The Right Maintenance Service For You At Four Seasons Controlled Climates we recognize that different businesses have different maintenance needs. That's why we have carefully created a variety of flexible maintenance service options. Equal Billing Maintenance/Service Plan Custom-designed program that looks after all maintenance, repairs and upgrades with the convenience and ease of preset budgeting. Certified Service Plan Worry-free scheduled maintenance that is custom designed for your specific needs. Time & Material Service Call for services as you need them . Winter Start-Up Service Thorough inspection and detailed maintenance that will ensure safe, reliable and efficient operation of your heating equipment all winter long. Spring Start-Up Service Get your cooling systems into tip top shape and ready for the hot, humid Southern Ontario summers.