Yes, there is a difference in cost between servicing different types of air conditioning units. For example, a standard wall-mounted split unit is generally less expensive to service compared to a more complex system like a multi-split or ducted aircon system. The aircon servicing price for larger units, such as central air conditioning systems, is higher due to the increased number of components and the complexity of the installation. Additionally, servicing specialised units, such as ceiling cassette or window units, may also incur different costs depending on their accessibility and specific maintenance needs.