They then wreck a brand new AC unit by dumping a little too much liquid in
Buying an HVAC system is so expensive. After spending that amount of money, it is only natural that you will not want to spend anymore on the HVAC installation. Setting up a HVAC device is more than just plugging it in. Some HVAC systems are actually really complicated and particular about the set up. Leave it to the professionals. The last thing you want to do is mess up this already expensive investment. Most people who do their own HVAC installation end up wrecking the system in the process. They sometimes install it wrong so it does not run as efficient. So every month they pay higher energy bills. Overtime those high energy bills would have paid for the professional HVAC installation and even some HVAC maintenance appointments. Sometimes the HVAC is installed so wrong that frequent HVAC repairs pop up and the HVAC system sees a decreased lifespan. Something as small as refrigerant can really affect an air conditioner unit. Did you know that the coolant needs to be perfect on the initial installation? If the coolant is off, the AC will never work the same again. The air conditioner will not work as efficiently, need more AC repairs and have half the lifespan if the coolant is off on the first run through. A homeowner is not aware of this and will frequently mess it up. They then wreck a brand new AC unit by dumping a little too much liquid in. After it happens too, there is nothing a licensed AC contractor can do to help it.