AC gas does not run out on its own if your unit needs a refill, there is a leak somewhere in the system. Refilling without finding and fixing that leak first means the new gas escapes just as the old gas did, often within weeks. GharFix technicians run a full leak detection before every gas refill, recharge to manufacturer specification by weight not estimate and cover DHA, Bahria Town, Gulberg, Johar Town, and all major Lahore areas.
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R22 is the refrigerant used in most older non-inverter split and window ACs still running across Lahore especially units installed before 2015. R22 is being phased out globally due to its ozone depletion impact, which means supply is tightening and prices are rising year on year. If your AC runs on R22 and the leak is significant, a system upgrade conversation is worth having.
R410A is the standard refrigerant for non-inverter and early-generation inverter ACs sold in Pakistan between 2012 and 2020. It operates at higher pressure than R22 and has zero ozone depletion potential. Most mid-range Gree, Haier, and Dawlance units in Lahore homes run on R410A. It cannot be mixed with R22 systems must be fully vacuumed before refilling.
R32 is the refrigerant used in most modern DC inverter ACs sold in Pakistan from 2020 onwards including newer Gree, Haier, and Daikin models. It has a lower global warming potential than R410A and is more energy efficient per unit. R32 is mildly flammable, which means proper handling and leak detection before refilling.
R407C is used in some commercial AC systems and older imported units. It is a blended refrigerant meaning it cannot be topped up partially. If a system running R407C has a leak, the remaining gas must be fully recovered before recharging with a fresh cylinder. Less common in residential Lahore homes but present in commercial ac installations.
Before any gas is added to any system, our technician pressurizes the refrigerant circuit and checks all joints, coil connections, and the ac service valve for leak points. Refilling a leaking system without this step wastes money and damages the compressor over repeated low-gas cycles.
After a leak repair, the refrigerant circuit must be vacuumed removing air and moisture from the lines before new gas is introduced. Skipping this step causes moisture contamination inside the system, which degrades refrigerant performance and corrodes internal components over time.
Because AC gas loss is always caused by a leak, the signs appear gradually not overnight. These are the patterns our technicians see most often in Lahore homes during summer call-outs.
When refrigerant drops below the level needed to absorb heat from indoor air, the AC runs but cannot transfer that heat to the outdoor unit. The unit blows air but the room temperature barely changes. This is the most common symptom of low gas in a Lahore home during peak summer months.
When refrigerant is low, the evaporator coil gets too cold and moisture in the air freezes on contact with it. You may notice ice on the indoor unit itself or on the copper pipe connecting the indoor and outdoor units. Running the AC in this state accelerates compressor wear switch it off and call a technician.
The compressor is working you can hear the outdoor unit running but the air from the indoor unit is room temperature or slightly below. This pattern almost always points to refrigerant below the minimum level needed for the refrigeration cycle to function.
A unit that used to cool a room in 15 minutes now takes 45 minutes or never quite gets there. Gradual cooling decline over a single season often indicates a slow refrigerant leak that has been losing gas incrementally. A pressure test confirms it in minutes.
Refrigerant escaping through a small crack or loose joint produces a faint hissing sound near the indoor unit or along the copper line. A bubbling sound from the refrigerant line itself indicates gas and liquid mixing at a low-charge point. Both warrant an immediate inspection not just a refill.
Gas refill pricing in Lahore varies based on three factors: the refrigerant type your AC uses, the capacity of the unit, and whether a leak repair is needed before the refill. GharFix confirms the full cost after diagnosis before any gas is added.
R22 is the most expensive refrigerant per kilogram in Pakistan currently, due to its global phase-out and shrinking supply. Older 1 ton and 1.5 ton non-inverter ACs typically require 1 to 1.5 kg for a full recharge. Pricing confirmed after capacity check and leak assessment.
R410A is more widely available and moderately priced. Most residential split ACs in Lahore running R410A need between 800g and 1.2 kg for a full recharge depending on unit capacity and line length. This is the most common gas refill job across DHA, Gulberg, and Bahria Town homes.
R32 is used in most inverter ACs sold in Pakistan from 2020 onwards. It requires slightly less refrigerant by weight than R410A for the same cooling capacity, but handling requires specific safety precautions due to its mild flammability. Pricing is similar to R410A but confirmed per unit model.
If a leak is found before refilling and it almost always is the repair cost depends on where the leak is: a joint, a coil, or a service valve. Simple joint re-sealing is a minor addition to the job. A coil replacement is a separate, larger ac repair quoted independently. Gas is only added after the leak is fixed.
A gas refill is one of the most straightforward jobs among our AC services in Lahore on the surface, and one of the most commonly done wrong in the city. Here is what separates a correct refill from one that brings you back to the same problem in six weeks.
AC refrigerant does not deplete through normal use. If gas is low, there is a leak. Refilling without locating and repairing that leak first is the most common reason Lahore AC owners end up paying for multiple refills in a single season. GharFix finds the leak before touching the gas cylinder.
Refrigerant must be charged to a specific weight per the manufacturer's specification for the unit's capacity. Charging by feel or stopping at a pressure gauge reading without a scale introduces under or overcharge both of which damage the compressor over time. GharFix technicians use calibrated digital scales for every recharge.
After any leak repair or full gas recovery, the refrigerant circuit is vacuumed before recharging. This removes air and moisture contamination. Many Lahore technicians skip this step to save time it costs the customer in reduced system efficiency and component corrosion within a year.
If the same cooling issue returns within 30 days of a GharFix gas refill, we return and recheck the system at no additional charge. If a leak was repaired and gas recharged, our work covers leak repaired. If a new leak point has developed separately, we identify it and quote transparently.
Call or WhatsApp with your AC brand, model, and what the unit is doing. Same-day slots in most Lahore areas gas refill jobs are typically 1 to 2 hours.
Technician pressurizes the refrigerant circuit and checks all connection points for leaks before opening the gas cylinder. If a leak is found, it is repaired before any gas is added.
After any repair, the refrigerant lines are vacuumed to remove air and moisture before recharging. For systems without a recent repair, vacuum is still run if the system has been open.
Refrigerant added to manufacturer specification using a calibrated digital scale. System run under load, cooling temperature measured, and your 30-day service warranty confirmed.
GharFix provides professional AC gas refilling R22, R410A, and R32 with full leak detection across Lahore’s major residential zones. Our teams cover
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AC gas refill cost in Lahore depends on the refrigerant type and unit capacity. R22 refills start from PKR 3000, R410A from PKR 4000, and R32 from PKR 5000 per job. If a leak is found and repaired before refilling, that is quoted separately. GharFix confirms the full cost after on-site diagnosis before any gas is added.
AC refrigerant does not deplete through normal use it operates in a closed loop. If your unit needs a refill every season, there is a leak that was never properly fixed. Topping up gas without leak detection and repair is the most common mistake. GharFix locates the leak source, repairs it, and then recharges stopping the cycle of repeated refills.
R22 is used in older non-inverter ACs and is being globally phased out prices are rising as supply decreases. R410A is the standard for most residential ACs sold between 2012 and 2020 in Pakistan. R32 is used in modern inverter ACs from 2020 onwards it is more energy efficient and has a lower environmental impact but requires careful handling due to mild flammability. They are not interchangeable.
No. Using a substitute refrigerant in a system designed for a specific gas type causes pressure imbalances that damage the compressor and void any remaining manufacturer warranty. R22, R410A, and R32 operate at different pressures and cannot be mixed or substituted. If you are unsure which gas your AC uses, GharFix confirms this from the unit's data plate before any refill.
Running an AC on low refrigerant is damaging to the compressor. When refrigerant is below the correct level, the compressor works harder, runs hotter, and builds up internal pressure in ways it was not designed for. Over weeks, this causes compressor wear that leads to a full failure a far more expensive repair than a timely gas refill and leak fix.
A standard gas refill job including leak detection, vacuum, and recharge takes between 1 and 2 hours depending on the unit and whether a leak repair is needed. If a significant leak is found that requires component replacement, the job may extend to 2 to 3 hours or require a follow-up visit. Same-day completion is the standard for most Lahore area jobs.
GharFix is Lahore’s premier provider of professional home maintenance and home services, delivering 24/7 expert care. We specialize in rapid AC repair, background-verified electrician work, professional plumbing, and high-yielding solar solutions across DHA, Bahria, and Gulberg.
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