Suburban SF-30Q (2559A)
The lowest-priced new Suburban 30,000 BTU furnace on Amazon, when the original was a Q-series.
Amazon $932.57$932.57
2.9/5
The straight swap for the many trailers that came with a 30,000 BTU Suburban SF furnace.
- 30,000 BTUInput
- 7 A12 V draw
- 300 CFMAirflow
- DuctedDischarge
Check price at Amazon$965.84
Price checked November 3, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Most common Suburban size for 24 to 33 ft trailers
- 7 A draw on 12 V
Cons
- Costs $32 per 1,000 BTU, more than the lower-priced Fogatti and KingRVer units
- No published warranty on the listing
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-30FQ (2558A) (this one) | 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 | 2558A |
|---|---|
| Heat and power | |
| Input capacity | 30,000 BTU |
| 12 V amp draw | 7 A |
| Airflow | 300 CFM |
| Discharge | Ducted |
| Fit | |
| Height | 7.5 in |
Alternatives in this size
Dometic DFMD30111
For a like-for-like replacement of the older Dometic medium furnace in a 30 ft trailer.
Amazon $1,299.99$1,299.99
$1,272.29
Compare
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