Signs You're Overworking Your System

An overworked HVAC system will cost you in higher energy costs and repair bills. These situations might help you discover if your system is working harder and costing you more than it should.

It runs in brief spurts.

Few things harm a central air conditioner more than short running cycles. The frequent starts stress all the parts, but the compressor and the motors bear most of the burden. When A/C equipment first starts up, it requires a lot of electricity to run.

The frequent bursts of electricity wear these parts out faster. They use more energy and will fail faster. To avoid equipment that runs in short cycles, insist on having a load calculation performed on your home before you install new HVAC equipment. Oversized systems are not better when it comes to cooling and heating equipment.

Filter changes are infrequent.

Running your system with a clogged air filter will overwork it. The airflow slows through the air handler and the ductwork. As a consequence, it takes longer to cool your home, which increases the wear and tear on all its parts.

Running it with low airflow often causes the coil inside the air handler to freeze. If your system continues to run, it could burn the compressor out, which is the A/C’s most expensive part.

Your electric bills are high.

Steadily rising energy consumption often indicates an overworked system. If you’ve eliminated obvious causes like ductwork leaks or a dirty air filter, your system may be showing the signs of an overworked HVAC system.

It requires frequent repairs.

If it seems like your system needs repairing often, it may be overworked. While oversized equipment is the primary cause of system problems, the opposite might contribute as well. If it’s too small for your home, it will have to run in cycles longer than the manufacturer intended, which will shorten its lifetime.

The experts at Air Assurance can help you discover if you have an overworked HVAC system to help you avoid excessive energy and repair costs. We provide trusted HVAC services for homeowners in the Broken Arrow area.

Our goal is to help educate our customers in the Tulsa and Broken Arrow, Oklahoma area about energy and home comfort issues (specific to HVAC systems). For more information about other HVAC topics, call us at 918-217-8273.

Why Your A/C Freezes in the Summer

While ice on a hot summer day is usually a welcome sight, an A/C freeze isn’t. Ice formation on the indoor evaporator coil of your central air conditioner can eventually turn into a solid block, obstructing all airflow through the system. This can seriously damage expensive components such as the compressor. Since the evaporator coil is sealed inside the indoor air handler, you're usually unaware that ice is accumulating. The only noticeable signs may be warm air blowing from the A/C vents, automatic system shutdowns for no apparent reason, or water pooling on the floor around the air handler when the ice melts.Here are some common causes of an A/C freeze and what may be required to resolve them:

Dirty Air Filter

As the air filter clogs, system airflow is strangled. Low airflow through the evaporator coil reduces heat extraction and causes the coil temperature to drop from normal approximately 40 degrees to below freezing. Condensation on the coil then freezes and ice accumulation begins. To prevent low airflow, replace the filter monthly during the cooling season.

Insufficient Refrigerant

When refrigerant pressure in the system drops too low, the refrigerant vapor expands excessively and actually becomes colder. This, in turn, causes the evaporator coil temperature to drop below freezing and ice to form. Low refrigerant charge is usually traceable to a leak in the system that must be pinpointed and repaired by a qualified HVAC service tech. When the refrigerant charge is returned to specs, coil temperature should stay above freezing.

Dirty Coil

Dust and dirt particulates in the system airflow gradually accumulate on the coil. This inhibits heat extraction, allowing the coil temperature to fall below 32 degrees and ice formation to begin. Since the coil is mounted inside the air handler, it’s not accessible for DIY cleaning. Coil cleaning should be performed by a qualified professional. It’s also a standard part of regular annual preventive maintenance offered by your HVAC contractor.

Don't suffer due to an A/C freeze on a hot summer's day. Contact Air Assurance for fast professional service.

Our goal is to help educate our customers in the Tulsa and Broken Arrow, Oklahoma area about energy and home comfort issues (specific to HVAC systems). For more information about other HVAC topics, call us at 918-217-8273.

Keep Your Air Conditioner From Freezing

As hot as it gets in Broken Arrow in the summertime, your air conditioner can still freeze. If it's never happened to you before, it's a good idea to know what to do, in case you can fix the problem yourself. Even if you have to call for help, you will know what to do to limit damage until a technician arrives. Knowing a bit about how a frozen air conditioner occurs can also help you prevent this happening so that you're not sweltering on a hot summer day.

Change Your Air Filter

It may just sound too simple to be true, but a dirty air filter can actually cause your air conditioner to freeze by blocking air flow. The dirt buildup on the air filter can prevent an adequate amount of air from passing over the evaporator coil, so that the condensation on the coil can freeze.If you can't remember to check and change your air filter regularly, set yourself reminders on your computer or schedule maintenance with your HVAC consultant regularly a couple of times during cooling season to make sure your A/C is running right.

Improper Refrigerant Charge

Another reason for scheduling regular maintenance is to check the refrigerant charge for proper levels. Low levels may mean you have a leak, and a low refrigerant charge can cause your A/C to freeze up.

What to Do When the A/C Freezes

If your A/C isn't cooling properly and you find ice on the evaporator coils, turn the system off. Check the filter and change it, but allow the ice to defrost before you turn it back on. (You can turn on just the fan to speed up the procedure.) As the ice melts, check the drain pan under the evaporator coil to make sure it doesn't over flow.If the system still won't cool, call a licensed HVAC company. Only licensed technicians should handle refrigerant.

To learn more about dealing with a frozen air conditioner, contact Air Assurance. We offer exceptional service and customer satisfaction in Broken Arrow and the surrounding area.

Our goal is to help educate our customers in the Tulsa and Broken Arrow, Oklahoma area about energy and home comfort issues (specific to HVAC systems).Credit/Copyright Attribution: “GSPhotography/Shutterstock”