Maximum heating power for large RVs

The 12-volt DC Suburban NT Series furnaces, offered in capacities from 30,000 to 40,000 BTUH, are examples of how powerful a compact ducted furnace can be. Cabinet size is the same on all models, providing a standardized size with four capacity options.

NT Series furnaces, with side or bottom duct options, are easy to install and make an ideal replacement for obsolete competitive furnaces.

Model Number       NT-30SP      NT-34SP     NT-40
BTUH Input                30,000         34,000       40,000
Height                        12 1/2"        12 1/2"       12 1/2"
Width                            12"               12"            12"
Depth                            23"               23"            23"
Voltage                      12 VDC          12 VDC       12 VDC
Amp. Draw                   4.5                 7.0             8.5 
Ship Wt.                     40 lbs.           40 lbs.         40 lbs.
Unit Wt.                      36 lbs.           36 lbs.         38 lbs.
Duct Outlet Size
Sides/Bottom            4" Round       4" Round      4" Round
Bottom                    10" x 3 1/4"   10" x 3 1/4" 10" x 3 1/4"
2456A P-40 Furnace