You think anything to do with HVAC is really complex. This is probably because so much information is available on the subject.
If you are having issues with your HVAC, take a look around the house prior to calling a contractor. This information will help the repairman determine where the problem is and how to fix it.
Know what work you want done before you hire a contractor. It will be difficult for an HVAC contractor to provide you a price estimate on the phone if they have not seen your current system. It will be way more difficult for him to assist you can’t figure out what they need to do.
Clean your fan and coils come spring. Clean the outside of your external condenser unit regularly.
Clean any debris that accumulates on your condenser unit. You don’t know when things are going to pile up, like right after it’s windy or rains, and that can throw a wrench in your system. It could overheat and cause a disaster with your system to malfunction by overheating.
Turn the power off so you don’t get hurt or break something. Then, take the grill off, pull the blades out, and begin cleaning the unit and them gently.
Don’t get grass clippings on your outdoor condenser. Aim your grass clippings in the other direction. This also applies when you are taking care of the leaves in the yard.
Your HVAC units might suffer when your trees lose their leaves. Make sure the unit’s fan grill is cleaned often during the fall. The fan needs unobstructed air flow, and if it gets blocked, you’ll have a lot of headaches eventually.
Lubricate the oil ports on your condenser once a year. You can easily find the ports as they have a rubber or metal cap covering them. Use a lightweight, and put 10 drops or fewer in each port, putting 10 drops in each port.