Cool Works offers annual and bi-annual preventative maintenance options for customers in Manhattan, NYC and the surrounding area. When you sign up for one of our plans you will have the peace of mind that comes with it, which knows your system will be working properly and efficiently, and any problems that arise will quickly be taken care of before they become major ones. An efficiently running system means very happy customers, tenants, and employees. Most manufactures require established maintenance schedules for their products in order to not void their warranty. Your heating and air conditioning bills are guaranteed to increase over time without basic maintenance, and can potentially be a safety hazard. We at Cool Works are fully licensed and insured. An unlicensed Contractor can void your warranty. The money saved by hiring an unlicensed contractor often ends up cost more in the long term from their shoddy work.