Do my Central Air unit hold to be tested or primed or inspected previously I turn them on for the season? Just moved into a new house and am curious in the...

Just moved into a new house and am curious in the order of how to run a central nouns unit that hasn't be turned on for about 9 months. Do I stipulation to do anything to them before I turn them on?
Ceiling devotee is making scrape roar?
Answers:    if the outdoor element hasnt had power to it over the winter you should turn the power on to it for a few hours earlier you run it. this will ensure any liquid refrigerant contained by the compressor is evaporated. Check to make sure nought is blocking the coils (leaves and such). Thats about itt for outside. Inside check the atmosphere filter clean or replace it. afterwards enjoy.
Toro Personal Pace mower -- replace blade switch?
You don't enjoy to rub it in our face that you have more than one nouns unit, dude.
Our grill and nouns section go out. Its...