Especially for those with limited space in which to store their HVAC units, a packaged unit can be fairly beneficial due to its spatially efficient design. Package units are located either on the roof or on the side of a building, and they house a number of combined HVAC systems, like the packaged air conditioners that include a compressor, coils and air handler, the packaged heat pumps that contain a heat pump and often a electric heat strip, a packaged gas-electric unit that combines an air conditioner with a gas-powered furnace, and a packaged dual-fuel unit that contains a heat pump and a gas furnace. There are no indoor components of this central air system.
In order to pick out the best cooling and gas package unit (air conditioner and gas furnace), we can give you a rough estimate of the tonnage that you will need to cool or heat your space, keeping in mind that any space that is 1,000 square feet or less can simply benefit from a 1.5-ton heat pump:
1,000-1,250 square feet: 2 Tons
1,250-1,500 square feet: 2.5 Tons
1,500-1,750 square feet: 3 Tons
1,750-2,000 square feet: 3.5 Tons
2,000-2,500 square feet: 4 Tons
2,500-3,000 square feet: 5 Tons
If you are looking to purchase a heat kit (the portion of the heat pump that will heat your home during the colder months), here is a simple guide:
Very warm climates:
1.5-3-Ton Heat Pump: 5 kW Heat Kit
3.5-5-Ton Heat Pump: 10 kW Heat Kit
1.5-2-Ton Heat Pump: 5 kW Heat Kit
2.5-5-Ton Heat Pump: 10 kW Heat Kit
1.5-2.5-Ton Heat Pump: 10 kW Heat Kit
2.5-3.5-Ton Heat Pump: 15 kW Heat Kit
4-5-Ton Heat Pump: 20 kW Heat Kit
Very cold climates:
1.5-2-Ton Heat Pump: 10 kW Heat Kit
2.5-3-Ton Heat Pump: 15 kW Heat Kit
3-5-Ton Heat Pump: 20 kW Heat Kit
Here is how to find the proper tonnage for your gas furnace:
Warmest climates: 30-35 BTUs per square foot
Warm climates: 35-40 BTUs per square foot
Mild climates: 40-45 BTUs per square foot
Cold climates: 45-50 BTUs per square foot
Coldest climates: 50-60 BTUs per square foot
You’ll need to decide which orientation you’d like to choose for your gas furnace. We offer downflow horizontal or upflow horizontal models. Upflow furnaces are often installed in the basement or in the closet, where the ductwork is located above the level of installation. Contrarily, downflow systems are installed in crawl spaces or in areas where the ductwork is below the level of installation.
You also have the option to choose between a “standard efficiency” gas furnace system or a “high efficiency” gas furnace system. On our site, “standard efficiency” stands for gas furnace systems that are 80% efficient and “high efficiency” gas furnace systems are those that are 92% efficiency or higher.
Disclaimer: Before making a purchase, you should always check first with your qualified installer to figure out what unit is best for your home or space.