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solarsparkie
we use and sell danfoss , good old fashioned engineering they weigh in at 35kg and arnt small , of course capacitors have mtbf but having said that heat is also the enemy of electrical components so efficiency and cooling will be an issue with any inverter, when the going gets tough every 10 degrees of heat will reduce expected life by 50% . If your young enough probably worth starting a repair business up 2021