Variable capacity. The best of the best.

The variable capacity York® Affinity™ YAFV is our flagship product and provides the industry's most efficient heating, cooling, and hot water generation. Its variable capacity compressor scales output in unison with a variable speed blower motor and variable speed loop pump to provide a level of comfort and savings that’s unmatched.


Geothermal heat pumps are much more efficient than traditional heating and cooling systems. The York® YAFV is rated with an amazing 41 EER and 5.3 COP, which is twice as efficient as any normal air conditioner or heat pump and a third higher than the most efficient dual stage geothermal heat pump. Efficiency translates into savings.


One York® geothermal heat pump will provide heating, cooling, and supplemental hot water for your home. A variety of sizes and configurations are available, so no matter your home or climate, a geothermal heat pump will work for you.

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

Variable capacity compressor

The YAFV is one of the only units on the market to incorporate variable capacity operation. While most HVAC systems run at only one or two speeds, the YAFV can adjust its output to precisely match the heating or cooling needs of your home. Gently ramping up and down among many speeds makes this unit amazingly quiet, remarkably comfortable and the most efficient unit you can buy.


Sophisticated Aurora controls provide easy-to-use but extensive troubleshooting capabilities as well as advanced two-way communication between components. Expanded capabilities include true energy monitoring, extended hot water generation, and more.

Blower motor

An ECM variable speed blower motor operates at only the speed needed for the greatest in efficiency and savings. The active dehumidification feature monitors blower motor performance for maximum moisture removal.

Aurora Interface Diagnostic port

Technicians can diagnose and service your system without even opening the unit by utilizing the external communication port and interface tool.

Coated Coaxial Heat Exchanger

Coaxial heat exchanger life is extended by our proprietary coating that protects against condensation at temperatures below 50F.

Advanced Hot Water Generation

The optional hot water assist option preheats water and delivers it to your water heater or buffer tank. The system monitors heat pump conditions to optimize hot water generation.

Coated Air Coil

Equipment life is extended by utilizing a corrosion resistant air coil that is large enough to improve efficiency while providing better dehumidification during cooling.


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.

Filter and Filter Rack

A high performance MERV 11 pleated filter comes standard while an optional MERV 13 pleated filter is available. The filter rack can be easily converted for use with 1" or 2" filters.


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

Variable Capacity Compressor
Proprietary Coating
Fan Motor
Variable Speed ECM Blower Motor
Aurora Controls
Hot Water Generation 
Optional - Internal mount pump
MERV 11 filter
Up to 10-Year Parts and Labor Allowance
3-5 ton
Efficiency Rating
41 EER / 5.3 COP
Energy Star