American Dream Services Heating and Cooling guarantees that when the equipment we have installed is maintained and operated in accordance with the manufacturer’s operating and maintenance manuals, the system will perform as we have stated and agreed upon. We have promised a maintained temperature variance of no more than plus or minus 1 degree at your electronic digital thermostat whether heating or cooling your home under normal operating conditions. If the installation temperatures are not achieved, we will make any necessary modifications, repairs or replacements at no charge to you for a period of 5 years.