Suburban SF-30FQ (2558A)
The straight swap for the many trailers that came with a 30,000 BTU Suburban SF furnace.
Amazon $966.82$966.82
30,000 BTU7 A300 CFM
2.5/5
A like-for-like replacement for a 25,000 BTU Suburban SF furnace in a mid-size trailer.
- 25,000 BTUInput
- 7 A12 V draw
- 300 CFMAirflow
- DuctedDischarge
Check price at Amazon$913.73
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Middle SF size for trailers that need more than 20,000 BTU but not 30,000
- Same 7 A draw as the 20,000 BTU model, so more heat per amp
Cons
- Listing gives no warranty or weight
- Stock on Amazon is scarce
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) | 20,000 BTU | 1.8/5 | $951.18 |
| Suburban SF-25Q (2556A) (this one) | 25,000 BTU | 2.5/5 | $913.73 |
| Suburban SF-30FQ (2558A) | 30,000 BTU | 2.9/5 | $966.82 |
| 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 | 2556A |
|---|---|
| Heat and power | |
| Input capacity | 25,000 BTU |
| 12 V amp draw | 7 A |
| Airflow | 300 CFM |
| Discharge | Ducted |
| Fit | |
| Height | 7.5 in |
Alternatives in this size
$1,272.29
30,000 BTU
$1,187.37
25,000 BTU7.5 A
Compare
Compare the Suburban SF-25Q (2556A) with any other RV furnace →
More from Suburban: every Suburban product ranked.