Heating and Cooling From One Rooftop Unit

Goodman Packaged Units in El Paso for properties with limited indoor equipment space and need for combined HVAC systems

Jackson Supply Company offers the Goodman GPGM3 gas/electric packaged unit, which combines heating and cooling components in a single outdoor cabinet. This unit mounts on rooftops or concrete pads, eliminating the need for indoor furnace closets or air handler installations. You get complete climate control without dedicating interior square footage to HVAC equipment, which suits commercial properties, mobile homes, and residential buildings with tight indoor layouts.


The GPGM3 arrives factory-assembled and tested, reducing onsite installation time and minimizing refrigerant line connections that could develop leaks. Gas burners handle heating while the air conditioning circuit provides cooling, and both functions share the same blower and ductwork. Gorman Airco connects the unit to your gas line, electrical service, and supply ductwork, then tests airflow and combustion before leaving your property.


Contact Jackson Supply Company to determine if your roof structure or ground space supports a packaged unit.

A furnace and water heater sit in a residential basement, connected to white PVC and metal ventilation piping.
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Factory Integration and Outdoor Durability

Your packaged unit includes welded refrigerant lines, pre-wired controls, and secured internal components that arrive ready for connection to ductwork and utilities. The steel cabinet withstands rain, hail, and UV exposure, with powder-coated panels that resist rust and fading. Gorman Airco seals duct connections with mastic and foil tape to prevent air leaks, ensuring conditioned air reaches interior spaces without pressure loss.


You will notice heating and cooling activate from a single thermostat call, with the unit switching between gas burners and refrigerant compressor based on season. Indoor temperatures stabilize quickly, and airflow remains consistent across all rooms connected to the duct system. The unit sits outdoors, so compressor noise and blower vibration stay isolated from living spaces.


Packaged units simplify maintenance by consolidating components in one accessible location, though rooftop installations require ladder access or roof hatches for annual service. The system does not include a backup heat source, so gas supply interruptions halt heating until service resumes. Cooling performance matches that of split systems with equivalent tonnage, and heating output depends on burner capacity and gas pressure supplied to the unit.

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Questions About Packaged Unit Performance

Property owners in El Paso often ask how packaged units compare to split systems and what installation challenges arise with rooftop mounting.

How does a packaged unit differ from a split system?

A packaged unit houses all components in one outdoor cabinet, while split systems use separate indoor and outdoor units connected by refrigerant lines, requiring more installation steps.

What roof conditions support safe packaged unit installation?

The roof must provide structural support for the unit's weight, proper drainage to prevent water pooling around the cabinet, and clearance for airflow around intake and exhaust vents.

Why choose a packaged unit over separate furnace and air conditioner?

Packaged units save indoor space, reduce refrigerant line length, and simplify service access by placing all components in one location.

How often should rooftop units receive maintenance?

Annual inspections should include coil cleaning, burner inspection, filter replacement, and checking for panel rust or seal degradation caused by weather exposure in El Paso.

What happens if ductwork leaks or becomes disconnected?

Air escapes before reaching interior spaces, reducing system efficiency and causing uneven temperatures, which makes proper duct sealing critical during installation.

Jackson Supply Company can evaluate your property layout, assess roof access, and recommend a Goodman packaged unit sized to match your heating and cooling loads.