed by experience, advanced tools, and real results.

Our team includes AC-certified technicians who know how to handle everything from small gas leaks to full system failures. We use German diagnostic tools for accurate pressure testing and leak detection—no guesswork, no unnecessary replacements.

We only use genuine refrigerant for car systems and approved cleaning agents that protect both your AC and your health. Whether it’s a clogged vent, a failing compressor, or low cooling, we handle it all under one roof.

Our AC restoration service goes beyond just cooling. We focus on airflow strength, cabin air quality, system noise, and efficiency—everything that makes a difference in real driving conditions. If you drive a hybrid or electric vehicle, don’t worry—we also specialize in hybrid vehicle AC service.

To make it even easier, we offer home pickup and delivery, 24/7 support, and same-day service options when available. This is why we’re trusted for both premium car repair service and luxury car servicing across Dhaka.

At Biswas Automobiles, we don’t just fix AC problems—we restore comfort. Your car’s cooling system is in expert hands here.

Book Your Car AC Check-Up Today

If your car’s AC isn’t keeping you cool, don’t wait for it to get worse. Schedule your car AC check up with Biswas Automobiles today and get expert service you can count on.

Call or WhatsApp us at +8801742700300 to book an appointment.

Our process is quick, transparent, and handled by trained professionals—no hidden costs, no unnecessary work.

We use genuine parts, accurate diagnostics, and proven methods to keep your AC running at its best.

We’ll keep your AC cool, clean, and working like new—all year round.

Book Your Appointment Now