Infinity® 15 Heat Pump 25HNB5 Sometimes Less is More Northern climates with less humid, milder summers may not call for the highest degree of efficiency. This model gives you the benefits of Infinity, ENERGY STAR® qualified cooling and heating efficiency and quiet operation. Standard Features Up to 16 SEER cooling efficiency Up to 8.5 HSPF heating efficiency Sound: as low as 68 decibels1 Single-stage compressor operation Compressor sound blanket and Silencer System II™ design Filter drier system protection from moisture and contaminants Ideal Defrost heating operation with Infinity control WeatherArmor™ Ultra protection Non-ozone depleting Puron® refrigerant 10-year parts limited warranty2 Optional Features Optional labor warranty available3 1 Quietest size within each model group during most common cooling operating condition. 2 To the original owner, when product is used in a residence, a 10-year parts limited warranty upon timely registration of your new equipment. Warranty period is 5 years if not registered within 90 days. Jurisdictions where warranty benefits cannot be conditioned on registration will automatically receive a 10-year parts limited warranty. See warranty certificate for complete details. 3 Ask your Carrier® dealer for details.