If you have a ductless mini split air conditioning system, you will know that they are pretty reliable for the most. But even something as near flawless as a ductless mini split air conditioning system can see it’s final day and you would have to eventually buy a new one. HVAC technology is pretty advanced today, but they have yet to come up with some kind of HVAC technology that can make heating and air conditioning systems of any sort immortal! When it comes to your ductless mini split air conditioning system though, one major sign that it is on its last legs is when you hear a near constant rattling noise everytime the thermostat on the ductless mini split air conditioning system turns on. This rattling will go on more and more the closer it gets to breaking down completely. Of course when your ductless mini split air conditioning system finally does break down you could get it repaired and have the motor replaced by a certified heating and cooling specialist. However it really is not worth it. For a few bucks more than the cost of both the HVAC repair and the motor itself you can just go out and buy yourself a brand new ductless mini split air conditioning system unit for your home. But of course, that is entirely up to you. When you hear that rattle noise going on all the time, just be prepared that it’s lifespan is at the end. Ductless mini splits if on sale can be bought for four hundred dollars and some change. So look around first.