Dahlia Lopez and her weatherized house |
People used to live in Texas
without air conditioning, but I wasn’t one of them. My parents didn’t have air conditioning until
the month before I was born, during the heat wave of 1954, when my father took
pity on my pregnant mother and bought a window unit for the living room. They put my crib in the cool room, so I
became one of the first members of the AC generation.
We all know that in a hot,
muggy climate like central Texas air conditioning is hands down the biggest
electricity hog in our homes. In the
summer, air conditioning can account for 70 percent of the electric bill. But knowing a fact about electricity, and
being willing to live without air conditioning are two entirely separate
things. Just typing that sentence made
me so hot I had to turn the thermostat down.
So what is an ecologically-minded person to do?
Most people, when they think
about saving money on air conditioning, imagine turning up the thermostat and
suffering. There is certainly nothing
wrong with adjusting the thermostat, and I highly recommend it, but what if you
could be just as cool as you want and still use half the electricity? Wouldn’t that be a no-brainer?
Does this scene ever happen
at your house? The kids are going in and
out the kitchen door, leaving it wide open behind them. Finally a practical person, usually the one
who pays the electric bills, interrupts the fun by yelling, “Shut the
door! We can’t air condition the entire
outdoors.” The kids of course are
thinking that it would be a really good idea to air condition the whole
outdoors because, hey, it’s super hot out there.
But the truth is that,
without being aware of it, many people are trying to cool the whole outdoors
all the time, even when the door is closed.
Dahlia Lopez had that problem. She lived in an old farm house that belonged
to her grandparents back when people just resigned themselves to the ambient
temperature. Houses back then were not
designed to keep cold air inside. They
were designed to let a breeze blow through, and that is exactly what Dahlia’s
house did. In the winter an arctic wind
blowing through the bathroom turned an ordinary shower into an ordeal. In the summer the house never felt cool and
her utility bills were topping $300 a month, even though her house is not very
big. Not only was she hot in the summer
and cold in the winter, but she was wasting money that she had better ways to
spend.
Dahlia had recently retired
and didn’t have the disposable income needed to remodel and weatherize her home,
but she qualified for a city program that helped owners of older homes reduce
their energy requirements. An energy
auditor did a blower door test, in which a big fan sucks air out of the house,
allowing the auditor to find all the places where outside air is leaking
in. The test proved that Dahlia’s
vintage house was no barrier to the elements, with air leaks around her windows
and doors, through the attic, and even around her electrical outlets. The auditor made recommendations, and then a
contractor came in and blew fiberglass insulation into her attic and walls, insulated
her outlets, sealed and replaced windows, and caulked and weather-stripped her
doors. She got new fiberglass batts and
drywall in her bathroom, and solar screens on her windows. This work was done in the winter and Dahlia
noticed a difference right away. She
could go to bed without bundling up like an Eskimo.
The financial benefit hit
home in the summer. Prior to the weatherization
work her June electricity consumption was 1600 kilowatt-hours. This past June she used only 666
kilowatt-hours, a savings of about $100 on electricity in just one month.
If you live in an old drafty
home, you certainly need an energy audit.
If your home is fairly modern but the electric bill seems too high in
the summer, or if your air conditioner seems to be running all the time and you
are still not comfortable, or if your attic is hot enough to bake bread, you
may also have room for improvement. An
insulation company can make recommendations, which is fine if you already know
that you need insulation, but if you are not quite sure what you need, an
independent energy auditor can evaluate your house and find out exactly where
you are wasting energy and save you hundreds of dollars a year on electricity. Go to RESNET, Residential Energy Services
Network, to find an auditor who is not selling anything but advice.
I know insulating your house
is not very sexy, but it’s the most important energy conservation move you can
make, reducing your carbon footprint and saving money at the same time. Letting your conditioned air disappear into
the atmosphere is like icing down your beer and leaving the ice chest
open. It’s just not cool.