The quote you have been given of $700 for 3 kg of gas seems high. It is possible that the company you have contacted is charging a premium for their services, or that they are using a more expensive type of gas. If you are unsure about the cost of the re-gas service, it is always a good idea to get quotes from multiple companies before making a decision.
Here are some tips for saving money on your split system air conditioner re-gas service:
* Get multiple quotes from different companies before making a decision.
* Ask about any discounts or promotions that may be available.
* Consider using a company that offers a warranty on their services.
* Schedule your re-gas service during the off-season when prices are typically lower.
By following these tips, you can save money on your split system air conditioner re-gas service and ensure that your air conditioner is running efficiently all summer long.