Cost of filling gas in refrigerator, approx. 1500 to 3000 gas filling price vary to the refrigerator model or depending to the storage capacity. if you have single door refrigerator then gas filling price are come Rs.1500 including leak repair and also 90 days repair warranty.
if we talk about double door refrigerator, then refrigerator gas filling charges are Rs 1800 and Leak repair and warranty rules apply to this as well.
But if you have French door and side-by-side refrigerator, then the price of filling gas may increase, it can be a bit expensive, if we compare single door and double door refrigerator gas filling.