Five Reasons Why Your Air Conditioner Isn't Cooling Your Home

July 10, 2020

When it’s a hot summer day in Houston, nothing feels worse than realizing your home comfort system isn’t performing the way it was built to. The last thing you should have to do is schedule HVAC service. But your AC is a fairly complex system, so it can be challenging to discover what’s driving the issue by yourself.

That’s why Marcos AC & Heating wrote this guide to help you find out what might be taking place with your cooling system. Here, you’ll uncover a few common explanations for why your house is feeling too warm. And though a couple of these are fairly painless DIY tasks, you might need to bring in a professional for HVAC repair.

And if you do, Marcos AC & Heating is here for you. Here are five reasons why your air conditioner may not be cooling your house in Houston.

1. Your Device Settings Are Incorrect

Every family adjusts their thermostat a bit differently to suit their personal requirements. Even so, a lot of homeowners make the mistake of setting their device to “On” instead of “Auto.” With this setting, the fan in your HVAC system will continue to push out air even once you’ve attained your desired temperature.

This can look like your ducts are blowing out untreated air, when really it’s only using the fan more often than required. Trying changing this setting and find out if things change.

2. Your Cooling System Needs Some Cleaning

There are two principal areas to look for dirt or dust accrual when your air conditioner doesn’t appear to be performing correctly.

Before anything else, examine your system’s filter. If you don’t change your filter regularly, built-up dust can make it more challenging for air to move through and cool your home. If your filter is clearly dirty or dusty, it’s likely time to replace it. (And for best operation, you need to change it about once every three months at least.)

If your filter appears clean, head to your external unit. Find out if there’s adequate space around your air conditioner and clear any plants or litter stuck there. This section of your AC lets off the heat from within your space. If the coils outside are congested, you won’t be cool in your home.

We suggest booking professional air conditioner maintenance each year to keep your equipment operating properly and to keep your warranty valid.

3. Your AC is Losing Refrigerant

Refrigerant is the stuff that conditions the air in your home. It moves between your indoor and outside units to absorb and release heat, to help your rooms stay comfortable. If there is a crack along that path, you won’t be comfortable again until you book professional air conditioning repair.

Signs of a refrigerant leak include a lack of cooled air, more expensive utility expenses, frozen evaporator coils and strange hissing noises arising from your air conditioner.

If you suspect refrigerant might be leaking, call Marcos AC & Heating for HVAC repair as soon as possible. Refrigerant can also be detrimental to your family’s health.

4. One or More Elements Should Be Replaced

Your system is made up of a couple crucial elements. These include the blower, evaporator coils, compressor, fan, condenser coils and expansion valve. If any part is broken, your home comfort crumbles.

Our Marcos AC & Heating experts are trained and experienced in HVAC. They can help you find and mend any issue.

5. Your System Should Be Upgraded

If your system is more than 10 years old, it could likely be about time to research new air conditioner installation. As your system ages, it sadly won’t run as well as it did when it was new. And it could be making your space uncomfortable.

If your HVAC unit is newer but still isn’t cooling things off, it may be too small for your house. AC units are not one-size-fits-all. An air conditioner that’s not powerful enough just can’t chill a house the way an accurately sized air conditioner can.

Get a More Comfortable Home with Marcos AC & Heating

You shouldn’t blow time this summer in an unpleasant place. When your cooling system isn’t functioning correct, lean on Marcos AC & Heating. We’re pros in HVAC repair. Contact us at 713-469-3357 right away.