Enphase IQ8M
#6 in One panelFull review
A good match for 350 to 450 W panels on an Enphase system. Check the IQ8MC price first, since it takes more current for less.
Shop Solar Kits $186.05 Renewable Outdoors $185 US Solar Supplier $202.78$185
The Enphase IQ8M is the better microinverter overall, rated 3.8 to 3.6. The Enphase IQ8M leads on efficiency. The Enphase IQ8M costs $22 less ($185 vs $207).
Enphase IQ8A
#9 in One panelFull review
For 400 to 500 W panels on an Enphase system, but the IQ8AC replaces it with more input current for less money.
GoGreenSolar $207 Renewable Outdoors $221 Shop Solar Kits $223$207
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Enphase IQ8M for efficiency (97.5% CEC weighted efficiency vs 97% CEC weighted efficiency).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every one panel microinverter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Enphase IQ8M | Enphase IQ8A |
|---|---|---|
| Overall rating | 3.8/5 | 3.6/5 |
| Value 25% | 4 $0.57 per watt ($185, 325 W) | 1 $0.59 per watt ($207, 349 W) |
| Grid listing 20% | 100 UL 1741 listed, meets rapid shutdown | 100 UL 1741 listed, meets rapid shutdown |
| Efficiency 15% | 100 97.5% CEC weighted efficiency | 80 97% CEC weighted efficiency |
| Input current 15% | 25 12 A per input | 25 12 A per input |
| Warranty 25% | 100 25-year warranty | 100 25-year warranty |
Specifications
| Enphase IQ8M | Enphase IQ8A | |
|---|---|---|
| Output | ||
| Panel inputs | 1 | 1 |
| AC output | 325 W | 349 W |
| Grid voltage | 240 V split phase | 240 V split phase |
| CEC efficiency | 97.5% | 97% |
| Peak efficiency | 97.8% | 97.7% |
| Panel input | ||
| Largest panel | 460 W | 500 W |
| Current per input | 12 A | 12 A |
| MPPT range | 30 to 45 V | 32 to 45 V |
| Listing and build | ||
| UL 1741 | Yes | Yes |
| Rapid shutdown | Yes | Yes |
| Monitoring | gateway (sold separately) | gateway (sold separately) |
| Enclosure | NEMA 6 | NEMA 6 |
| Weight | 2.4 lb | 2.4 lb |
| Warranty | 25 years | 25 years |
| Released | 2021-12 | 2021-12 |