Ducts are used to circulate conditioned air throughout the building for heating, ventilation or air conditioning purpose. When installed correctly, the results are a good experience for occupants, but the reverse is also true. Poor installation can increase not only energy bills but also affect human health. Risk studies by reputable organizations such as the EPA have linked environmental risk to poor indoor air quality. The ducting system comprising of supply, exhaust and return components can generally lead to occupant discomfort if improperly installed.
Poor work is often a result of code and/or specification misinterpretation, but there are other contributing factors. Some technicians already in the field lack the requisite knowledge and experience to execute quality projects. Inspections by Largo AC Repair experts have unearthed various signs of poor duct installations:
Crimping is another name for compression, a problem that is common in insulation. Even the most experienced workers can sometimes ignore the issue that results in condensation. As you would expect, compressed sections of the ductwork cause friction and obstruction, but they could also affect the structural integrity of the component. HVAC installation guidelines insist on avoidance of crimping at all costs for the named reasons.
A flexible HVAC duct that is poorly sealed or fastened can be a source of perpetual problems. Although best practices call for use of proper tape and fasteners, it is common for some contractors to use shortcuts to make more profits. Fasteners need to be applied in the correct procedure to avoid leakages, yet these shortcomings are quite apparent in some installations. Proper inspection and testing during the construction phase can expose these problems.
Another cause of pressure drop across the ductwork is tight bending. Some installers hold the incorrect assumption that sharp bends do not have an effect on pressure if they occur close to the exit. This misconception often emanates from the assignment of the exhaust fan installation to an electrician, who may not necessarily have the right skills for this job.
You can tell that a duct will cause airflow issues from its length alone. A flexible duct that is too long minimizes airflow by increasing friction along its path. Furthermore, excessively long ducts can mean a bigger air handler unit for equal cubic feet per minute (cfm).
How to Avoid These Issues
It goes without saying that property owners sometimes get a raw deal. When you are hiring an HVAC firm for duct installation, you can follow some tips to make sure the results are satisfactory. The first recommendation is to hire only the best company for these services. If possible, check out photos of their previous jobs. Asking for references can help weed out most of the wannabe providers. It also pays to have some basic knowledge of duct installation, such as flex duct installation, as you can always insist on the best. Never allow the installer to leave the site before inspecting the ductwork, and remember to perform a visual inspection.
Does the temperature in your home change haphazardly such that you are no longer in control? The issue could be the ductwork. Contact an HVAC team for in-depth analysis to determine how best to improve air circulation.