NMFC 122875 - ETS Heaters with Fans | Class by Density

Note 122876: NOTE-Applies only on air or hydronic heaters or furnaces for permanent installation that collect and store heat by means of ceramic thermal energy storage bricks.

To find the correct freight class for your shipment:

1. Measure the packaged unit’s length, width, height, and weight, then calculate pcf; include the mass of ceramic storage bricks, pallet, and crate to avoid under-reporting density.
2. Pack to Item 170 standards: block and brace the brick core, secure blowers and thermostats, and use foam or honeycomb to isolate fans; mark orientation (fan side up) on the crate.
3. Label the BOL clearly: “Electric Thermal Energy Storage Heater — NMFC 122875, density-based, packaged,” and note accessories or hydronic connections shipped inside the crate.
4. Validate density with an example check: a 48×40×36 in crate at 980 lb equals ~17.7 pcf; choose the corresponding density bracket before tendering to the carrier.

Note: All classifications are subject to Item 170. Verify with official NMFC publications for the most current requirements.

• Right-size packaging to improve density and typically lower the freight class, reducing LTL rates for heavy brick-core heaters.
• Accurate density math and Item 170-compliant crating cut reclass, rebill, and delay risk—clean invoices and fewer disputes.
• Non-hazardous status broadens carrier options and speeds scheduling for residential or commercial delivery sites.
• Machinery Group alignment supports accessorial planning (liftgate, appointments), minimizing handling damage and chargebacks.