Hoymiles HMS-800W-2T
(17 reviews)
The Hoymiles HMS-800W-2T microinverter feeds 800 W into your home from 2 panels, with built-in Wi-Fi and the know-how of the world's biggest microinverter maker.
Characteristics
- Power: 800 W (800 VA), 230 V output
- Solar input: 2 x 540 Wp max, 2 independent MPPT
- Efficiency: 96.7% (CEC), 99.8% MPPT
- Connectivity: Built-in Wi-Fi, no DTU, IP67
- World's number 1 microinverter maker, 12-year warranty
Detailed overview: Hoymiles HM-800 / HMS-800W-2T solar microinverter
The Hoymiles HMS-800W-2T is an 800 W solar microinverter built for balcony solar systems. It mounts directly behind 2 PV panels, converts their DC output into 230 V AC, and feeds it into the home through a standard household socket, with no work needed on the fuse box.
Unlike some recent rivals, the HMS-800W-2T stays a pure microinverter: it stores nothing. Any energy produced and not used at that moment goes straight back to the grid. That is a deliberate choice for simplicity and reliability, backed by Hoymiles, the world's largest microinverter manufacturer, rather than a promise of expandable storage like some hybrid hubs offer.
| Output power | 800 W (800 VA), 230 V / 50 Hz |
| Inputs | 2 independent MPPT, up to 540 Wp each (1080 Wp total) |
| Efficiency | 96.7% (CEC), 99.8% at MPPT level |
| Connectivity | Built-in Wi-Fi, S-Miles app, no DTU box required |
| Ruggedness | IP67, -40 °F to 149 °F (-40 °C to +65 °C), fanless |
| Dimensions / weight | 261 x 180 x 35 mm, 3.2 kg |
| Warranty | 12 years (extendable up to 25 years after registration) |
The two MPPT inputs work fully independently: if one panel is shaded or poorly angled, the other keeps producing at its own pace, so the whole system is not dragged down. The fanless IP67 casing takes rain and temperature swings in stride for a permanent outdoor install. On the monitoring side, the built-in industrial Wi-Fi removes the need for an external DTU-Lite box, unlike the older Hoymiles HM-800: the S-Miles Cloud app shows real-time production, panel by panel.
The limit is an honest one worth knowing before buying: without a battery, this microinverter only does direct self-consumption. Energy produced while the home is empty, on a weekday, for instance, cannot be recovered in the evening. That is the trade-off of a device built for simplicity and reliability rather than expandable built-in storage.
Certified for grid feed-in (VDE-AR-N 4105, EN 50549-1, IEC/EN 62109), the HMS-800W-2T suits most balcony kits sold across Europe. It is a sound pick for anyone who values the track record of an established industry leader over a storage feature they can, if needed, add through another route.
Full specifications
Detailed characteristics (EAN: 0768563818981)
Power and protection
| Output power?Maximum power delivered (for storages with a 230 V output). | 800 W |
|---|
Solar section
| MPPT controllers?Number of built-in MPPT solar controllers (lets you connect panels facing different directions). | 2 |
|---|---|
| Max solar input?Maximum connectable PV power. | 1080 W |
| Micro-inverter?Power of the inverter that feeds energy back into the home grid. | 800 W |
Connectivity
| Wi-Fi?Remote control and updates over Wi-Fi. | Yes |
|---|
Durability and format
| Ingress protection?Water and dust resistance (IP rating). | IP67 |
|---|---|
| Weight?Weight of the battery. | 7.1 lb (3.2 kg) |
| Dimensions (L × W × H)?Length × width × height, in millimetres. | 10.3 × 7.1 × 1.4 in (261 × 180 × 35 mm) |
Availability and warranty
| Warranty?Length of the manufacturer's warranty. | 12 years |
|---|
User manual / Instructions for use (PDF)
Comparison
How does the Hoymiles HMS-800W-2T stack up against other balcony microinverters, especially for searches like "HMS-800W-2T vs EcoFlow Stream" or "Hoymiles vs Zendure"? Here is how it compares with 3 direct alternatives: the Zendure SolarFlow 800 and the EcoFlow Stream Microinverter, both hybrid with a storage option, and the APsystems EZ1-M 800W, another pure microinverter like the Hoymiles.
| Criterion | Hoymiles HMS-800W-2T | Zendure SolarFlow 800 | EcoFlow Stream Microinverter | APsystems EZ1-M 800W |
|---|---|---|---|---|
| Output power | 800 W (800 VA) | 800 W | 800 W | 800 W (799 VA) |
| MPPT inputs | 2, up to 540 Wp each | 2, 1200 W total | 2, 1200 W total | 2, up to 730 Wp each |
| Battery storage | None, pure microinverter | Yes, expandable to 11.52 kWh | Yes, via the Stream ecosystem | None, pure microinverter |
| Ingress rating | IP67 | IP65 | IP67 | IP67 |
| Efficiency (CEC) | 96.7% | 96% (storage mode) | 96.7% (claimed) | 97.3% |
| Warranty | 12 years, extendable to 25 | Not stated | 10 years | 12 years |
| Observed price | ≈ $226.90 | ≈ $172.53 | ≈ $160.95 | ≈ $203.74 |
In short, the Zendure SolarFlow 800 and the EcoFlow Stream win on one specific point: the ability to store unused energy through their respective battery ecosystems, a real plus for evening self-consumption. But for anyone after a reliable, thoroughly proven device backed by the world leader in the field with one of the best warranties around, the Hoymiles HMS-800W-2T remains a safe bet, with built-in Wi-Fi and no extra box to buy, unlike the older HM-800. Against the closely-matched APsystems EZ1-M, Hoymiles stands out for simpler setup (no Bluetooth to configure alongside Wi-Fi) and the reputation of a brand far more established across the European market.
Related video
Video: Deep Dive: Exploring Hoymiles HMS Micro Inverters & S-Miles Remote Monitoring Capabilities - Published on 18/04/2024
Our tester's review: Julien De Jurquet
On paper, the HMS-800W-2T is nothing exotic: two MC4 connectors for the panels, an AC cable for the wall socket, and that is it. That is exactly what made setup on our test balcony so easy: under twenty minutes between unboxing and seeing the first data in the S-Miles app, with no need to order a separate DTU box as with the older HM-800. The built-in Wi-Fi connects straight to the home router and reports production panel by panel, handy for spotting a badly angled or shaded module straight away. In use, the claimed efficiency roughly holds up, even under a hazy sky, and the casing, genuinely tough-looking with its aluminium heatsink, shrugged off the rain. The real catch, and it is worth being upfront about it, is the total lack of storage: any energy produced and not used on the spot goes straight to the grid, with no chance of getting it back in the evening, unlike hybrid solutions. If you want a simple, rugged device backed by a brand that has been established in this market for years, the HMS-800W-2T gets the job done without frills.
In-depth review Hoymiles HMS-800W-2T: Our Full Review 4.0/5 Read our full review → Efficiency 4.0 Portability and size not measured Weather resistance not measured Output ports not measured Capacity and expansion not measured Solar input and MPPT 4.2 Control and smart features 3.6 Installation and compliance 4.3 Build and endurance 4.1 Battery compatibility not measured Safety and protections not measuredFrequently asked questions: Hoymiles HM-800 / HMS-800W-2T solar microinverter
Yes, and that is actually its only mode of operation: it is a pure microinverter with no storage option at all. Any energy produced and not used right away goes straight to the grid, unlike hybrid hubs such as Zendure or EcoFlow.
The older HM-800 has no built-in Wi-Fi: you need to add an external DTU-Lite box to track production. The HMS-800W-2T (S series) has Wi-Fi built in and connects straight to the S-Miles app, with no extra accessory needed.
Two, each on its own independent MPPT tracker, with a common panel power of 320 to 540 Wp, up to 1080 Wp in total. A shaded panel does not drag down the output of the other.
Yes, its IP67 casing protects it against rain and dust, and it runs from -40 °F to 149 °F (-40 °C to +65 °C) with no fan. It is built to be mounted behind the panels, outdoors, for good.
No, not with the HMS-800W-2T: its built-in Wi-Fi module connects directly to the home router and sends data to the S-Miles Cloud app, panel by panel.
Yes, like any grid-connected solar installation, though the paperwork depends on where you live: registration in the Marktstammdatenregister in Germany (no separate grid-operator notification needed since the Solarpaket I reform), a declaration to Enedis in France (plus a Consuel safety certificate if wired into a dedicated circuit), a communication to the local distributor under CEI 0-21 in Italy, and registration under the RD 244/2019 self-consumption regime in Spain. Check the current rules where you live before commissioning it.
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Published on 02/09/2026