Every summer, the same conversation happens in households across Vadodara.

The electricity bill arrives. Someone opens it. There’s a long pause. Then: “Kem etlu aavyu?” (Why is it so high?)

The AC gets the blame immediately – and honestly, it’s usually not wrong. Air conditioners are the single biggest electricity consumer in most Indian homes, especially in a city like Vadodara where summers start in March and don’t really let go until October. An AC running 8–10 hours a day for six months is going to show up on your bill.

But here’s what most people don’t know: a well-maintained AC running efficiently should not be shocking your electricity bill. If your bill has jumped significantly – or if it’s been creeping up year after year – something is making your AC work harder than it should. And that extra effort translates directly into extra units consumed and extra rupees on your bill.

Let’s get into exactly what causes it – and more importantly, what fixes it.

Reason 1: Your AC Filter Is Dirty 

This comes up again and again because it genuinely is the most common cause of both poor cooling and high electricity consumption – and yet it’s the one thing most people never check.

When the air filter is clogged with dust, your AC has to pull air through a blocked surface. It’s like trying to breathe through a thick cloth. The fan motor works harder, the system strains to maintain airflow, and the compressor runs longer to achieve the same cooling result. All of that extra effort means more electricity.

Studies have shown that a dirty air filter can increase AC energy consumption by 5–15% – sometimes more in dusty environments like Vadodara. In a city where the AC runs for months at a stretch and dust accumulates fast, a filter that’s cleaned only once a year is practically guaranteed to be costing you money.

The fix: Clean your AC filter every 2–3 weeks during peak summer. It takes 10 minutes, costs nothing, and makes a real difference on your bill.

Reason 2: Low Refrigerant Makes the AC Run Longer

When your AC is low on refrigerant (gas), it loses cooling efficiency. The room takes much longer to reach the set temperature – which means the compressor keeps running for extended periods trying to compensate.

A compressor running for 45 minutes to cool a room that should cool in 20 minutes is consuming more than double the electricity for that session. Do that across 10–12 hours a day, and the difference on your monthly bill is significant.

Low refrigerant almost always means there’s a leak somewhere in the system. Simply topping up the gas without finding and fixing the leak means the same problem comes back in a few weeks — and you’re paying for both the repeated gas refills and the ongoing inflated electricity bills.

The fix: If your AC is cooling slowly, running continuously, or you notice ice on the copper pipes, get a refrigerant check done. A proper top-up after fixing the leak restores efficiency immediately.

Reason 3: Dirty Coils — Indoor and Outdoor

Your AC has two sets of coils: the evaporator coil (inside the indoor unit, which absorbs heat from room air) and the condenser coil (in the outdoor unit, which releases that heat outside).

When either coil is coated with dust, grime, or mould, heat transfer becomes inefficient. The AC has to work significantly harder to absorb and release the same amount of heat — and that translates directly into higher power consumption.

In Vadodara, outdoor units get grimy fast — between the dust, pollution near industrial areas like Makarpura GIDC, and general urban air quality. An outdoor condenser covered in dirt is running at a fraction of its rated efficiency.

Indoor evaporator coils collect mould and dust over time, especially in humid conditions. A musty smell from your AC vents is often a sign of dirty or mouldy evaporator coils.

The fix: Annual deep cleaning of both coils — ideally before summer begins in March — restores heat transfer efficiency and visibly reduces electricity consumption. This is exactly what G-Aircon’s jet pump AC service covers.

Reason 4: The AC Is Running in a Poorly Sealed Room

Your AC is cooling the room. But if the room is leaking cooled air as fast as the AC produces it — through gaps under doors, unclosed windows, poorly fitted window frames, or thin walls with no insulation — the compressor never gets a chance to rest.

In inverter ACs, the compressor slows down once the room reaches the set temperature. In non-inverter (fixed-speed) ACs, the compressor cycles off and on. Either way, a well-cooled, sealed room uses significantly less electricity than one where cool air is constantly escaping.

Check your room for:

• Gaps under the door (a towel or door seal helps)
• Windows that don’t close fully
• Curtains or blinds — heavy curtains on west-facing windows massively reduce heat load, especially during Vadodara’s intense afternoon sun

The fix: Sealing the room better and using curtains costs almost nothing and can reduce the time your AC compressor runs by 20–30% per session.