Normally when someone buys a house with a forced air heating and cooling system, they pretty much expect the duct system that delivers the air to be in perfect working condition. With today's demands for the highest efficiency you may likely find that your duct system isn't performing in the best way possible.
Here's an example: A 30% return duct leak on a hot or cold day can decrease your heating or cooling capacity more than 50% that may sound extreme, but it's not an uncommon condition.
Maybe you are reading this because your heating and air conditioning contractor has told you there are problems, or maybe you are reading this because you've concluded on your own there are problems. Either way, let's take a look at what you should consider.
The ducts also control how much air is delivered to each room. The right amount of air will keep the room temperatures where they need to be. If ducts are damaged, improperly installed or the wrong size, they can cut your system's ability to heat or cool by more than half on hot or cold days, when you need it the most.
Unfortunately few have the knowledge or own the tools and instruments to measure the performance of your duct system. If they can't measure it, they have no idea how to fix it, or even where to begin. They assume that the ducts are just fine.
Some contractors will offer to seal your ducts to improve efficiency. While duct sealing is definitely done as part of a renovation, sealing by itself cannot address many of the flaws in a duct system. In many cases, just sealing the duct can make the problem worse, as it could choke down airflow causing equipment failure, major comfort problems. In extreme cases, it has caused back-drafting of flues leading to dangerous carbon monoxide problems.
He will typically measure the amount of air coming out of each vent with a special instrument called a "Flow Hood". Other measurements might include temperature, humidity and carbon monoxide testing.
Your Contractor should test and adjust the results of his work when the duct renovation has been completed. This step is called air balancing. Up to just 10 years ago, air balancing was performed only on large commercial buildings. Today you can get this same precision adjustment in your home from an NCI trained and certified contractor.
He will provide you with a test report showing the final operating condition of your system compared to how it functioned before the repairs were made. In other words, your contractor will prove that you got what you paid for - in writing!
Call Albert Air