Modern air conditioning systems are relatively quiet, and though some noise is to be expected, any sounds that are new, unusual or that have become louder should be investigated to prevent expensive damage to your system. Three of the most common sources of abnormal sounds include the fan belt, the electrical system, and the compressor, and they should be thoroughly inspected if your air conditioner is noisy or suddenly louder than normal.

Air Conditioner Is NoisyBlower Fan Belt

Inside the air handler, especially in a commercial application, a belt connects the blower motor to a squirrel-cage fan, which is used to move air through ducts of your home. Over time, the belt can stretch or begin to crack, and the pulleys on the motor and the fan can lose lubrication or become misaligned. A stretched belt can cause screeching sounds as it slips, and a cracked belt can start thumping as pieces break away. Pulleys that are starved of lubrication or misaligned can begin to whine or screech, as can the blower motor if it’s not properly lubricated. Have the belt adjusted or replaced, if necessary, and check the pulleys and blower motor for proper lubrication and alignment. Failing bearings can also cause this type of noise.

Electrical System

Faulty electrical contacts, relays, and capacitors can cause many strange noises in a system, including clicking as relays or contacts fail to engage properly or buzzing as the start capacitor fails to start the compressor properly. Have the electrical system inspected, cleaning any dirty contacts and replacing burned or faulty components.


Problems with the compressor can cause screeching, whining, thumping, buzzing or hissing noises. If it’s hissing, there’s likely a refrigerant leak; and if it’s buzzing, the start capacitor may have failed. Screeching, whining, thumping or other noises may indicate serious problems with the compressor, such as damaged pistons or scrolls, lubrication failure or worn brushes. Have the compressor inspected immediately to avoid unnecessary damage.

If your air conditioner is noisy, talk to our HVAC experts at Conditioned Air today to determine the cause of the problem. We serve the Southwest Florida area, including the communities of Naples and Sarasota.



For those that suffer from allergies, any particles or pollutants in the indoor air can make them uncomfortable and cause symptoms like congestion, sneezing, coughing, itchy eyes or a runny nose. There are many allergy triggers present in the average home, but with a few simple steps, you can minimize their effect on your comfort and your health.

Common Indoor Allergy Triggers

There are several substances that can cause indoor allergy symptoms, including many household products and natural sources. Some of the most common allergy triggers include:

  • Household dust: Everyday household dust can contain dozens of allergens, including pollen, skin cells, insect droppings and mold spores. It can collect anywhere in a home, but is hard to remove or control effectively in certain areas, such as carpeted rooms, duct systems, storage areas or on anything mounted high on the ceilings or walls. Frequent dusting and vacuuming can reduce dust problems.
  • Dust mites: Secretions and droppings from dust mites and other insects can cause many allergy symptoms, though by controlling humidity, minimizing dust and using hypoallergenic bedding, symptoms can be reduced.
  • Pollen: Pollen often finds its way in through open windows or doors, or is carried in by people. With proper air filtration and frequent cleaning, most pollen can be eliminated.
  • Pet dander: Skin cells, hair and skin secretions from pets can trigger allergy symptoms in many people, especially if the pet sleeps in the same room. Regular cleaning, air filtration and frequently washing pet bedding and furniture covers can reduce symptoms.
  • Chemicals: Volatile organic compounds or chemical vapors from cleaning products, new furniture or carpeting, paint or building products can cause discomfort for those with allergies. Choosing products with low VOC concentrations and using proper ventilation can eliminate most problems.

Reducing Indoor Allergy Triggers

Frequent HVAC maintenance and air filter changes, as well as regular dusting and vacuuming, can reduce or eliminate most problems with dust, pollen and pet dander. Keeping the humidity under 50 percent can control dust mites and mold.

To learn more about controlling indoor allergy triggers, talk to our experts at Conditioned Air, serving Southwest Florida.


Modern construction techniques have produced homes that are tightly sealed and thoroughly insulated, which dramatically improves their energy efficiency but introduces other problems. Without an adequate ventilation system, indoor air pollutants such as dust, pollen, pet dander and chemical vapors tend to stay in the air longer, potentially causing or contributing to certain health problems. A balanced home ventilation system can help keep the air in your Southwest Florida home cleaner, improving your comfort and health.

balanced home ventilationWhy a Ventilation System Is Important

In great enough concentrations, chemical vapors, dust, pollen and other indoor air pollutants can cause symptoms like congestion, a runny nose, coughing or fatigue in healthy people, and it can make conditions like a cold, the flu, allergies, asthma and other breathing conditions worse. By installing a ventilation system, you can constantly circulate fresh air throughout your home regardless of the weather, eliminating pollutants like chemical vapors and filtering out dust, pollen and other particles.

Why Choose a Balanced Ventilation System?

There are several types of ventilation systems, including exhaust, supply, balanced and HRV or ERV. The exhaust system is relatively inexpensive and draws air out of the home, which is replaced by outdoor air through vents, windows or leaks in your home’s outer envelope. As it draws in the replacement air, often pollutants can find their way in.

Supply ventilation systems filter and bring air into the home, exhausting the air through vents, windows or leaks. By pressurizing the inside of the home, supply systems keep out more pollutants, but can lead to condensation and moisture problems.

A balanced ventilation system is a combination of both supply and exhaust systems, drawing in filtered air and simultaneously exhausting an equal volume of stale air. This prevents pressure changes in the home and ensures that the air inside is always fresh and clean. HRV and ERV systems are balanced systems that recover heat and energy from the air as it is exhausted.

To learn more about balanced home ventilation systems, talk to our team at Conditioned Air. We serve the Southwest Florida region, including Sarasota and Ft. Myers.