Just blow the attic to r 38 and over the top of ducts if needed.
Installing heating ducts in attic.
How to properly install ductwork in an attic tip 1.
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.
Ducts up high get tore up.
The higher in the attic the hotter it is.
As most gba readers know ducts belong inside a home s thermal envelope not in an environment that s cold in the winter.
Attic hvac systems also require shorter ducts.
Most hvac companies have low man on the job installing ductwork.
Some cases duct leakage air flow were worse than before the work was done.
I stumbled into ductwork repair change out by testing before and after ducts were sealed by hvac companies.
Installing ducts in a multistory home goes more slowly since wall stacks are included.
Leaks and overflows on a given floor will seep through the floors to affect everything below it including your hvac system.
People can not carry ladders up into a attic and them place them onto 1 1 2 wide boards so they can climb over ducts.
Having it installed in the attic ensures that it is 100 percent protected from flooding caused by plumbing leaks and overflows.
You shouldn t install ducts in a vented unconditioned attic.
Installing ductwork is a 1 4 day job because of the wide range of scenarios.
Choose properly sized ducts.
This is an especially relevant tip for flex ducts more on that in a.
Adding heat runs in a basement may change the airflow in the ductwork going to other rooms.
To reset the switch you ll need to climb up into.
No room in the bid for the time to do it right.
Connecting an attic air handler to ceiling ducts in a single story home is a quick project.
Each register should have its own damper that can be accessed for adjustment.
Give your ducts the proper support.
One of the most common mistakes when installing attic ductwork is choosing.
The lower the cooler it is.
Install dampers at the registers to adjust airflow.
Blown in insulation is cheap.
Not part of what is in the attic.
In addition to making the unit hard to get to for service high attic heat can trigger the high pressure limit switch turning your condenser off.
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.
Here s a typical scenario for a 2 000 2 500 square foot two story.
The attic is a hot dirty nasty place.
Your hvac system will require shorter ducts.
Ducts are to be part of what is inside the house not part of.
