One of the keys to an energy-efficient HVAC system is to make sure your
home is free from costly air leaks that allow the treated air to escape
and the warm, stuffy air from outside to seep in. So it might come as
somewhat of a surprise when we tell you that another important key is
a properly ventilated attic that freely lets outside air flow in, some
people find themselves confused pretty quickly. If you need to keep your
home sealed, why is suddenly letting an abundance of outside air flow
in going to help? We’ll answer this question on this blog.
Problems in an Unventilated Attic
When your attic isn’t properly ventilated, all of the heat that your
roof absorbs from the hours and hours of bombardment by sunlight simply
continues to build and accumulate. With nowhere to go, it just sits and
grows, not unlike a mold infestation in a dark and damp area. Before you
know it, you’ve got an attic that’s well into triple digits
Well, that attic which is now extremely hot is a gigantic pocket of heat
sitting above your home. While you might have insulation between your
attic and the living space below, the truth of the matter is the heat
can still be passed from your attic to the rest of your home. In two-story
homes in particular, this is a huge problem and it’s not uncommon
for homes with major attic ventilation problems to struggle with
massive temperature differences between the top and bottom floors. Sometimes these
differences can be as high as eight to ten degrees, even with a properly-functioning
This is because heat simply radiates down from the attic, warming the rooms
below, and it continues to do this at all hours of the day because the
heat will dissipate so slowly. The only way to truly resolve this issue
is to give the air in your attic somewhere to go, and that means having
proper ventilation and adequate airflow where air from outside can replace
the hot, muggy air inside your attic and keep the temperature down.
Is Your Attic Ideal for Maximum Efficiency?
There’s a few ways you can figure out if your attic is properly ventilated.
The complicated way that can instantly tell you whether or not you’re
dealing with an attic ventilation issue is to use a special heat-sensing
camera or laser thermometer to investigate the ceiling over rooms that
are particularly hot and muggy. This should almost immediately show you
if you’ve got an attic ventilation problem.
The slightly easier choice is that you can go into your attic itself and
use a thermometer to record the temperature. Attics with poor ventilation
can reach temperatures in excess of 115 to 120 degrees, especially in
the middle of summer. If the temperature in your attic is ten degrees
or more warmer than it is outside, then your ventilation could use some work.
You could also use your time in the attic to check for any ventilation
holes located near the eaves in your roof and possibly even a vent located
near the top of your roof or up high on a plane. If any of these vents
are blocked or obscured by insulation, junk, or anything else in your
attic, consider moving them in order to encourage better airflow.
In worst-case scenarios, you may wish to install a new vent at the top
of your roof that heat can escape from. These vents are fairly inexpensive
to purchase, but they need to be installed properly so you probably want
to have a roofer come out and do it.
However, by encouraging this airflow, you should notice that your air conditioner
is suddenly much more effective at keeping your home cool and comfortable,
especially in your upstairs rooms which no longer have a giant quantity
of heat sitting directly overhead.
Have your home’s HVAC system audited for energy efficiency by our
Palm Beach County air conditioning professionals today!
Call Phoenix Air Conditioning, LLC at (888) 660-4337 to schedule yours.