Installing Hvac Ductwork Attic

How to properly install ductwork in an attic once your attic is properly sealed and insulated you ll want to focus on the proper way to install ductwork above your in law suite.

Installing hvac ductwork attic.

Put it in an attic full of blown insulation and you re forcing it to work harder to vent its heat. There you have it. In addition to making the unit hard to get to for service high attic heat can trigger the. Overlap one side as you normally would and create a butt joint on the other.

When solid ducts in walls and ceilings must be replaced the cost can rise to 550 per run or higher. The 1 800 square foot brick ranch in climate zone 4 dates from the 1960s but the previous owner installed both a furnace and ductwork in the attic just four years ago. Not sure where to install your hvac system. One of the most common mistakes when installing attic ductwork is choosing undersized ducts which means not getting ducts large enough for the connected hvac system.

For a house that needs ducts the costs and work time double. Ted also has inherited a powered attic ventilator. In many cases the cost to install ductwork is based on the number of linear feet of ducting to be installed. 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.

The most typical duct replacement cost range of 175 400 per duct includes removal of old duct and supply register installation of the new flexible or metal duct labor costs and disposal of. Installing your hvac unit in the attic can free up space for these uses. Ted has more than a few cobwebs in his attic. Especially since most people don t make use of their attic space it makes sense to move the hvac system to the attic to free up basement space.

Ductwork installation could cost 35 55 per linear foot on average including materials and labor. Use a draw band connector to complete the butt joint. The big advantage over a full rigid installation is sound control the installations are quieter than fully rigid ones. If your supplier doesn t carry draw band connectors make your own by cutting a piece of pipe to overlap the ends and then screw and tape the band into place.

A number of problems result from this including noise unbalanced ducts. Choose properly sized ducts. But a contractor experienced in retrofitting can cleverly hide ductwork behind walls in the back of closets and up in the attic with minimal cuts into walls and the ceiling and very little mess. The unconditioned space also houses his hvac system.