Before You Turn Your AC Back On…


It is safe to say the South Texas “cold” weather season is nearing its end.

But hold on! Before you reach for that thermostat to turn your AC back on, read these energy-reducing, repair-preventing tips first.

4 things to do before cranking up the AC include:

  • Check the air filter
  • Double-check your thermostat settings
  • Clear your outdoor unit
  • Schedule AC maintenance

Get our 
Preventative Maintenance Check-up:​ We will perform an in-depth inspection and check-up of your cooling and heating system to ensure it’s in tip-top shape.​

Let’s look at why each of these tips can make or break your summer comfort…

  1. Check the air filter

Your heater shares a filter with the AC. As you’ve been running the heater for the past few months, even infrequently, your filter has been trapping air pollutants.

If your filter is clogged or even looks dirty you need to change it immediately.


Why? Because a clogged filter will eventually suffocate your AC system. Yes, your AC system has to breathe to remove the heat from your home. When a layer of dirt and dust is blocking air from getting into your system, it won’t be long until you notice big problems like:

  • A frozen evaporator coil
  • Ice on refrigerant lines
  • Weak airflow from vents
  • Higher-than-normal energy bills

Need help finding your filter and changing it? Just give us a call.

  1. Double-check your thermostat settings

Always check that you’ve moved the thermostat from HEAT to COOL. You would be surprised on how many repair calls we get from homeowners who didn’t check this first. It is also a good idea to make sure that your thermostat fan is set to AUTO not ON.


When you set your thermostat fan to ON it will run constantly—even when your AC isn’t going through a cooling cycle. This not only uses more energy, it actually will make your home humid.

Your AC dehumidifies your home’s air. It does this by moving the air over the evaporator coil—an A-shaped web of cold refrigerant coils.

The cold refrigerant inside those coils absorbs both the heat and moisture in the air. So, over time, moisture collects on these coils and drips into a pan. But if the fan is set to ON instead of AUTO, the fan will continuously blow air over the cold coils, which means moisture will never have a chance to collect and drip into a pan. Instead, the moisture is brought right back into your home.

Setting the fan to AUTO turns the fan off between cooling cycles which allows time for the moisture to collect and drip into the drain pan.

Bottom line … Setting your fan to AUTO means better humidification and lower energy bills.

  1. Clean the outdoor unit

After a windy winter, make sure your condenser, the outdoor unit, is clear of leaves, grass, sticks, dirt, etc.

It may appear harmless but a even a thin layer of dirt or some leaves stuck in the condenser can lower your air conditioner’s efficiency which increases your energy bill.

The condenser’s main job is to remove all of the heat that was collected from the air inside your home. The condenser then releases all of that heat into the outdoor air.

However, if the condenser is stifled by a fence or foliage that’s too close or covered in dirt it will have a hard time trying to release all of that heat. This is like trying to cool off a hot bowl of chili when there’s an airtight lid over the bowl.  It takes a while to release the heat.

Your outside unit works the same way, when it can’t get rid of the heat fast enough, it sends some of the heat right back into your house, which means higher energy bills because of decreased efficiency.

What you can do: Spray down the condenser coils with your hose on a gentle setting.

  1. Schedule AC maintenance

A lot of people ask “Why would I get maintenance now? I haven’t even started my air conditioner yet!”

If you schedule AC maintenance before you start using your air conditioner, you’re ensuring that small problems are resolved before your AC starts running day and night. Scheduling maintenance now prevents those small problems from turning into major ones and robbing you of your comfort when you need it most—in the middle of a South Texas summer.

Not sure? Check out our blog 4 Ways a Tune Up Keeps You’re A/C Running All Summer.

Get AC maintenance now to keep your air conditioner running all summer!

Ready to schedule your annual Air conditioner maintenance? Then just contact us.

We’ll be sure to send a technician out when it’s convenient for you.

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