Diy Duct Work Attic Installing

If the air duct isn t long enough it is possible to add extra length.

Diy duct work attic installing. Place ducts on top of joists in a ceiling or attic. Install dampers at the registers to adjust airflow. Raise the plenum up in place and attach with self tapping screws. Supply air duct installation.

Remove existing ductwork where needed. If those dampers can t be accessed from below you ll want to install them close enough to the register so that you can reach them through the register opening. On the floor cut in and attach the rectangular take offs to the front and rear of the plenum. It was new when the ac was put in 7 years ago.

Avoid any hot elements such as water heaters heater or stove exhausts or hot water pipes and electrical elements such as junction boxes or. Step 2 installing the ductwork once you have an idea of where the ductwork should go start with the plenum and screw that into position using duct brackets and suitable screws. The take offs may have an inside hammer lock which is a flange that bends over inside the plenum. Installing flexible duct insulated duct diy 1.

Each register should have its own damper that can be accessed for adjustment. I ll show you how to get the job done right. The attic ductwork is flex duct work. Take care not to place your duct work too near any strong sources of heat such as that in a hvac device and avoid curling the duct around a sharp point.

Do it yourself hvac. The first thing you want to do is take either air duct sealant or mastic and spread it around the take off. Recently i had another hvac company come out and put in a new bathroom vent and they told me they believed the duct work was full of water. I use the caulking gun with air duct sealant to get back in the spaces it s hard to reach with the mastic.

The trick to getting these installations right is to use rigid ductwork for all deviations from straight then pull the ductwork taut between the two ends which now point towards each other. Adding heat runs in a basement may change the airflow in the ductwork going to other rooms. Run the new flexible air duct under the house from the floor return to the underside of the air handler and attach to the metal vent box or plenum image 1. In this video i use mastic and air duct sealant t.