I’m Mark Callahan, HVAC pro with over 20 years in the field, here to shed light on package unit air conditioner systems—often called air conditioner and heater combo units or packaged HVAC systems. These all-in-one units, which combine heating and cooling in a single outdoor cabinet, are a common choice for certain buildings and applications. But are they right for your home or business? And how do they compare to the increasingly popular split systems, like the Goodman 3 Ton 14.5 SEER2 R-32 Bundle?
Let’s break down everything you need to know about a c heater combo units, including key terms like heater and air conditioner in one unit, packaged air conditioning units, heat pump AC combo, and more.
What Is a Packaged HVAC or AC Heater Combination Unit?
A packaged air conditioning unit or packaged heating and cooling unit puts all the heating and cooling components—compressor, evaporator coil, condenser, air handler, and furnace or electric heater—inside a single outdoor cabinet. This design is sometimes called a 3 ton HVAC package unit or a 1 1/2 ton package unit, depending on capacity.
You might also hear these called:
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Combination air conditioner and heater
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Electric heater and air conditioner units
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Heat and AC combo unit
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All in one air conditioner or all in one heating and cooling unit
These units work well in places where indoor space is limited, like rooftops, garages, mobile homes, or commercial buildings that lack mechanical closets.
For a detailed overview of packaged systems, the U.S. Department of Energy provides a helpful explanation on their site covering central air conditioning systems.
Advantages of Packaged Heating and Cooling Combo Units
1. Space Savings and Installation Ease
Because everything is packaged in one unit outside, there’s no need for an indoor air handler or furnace, freeing up valuable interior space. This makes packaged units a go-to for rooftop installations or structures where indoor mechanical rooms aren’t an option.
2. Simplified Maintenance
All components are accessible in one location, making service and repairs quicker and often less expensive. For businesses with limited downtime, this can be a game changer.
3. Suitable for Various Heating Options
Packaged units come in electric heating, gas furnace combos, or heat pump versions—sometimes called air conditioner furnace combination or electric ac and heater units.
For a deeper dive into the pros and cons of packaged HVAC versus split systems, check out this informative HVAC Training 101 article on packaged systems.
Understanding Efficiency and Performance
Packaged HVAC systems typically have SEER ratings from 14 to 16, which is competitive but generally lower than high-end split systems that can exceed SEER 20. With the new SEER2 standards rolling out, efficiency is improving. Many packaged units now use eco-friendlier refrigerants like R-410A or R-32.
If you’re curious about how efficiency ratings impact your energy bills, the ENERGY STAR website is an excellent resource to understand heat pump performance and energy savings.
Sizing Your Packaged AC Heater Combo Unit
Correct sizing is critical for comfort and efficiency. Oversized units will short cycle, leading to wear and inefficient humidity control. Undersized units struggle to keep up during peak weather.
Typical guidelines:
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1 1/2 ton package unit: Up to 600–800 sq ft
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3 ton HVAC package unit: Suitable for 1,500–2,200 sq ft
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Larger packages serve bigger commercial spaces
Use reliable load calculators to estimate your needs, like the one offered by HVAC Load Calculator.
Packaged Units vs Split Systems: Which is Better?
The packaged HVAC system offers a neat solution when indoor space or retrofit challenges exist. However, for many residential homes with ductwork and mechanical room space, a split system, such as the Goodman 3 Ton 14.5 SEER2 R-32 Bundle, often provides:
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Greater efficiency
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Quieter operation indoors
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More flexible zoning options
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Lower long-term operating costs
Consumer Reports and other reviewers often recommend split systems for new home construction or complete HVAC overhauls. You can find detailed comparisons on trusted review sites like Modernize.
Installation Considerations
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Electrical Requirements: Packaged units generally require 220V service; some commercial units need three-phase power. Confirm your electrical infrastructure before purchase.
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Location: Rooftop or slab-mounted installation affects sound and maintenance access. Proper installation on curbs or pads is essential to prevent vibration and water pooling.
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Ductwork: While packaged units simplify equipment footprint, ductwork still needs proper insulation and sealing for optimal performance.
Industry best practices and manufacturer installation instructions ensure longevity and performance—important to avoid costly callbacks. Carrier, a leading HVAC manufacturer, shares installation guidelines for packaged units in their commercial packaged systems manual.
Cost of Packaged Heating and Air Conditioning Combo Units
Typical installed prices can vary based on capacity and options:
| Capacity | Approximate Installed Cost |
|---|---|
| 1.5 ton electric combo | $4,000–$6,000 |
| 3 ton gas pack unit | $6,500–$9,000 |
| 4+ ton commercial unit | $8,000–$13,000 |
Compared to split systems, packaged units can cost more upfront but may save on duct or indoor space remodeling.
Final Word from Mark Callahan
If your space or project calls for an all-in-one air conditioner and heating unit, packaged HVAC systems are worth considering. They simplify installation and service for tricky setups, like rooftops or garages.
That said, if you have indoor space and existing ductwork, I recommend exploring split systems like the Goodman bundle for better efficiency, quieter operation, and potentially lower costs over time.
When you’re ready to shop, sizing, or plan your install, lean on professionals and trusted sources. HVAC decisions are investments in comfort and peace of mind.
Stay cool and warm,
Mark Callahan
