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reasons why ac is not working, ac repair in longmontYour air conditioner is one of the most important parts of your home, especially during those hot summer months. However, things can quickly go downhill if your AC isn’t cooling properly. You may need residential AC repair in Longmont to solve your problem and get your house back to a comfortable temperature. Here are five common reasons your AC might not be cooling properly.

The filter needs to be changed.

Air from the AC unit passes through the air filter, and a dirty filter can make it difficult for cold air to get through. Your AC unit has to work a lot harder to push air through a dirty filter, which can lower its power and raise your energy bill. Change your filter at least every 3 months to allow the air to move efficiently. If you have pets or run your HVAC system constantly, you should check your filter even more frequently.

The vents are blocked.

Sometimes increasing the strength and effectiveness of your AC is as simple as cleaning the house. Vents are what determines how much cool air enters a room. If they are blocked by furniture or other items in the room, the air doesn’t have anywhere to go. Vents can also cause problems if they are full of dust or debris that naturally accumulates in a home. Clean around your vents regularly. Consider hiring a professional to clean your ductwork as needed.

Cool air is seeping through the insulation.

Insulation works to keep cool air inside the house and block out warm air from outside. Powerful sun rays beat down on the roof throughout the summer, which means insulation in the attic or crawl space is important to cooling the entire house. Proper insulation helps more cool air from the AC stay inside the house instead of losing it all through the walls or roof. Older houses may have thinner insulation, or it could have fallen down over time. For best results, your attic or crawl space should have thick, energy-efficient insulation around the entire roofline, wall joists, and floor. Walk around your attic to see if the insulation needs to be replaced or repaired.

The thermostat is outdated.

The AC unit does all the work, but the thermostat tells it what to do. As you update and replace your HVAC system, you should also update and replace the thermostat. One of the first steps to checking on your AC unit is to make sure the thermostat is set to cool at a temperature that’s lower than the temperature outside. Older thermostats may give out and cause the system to be faulty, even if the HVAC system itself is still in good condition. If that’s the case, look for a modern, programmable thermostat that allows you to set different temperatures for different times of day. Smart thermostats work with other sensors in the home to automatically adjust the temperature based on the weather and occupancy of the house. Replacing a thermostat is significantly less expensive than replacing an AC unit.

The machine is broken or leaking.

There are a number of components that allow AC to create and blow cool air. If one of those parts is damaged or has a leak, it can hurt the entire system. Refrigerant is the liquid that keeps the air cool as it cycles through the system. If the refrigerant levels are low, it likely means there’s a leak that needs to be repaired by a professional. Condenser coils also help produce cold air, but a blown fuse can make the AC unit appear to be working normally even if no cool air is coming out.

If your AC isn’t cooling properly, make sure the filter is clean and the vents are open, and then call an HVAC professional for inspection and repairs.