How Often Should You Service Your AC in Dhaka? A No-Nonsense Maintenance Schedule
Most people in Dhaka don’t think about their AC until it stops working on a 40-degree afternoon. Then they panic-call a technician, pay emergency rates, and wonder why the repair bill is so high. The truth is, almost all expensive AC breakdowns we see at Mohammadi Engineering Ltd. could have been prevented with regular servicing at the right intervals.
But how often is “regular”? The answer isn’t the same for everyone. It depends on where you live in Dhaka, how much you use the AC, and what kind of environment it operates in. Let me break this down based on real data from servicing thousands of ACs across the city since 2020.
What You’ll Learn
- Why Dhaka’s climate destroys ACs faster than you think
- Exact servicing schedule based on your usage pattern
- Seasonal maintenance calendar for Dhaka
- What a proper AC service actually includes
- Signs your AC needs immediate attention
- What regular servicing actually saves you
Why Dhaka is Harder on ACs Than Most Cities
Dhaka runs ACs longer than most cities in the world. From March through October, the AC in a typical Dhaka home runs 10-16 hours daily. That’s roughly 2,400 to 3,800 hours of operation per year. For comparison, an AC in Tokyo or Seoul might run 800-1,200 hours annually.
More running hours means faster wear on every component — compressor bearings, fan motors, capacitors, and electrical contacts. Combine that with Dhaka’s air quality (consistently among the worst globally), and you get filters clogging in weeks instead of months, coils getting coated in fine particulate matter, and drainage systems choking with dust-sludge.
High humidity adds another problem: moisture condenses on the evaporator coil and drains out through a small pipe. When dust mixes with this water, it forms a thick paste that blocks the drain, causing water leakage — one of the most common AC repair complaints we get.
The Right Servicing Frequency for Dhaka
| Usage Type | Recommended Frequency | Example |
|---|---|---|
| Heavy use (12-16 hrs/day, Mar-Oct) | Every 2 months | Home AC in bedroom, running all night + daytime |
| Moderate use (6-12 hrs/day) | Every 3 months | Office AC during work hours |
| Light use (2-6 hrs/day) | Every 4 months | Guest room AC, occasional use |
| Very light (less than 2 hrs/day) | Twice a year | Storage room, rarely used space |
| Commercial / server rooms | Monthly | Shops, restaurants, IT rooms |
For the average Dhaka household where the bedroom AC runs overnight every day from March to November, every 2 months is the sweet spot. That means roughly 4-5 services per year. Skipping even one service during peak summer (May-July) often leads to a breakdown right when you need the AC most.
Seasonal Maintenance Calendar for Dhaka
🟢 February-March (Pre-Summer)
- Full service before summer starts
- Check gas pressure
- Clean both coils thoroughly
- Test compressor performance
- Clear drain pipe
- Check remote and thermostat
🔴 May-July (Peak Summer)
- Service every 6-8 weeks
- Focus on filter cleaning
- Monitor gas levels
- Check outdoor unit airflow
- Inspect electrical connections
- Watch for ice formation
🔵 July-September (Monsoon)
- Clean drain pipe thoroughly
- Check for water leakage
- Clean mold from indoor unit
- Inspect outdoor unit for rust
- Verify proper drainage slope
- Check insulation on pipes
🟡 November-January (Winter)
- Run AC once a week for 30 min
- One service before storing
- Cover outdoor unit if possible
- Clean and dry indoor unit
- Check for pest nests in outdoor unit
- Inspect all rubber seals
What a Proper AC Service Actually Includes
When we do a professional AC servicing in Dhaka, it’s not just wiping the filter. Here’s what a thorough service covers — use this as a checklist to evaluate whether your current technician is cutting corners:
- Air filter — Remove, wash with water, dry completely, reinstall (or replace if damaged)
- Evaporator coil — Apply chemical cleaner, let it work, rinse with low-pressure water
- Condenser coil — Remove debris, apply coil cleaner, rinse (outdoor unit)
- Drain pipe — Blow compressed air or flush with water to clear blockages
- Drain tray — Clean the collection tray inside the indoor unit (mold grows here)
- Gas pressure — Connect manifold gauge, check both low and high side pressure
- Electrical connections — Tighten all terminal screws, check for discoloration
- Capacitor — Check microfarad reading with multimeter
- Fan motors — Check for bearing noise, verify RPM
- Remote and sensors — Test all functions, check temperature sensor reading
- Pipe insulation — Check the black rubber foam on copper pipes for gaps
- Overall performance — Measure inlet and outlet air temperature difference (should be 8-12°C)
A proper service takes 60-90 minutes. If someone finishes in 20 minutes, they’re not doing half of this list. At Mohammadi Engineering Ltd., our technicians carry a service checklist card and the customer can verify each item.
6 Warning Signs Your AC Needs Immediate Servicing
Don’t wait for your scheduled date if you notice any of these:
- Bad smell from the AC — Usually mold or bacteria growing on the evaporator coil or in the drain tray. Health hazard, especially for children and elderly.
- Water dripping from the indoor unit — Blocked drain pipe. Water damage to walls and furniture follows quickly.
- Unusual noise (grinding, squealing, rattling) — Worn bearings, loose parts, or debris in the fan. Gets worse fast.
- Taking longer to cool — Could be dirty coils, low gas, or early compressor wear. The longer you wait, the worse it gets.
- Ice forming on pipes or indoor unit — Low gas or airflow restriction. Running with ice damages the compressor.
- Higher electricity bills — A dirty AC uses 20-40% more power than a clean one to produce the same cooling.
What Regular Servicing Actually Saves You (Real Numbers)
I tracked costs for 50 of our regular service customers versus 50 customers who only called when something broke. Over two years, the numbers were clear:
| Metric | Regular Servicing (4x/year) | Breakdown-Only Approach |
|---|---|---|
| Average annual AC cost | ৳8,000 – 12,000 | ৳14,000 – 28,000 |
| Breakdowns per year | 0 – 1 | 2 – 4 |
| Compressor replacements (2 years) | 0 out of 50 | 4 out of 50 |
| Average AC lifespan | 8-12 years | 5-7 years |
| Electricity cost difference | Baseline | +20-35% higher bills |
Regular servicing doesn’t cost money — it saves money. The customers who serviced their ACs 4 times a year spent roughly half as much total (including service fees) compared to those who only called for repairs. And none of them had to replace a compressor, which alone costs ৳15,000-25,000.
Difference Between Servicing Types
Not all AC services are the same. Here’s what to expect from different levels:
| Service Type | What’s Done | When to Choose | Cost Range (৳) |
|---|---|---|---|
| Basic cleaning | Filter wash, body wipe, quick spray | Between full services | 500 – 1,000 |
| Standard service | Filter + coil cleaning + drain + gas check | Regular maintenance | 1,500 – 2,500 |
| Deep service | Full chemical clean + all checks + pipe insulation | Pre-summer or after long gap | 2,500 – 4,000 |
| AC + duct cleaning | Deep service + ductwork cleaning | Central HVAC systems | 5,000 – 12,000 |
Can You Service Your AC Yourself?
You can handle the filter — wash it every 2-3 weeks during summer. Beyond that, I don’t recommend DIY AC servicing for several reasons:
- Chemical coil cleaners need proper dilution and application technique — too strong and you damage the aluminum fins, too weak and it doesn’t clean
- Checking gas pressure requires a manifold gauge set that costs ৳8,000-15,000 — not worth buying for home use
- Electrical checks need a multimeter and knowledge of what readings are normal for your specific AC model
- Mishandling the indoor unit can crack the plastic casing or damage the swing motor
- If you break something during DIY, warranty usually won’t cover it
The filter alone, cleaned regularly, will prevent 60-70% of common problems. For everything else, book a professional AC servicing in Dhaka and make sure they follow the full checklist I mentioned above.
Book Your AC Service Today
Mohammadi Engineering Ltd. serves all Dhaka areas 24/7. Full checklist service with 30-day warranty on every visit.
Call: 01859-976686Frequently Asked Questions
In Dhaka, clean your AC filter every 2-3 weeks during summer months (March-October). During dry months when dust is heavier, you may need to clean it weekly. In winter when AC use drops, once a month is sufficient. A clogged filter is the single most common cause of AC problems in Dhaka.
Standard AC servicing in Dhaka costs ৳1,500-2,500 for a split AC. Deep cleaning with chemical treatment costs ৳2,500-4,000. These prices are for residential split ACs (1-2 ton). Commercial systems and central HVAC cost more. At Mohammadi Engineering Ltd., we provide upfront pricing before starting work.
For heavy usage in Dhaka (12-16 hours daily during summer), yes — every 2 months is necessary. This isn’t overkill; it’s what the operating conditions demand. If you use your AC 6-8 hours a day, every 3 months works. The key factor is total running hours, not calendar time.
Yes, by 15-30%. A dirty AC has to work significantly harder to produce the same cooling. A clogged filter alone increases power consumption by 5-15%. Dirty coils add another 10-20%. With Dhaka’s already high electricity costs, the savings from regular servicing easily cover the service cost itself.
Yes, run it for 30 minutes once a week. This keeps the compressor oil circulating, prevents rubber seals from drying out, and stops mold from forming in the indoor unit. Think of it like starting a car that sits unused — components need periodic operation to stay healthy.
The AC will progressively cool less, use more electricity, make more noise, and eventually break down — usually the compressor, which is the most expensive part. An unserviced AC in Dhaka typically lasts 4-6 years versus 8-12 years with regular maintenance. The total cost of repairs and early replacement far exceeds what servicing would have cost.