The payment policy for AC services, including whether payment is required in advance, can vary depending on the company or service provider you choose. While I can provide you with some general information, it's important to note that specific payment policies may differ among different companies. It's always recommended to review the payment policy of the specific company you plan to engage with.

In some cases, AC service providers may require payment in advance, especially for certain types of services or for new customers. This is done to secure the appointment and ensure that the customer is committed to the service.

Here are some possible scenarios related to payment for AC services:

1. Upfront Payment: Some companies may require full or partial payment before they schedule an appointment for AC services. This can apply to both one-time repairs or regular maintenance contracts.

2. Deposit: Instead of requiring full payment in advance, a company may request a deposit to secure the service appointment. The deposit amount may be a percentage of the total service cost or a fixed amount.

3. Payment upon Completion: Other companies may have a policy of collecting payment only after the AC service is completed. This is more common for smaller repairs or maintenance tasks.

4. Payment Terms: The payment policy may specify the accepted forms of payment, such as cash, credit/debit cards, or online payment methods. It may also outline any specific payment deadlines or late payment charges if applicable.

It's essential to carefully review the payment policy provided by the AC service company you plan to engage with. This will help you understand their expectations regarding payment and ensure that you are prepared to fulfill their requirements. If you have any questions or concerns about the payment policy, it's best to contact the company directly to seek clarification.