Suburban NT-20SEQ (2504ABK)
For a camper van or small trailer with one open room, where battery drain matters more than total heat.
Amazon $839.91$839.91
1.8/5
A like-for-like replacement for an older 20,000 BTU Suburban SF furnace in a small trailer.
- 20,000 BTUInput
- 7 A12 V draw
- 300 CFMAirflow
- DuctedDischarge
Check price at Amazon$951.18
Price checked November 3, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Smallest SF-series size, 7.5 in tall for tight cabinet spaces
- Draws about 7 A on 12 V
Cons
- Priced at about $48 per 1,000 BTU
- Sold by third-party sellers on Amazon
The Suburban SF-Q family
Every Suburban SF-Q model we rank, smallest first. Ratings compare each against its own size.
| Model | Input | Rating | Price |
|---|---|---|---|
| Suburban SF-20FQ (2551A) (this one) | 20,000 BTU | 1.8/5 | $951.18 |
| Suburban SF-30FQ (2558A) | 30,000 BTU | 2.9/5 | $965.84 |
| Suburban SF-30Q (2559A) | 30,000 BTU | 2.9/5 | $932.57 |
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.
Specifications
| Model number | 2551A |
|---|---|
| Heat and power | |
| Input capacity | 20,000 BTU |
| 12 V amp draw | 7 A |
| Airflow | 300 CFM |
| Discharge | Ducted |
| Fit | |
| Height | 7.5 in |
| Weight | 29 lb |
Alternatives in this size
Fogatti RFS20A0B 20,000 BTU
For a van, truck camper or small trailer where low battery draw outweighs raw heat.
Amazon $899.99$899.99
Compare
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