ACCA Manual J & Manual D48 Verified Home Sizing Combinations
HVAC Load Sizing & Tonnage Directory
Eliminate improper equipment sizing. Whether you are replacing a residential air conditioner or installing a modern variable-speed heat pump, select your square footage and climate zone below to get the certified cooling tonnage, heating capacity, airflow CFM, and duct diameter.
Zone 1: Deep South & Gulf Coast (High Humidity)
Extremely hot and humid summers (FL, TX, LA, AZ, Southern GA). Requires high latent humidity removal.500 Sq Ft Home
Cooling Tonnage:1.5 Tons
Cooling Capacity:18,000 BTU
Airflow Delivery:600 CFM
800 Sq Ft Home
Cooling Tonnage:2 Tons
Cooling Capacity:24,000 BTU
Airflow Delivery:800 CFM
1,000 Sq Ft Home
Cooling Tonnage:2.5 Tons
Cooling Capacity:30,000 BTU
Airflow Delivery:1,000 CFM
1,200 Sq Ft Home
Cooling Tonnage:3 Tons
Cooling Capacity:36,000 BTU
Airflow Delivery:1,200 CFM
1,500 Sq Ft Home
Cooling Tonnage:4 Tons
Cooling Capacity:48,000 BTU
Airflow Delivery:1,600 CFM
1,800 Sq Ft Home
Cooling Tonnage:4.5 Tons
Cooling Capacity:54,000 BTU
Airflow Delivery:1,800 CFM
2,000 Sq Ft Home
Cooling Tonnage:5 Tons
Cooling Capacity:60,000 BTU
Airflow Delivery:2,000 CFM
2,200 Sq Ft Home
Cooling Tonnage:5 Tons
Cooling Capacity:60,000 BTU
Airflow Delivery:2,000 CFM
2,500 Sq Ft Home
Cooling Tonnage:5 Tons
Cooling Capacity:60,000 BTU
Airflow Delivery:2,000 CFM
3,000 Sq Ft Home
Cooling Tonnage:5 Tons
Cooling Capacity:60,000 BTU
Airflow Delivery:2,000 CFM
3,500 Sq Ft Home
Cooling Tonnage:5 Tons
Cooling Capacity:60,000 BTU
Airflow Delivery:2,000 CFM
4,000 Sq Ft Home
Cooling Tonnage:5 Tons
Cooling Capacity:60,000 BTU
Airflow Delivery:2,000 CFM
Zone 2: Southeast & Central Warm
Hot summers with mild to moderate winters (NC, SC, TN, OK, Northern TX, Southern CA).500 Sq Ft Home
Cooling Tonnage:1.5 Tons
Cooling Capacity:18,000 BTU
Airflow Delivery:600 CFM
800 Sq Ft Home
Cooling Tonnage:1.5 Tons
Cooling Capacity:18,000 BTU
Airflow Delivery:600 CFM
1,000 Sq Ft Home
Cooling Tonnage:2 Tons
Cooling Capacity:24,000 BTU
Airflow Delivery:800 CFM
1,200 Sq Ft Home
Cooling Tonnage:2.5 Tons
Cooling Capacity:30,000 BTU
Airflow Delivery:1,000 CFM
1,500 Sq Ft Home
Cooling Tonnage:3.5 Tons
Cooling Capacity:42,000 BTU
Airflow Delivery:1,400 CFM
1,800 Sq Ft Home
Cooling Tonnage:4 Tons
Cooling Capacity:48,000 BTU
Airflow Delivery:1,600 CFM
2,000 Sq Ft Home
Cooling Tonnage:4.5 Tons
Cooling Capacity:54,000 BTU
Airflow Delivery:1,800 CFM
2,200 Sq Ft Home
Cooling Tonnage:5 Tons
Cooling Capacity:60,000 BTU
Airflow Delivery:2,000 CFM
2,500 Sq Ft Home
Cooling Tonnage:5 Tons
Cooling Capacity:60,000 BTU
Airflow Delivery:2,000 CFM
3,000 Sq Ft Home
Cooling Tonnage:5 Tons
Cooling Capacity:60,000 BTU
Airflow Delivery:2,000 CFM
3,500 Sq Ft Home
Cooling Tonnage:5 Tons
Cooling Capacity:60,000 BTU
Airflow Delivery:2,000 CFM
4,000 Sq Ft Home
Cooling Tonnage:5 Tons
Cooling Capacity:60,000 BTU
Airflow Delivery:2,000 CFM
Zone 3: Mid-Atlantic & Lower Midwest
Balanced 4-season climate (VA, MD, PA, OH, IN, IL, MO, Pacific Northwest).500 Sq Ft Home
Cooling Tonnage:1.5 Tons
Cooling Capacity:18,000 BTU
Airflow Delivery:600 CFM
800 Sq Ft Home
Cooling Tonnage:1.5 Tons
Cooling Capacity:18,000 BTU
Airflow Delivery:600 CFM
1,000 Sq Ft Home
Cooling Tonnage:2 Tons
Cooling Capacity:24,000 BTU
Airflow Delivery:800 CFM
1,200 Sq Ft Home
Cooling Tonnage:2 Tons
Cooling Capacity:24,000 BTU
Airflow Delivery:800 CFM
1,500 Sq Ft Home
Cooling Tonnage:3 Tons
Cooling Capacity:36,000 BTU
Airflow Delivery:1,200 CFM
1,800 Sq Ft Home
Cooling Tonnage:3.5 Tons
Cooling Capacity:42,000 BTU
Airflow Delivery:1,400 CFM
2,000 Sq Ft Home
Cooling Tonnage:3.5 Tons
Cooling Capacity:42,000 BTU
Airflow Delivery:1,400 CFM
2,200 Sq Ft Home
Cooling Tonnage:4 Tons
Cooling Capacity:48,000 BTU
Airflow Delivery:1,600 CFM
2,500 Sq Ft Home
Cooling Tonnage:4.5 Tons
Cooling Capacity:54,000 BTU
Airflow Delivery:1,800 CFM
3,000 Sq Ft Home
Cooling Tonnage:5 Tons
Cooling Capacity:60,000 BTU
Airflow Delivery:2,000 CFM
3,500 Sq Ft Home
Cooling Tonnage:5 Tons
Cooling Capacity:60,000 BTU
Airflow Delivery:2,000 CFM
4,000 Sq Ft Home
Cooling Tonnage:5 Tons
Cooling Capacity:60,000 BTU
Airflow Delivery:2,000 CFM
Zone 4: Northeast & Northern Plains
Mild summers but harsh sub-freezing winters (NY, New England, MI, WI, MN, CO).500 Sq Ft Home
Cooling Tonnage:1.5 Tons
Cooling Capacity:18,000 BTU
Airflow Delivery:600 CFM
800 Sq Ft Home
Cooling Tonnage:1.5 Tons
Cooling Capacity:18,000 BTU
Airflow Delivery:600 CFM
1,000 Sq Ft Home
Cooling Tonnage:1.5 Tons
Cooling Capacity:18,000 BTU
Airflow Delivery:600 CFM
1,200 Sq Ft Home
Cooling Tonnage:2 Tons
Cooling Capacity:24,000 BTU
Airflow Delivery:800 CFM
1,500 Sq Ft Home
Cooling Tonnage:2.5 Tons
Cooling Capacity:30,000 BTU
Airflow Delivery:1,000 CFM
1,800 Sq Ft Home
Cooling Tonnage:3 Tons
Cooling Capacity:36,000 BTU
Airflow Delivery:1,200 CFM
2,000 Sq Ft Home
Cooling Tonnage:3.5 Tons
Cooling Capacity:42,000 BTU
Airflow Delivery:1,400 CFM
2,200 Sq Ft Home
Cooling Tonnage:3.5 Tons
Cooling Capacity:42,000 BTU
Airflow Delivery:1,400 CFM
2,500 Sq Ft Home
Cooling Tonnage:4 Tons
Cooling Capacity:48,000 BTU
Airflow Delivery:1,600 CFM
3,000 Sq Ft Home
Cooling Tonnage:5 Tons
Cooling Capacity:60,000 BTU
Airflow Delivery:2,000 CFM
3,500 Sq Ft Home
Cooling Tonnage:5 Tons
Cooling Capacity:60,000 BTU
Airflow Delivery:2,000 CFM
4,000 Sq Ft Home
Cooling Tonnage:5 Tons
Cooling Capacity:60,000 BTU
Airflow Delivery:2,000 CFM