There is usually the option of installing air-conditioning air ducts either above the ground or in slabs. The cost of installation is one of the most significant things that a person should consider when deciding on which type of installation to go with. The following are costs of in-slab installation that one may not have to worry about if he or she decides to go with an above-the-ground duct system. Knowing these things will therefore help you when it comes to making the best decision about your air-conditioning system.
Unlike duct systems that are installed above the ground, in-slab duct systems have to carry the weight of gravel, cement, or any other materials that may be placed above them. If left to shoulder all this weight on their own, the walls of the duct system may collapse. This may then cause a restricted airflow. This can also completely block the flow of air through the system, something that may then render the air-conditioning system useless.
To prevent air-duct collapse, you will have to reinforce the area around the duct system. Building strong reinforcements around the ducts will shield the ducts from the force of the overlying construction material. This will not only keep the ducts from collapsing but also go a long way toward helping to increase the lifespan of the duct system.
When calculating the cost of in-slab duct system installation, the cost of buying the reinforcements should be included.
HVAC duct-vapor barriers and sealers
The fact that the duct system will be installed in the ground will make it easy for water to access the duct system. Groundwater—especially if the in-slab ductwork is installed below the high water table of the area—is also a constant threat, as is water that may leak from burst pipes or flow from blocked drains.
Since the presence of water will not only reduce the air-carrying capacity of the ducts but also encourage corrosion and mold growth, preventing infiltration should be a priority for anyone who chooses to go with an in-slab duct system.
Duct-vapor barriers are usually effective when it comes to protecting ducts from water damage. On the other hand, duct sealers usually help to protect the interior of the ducts from water-induced corrosion. Barriers and sealers are essential when it comes to preventing premature duct damage, and thus their costs should be considered when deciding whether or not to go with an in-slab air-conditioning duct system.
Talk to companies such as New Climate Heating & Air Conditioning to find out how much it will cost to install an air-conditioning system in your area.