The
following table will give you a rough idea of what your home's air
infiltration rate might be and what you might expect after receiving a
complete home tightening:
| Home
Condition |
ACPH* |
| Existing
Home |
| Old very leaky home |
1.00 |
| Old moderately leaky home |
.75 |
| Average home |
.50 |
| Fairly tight home |
.45 |
| Tightened
Home |
| Average Tightening to Old Very Leaky
Home |
.75 |
| Average Tightening of Old Moderately
Leaky Home |
.60 |
| Average Tightening to Average Home |
.45 |
Blower Door Assisted Professional
Sealing Job
(This is what E-Star certified energy raters do.) |
.35 |
| Blower Door Assisted Professional Extreme
Tightening (E-Star certified energy raters can do
this.) |
.25** |
* Air
Changes Per Hour is the amount of air inside your home that is
replaced by outside air every hour.
** You probably don't want to lower your ACPH below .35 ACPH
without adding a mechanical ventilation system to your home to
bring in enough fresh air to maintain a healthy living
environment. It is difficult to get your house to this level
without professional help. |
