I had a 1500 watt Cotek HF inverter that was very good with inductive loads. It would grunt and complain for a second when the fridge kicked on, you could hear the FETs buzz...sort of like a hissing sound. But it always recovered and kept on going. Now I'm using a Growatt LF AIO. That big heavy transformer makes it a real pain to mount on the all but it runs the whole house. Even the 1hp well pump is no problem. I understand the Growatt HF inverters in parallel for 120/240 split phase also handle the inductive surge loads very well.
Modified sinewave is old technology and you don't want to consider it.
Absolutely concur with this.
My take is that if you are going to be pushing your inverter near it’s rated limits and you have inductive loads, LF is probably the better option.
But if you greatly overdubbing the inverter capacity for actual demand and have a per-leg rating that easily exceeds the surge of any inductive load, there is little/no difference (other than the lower cost of HF inverters).
The Schneider Conext SW 4048 can deliver 3800W continuous and up to 7000W for 5 seconds. Maximum imbalance is not clearly spelled out but is almost certainly under 100% (cannot deliver only 7000W of peak power to a single leg). The 41A peak current would translate to no more than 4920W to a single leg regardless of whether 100% imbalance is supported or not.
The Conext SW 4048 costs over $1700.
Contrast that with this dual-HF alternative SRNE inverter rebadged by Y&H costing the same or less:
https://www.amazon.com/Inverter-Spl...9Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=
5kW per leg sustained and 10kW per leg surge capability (with no issue supporting 100% imbalance).
The Conext SW4048 weighs 62 lbs while the Y&H 10K weighs 46lbs.
Don’t get me wrong - I realize a Schneider inverter is an entirely different class of quality and reliability than an SRNE inverter rebadged by Y&H so a large portion of this ‘equal’ pricing needs to be allocated to that and for the same price, the Conext SW4048 is probably the better buy.
But this illustrates my point: the dual-HF option can surge to more than twice the power of the Schneider LF alternative and can also sustain 232% as much power.
If you need more than what the Conext SW 4048 can deliver, you will need to pay more for it.
The Conext XW 6048 costs about double the price of the Conext SW 4048 and weighs 126lbs.
The XW 6048 can deliver 6000W continuous (still less than the Y&H) and can surge to 12,000W for 15 seconds (still less than the Y&H) but supports a L-N surge current of up to 105A = 12,600W which is 126% of the SRNE dual-HF peak current capability.
But for that you will pay about twice as much and have a LF inverter weighing almost 3 times as much.