There can be multiple causes contributing to why your AC unit may not be blowing cold air. Thankfully, most are simple fixes if performed by a qualified HVAC service technician. Here are some factors that can contribute to your AC not cooling properly.
Why is my air conditioner not blowing cold air?
● Low refrigerant levels
● Dirty coil
● Dirty air filter
● Clogged drain
● Bad thermostat
Low refrigerant levels
It’s important to make sure that your AC has the correct refrigerant levels to run properly. A good way to find out what your levels are is to contact us to have a preventative maintenance check up on your unit. We will ensure that the levels are correct and will add refrigerant if needed.
Over time there will likely be buildup from all of the dust and debris going through your system. It’s good to have your coil cleaned every so often to ensure that you’re getting the correct amount of air flow and will help prevent your coil from freezing up.
Dirty Air Filter
Changing out your air filter every couple of months is very important to the longevity of your AC unit. Check out our article on changing out your air filter to get more info on why it is important!
This is a very common problem here in the Phoenix Metro area. Gunk and debris likes to get clogged up in the condensate drain which can cause a lot of problems! On some units, your AC will turn off if it has an overflow switch. This is very handy and can be fixed by having one of our service techs out to blow out the drains. It can be good to keep an eye on your drains every so often and have them cleaned out. If you do not have an overflow drain switch, your unit can continue to condensate and end up leaking.
Depending on where your unit is located, this can cause a huge mess and a lot of water damage.
Does your thermostat look like it belongs in a museum? This may be the cause of why your thermostat isn’t letting your air conditioner blow cold air! Some of the mercury-based thermostats may be out of level which could be affecting your temperature. A cheap electronic thermostat could also be the issue. A lot of the older electronic thermostats were poorly made and tend to malfunction over time.