July 19, 2018 Air ConditionersInfo Articles

During the hottest days of summer, your air conditioner is probably the most important appliance in your home as it keeps you cool despite the blistering hot outside temperature. What if instead of keeping you cool, your AC actually blows warm air? That’s definitely a scenario that no one wants to be a part of.

Marsh Heating and Air Conditioning is your reliable HVAC company in Champlin MN that has competent and experienced cooling technicians who can fix your home comfort issues in no time.

Here are the most common reasons for an air conditioner to blow warm air.

Thermostat Issues

People often come to a conclusion that if they’re feeling warm at home despite having the AC running, the system itself is to blame. However, it could be that the thermostat is actually what’s causing them troubles. Before assuming that you have a pricey cooling problem to deal with, first take a look at your thermostat.

The thermostat’s job is to tell the air conditioner to function. That is why a faulty thermostat can completely disable your entire cooling system. If your AC stops working, you should always inspect the thermostat before performing any other troubleshooting steps.

In checking the thermostat, consider a few things.

  • Before moving to the more complex issues, check the batteries if they need replacements.
  • For older thermostats, a simple dusting with a small paintbrush usually solves the problem. Dust and dirt are often the cause of inaccurate temperature readings and other problems.
  • Place your thermostat away from heat sources and direct sunlight.
  • Your thermostat must be perfectly level on the wall. If not, the thermostat switch will not work properly.
  • Make sure that your thermostat is set to “COOL”.
  • Ensure that your thermostat is set to a temperature lower than the outside temperature.

Clogged Filters

A filter is responsible for cleaning the air that goes into the air conditioner and the cooled air that circulates throughout the house. If there is a blockage to the filter, airflow is diminished, which renders the air conditioner unable to cool your home.

There are newer AC models that automatically shut down before too much dirt is accumulated, telling you to inspect the filters. However, older units will keep on working – but with considerably less heat production and lower efficiency. Not only does this make you feel warm, it also causes a surge in your electric bills.

Replacing or cleaning air conditioner filters every 30 to 60 days is highly recommended, depending on how dirty the air is. Properly maintaining your filter can greatly affect the overall performance of your cooling system.

Duct Issues

In addition to thermostat and filter problems, issues in your ductwork can cause your home to have inconsistent cooling. Since the rooms cannot reach the temperature you have set on the thermostat, your AC will be working continuously to provide the desired temperature. Not only this is expensive and inconvenient, it can also compromise your indoor air quality. If neglected, this can lead to certain health issues, particularly if anyone from your family is suffering from allergies or have preexisting respiratory conditions.

Electrical Issues

If your air conditioner is not working properly, check the circuit breaker, fuses, and switches. Simple issues such as a tripped breaker inside your electrical panel can cause many problems, including your air conditioner blowing warm air. A tripped circuit breaker can cause your AC to not turn on at all. These issues are pretty simple to fix, however, for more serious electrical problems such as faulty connections and blown capacitors, it is best to have a qualified technician repair it for you.

Refrigerant Leak

This is a more complex issue that only a licensed technician should look at. Low refrigerant is one of the most common reasons for an AC to blow warm air. Unlike gas, refrigerant doesn’t just get used up, so if you’re low, it means there is a leak somewhere in the system that requires professional attention. The technician needs to find the leak, seal it, and add the right amount of refrigerant to restore the system’s cooling ability.

Call the Cooling Experts

If you want to bring back the cool, comfortable living environment in your home, call our air conditioning gurus at Marsh Heating and Air Conditioning. We are your preferred Blaine AC repair contractor keeping you comfortable at home since 1974.