Inverters

Fox ESS 1K5-1P-HI

Name: Fox ESS 1K5-1P-HI
Brand: Fox ESS

5–10.5 kW · 2 versions · best for single phase homes adding a battery now or later

8.6Excellent#16 of 59 inverter series we rank · EnergyUpgrade Score out of 10

Why it scores 8.6.

Rated on 1K5-1P-HI 3.7–10.5 kW, its best home version. Each part comes from the datasheet with a published rule; anything not stated scores zero.

Efficiency
6.0 · 30%
Every point of efficiency is solar you keep, every day for 10+ years.
Rule: Maximum efficiency on the datasheet: 96% scores 0, 99% scores 10.
MPPTs for split roofs
10.0 · 20%
Each MPPT runs one roof face independently, so east and west panels don't drag each other down.
Rule: Number of MPPT trackers: 1 scores 0, 2 scores 5, 3 or more scores 10.
Heat tolerance
10.0 · 20%
Inverters on hot walls throttle or fail early. A higher operating limit means more headroom.
Rule: Highest operating temperature: 45°C scores 0, 60°C scores 10.
Room for more panels
10.0 · 15%
How much panel capacity the inverter accepts, so you can oversize for winter and cloudy days.
Rule: Maximum PV input divided by rated AC output: 1.2x scores 0, 1.5x or more scores 10. Rebate rules allow panels up to 133% of the inverter, so more than 150% adds little.
Weather sealing
9.0 · 15%
Most Australian inverters live outdoors.
Rule: IP66 or better scores 10, IP65 9, IP55 4, lower 0.

For 1K5-1P-HI 3.7–10.5 kW, the version we rate. 10 approved models · Australian datasheet

Same series in different sizes, finishes or generations. Check which version is on your quote.

1K5-1P-HI 3.7–10.5 kW
7–10.5 kW · the version we rate
8.6
Type: HybridPhase: Single phaseEfficiency: 97.8% Datasheet
1K5-1P-HI 5 kW
5 kW
6.9
Type: HybridPhase: Single phaseEfficiency: 97.1% Datasheet