A maintenance agreement outlines the steps one party will undertake to insure the upkeep, repair, serviceability of another party's property. A maintenance agreement is essentially a contract between you and your HVAC company for ongoing service.A maintenance services agreement is a legal document between two parties in which one party provides ongoing maintenance support for the other party. The Illinois Marriage and Dissolution of Marriage of Act sets out three different types of maintenance: fixed-term, reviewable, and indefinite. Filing a Financial Affidavit is crucial in Chicago divorces and parentage cases. Consult a Chicago divorce attorney for guidance. Maintenance (formerly known as alimony) is awarded for a period of time after the divorce. Maintenance (formerly known as alimony) is awarded for a period of time after the divorce. "Contractor .. is defined in the preamble of this Agreement and includes its successors and assigns. Trane Chicago Service will furnish the services, as stipulated in the scope of coverage, for the following amount.