Dedicated hot water generation

The York® Affinity™ YAWS is a water to water hydronic system that’s perfect as an add-on to handle 100% of your domestic hot water. Also great for radiant floor and pool & spa heating, the YAWS provides luxurious comfort and excellent savings.1


Geothermal heat pumps are much more efficient than traditional heating and cooling systems. The York® Affinity™ YAWS is rated at 17.5 EER for cooling and 3.1 COP for heating and can reduce water heating costs by as much as 60% per year. Efficiency translates into savings.


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.

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.

Environmentally responsible

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


A York® Affinity™ YAWS provides consistent comfortable heating when used in radiant floor applications and is also perfect for 100% domestic hot water use.

Affordable peace of mind

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


Powerful Aurora controls offer two-way communication between components, industry-leading operating logic, and thorough troubleshooting capabilities. Optional upgrades add true energy and refrigeration monitoring capabilities and more.

Hot Water Assist

Larger Affinity™ YAWS units can include a hot water assist option to provide supplemental heating of domestic hot water while simultaneously providing space heating.


The Affinity™ YAWS cabinet is built for durability and long-lasting beauty. The Affinity™ YAWS’s ability to connect piping at either the front or back of the unit makes installation and service easy for the contractor. Control panels can also be placed at either end for convenient operation.


A high efficiency scroll compressor is used to provide years of reliable, efficient operation. Compressors are double-isolation mounted and utilize compressor blankets for ultra quiet operation.


Lengthen the lifetime of your system and compressor with the optional IntelliStart soft starter. This accessory decreases start-up amperage by up to 70% and helps eliminate light flicker.

Insulated Coaxial Heat Exchanger

We use heat exchangers at the beginning and end of the first sentence. Change it to: Affinity™ YAWS heat exchangers are coated with foam insulation for increased efficiency and durability .


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

Scroll Compressor
Fan Motor
Aurora Controls
Hot Water Generation 
Optional - External mount pump (Not available on 1½- and 2-ton models)
Up to 10-Year Parts and Labor Allowance
1.5-6 ton
Efficiency Rating
17.5 EER / 3.1 COP
Energy Star
Most Models

1Not suitable for direct use with chlorinated water. Can be installed with an additional heat exchanger for chlorinated pool applications.