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HVAC Duct work

Why Running Ductwork in the Conditoned Space is better

Why running Duct work in the conditioned space is better

By: Dalton Pebsworth

Far too many houses run duct work through the attic or crawlspace resulting in diminished heating and cooling effects

Running duct work through an attic makes no sense from a building standpoint

Whats the problem with duct work?

Ductwork can be built directly into the inclosed space or out into a drop ceiling

Drop ceiling and the conditioned airspace can have less severe temperature gradient

Drop Ceilings and Enclosed Spaces

Duct leakage in unconditioned airspace can be the result of callbacks, moisture, and high energy bills.

Duct Leakage and Callback

Research shows that by installing duct work in the conditoned space it can reduce the moisture and improve the efficiency of heating and cooling

User Research

According to Building America:

"moving duct work into conditioned space in the hot-dry climate zone saved 8-15% on air conditioning costs for homeowners

Building America

Primex HVAC Venting States that

Primex HVAC

20%

Can lead to pressure imbalances

of a systems output is lost in the attic

Does not account for existing duct leakage

Reduces Heat Transfer

ACHR News

Reduces excessive run time when attempting to cool and heat

Repairs and faults are much easier to find and fix

How do I improve my system?

The best time to improve is to start at the building phase. Duct work is easier to instal and setup when the house is not furnished

How to fix it

Duct work can be moved into the conditioned space post building phase

What if my house is already built?

Moving duct work can save more money over time than if its left alone

Installing duct work in conditioned spaces can greatly increase the effectiveness of the system

There's no reason to put the duct work in the attic anyways!

Conclusion

Works Cited:

Sources

  • P. (2018, December 31). Why ductwork should be installed in the Conditioned Space. Retrieved March 18, 2021, from https://www.primexvents.com/ductwork-installed-conditioned-space/

  • Richardson, D. (2020, March 04). Ducts in a conditioned space: To insulate or not? Retrieved March 18, 2021, from https://www.achrnews.com/articles/135246-ducts-in-a-conditioned-space-to-insulate-or-not

  • U. (2013, January). Building Technologies Program. Retrieved March 17, 2021, from https://www.energy.gov/sites/prod/files/2014/01/f6/1_1g_ba_innov_ductsconditionedspace_011713.pdf
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