Go Power! ASW-3000-12-TS
#20 in Over 2,000 WFull review
For RVs that already have a converter or solar charging and want an inverter with a built-in transfer switch.
Amazon $941.57$941.57
2.0/5
For RVs that hardwire a 3,000 W inverter into a subpanel. Same hardware as the Cotek SP-3000-112.
- 3,000 WContinuous
- 6,000 WSurge
- 3.8 AIdle draw
- NoUL listed
- 2 yearsWarranty
Check price at Amazon$1,128.95
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Runs an RV air conditioner or several appliances
- Hardwires into a subpanel
- Powersave mode cuts idle draw to under 0.4 A
Cons
- No UL 458 listing by a named lab
- Two-year warranty
- Draws 3.8 A idle with powersave off
The Go Power! GP-ISW family
Every Go Power! GP-ISW model we rank, smallest first. Ratings compare each against its own size.
| Model | Continuous | Rating | Price |
|---|---|---|---|
| Go Power! GP-ISW700 | 700 W | 2.1/5 | $355.99 |
| Go Power! GP-ISW1000 | 1,000 W | 2.5/5 | $367.90 |
| Go Power! GP-ISW1500 | 1,500 W | 2.3/5 | $535 |
| Go Power! GP-ISW2000 | 2,000 W | 2.2/5 | $759.99 |
| Go Power! GP-ISW3000 (this one) | 3,000 W | 2.0/5 | $1,128.95 |
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | GP-ISW3000-12 |
|---|---|
| Output | |
| Type | Pure sine wave inverter |
| Continuous power | 3,000 W |
| Surge power | 6,000 W |
| DC input range | 10.5 to 16.5 V |
| Idle draw | 3.8 A (45.6 W) |
| Power-saving draw | 0.4 A |
| Peak efficiency | 90% |
| Connections | |
| AC outlets | 0 |
| GFCI outlets | No |
| Hardwire terminal | Yes |
| USB ports | None |
| Transfer switch | No |
| Parallel units | No |
| Control and build | |
| Remote | Optional extra |
| App | No |
| Display | No |
| Safety listing | No |
| Cooling | load-controlled fan |
| Dimensions | 442 x 255 x 158 mm (17.40 x 10.04 x 6.22 in) |
| Weight | 18.1 lb |
| Warranty | 2 years |
Alternatives in this size
Victron Phoenix 12/3000 120V
#21 in Over 2,000 WFull review
A heavy-duty 3,000 VA inverter for a large van, boat or cabin that has separate charging and shore-power switching. Most buyers are better served by a MultiPlus 12/3000, which adds the charger and transfer switch.
Amazon $862.79$862.79
Cotek SP-3000-112
#22 in Over 2,000 WFull review
For RVs and cabins that hardwire a 3,000 W inverter into a subpanel.
Amazon $1,113$1,113
Compare
Compare the Go Power! GP-ISW3000 with any other 12V inverter →
More from Go Power!: every Go Power! product ranked.