Before I put it into operation, I checked if there was thermal paste between the power ICs and the heatsinks, and it was fine. I use it to power a ZVS induction heater, connected at its output with a capacitor bank of 63V, 60,000 μF (the capacitors are initially charged through a 30 Ohm, 30 Watts resistor to avoid a large initial charging current – then the resistor is taken "out"). At 15-16 Amps, the output voltage drops to 23.6 Volts (I could raise it to 24 Volts, but I didn't), and the temperature in the power supply case near one heatsink after two hours of continuous operation was 49 degrees Celsius – much lower in the rest of the case. The fan runs continuously, which doesn't bother me. In conclusion, for the money you pay, I think it's a good purchase, and time will tell whether it will continue to perform just as well.