Freight Class for HVAC Equipment
Crated HVAC equipment usually rates freight class 92.5 to 125. A Trane 3-ton condenser, crated at 38 × 30.1 × 33 inches and 183 lb, measures about 8.4 lb/ft³, class 100; the 5-ton model about 7.4 lb/ft³, class 125; a packaged heat pump about 11.7 lb/ft³, class 92.5. Factory-charged units are exempt from hazmat rules within the 49 CFR 173.307 limits, but they must ship upright.
Crated sizes and weights
Trane publishes crated sizes for its equipment. A 3-ton 4TTR4 condenser is crated at 38 × 30.1 × 33 inches and ships at 183 lb, about 8.4 lb/ft³, class 100. The 5-ton model is crated at 42.4 × 35.1 × 38.7 inches and 246 lb, about 7.4 lb/ft³, class 125: bigger units are mostly coil and fan space.
A 3-ton packaged heat pump, with everything in one cabinet, is denser: 52¾ × 25 13/16 × 38 inches and 349 lb, about 11.7 lb/ft³, class 92.5. Trane's 80,000 BTU gas furnace ships in a 41¾ × 19½ × 30½ inch crate at 139 lb, about 9.7 lb/ft³, class 100.
Worked examples
Crated sizes and shipping weights come from Trane's product data sheets.
3-ton condenser — class 100
Trane 4TTR4036 crated: 38 × 30.1 × 33 in, 183 lb.
38 × 30.1 × 33 = 37,745 in³ ÷ 1,728 = 21.8 ft³. Density = 183 lb ÷ 21.8 ft³.
8.4 lb/ft³ → class 100.
5-ton condenser — class 125
Trane 4TTR4060 crated: 42.4 × 35.1 × 38.7 in, 246 lb.
42.4 × 35.1 × 38.7 = 57,595 in³ ÷ 1,728 = 33.3 ft³. Density = 246 lb ÷ 33.3 ft³.
7.4 lb/ft³ → class 125.
Packaged heat pump — class 92.5
Trane J4PH4036 crated: 52¾ × 25 13/16 × 38 in, 349 lb.
52.75 × 25.81 × 38 = 51,741 in³ ÷ 1,728 = 29.9 ft³. Density = 349 lb ÷ 29.9 ft³.
11.7 lb/ft³ → class 92.5.
Refrigerant: the hazmat exception
Air conditioners are shipped with refrigerant inside. Under 49 CFR 173.307, refrigerating machines, including air conditioners, are not subject to the hazmat rules if they hold 12 kg (25 lb) or less of a non-flammable, non-toxic gas, or, except by air or vessel, 20 kg (44 lb) or less of a Group A1 refrigerant or a Group A2L gas.
A residential split system is far below those limits. Trane's 4TTR4 condensers come with a factory R-410A charge of 4 lb 8 oz to 7 lb 10 oz, so they ship as ordinary freight.
Keep it upright
Goodman's installation manual says to always keep the unit upright, because laying it on its side or top may damage it, and that shipping damage is the carrier's responsibility to investigate. Mark crates "this side up" and check them on delivery.
Inspect before signing: bent fins, a crushed crate corner or oil on the base can mean internal damage. Note it on the delivery receipt, because concealed damage is much harder to claim later.
Check your HVAC unit
Enter the crate's size and the shipping weight. Bigger condensers rate higher because they hold more empty coil and fan space.
Density-based estimate. Some commodities carry a fixed NMFC class — check our freight class by commodity pages.
Estimated Freight Class
Density
11.01
lb/ft³
Volume
53.33
ft³
Weight
587
lb
10–12 lb/ft³ → Class 92.5
NMFC density scale (Docket 2025-1, effective July 19, 2025)
Free PDF includes a watermark. Pro removes it & adds your brand.
Estimates only — verify freight class/NMFC and chargeable weight with your carrier.
Uses the 13-tier NMFC density scale (Docket 2025-1). See the full freight class chart.
Frequently asked questions
What freight class is HVAC equipment?
Usually class 92.5 to 125. Crated condensers measure about 7 to 8.5 lb/ft³ (class 100 to 125), packaged units about 11.7 lb/ft³ (class 92.5), and gas furnaces about 9.7 lb/ft³ (class 100).
Is an air conditioner hazmat because of the refrigerant?
Usually not. 49 CFR 173.307 exempts air conditioners with 25 lb or less of non-flammable, non-toxic refrigerant, or up to 44 lb of a Group A1 or A2L refrigerant except by air or vessel. Trane's 4TTR4 units hold 4.5 to 7.6 lb of R-410A.
Can an AC condenser be shipped on its side?
No. Goodman's manual says to always keep the unit upright, because laying it on its side or top may damage it.
How much does a crated furnace weigh?
Trane's 80,000 BTU upflow gas furnace ships at 139 lb in a 41¾ × 19½ × 30½ inch crate. Goodman's 80% AFUE furnaces ship at 86 to 132 lb, depending on the model.