Infinity® 18VS Heat Pump 25VNA8 Variable-Speed Comfort And Unbelievable Quiet in a Surprisingly Small Unit The Infinity 18VS heat pump is different in a lot of ways. It offers variable-speed compression that can step down in 5 stages to as low as 25% of its capacity. That’s huge from a comfort perspective. The ability to run in lower speeds most of the time makes it quieter and more adept at removing humidity in the summer. It’s also significantly better than a 2-stage unit at keeping temperatures even. Plus, those lower speeds are the sweet spot for the unit’s best efficiency levels and for getting the most benefit out of other systems you might have like an air purifier because of more constant air flow through the system. And, it’s seldom you can upgrade your system a component at a time. Most often, the leap to higher efficiency and better comfort via a communicating system for that home you love, can mean you have to deal with the cost of a whole system even though only your outdoor cooling unit has called it quits. The Infinity 18VS could change that for you. Your Carrier® expert can help you determine if it can work with your existing indoor unit so you can upgrade in steps. Standard Features Up to 18 SEER cooling efficiency Up to 11 HSPF heating efficiency Sound: as low as 55 decibels1 Optimal humidity and temperature control when managed by the Inifinty Touch control Variable, 5-stage compressor operation for ultimate comfort and quiet 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 Ask your Carrier® dealer for details. 3 To the original owner, when product is used in a residence, a 5-year seacoast corrosion parts limited warranty. See warranty certificate for complete details.