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Affinity 9.C & 8.C Modulating Gas Furnace

A Step Up For Any Home

Affinity™ 9.C and 8.C Series high-efficiency gas furnaces are a step up for any home. That's because York® Affinity™ modulating gas furnaces continuously adjust their heating level by 1% increments to match the degree of comfort you need exactly and efficiently. In fact, they can maintain indoor temperatures to within 1/2 degree of your thermostat's setpoint.* The variable speed, ECM, blower slowly ramps up and down providing quiet and efficient air distribution while reducing overall utility consumption.

The Affinity™ 9.C is the highest rated gas furnace in the industry (up to 98% AFUE), which means more efficiency and lower energy costs.

*Actual results may vary.


Affinity YP9C Gas Furnace

  • 97.5 to 98% AFUE
  • The most energy efficient furnace on the planet
  • Modulating burner, variable-speed motor
  • 60–120 Mbh input
  • Lifetime heat exchanger warranty
  • 10-Year parts warranty

 Affinity™ YP9C Brochure

Affinity YM9M Gas Furnace

  • 97% AFUE
  • Modulating burner, constant-speed motor
  • 60–120 Mbh input
  • Lifetime heat exchanger warranty
  • 10-Year parts warranty

 Affinity™ YM9M Brochure

Match Your Comfort Level
By Degrees

  • Modulating design uses a firing rate at 1% increments to match comfort levels more exactly
  • Models with a variable-speed blower reduce electrical consumption
  • Fewer starts and stops saves more fuel and operates more quietly
  • Makes longer runtimes more affordable for more air infiltration to improve indoor air quality
  • Adjustable for dry, temperate, or humid climates with ClimaTraK™ technology
2009 AHR Award Logo 2009 AHR Expo Innovation Award - YP9C Gas Furnace

The York® Affinity™ Series YP9C 98% AFUE 33” modulating gas furnace recently was recognized as the winner in the heating category of the 2009 AHR Expo Innovation Awards Competition.  It was chosen by a panel of professionals, selected for their knowledge and expertise in the HVACR industry.

Consumers Digest - Best Buy Award

Consumers Digest - Best Buy Award - YP9C Gas Furnace

We are also proud to announce the Consumers Digest Award was designated to the York® Affinity Series 33” modulating gas furnace.

You can be assured the Affinity™ Series YP9C 98% AFUE furnace is an award winning, high quality heating unit.

Warranty - Lifetime/10-Years


York® backs every system with one of the best limited warranties you’ll find: Every Affinity™ 9.C & 8.C gas furnace is backed with a lifetime limited warranty on the heat exchanger. Both come with a 10-year limited warranty on all other parts*.

And, if you purchase any York® Affinity™ series gas furnace with a matching Affinity™ series two-stage air conditioner or heat pump, you'll receive our Premium System Warranty Program: a 10-year limited parts warranty and a lifetime limited compressor warranty.

*Must be installed after May 1, 2009, and registered online within 90 days of installation—otherwise the parts warranty reverts to a 5-year limited parts warranty.

EnerGuide - 98% AFUE


The Affinity 9.C is up to 98% AFUE rated.
The EnerGuide label gives you important information when you shop for a new appliance, including estimated energy consumption.

Energy Star Logo


Earning the ENERGY STAR® means products meet strict energy efficiency guidelines set by the U.S. Environmental Protection Agency and the Department of Energy. When compared to standard models, ENERGY STAR® products are between 15 and 25% more efficient. This model meets ENERGY STAR® requirements for energy efficiency.

Good Housekeeping Logo

Good Housekeeping

For almost 100 years, the Good Housekeeping Seal has been a symbol of quality and trust. This model is proud to have earned the Good Housekeeping Seal.



York® encourages professionalism through North American Technician Excellence, Inc.(NATE). NATE is the leading certification program for technicians in the heating, ventilation, air-conditioning and refrigeration (HVAC/R) industry, and is the only test supported by the entire industry.

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