Installing Hvac Ductwork Attic

Choose properly sized ducts.

Installing hvac ductwork attic. 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. Ted has more than a few cobwebs in his attic. In addition to making the unit hard to get to for service high attic heat can trigger the. There you have it.

A number of problems result from this including noise unbalanced ducts. Ductwork installation could cost 35 55 per linear foot on average including materials and labor. 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. The average cost to replace hvac ductwork is around 285 per duct run and is based on the number of hvac duct runs to be replaced length of each run type and size of the replacement ductwork.

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. Ted also has inherited a powered attic ventilator. Here are some basic tips to follow. Use a draw band connector to complete the butt joint.

In many cases the cost to install ductwork is based on the number of linear feet of ducting to be installed. 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. Installing your hvac unit in the attic can free up space for these uses.

When solid ducts in walls and ceilings must be replaced the cost can rise to 550 per run or higher. 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 unconditioned space also houses his hvac system. Overlap one side as you normally would and create a butt joint on the other.

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. Put it in an attic full of blown insulation and you re forcing it to work harder to vent its heat. For a house that needs ducts the costs and work time double. 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.