Diy Duct Work Attic Installing

Avoid any hot elements such as water heaters heater or stove exhausts or hot water pipes and electrical elements such as junction boxes or.

Diy duct work attic installing.

Installing flexible or insulated duct is an easy diy project. Installing flexible duct insulated duct diy 1. On the floor cut in and attach the rectangular take offs to the front and rear of the plenum. 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.

Install dampers at the registers to adjust airflow. The big advantage over a full rigid installation is sound control the installations are quieter than fully rigid ones. Place ducts on top of joists in a ceiling or attic. The first thing you want to do is take either air duct sealant or mastic and spread it around the take off.

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. If the air duct isn t long enough it is possible to add extra length. It was new when the ac was put in 7 years ago. Each register should have its own damper that can be accessed for adjustment.

The take offs may have an inside hammer lock which is a flange that bends over inside the plenum. I ll show you how to get the job done right. The attic ductwork is flex duct work. I use the caulking gun with air duct sealant to get back in the spaces it s hard to reach with the mastic.

Adding heat runs in a basement may change the airflow in the ductwork going to other rooms. 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. 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. Remove existing ductwork where needed.

In this video i use mastic and air duct sealant t. 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. Do it yourself hvac. I called out the original hvac company and they took a look and said they saw no water.