Gas Heat & Air Conditioning

Get reliable comfort with our Gas Heat & Air Conditioning packages-budget-friendly gas package units using R-410A and 13.4 SEER2 cooling.

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Gas Heat & Air Conditioning

These packaged gas/electric systems combine a natural gas furnace with an electric air conditioner in one weather-tight cabinet. Designed for rooftop or ground installation, they support downflow or horizontal air discharge to match existing ductwork. With 13.4 SEER2 cooling efficiency and an 81% AFUE gas furnace, they deliver year-round comfort and straightforward serviceability.

Perfect for homeowners, licensed contractors, property managers, and light commercial applications, these units simplify replacements of aging rooftop or pad-mounted equipment. Choose capacities from 2 to 5 tons, with popular 3.5, 4, and 5 ton options, and furnace outputs of 90,000 or 110,000 BTU to meet regional heating needs. Systems use R-410A refrigerant and arrive factory-charged for reliable performance. Priced from about $3,820 to $5,450, they offer strong value without compromising durability.

Professional installation is required to ensure safe gas, electrical, and duct connections and to maintain warranty coverage. Whether mounted on a roof curb or a level ground pad, follow local codes for clearances, condensate routing, and filter access. Standard models are set up for natural gas; many can be field-converted to propane with the appropriate manufacturer kit.

Top Brands for Gas Heat & Air Conditioning

DiamondAir packaged gas/electric units are known for dependable performance, straightforward service, and budget-friendly pricing across common 2-5 ton sizes.

Frequently Asked Questions

  • What size (tonnage) gas package unit do I need for my home or small business?

    A Manual J load calculation is best. As a quick guide, many spaces use about 400-600 sq ft per ton. We carry 2-5 ton units, including 3.5, 4, and 5 ton for larger areas.

  • Are these DiamondAir gas package units suitable for downflow or horizontal applications?

    Yes. Models are configured for downflow or horizontal discharge to match existing ductwork on rooftops or ground pads.

  • What does 13.4 SEER2 mean compared to older SEER ratings?

    SEER2 uses a newer, more stringent test. 13.4 SEER2 roughly aligns with about 14 SEER in older terms and meets current national standards.

  • Do these units require natural gas, and can they be configured for propane with a kit?

    They ship for natural gas. Most models can be converted to LP using a manufacturer-approved kit installed by a licensed professional.

  • What BTU furnace output (90k vs 110k) should I choose for my climate?

    Colder climates or larger, leakier homes often need 110k BTU. Moderate climates may fit 90k BTU. A heat-loss calculation provides the right answer.

  • Is professional installation required for packaged gas/electric units?

    Yes. Gas, venting, electrical, and duct connections must meet code and manufacturer specs to ensure safety, performance, and warranty coverage.

  • Are these R-410A units compliant with current refrigerant regulations and serviceable long-term?

    Yes. R-410A equipment remains serviceable, and refrigerant supply is expected for years. These systems meet current requirements.

  • What clearances and duct connections are needed for rooftop vs. ground installation?

    Install on a roof curb or level pad with code-required clearances (often 24-36 inches for service). Downflow uses bottom ducts; horizontal uses side ducts.

  • What does 81% AFUE mean for heating efficiency?

    AFUE 81% means about 81% of the gas energy becomes usable heat. This is common for packaged units and balances cost and performance.

  • Do these packaged units include everything needed, or are accessories required?

    The unit includes the furnace, coil, blower, and condenser in one cabinet, factory-charged with R-410A. You may need a curb/pad, ducts, gas line, disconnects, thermostat, and any LP kit.

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