Air Duct Cleaning FAQ - Frequently Asked Questions About Air Duct Cleaning



How often should my furnace be cleaned and inspected?

Both the Environmental Pollution Agency (EPA) and your furnace manufacturer recommend having your furnace cleaned and inspected annually. According to the EPA 'A buildup of .042 inches of dirt on a heating or cooling coil can result in a decrease in efficiency of 21%'.

How often should my air ducts be cleaned?

Neither the EPA nor the Center for Disease Control (CDC) offer any guidelines as to how often you should clean your air ducts. It is important to consider that neither of these two agencies recommend how often you should have your carpets, windows or furniture cleaned either. An honest and ethical duct cleaner will help you decide how often you should have your vents and coils cleaned based on; household size, pets, environment and individual health issues.

How often should I have my clothes dryer vent cleaned?

f you have a traditional sheet-metal dryer exhaust vent, you should inspect it about every 2-3 years depending on usage. If you have the cheap, flexible, corrugated plastic vent tube, you should replace it with metal duct work in an effort to prevent fires. The outside vent should be cleaned every year.

How often should my chimney be cleaned?

According to the National Fire Protection Association, you should have your chimney swept at least once a year at the beginning of the wood-burning season. The best and safest way is to have a qualified chimney professional inspect your chimney for damaged flue tiles, creosote build-up and proper venting. They will be able to detect a build-up of creosote in your flue and remove it. Burning your fireplace or wood stove at the right temperatures will also help prevent creosote from accumulating. When you burn fires at lower temperatures, like when you partially close the damper opening at night in order to make the fire last longer, it allows creosote to form inside the chimney flue.


Does it really matter if my Heating and Air Conditioning System is dirty ot not?

Dirt build-up cannot be prevented and must be removed. Dirty inside a-coils filled with pet hair, construction debris and grime will greatly increase energy costs.Dirty or damaged fins on the outdoor condenser could be costing you money too. A dirty, non-maintained, heating and air conditioning system can easily increase electric costs by 20-30% annually and cause early equipment failure. A dirty heating and cooling system will also generate an average of $500 in repair bills over the first 5 years and rapidly escalate as time goes on. This is why




Will you have all the necessary equipment to properly clean my HVAC system when you arrive?

Each of our trucks have about $10,000 worth of equipment on board. With our high powered vacuums mounted right on the truck and our portable vacuum/brushes to take inside, we will be able to tackle any size job and get it done right the first time.

Will I have to wait around all day for you to show up?

No. We schedule in 2 hour increments, and call when we are on the way. In the rare occasion when we are running late, you will know well in advance.

Are your air duct cleaning technicians certified?

Our air duct cleaning technicians are not certified. There is only one association that we know of which certifies air duct cleaning technicians and we do not agree with their methods. If we were certified by this association, we would be one of the companies charging $500 or more per job. We feel our methods are equally as effective at a fraction of the cost.

Are your air duct cleaning technicians licensed, bonded and insured?

Our air duct cleaning technicians are bonded and insured but not licensed. As of yet, there are no licenses required for air duct cleaning. If at some point air duct cleaning licenses are required, you can be certain our technicians will be licensed.

Will there be any hidden charges?

There are never any hidden charges. You will know what the final price is before the air duct cleaning technician arrives. Infact, you can make the check out before they arrive because there will be no hidden charges and no tax! The only exception would be if you wanted the technician to do something additional like clean your chimney or dryer vent.

Do you put tarps down?

Whenever we clean a fireplace we put down tarps to protect your floors from soot. Although our air duct cleaning technicians are very careful we still take the extra step of putting down tarps, just as a precaution. when cleaning air ducts this is generally an unnecessary step, but when asked we will gladly oblige.

Do you need to remove the registers(grates)?

No our air-wand that is used is about round and there is no need, the volume of air used will be more that sufficient to clean the branch line and the register while it is on the wall

Do you cover the registers?

No, we do not cover the registers, because this could cause damage to them. With our high powered truck mounted vacuum, we feel this is an unnecessary step. Using our air duct cleaning methods, you will never need to worry about dust being blown into the house.

How long has your company been in business?

Hoffman Heating and Cooling has been in business for over 15 years. In that time we have installed hundreds of furnaces and air conditioners. In 2006 our company decided to provide air duct cleaning services for our existing customers. Word spread and we now service new customers also. It is our hopes that they will be satisfied air duct cleaning customers who will consider us for all their future HVAC needs.

Is my house going to get dusty?

No, the vacuum remains inserted in the trunk-line throughout the process so under normal circumstances that is avoided. You should see just the opposite. Most people notice a significant decrease in dust after their air ducts have been cleaned.

How is your company different from all the other air duct cleaning companies?

Unlike most of our competitors, we are not just a furnace and air duct cleaning company. We are a full service heating, ventilation and air conditioning (HVAC) company. We have our Cleaning Department with cleaning technicians who specialize and train for only cleaning & maintenance. Then we have our Service Department. These certified technicians specialize in diagnosing and repairing furnaces, air conditioners, and much more. Next, we have an Installation Department. These technicians are trained and certified to install and work with the many models that we carry, and they also install accessory units and air duct work. Finally, we are a well established business which is licensed, bonded, insured, and locally owned and operated. We have a sterling reputation in the community as well as with the Better Business Bureau and we will take all the necessary steps to keep it that way!


What happens when air flow across the a-coil is too HIGH?

Your house will not be comfortable if the air flow is too high for the air conditioning system. Your home will become "muggy" because the air conditioning system is unable to effectively remove the humidity. The whole system has to work harder and will shorten the life span of expensive heating and air conditioning parts. This will also cause you to consume more electricity. Electricity bills can easily run $100 - $300 higher per season.



What happens when air flow across the a-coil is too LOW?

Your home will not cool well and will be less comfortable if the air flow across the a-coil is too low. The a-coil can "ice-up" and will lead to early compressor failure. The whole air conditioning system will run harder consume more electricity and wear out faster.



What happens when the line set is UNDERSIZED?

If the line set is just 1 size too small, the systems energy efficiency is reduced approximately 2 SEER rating points. This translates too a higher energy bill.



What happens when the line set is TOO BIG?

Nothing, in fact that's great. The compressor won't have to work so hard to cool your home.


What happens if my air ducts "leak"?

Leaky air ducts cost an average of 18% per year in increased electric usage for the air conditioning system alone! An average of 30% extra will be spent on increased heating costs! A bigger heating and air conditioning system is required and this means you will be spending more on HVAC components. Have your air ducts sealed once and enjoy lower energy bills, lower capital costs, and more comfort.

 We hope this Air Duct Cleaning FAQ section has helped answer all your air duct cleaning questions, but if you still would like to know more, please contact our office and we will be glad to assist you. Also, you may want to visit our Air Duct Cleaning Facts page for even more information.

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Brands We Install

Carrier Heating and Cooling Installation
Lennox Heating and Cooling Installation
Goodman Heating and Cooling Installation
Payne Heating and Cooling Installation
LG Heating and Cooling Installation
Ruud Heating and Cooling
Trane Commercial and Residential Air Solutions
Bryant Heating and Cooling Systems

Our Certified HVAC Technicians are Trained to Install and Repair the Following Heating and Cooling Systems

  • Split Systems
  • Forced Air Furnaces
  • Central Air Units
  • Ductless Systems
  • A/C Evaporators
  • A/C Compressors and Condensors
  • Refrigeration Units
  • Electronic Air Filtration Units
  • Air Handlers and Air Exchangers
  • Heat Pumps

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