HVAC Duct Insulation Wrap | R8, 4' x 50' (200 Sq Ft) | EcoFoil (2024)

FAQs

How much insulation do I need for ductwork? ›

Rigid fiber board offers an R-value of R-4 for every inch of thickness. Ducts running through heated spaces are only exposed to room temperature air, so heat conduction isn't as much of an issue. Still, at least R-2 or a half-inch of ductwork insulation should be installed to prevent condensation on the ductwork walls.

While insulating basem*nt ductwork will, in fact, reduce energy loss from your ducts, thereby lowering the time your system has to run to properly cool or heat your house, it will also tend to make your basem*nt cooler.

Typically R-4 to R-8 is appropriate for the ducts within the insulated part of your home. No insulation up to an R-4 value will work if you have any ducts in an uninsulated or unfinished basem*nt.

“Supply and return air ducts and plenums shall be insulated with a minimum of R-6 insulation where located in unconditioned spaces and where located outside the building with a minimum of R-8 insulation in climate zones 1-4 and a minimum of R-12 insulation in climate zones 5-8.

Double layer duct wrap insulation: Installers could use one layer of unfaced duct wrap to achieve an R-10, and then add a second layer of faced, 3” R-8 duct wrap.

Decreased Utility Bills

When you consider your HVAC system is the single-largest appliance in your home that uses the most energy, you could reduce your utility bills substantially over time. The longer you own your home with efficient, insulated ductwork, the more money you can save.

A Ductulator helps you properly size your ducts, estimate air loss, find the round or rectangular duct equivalent, and determine velocity. It can prevent some costly errors and is great for engineers as well as field technicians.

The rule for calculating square metres of insulation is incredibly straightforward and involves physically measuring the length and width of the given surface. You multiply these two numbers together, and the result tells you how many square metres of insulation you need.

How much does it cost to insulate 200 square feet? ›

Placing the HVAC on the outside of a building frees up valuable interior space and lowers building costs; however, the ductwork design must include exterior HVAC duct insulation wrap to ensure efficient air delivery, conserve energy, and enhance indoor environmental quality.

If we put ducts in unconditioned space, they have to be insulated to either R-8 (if they're in an unconditioned attic) or R-6 (in any other type of unconditioned space).

Except for factory-installed ducts, plenums, and casings or exhaust air ducts where the temperature difference between the inside and outside of the duct is less than 15℉, the IECC calls for insulation to be installed in supply and return ducts: In attics vented to the outside. Within unventilated attics.