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A951S 95% Single Stage Gas Furnace

Every A951S furnace is built with smart thinking and value throughout, from the advanced motor to Quiet Combustion technology.

  • EHX Technology Every Armstrong Air furnace is engineered and built with EHX Technology, a patented design that eliminates the hot spots that can shorten furnace life. EHX Technology makes heat exchangers more durable, and with its advanced airflow system, more air contacts the heat exchanger surface area for greater heat exchange, enhancing efficiency and comfort.
  • Advanced Heat Exchanger Made from stainless steel for maximum strength and crimped, rather than welded, Armstrong Air heat exchangers are highly resistant to thermal fatigue and other stresses caused by repeated heating and cooling. During the testing process, they are subjected to temperatures that far exceed normal operating ranges, to ensure they will stand up to decades of use.
  • Quiet Combustion Technology Uses a smaller Btu input per burner for quieter start-up and operation while providing more even heat distribution.
  • Internal Monitoring Your Armstrong Air A97MV furnace‚Äôs electronic control system prolongs system life by continuously monitoring internal components for optimum performance and fault prevention.
  • Dual-Fuel The combination of a gas furnace and an electric heat pump pairs two energy sources for the perfect balance of energy efficiency and comfort.
MODELConfigurationInput MBtuHOutput MBtuHAFUECFMDimensions
A95UH1D045B08S(A)Up / Hor. 44.0 41.0 95.0 1125 33x17.5x24.9 121
A95UH1D045B12S(A)Up / Hor. 44.0 42.0 95.0 1550 33x17.5x24.9 123
A95UH1D070B12S(A)Up / Hor. 66.0 64.0 95.0 1515 33x17.5x24.9 128
A95UH1D090C12S(A)Up / Hor. 88.0 85.0 95.0 1580 33x21x24.9 145
A95UH1D090C16S(A)Up / Hor. 88.0 85.0 95.0 2060 33x21x24.9 148
A95UH1D110C16S(A)Up / Hor. 110.0 106.0 95.0 1940 33x21x24.9 157
A95UH1D110C20S(A)Up / Hor. 110.0 106.0 95.0 2265 33x21x24.9 163
A95UH1D135D20S(A)Up / Hor. 132.0 126.0 95.0 2350 33x24.5x24.9 180
A95DF1D045B12S(A)Downflow 44.0 42.0 95.0 1500 33x17.5x25.4 125
A95DF1D070B12S(A)Downflow 66.0 64.0 95.0 1445 33x17.5x25.4 131
A95DF1D090C20S(A)Downflow 88.0 85.0 95.0 2200 33x21x25.4 150
A95DF1D110C20S(A)Downflow 110.0 106.0 95.0 2275 33x21x25.4 145

Warranty Information

  • Heat Exchanger - Limited Lifetime
  • All Parts for 120 months -

Available Documents


We customize your comfort by making your home smarter, healthier and more efficient. Your peace of mind is as important to us as your comfort.

That's why every product us backed by warranties as robust and dependable as the products themselves.

Every piece of heating & cooling equipment is eligible for a 12-Year Parts Warranty, when you join the "Rock*Star Maintenance Program".

All other products are eligible for the 12-Year Parts Warranty.

Ask for details, terms, and conditions. All product warranties are registered by Harmonic within 30 days of purchase.

on all equipment repairs, indoor air quality & comfort items

Including humidifiers, air filters, air cleaners, thermostats and more! 12 year parts and labor warranty requires joining Rock*Star Maintenance Program. Ask for details, terms, and conditions.

The "Exclusive 12-year Parts & Labor Warranty" covers parts and labor cost from the time of purchase. "Exclusive 12-year Parts & Labor Warranty" requires annual maintenance to be performed by Harmonic Heating & Air Conditioning beginning immediately from the time of purchase. Maintenance must be performed annually during the initial 12-year coverage term in order to uphold warranty status. If annual maintenance is missed or not performed by Harmonic Heating & Air Conditioning, the "Exclusive 12-year Parts & Labor Warranty" becomes void immediately. Warranty coverage defaults to a 10 year part warranty and a 2 year labor warranty from the time of purchase. Warranty is registered to the purchaser and is not transferable.


when you purchase a Furnace or Air Conditioner from Harmonic!