If your air conditioner is working properly but isn't providing enough cooling, it's possible that gas is leaking and you might consider an air conditioner gas top-up. SG CITY AIRCON make certain that you get the best top up service at the greatest price. 

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Based on the brand & model of aircon you are using, top up the gas using the R22 or R410 refrigerant gas. The aircon gas refill price also depend on the form and volume used.