Review on 💪 Enhanced Performance Heavy-Duty Modified Sine Wave Inverter (3000-watts) by Mike Bigglesworth

After testing friends who had this but older model I bought it to run a 1/3hp swamp cooler motor which worked really well. New model I can say HD but it's just a Chinese built piece of junk like cargo ports. I found the difference for HEAVY Duty is that the inverters are either high frequency or low frequency. Most manufacturers have gone the cheap high frequency route, but that doesn't work when you're looking at high inductive loads. I can run my swamp cooler with a borrowed old 1000 watt inverter that weighs about 12 pounds but not with the new power which weighs about 7-9 pounds. explanation below. EXPLANATION OF INVERSION METHODS High Frequency (HF) Inverters The vast majority of inverters available on the retail market are high frequency inverters. They are generally cheaper, take up less space and are less resistant to industrial stresses. HF inverters have twice as many components and use several smaller transformers. They are suitable for a variety of applications such as battery chargers for tools, small appliances, audio/video and computers, but have reduced capacity when subjected to long, high impulse loads such as pumps, motors and some high torque tools. Low Frequency (LF) Inverters Our UL Listed Low Frequency Inverters and Inverter/Chargers are the pinnacle of electrical reliability. A solid iron core transformer is able to effectively absorb impulse loads due to the "flywheel effect" inherent in the physical amount of iron in the transformer. LF inverters feature larger, more reliable field effect transistors (FETs) that can operate with less heat, in part due to the lower switching frequency required to generate AC power. These inverters offer extensive features including the option to connect additional external GFCI outputs, input multiple DC voltages, provide regulated dual output voltages (120/240 VAC), and integrate appropriate chemical chargers and shore power transfer relays. Expensive Cons Does not work well with high impulse loads such as high torque pumps and tools LOW FREQUENCY Pros Works well with high impulse loads Runs colder