A dual fuel system pairs a heat pump with a gas furnace and switches between them based on outdoor temperature. You get heat pump efficiency for most of the season and gas heat when it actually costs less to run.
Ruud RD16AY 2 Ton Dual Fuel System — 16 SEER2
4 AHRI-certified dual fuel configurations at 16 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RD16AY24AJVC outdoor unit. Rough sizing guide: 900–1,200 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud RD16AY 3 Ton Dual Fuel System — 16 SEER2
4 AHRI-certified dual fuel configurations at 16 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RD16AY36AJVC outdoor unit. Rough sizing guide: 1,400–1,700 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud RD16AY 4 Ton Dual Fuel System — 16 SEER2
4 AHRI-certified dual fuel configurations at 16 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RD16AY48AJVC outdoor unit. Rough sizing guide: 2,000–2,400 sq ft, to be confirmed with a Manual J load calculation.
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Ruud RD16AY 5 Ton Dual Fuel System — Up to 16 SEER2
8 AHRI-certified dual fuel configurations from 15.2 to 16 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RD16AY60AJVC outdoor unit. Rough sizing guide: 2,400–3,000 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud RD18AY 2 Ton Dual Fuel System — Up to 19 SEER2
4 AHRI-certified dual fuel configurations from 18 to 19 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RD18AY24AJVC outdoor unit. Rough sizing guide: 900–1,200 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud RD18AY 3 Ton Dual Fuel System — Up to 19 SEER2
4 AHRI-certified dual fuel configurations from 18 to 19 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RD18AY36AJVC outdoor unit. Rough sizing guide: 1,400–1,700 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud RD18AY 4 Ton Dual Fuel System — Up to 18 SEER2
5 AHRI-certified dual fuel configurations from 17 to 18 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RD18AY48AJVC outdoor unit. Rough sizing guide: 2,000–2,400 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud RD18AY 5 Ton Dual Fuel System — Up to 17 SEER2
8 AHRI-certified dual fuel configurations from 16 to 17 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RD18AY60AJVC outdoor unit. Rough sizing guide: 2,400–3,000 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud RP14AY 1.5 Ton Dual Fuel System — 14.3 SEER2
4 AHRI-certified dual fuel configurations at 14.3 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RP14AY18AJ1N outdoor unit. Rough sizing guide: 600–900 sq ft, to be confirmed with a Manual J load calculation.
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Ruud RP14AY 2 Ton Dual Fuel System — 14.8 SEER2
4 AHRI-certified dual fuel configurations at 14.8 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RP14AY24AJ2N outdoor unit. Rough sizing guide: 900–1,200 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud RP14AY 2.5 Ton Dual Fuel System — 14.8 SEER2
4 AHRI-certified dual fuel configurations at 14.8 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RP14AY30AJ2N outdoor unit. Rough sizing guide: 1,200–1,400 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud RP14AY 3 Ton Dual Fuel System — Up to 15.2 SEER2
4 AHRI-certified dual fuel configurations from 14.8 to 15.2 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RP14AY36AJ2N outdoor unit. Rough sizing guide: 1,400–1,700 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud RP14AY 3.5 Ton Dual Fuel System — Up to 15.2 SEER2
8 AHRI-certified dual fuel configurations from 14.8 to 15.2 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RP14AY42AJ2N outdoor unit. Rough sizing guide: 1,700–2,000 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud RP14AY 4 Ton Dual Fuel System — Up to 15.2 SEER2
4 AHRI-certified dual fuel configurations from 14.8 to 15.2 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RP14AY48AJ2N outdoor unit. Rough sizing guide: 2,000–2,400 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud RP14AY 5 Ton Dual Fuel System — Up to 15.2 SEER2
8 AHRI-certified dual fuel configurations from 14.8 to 15.2 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RP14AY60AJ2N outdoor unit. Rough sizing guide: 2,400–3,000 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud RP15AY 2 Ton Dual Fuel System — 15.2 SEER2
4 AHRI-certified dual fuel configurations at 15.2 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RP15AY24AJ2N outdoor unit. Rough sizing guide: 900–1,200 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud RP15AY 2.5 Ton Dual Fuel System — Up to 15.2 SEER2
4 AHRI-certified dual fuel configurations from 15 to 15.2 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RP15AY30AJ2N outdoor unit. Rough sizing guide: 1,200–1,400 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud RP15AY 3 Ton Dual Fuel System — 15.2 SEER2
4 AHRI-certified dual fuel configurations at 15.2 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RP15AY36AJ2N outdoor unit. Rough sizing guide: 1,400–1,700 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud RP15AY 3.5 Ton Dual Fuel System — 16 SEER2
5 AHRI-certified dual fuel configurations at 16 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RP15AY42AJ2N outdoor unit. Rough sizing guide: 1,700–2,000 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud RP15AY 4 Ton Dual Fuel System — 15.2 SEER2
4 AHRI-certified dual fuel configurations at 15.2 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RP15AY48AJ2N outdoor unit. Rough sizing guide: 2,000–2,400 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud RP15AY 5 Ton Dual Fuel System — Up to 15.2 SEER2
8 AHRI-certified dual fuel configurations from 14.3 to 15.2 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the RP15AY60AJ2N outdoor unit. Rough sizing guide: 2,400–3,000 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud UP19AY 2 Ton Dual Fuel System — 21 SEER2
2 AHRI-certified dual fuel configurations at 21 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the UP19AY24AJVC outdoor unit. Rough sizing guide: 900–1,200 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud UP19AY 3 Ton Dual Fuel System — Up to 20 SEER2
3 AHRI-certified dual fuel configurations from 19 to 20 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the UP19AY36AJVC outdoor unit. Rough sizing guide: 1,400–1,700 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
Ruud UP19AY 4 Ton Dual Fuel System — 19 SEER2
2 AHRI-certified dual fuel configurations at 19 SEER2. Choose your indoor match above — it sets the certified rating and the price. Built around the UP19AY48AJVC outdoor unit. Rough sizing guide: 2,000–2,400 sq ft, to be confirmed with a Manual J load calculation.
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This product has multiple variants. The options may be chosen on the product page
How the switchover works
The thermostat monitors outdoor temperature. Above the switchover point the heat pump handles heating, which is cheaper than gas at moderate temperatures. Below it the system hands off to the gas furnace, which maintains capacity in deep cold where a heat pump's output falls away. The changeover is automatic and requires no action from the homeowner.
When dual fuel makes sense
It suits homes that already have a gas connection and face genuinely cold spells — which describes most of Arkansas in January. If you have no gas line, an all-electric heat pump system avoids the connection cost entirely. If your winters are consistently severe, a straight gas furnace may be simpler.
What you are buying
An outdoor heat pump, a gas furnace, and a matched evaporator coil, all covered by one AHRI certificate. The switchover point is set during commissioning based on your local utility rates and climate.
