Space-saving convenience. Geothermal benefits.

The York® Affinity™ YAS is an outdoor split geothermal heat pump that’s perfect for homes with no interior storage space. Install the YAS outside and connect it to a remote interior air handler or existing fossil fuel furnace for top-notch comfort and savings in any application.


The YAS is designed to be installed outdoors and is perfect for homes that are lacking space. By connecting to a SAH air handler, you can condition your home efficiently and comfortably. In colder climates, pair the split with a fossil fuel furnace. The system automatically selects the most efficient heating method for maximum savings.

Cost effective

Geothermal heat pumps are so efficient that any added cost over traditional equipment is usually recovered in just a few years. And because they have a lifespan of 20-25 years, your investment will last longer and your return on investment will grow year by year.


Geothermal heat pumps are much more efficient than traditional heating and cooling systems. The York® Affinity™ YAS is rated with an efficient 25.3 EER and 4.4 COP, which makes it a great option for your home.

Environmentally responsible

Since our units don’t burn expensive, polluting fossil fuels, they’re the most environmentally responsible options available today. Replacing a furnace and/or air conditioner with geothermal can minimize acid rain threats, air pollution, and the greenhouse effect.


No combustion or flames are used to operate a geothermal heat pump, making it a safe choice for your home and family. Our systems merely move heat to and from the ground rather than by burning natural gas, propane, or oil.

Affordable peace of mind

York® Affinity™ YAS units come with warranties up to 10 years for parts and labor allowances. Other options are available, so see your York® Contractor for details.

SAH Air Handler

The SAH Air Handler has been engineered to work seamlessly with your York® split system and will provide years of efficient quiet comfort. It fits easily into any attic or crawlspace and comes standard with a variable speed ECM blower motor for maximum savings.

Dual Capacity Compressor

YAS units operate at two speeds rather than simply turning “on.” The low setting is more energy efficient and handles the heating and cooling needs of the house about 80% of the time. Units run in this mode for longer periods, which provides lower utility bills, quieter operation, better humidity control and more even temperatures throughout the home.

Aurora Controls

Aurora provides two-way communication between components, advanced operating logic and powerful troubleshooting capabilities. It constantly monitors and optimizes the operation of your unit and provides detailed status information when using our communicating thermostats.

Split Configuration

Pair the outdoor split with a second floor air handler or an existing fossil fuel furnace for flexible installation options.

Coated Coaxial Heat Exchanger

Our proprietary coating protects against condensation at temperatures below 50ºF and extends the life of the coaxial heat exchanger.


Lengthen the life of your system with the optional soft starter. This technology reduces the stress and sound associated with start-up, reduces light flicker and decreases start-up amperage by up to 70%.

Loop Pumps

The flow center is conveniently mounted within the cabinet, eliminating the need for any indoor loop piping. The loop pipes enter the unit through an opening in the bottom panel.


A professional grade powder-coat finish provides long-lasting beauty and protection. The unit is fully insulated with cleanable foil-backed insulation that ensures quiet operation.


All York® geothermal units utilize R-410A refrigerant, which is friendly to the environment.

Scroll Compressor
Fan Motor
Aurora Controls
Hot Water Generation 
Up to 10-Year Parts and Labor Allowance
2-6 ton
Efficiency Rating
25.3 EER / 4.4 COP
Energy Star
Most Models - when installed with a York SAH air handler