Hoymiles HMS-1800-4T-NA
#2 in Four panelFull review
A low cost way to run four 360 to 600 W panels from one inverter, priced below the smaller HMS-1600.
Self2Solar $369$369
3.6/5
A four panel unit for 300 to 450 W panels at a low price per watt, but check that your utility accepts UL 1741 SA and price the warranty extension.
- 1,200 WAC output
- 4Panels
- YesUL 1741
- 10 yearsWarranty
Check price at APsystems$295
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- One unit runs four panels, so fewer inverters to mount and wire
- Low price per watt
- Meets rapid shutdown
Cons
- Only a 10 year standard warranty; 25 years costs extra
- Listed to UL 1741 SA but not the newer SB, which some utilities now require
- Monitoring needs an APsystems ECU gateway, sold separately
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its panel count. How we rank explains each one.
Specifications
| Model number | QS1 |
|---|---|
| Output | |
| Panel inputs | 4 |
| AC output | 1,200 W |
| Grid voltage | 240 V split phase or 208 V |
| CEC efficiency | 96.5% |
| Peak efficiency | 96.5% |
| Panel input | |
| Largest panel | 525 W |
| Current per input | 14 A |
| MPPT range | 22 to 48 V |
| Listing and build | |
| UL 1741 | Yes |
| Rapid shutdown | Yes |
| Monitoring | gateway (sold separately) |
| Enclosure | NEMA 6 |
| Weight | 9.9 lb |
| Warranty | 10 years |
Alternatives in this panel count
Hoymiles HMS-1600-4T-NA
#3 in Four panelFull review
For four panels of 320 to 540 W, but the HMS-1800 costs less for more output, so buy this only if it is cheaper where you shop.
Self2Solar $379$379
Hoymiles HM-1500NT
#4 in Four panelFull review
An older four panel design for 300 to 450 W panels. The newer HMS-1800 and HMS-2000 cost the same or less and take more current.
Self2Solar $387.50$387.50
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