Don't even think about powering your off grid home with one of those low budget Chinese made, high frequency, transformerless inverters They're not only short lived and offer a weak peak power capacity when compared to conventional, off grid, low frequency solar inverter systems, they can also be dangerous.

You'd be lucky to get even two years of service from these overpriced high frequency off grid inverters, especially when powering high inductance loads like full sized refrigerators, large power tools, portable AC units, motors or large microwave ovens.

The reason for this is that all these high frequency inverters lack a very critical component. That critical component is an iron core, copper wound low frequency, output transformer. Without an output transformer to act as a buffer to absorb electrical surges provided by the “Flywheel Effect” inherent in the physical amount of a transformer’s iron, these surges and damaging reverse voltage spikes must be handled directly by the inverter’s MOSFET transistors, essential shortening their life.

As demonstrated by many of these affiliate product hucksters on YouTube, you might be able to start and run some high surge loads when these solar light duty, off grid inverters are new, but every time you fire up one of those inductive loads, you're shortening the life of the MOSFETs in these off grid inverters.

High frequency inverters run much hotter than low frequency, transformerbased solar generators which makes the low cost, off spec, Chinese made components such as capacitors, diodes, resistors and ICs that are used in the cheap inverters that are used in these solar generators, far more prone to early failure.

Another major consideration with these high frequency, transformerless inverters is safety. All it takes is for one of their MOSFETs in the inverter's HBridge circuit to short to ground or the waveform monitoring circuitry to fail, and these units will can dangerous, high voltage, high amperage DC current straight to your connected AC loads which will not only damage most AC appliances but can also set those AC appliances on fire.

Another consideration that is never mentioned by those youtube, solar inverter salesmen, is that the vast majority of these solar generators are nonrepairable. After the warranty runs out, you're not going to be able to ship these units back to the manufacturer in China and have them repair them. And at a typical shop rate of $125 per hour here in the US, with no schematic and limited parts availability, it won't makes economic sense to even attempt to repair one of these units.

Once the FETs have fried and have burned a good portion of the inverter's PCB, (And trust me, sooner rather than later, they will fry.) they basically become a brick. A far better alternative is to invest a little more money and purchase a low frequency, transformer based inverter charger and a set of LFP batteries and build your own real off grid solar system.

Low frequency transformer based inverter chargers last many years longer than these toy high frequency inverters, and can easily power high surge loads without being damaged and without damaging your appliances. That's why the big name brand inverter manufacturers like Schneider Electric, Outback Power, Sigineer Power, Victron Energy and others, all use a low frequency topology in their offerings.