High volume hot water for radiant floor, domestic hot water or pool & spas

The York® Affinity™ YAWT is a water to water hydronic system that can handle the high volume domestic hot water demands of today’s larger homes. Also perfect for radiant floor and pool & spa heating, the YAWT is the right choice for your high capacity hot water needs.1


Geothermal heat pumps are much more efficient than traditional heating and cooling systems. The York® Affinity™ YAWT is rated with an amazing 22.0 EER and 3.5 COP 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™ YAWT 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™ YAWT units come with warranties up to 10 years for parts and labor allowances. Other options are available, so see your York® Contractor for details.


Two high efficiency scroll compressors are used to reduce operating costs and provide years of reliable operation. Sound attenuating compressor blankets and double-isolation mounting plates are used in every unit for quiet operation.


A sophisticated control board monitors and controls the heat pump operation, and the user interface can be used to aid in diagnostics and unit setup. Other features are high/low pressure protection, freeze detection, and loss of charge detection.

Brazed Plate Heat Exchangers

Brazed plate heat exchangers provide increased efficiency, performance, and reliability. They’re also much smaller than traditional coaxial heat exchangers, so they allow Affinity™ YAWT units to provide high capacity performance in a compact unit.


An optional soft starter is available to reduce start-up amperage by up to 70%. This valuable accessory can help eliminate light flicker and power surges on your sensitive electronics as well as prolong the lifespan of the compressors.


The Affinity™ YAWT unit cabinet is fabricated from heavy gauge steel with a durable finish for long-lasting beauty and protection. Control panels can be placed on either end, allowing piping to be located at the front or the back of the unit to improve serviceability. Large lift-out panels provide access from all four sides.


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

Scroll Compressor
Fan Motor
Microprocessor Controls
Hot Water Generation 
Internal mount pump
Up to 10-Year Parts and Labor Allowance
8-15 ton
Efficiency Rating
22 EER / 3.5 COP
Energy Star
100 and 120 Models Only

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