Regular service is important to maintaining your system in the best condition and continuing your warranty coverage. While you could schedule the visits without a maintenance contract, the contract usually gives you a discount on the visits, so it makes more sense to purchase the maintenance contract.
The contract should specify the number of maintenance visits. Most include two, one for heating and one for air conditioning. Visits are best scheduled before the system switches over (early spring before A/C season and late fall before heating season).
The contract should list the various tasks for the technician to complete each visit. Your system should be thoroughly inspected, cleaned, and serviced.
The contract should list extra fees for emergency service, trip charges, certain filters, etc. It should also list any discounts such as discounts on services, parts, or new equipment.
The contract should specify how labor charges will be billed, whether via a set fee for each service calls, an hourly rate, or a combination. It should also list how any repairs discovered during a routine service visit are handled: Are they completed with your approval during the maintenance visit if minor? Do you need to schedule another appointment for repairs?
The contract should also specify if you will be reminded when maintenance is due and if you will be reminded to renew your contract..
Lastly, the contract should list the amount due, any flexible terms or discounts, and acceptable payment methods.