How often do you need to have your air ducts cleaned?

There is no single interval that fits every house, but there is a sensible default. How often to have your air ducts cleaned comes down to three to five years for a typical Central Florida home, with a shorter cycle when something specific has changed.

How often should have the air ducts in your home or business cleaned? 

Just like routine maintenance on a vehicle to prevent damage and premature failure, your HVAC system requires routine maintenance as well. Air ducts should be cleaned on a regular basis, but how often should you clean your air ducts? Before we get to how often duct cleaning should be performed, lets cover some basic information covering air duct cleaning.

The importance of air duct cleaning

Air duct cleaning helps in removing debris and dirt from the duct system. There can be a lot of different deposits such as mold, mildew, vermin, dust from renovations or construction, insect droppings, or other items that may get stuck in the air ducts like dog or cat hair. It is important to remove these contaminants so they are not circulated through the HVAC system possibly causing harm or inefficiency to the unit or to the occupants of the home or business.

How often do you need to have your air ducts cleaned?

NADCA suggests that the duct system in residential homes should be inspected once every 2 years and a commercial property should be inspected once annually. From our experience a duct system is cleaned once every 3 to 5 years. We do recommend sanitizing the air duct system once a year, as most sanitizer compounds are only effective for 12 months. The air ducts may need to be cleaned more often if you have pets or smokers in home or business.

Knowing when to have the air ducts cleaned

The biggest sign that the air duct system needs cleaning is usually dust on the vents. It may be beneficial to consider duct cleaning when moving into a new home. When remodeling or renovations have been made at a home or business it is recommended to have the ducts cleaned once the construction work is complete. A cleaning should also be considered if there has been any water damage in a home. Commonly in Florida we encounter microbial growth inside of ductwork that needs to be cleaned.

What signs tell you it’s time to clean your air ducts?

At times, your ventilation system itself will tell you that it is time to have your vents cleaned. If you see dust coming from your vents it is time for the ducts to be cleaned. A big indicator is a lot of dust collecting on the return filters in a short amount of time. It is highly recommended to change your return air filters at the minimum every 3 months.

There can be noticeable traces of insects living inside the ductwork, if you notice any of these signs it may be a good idea to have the ductwork cleaned and looked over. Having the system looked over to ensure there isn’t an entry point the insects are entering the system. There have been instances where rodents will create holes in the ducts causing lots of issues.

If there is any question that you may need a duct cleaning service, do not hesitate to contact a qualified air duct cleaning company, to look over the system.

Working out how often to have your air ducts cleaned

Shorten the interval if you have pets that shed, if anyone in the house has asthma or significant allergies, if you have had building work done, or if the system has ever taken in water. Attic ductwork in this climate also ages faster than most people expect — the humidity and the temperature swings are relentless, and a run that was fine at year three can look very different at year six.

Lengthen it if the house is well sealed, filters are changed on time, nobody is reacting to anything and an inspection shows clean runs. There is no benefit to cleaning on a calendar when the system does not need it.

The practical approach is to look rather than count. Pull one supply grille once a year and shine a torch down the run — that tells you more than any schedule. If you would rather someone else made the call, our estimates are free and we are straight about it; see what a residential duct clean involves, check the prices, or book an inspection.