Suburban NT-30SP

Last updated: November 3, 2026

Suburban NT-30SP

3.5/5#1 of 11 in 25,000 to 30,000 BTU RV furnaces
3.5

For a replacement where the old NT-series furnace sat in a deep cabinet and low amp draw matters.

30,000 BTUInput
5.5 A12 V draw
345 CFMAirflow
DuctedDischarge

Check price at Amazon$697.65

Price checked November 3, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros

Lowest amp draw per BTU of the 30,000 BTU furnaces at 5.5 A
Highest rated airflow of the Suburban 30,000 BTU furnaces at 345 CFM

Cons

12.5 in tall, so it needs a tall cabinet rather than the low SF space
Older NT design; no warranty on the listing

How it scores

The rating comes from 3 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.

Value $23.25 per 1,000 BTU ($697.65, 30,000 BTU)80
Power draw 5.5 A running, 0.2 A per 1,000 BTU72
Warranty warranty not published, scored as none0

Specifications

Heat and power
Model number	NT-30SP
Input capacity	30,000 BTU
12 V amp draw	5.5 A
Airflow	345 CFM
Discharge	Ducted
Fit
Height	12.5 in

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