The Renogy PUH 3000W with Transfer Switch rates 4.0 among over 2,000 W 12V inverters; the ECO-WORTHY 3000W Inverter Charger rates 3.2 among inverter-chargers ones. The Renogy PUH 3000W with Transfer Switch costs $38.02 less ($461.97 vs $499.99).
A big inverter with automatic changeover for RVs and home backup that already have a separate charger. Renogy’s HF inverter-chargers add charging for more money.
Amazon $461.97A budget 3000 W inverter-charger for off-grid cabins and DIY RV builds that need a big charger. Specs come only from the Amazon listing.
Amazon $499.99Prices were last checked October 24, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
These two sit in different size classes (over 2,000 W and inverter-chargers), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Renogy PUH 3000W with Transfer Switch | ECO-WORTHY 3000W Inverter Charger |
|---|---|---|
| Overall rating | 4.0/5 | 3.2/5 |
| Value 30% | 77 $0.15 per continuous watt | 100 $0.17 per continuous watt |
| Idle draw 15% | 67 1.5 A idle (about 18 W) with nothing plugged in | 50 idle draw not published (neutral score used) |
| Safety listing 15% | 100 UL certified to UL 458 and CSA C22.2 No. 107.1-01 | 0 no UL 458 or UL 1741 listing stated |
| Warranty 15% | 0 1-year warranty | 0 1-year warranty |
| Features 15% | 95 remote included, app, transfer switch, hardwire terminal | 45 optional remote, lithium charge profile; no app |
| Efficiency 10% | 78 92% peak efficiency (maker rating) | 56 90% peak efficiency (maker rating) |
| Renogy PUH 3000W with Transfer Switch | ECO-WORTHY 3000W Inverter Charger | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter | Pure sine wave inverter-charger |
| Continuous power | 3,000 W | 3,000 W |
| Surge power | 6,000 W for 2 s | 6,000 W |
| DC input range | 11 to 15.5 V | - |
| Idle draw | 1.5 A (18 W) | - |
| Peak efficiency | 92% | 90% |
| Connections | ||
| AC outlets | 3 | - |
| GFCI outlets | Yes | - |
| Hardwire terminal | Yes | - |
| USB ports | 1 | - |
| Transfer switch | Yes | Yes |
| Charger | - | 100 A |
| Lithium charge profile | - | Yes |
| Parallel units | No | No |
| Control and build | ||
| Remote | Included | Optional extra |
| App | Built in | No |
| Display | - | No |
| Safety listing | UL certified to UL 458 and CSA C22.2 No. 107.1-01 | No |
| Cooling | fan | - |
| Dimensions | 19.2 x 10.4 x 3.8 in | 17.0 x 11.3 x 4.3 in |
| Weight | 14.8 lb | 16.3 lb |
| Warranty | 1 year | 1 year |
