Standard Features - See Real Energy Savings Added moisture keeps you feeling warm with a lower thermostat. Just three degrees off the thermostat yields about five percent off your bill. - Good Housekeeping Seal. This model is proud to have earned the Good Housekeeping Seal a nearly century-old symbol of quality and trust. - 5-Year Limited Parts Warranty. This product is covered by one of the best warranties in the business. - Parts Warranty : 5--Year Limited Parts Warranty - Capacity : 12 - 18 gallons per day of moisture per day