With the help of an energy conservation
analysis, we can lower our demand for electricity which then lowers the
amount of fossil fuels the power plant must burn. This in turn lowers
the carbon dioxide emissions from the power plant but also means that
less coal must be mined. Therefore, less fuel for mining equipment is
used and CO2 emissions are lowered even more. As you can see, the small
steps we take at home can have a much larger effect than we might at
first believe.
Heating and Cooling Systems
For the average home, the heating and
cooling systems use 30-60% of the total energy consumption. With energy
prices on the rise, it is more important than ever to ensure the home is
as efficient as possible. The easiest way to save money in this area,
is to install a programmable thermostat if you have an older control.
You can also explore other methods of cooling the home such as a whole
house fan.
Most homeowners are talked into
replacing their hvac systems to save money. While it is true that a new
hvac system can be more efficient, it may not always be the best use of
limited funds. Usually it is better to spend the money on lowering the
home's heat gain or loss. Then, your energy savings can help you to pay
for those other home improvements such as replacing the hvac system.
Improvements to lower the home's heat gain/loss will also allow you to
purchase a smaller system when the time comes. This will save you a lot
of money!
Start at the top
The attic is a good place to start your
energy conservation analysis. If you have little or no insulation,
installing or adding more can significantly reduce your home's energy
use. You can even add insulation value to your walls and ceilings by
painting. With modern coatings and paint additives, you can actually
lower the heating and cooling needs of your home by painting. The next
time you paint, insulate at the same time.
You should also ensure that the attic
has sufficient ventilation. An attic that is not properly ventilated is
hotter than one that is. The heat that builds up in the attice is then
transferred to the inside of the home through the ceiling. This, in
turn, causes the home's air conditioner to run longer and your
electricity bill to go up. This can not only save you energy dollars but
can make your home last longer.
If the access to the attic is located in
a conditioned space, you should ensure that the hatch is insulated. It
should also be sealed with weatherstripping or an attic hatch cover.
The home's exterior
Another factor that affects the heat
gain or loss of the home is air leaks. You can usually find these by
feeling the air come into the home on a windy day.
Old single pane windows are one of the
largest sources of these drafts. They typically have wooden frames that
have shrunk and leave gaps for the air to enter. If you cannot afford to
replace them (or if you rent the home), you can purchase kits to seal
them in the winter. These kits usually consist of a clear plastic film
and doublesided tape. They are inexpensive and can save you 5-15% on
your heating bills.
Another common source of these drafts
are the outlets and switch boxes located on exterior walls. You can
purchase foam gaskets to place behind the cover plates. They are
inexpensive and will pay for themselves in less than one heating season.
Exterior doors are another common source
of these drafts. This can usually be cured by weatherstripping around
the doors and installing a sweep at the bottom of the door. Both of
these things are inexpensive but effective.
Another factor that affects the heating
and/or cooling load for the home is the amount of sunlight that enters
the home. Have you ever gotten into a car that has sat in a parking lot
on a sunny day? If you have, then you have witnessed passive solar
heating. This may be good when the weather is cold but when you are
trying to keep your home cool it is not. It can be a delicate balance
between allowing enough light into the home and increasing the load on
your air conditioner.
There are options to solve this problem
such as replacement windows with a "low e" coating or dynamic window
shades. These blinds or shades can be operated by motors and controlled
automatically to keep the warm sunlight out. These units can also be
integrated into a home automation system and open/closed based on the
temperature in the home.
Home appliances
Next, you should continue your energy
conservation analysis by examining your home's appliances. They
typically account for about 20% of the home's energy use. The
refrigerator, clothes washer, and the clothes dryer are the major users
of this energy. If the appliances are more than 10 years old, you should
plan on replacing them with energystar qualified units.
The refrigerator's energy use can be
minimized with routine maintenance. The coil on the unit which is either
mounted on the bottom or the back of the unit should be cleaned at
least once per year. This is a simple matter of removing the dust and
dirt with a vacuum cleaner.
You should also test the door gaskets on
the refrigerator and freezer. This can be done by placing a dollar bill
in the door opening, closing the door, and trying to pull it out. If
the dollar bill comes out easily, the gaskets should be replaced. It is
an easy diy project.
On the clothes washer, you can save
energy dollars by lowering the water temperature. It is even better if
you wash your clothes in cold water. With advances in detergents, we can
now get our clothes clean without using hot water and they will even
last longer.
The lint trap on the clothes dryer
should be cleaned before every load. You should also inspect the vent
for buildup of lent at least once per year.
Saving on the cost of heating the home's water
Your home energy conservation analysis
should continue by examining your water heater. The home's water heater
can account for about 13% of the home's total energy use. If you have an
electric storage heater, then, the thermostats should be set to 120 F.
You can also install a blanket to minimize the standby losses. You can
also install a timer so that the heater only maintains the water
temperature at programmed times during the day.
You may also want to consider replacing
the old unit with a tankless hot water heater or a heat pump water
heater and save even more. Another option is to install a drain water
heat recovery system.
Saving on lighting the home
The next thing to consider in your
energy conservation analysis is your home's lighting systems. Nobody
wants to sit in the dark or go back to using candles but their are some
upgrades that you can do to reduce the amount of electricity required.
The home's interior lights typically use 11% of the home's energy. This
can be reduced with advanced technology such as compact flourescent
bulbs, LED lighting or through passive lighting such as roof windows.
Electricity thieves
Finally, your energy conservation
analysis should consider electric loads that are spending your hard
earned money even when you think they are off. These are commonly called
"phantom loads" and they are prevalent in every home. All of those
little lights on appliances, tv, computers, power strips, etc. use
electricity and the cost can add up to be significant.
Even in standby modes, many appliances
can use 50% of the electricity that is required when they are on. These
loads can be conveniently turned off and on with the installation of
green switches, smart power strips, or occupancy sensors. The savings
can be from 25-45% on the utility bill!
Implementing these ideas
After completion of your home's energy
conservation analysis, you can implement these energy saving ideas
easily. Instead of just randomly picking things to do, you should come
up with a list of priorities based on the characteristics of your home
and the climate in which you live. For example, it makes no sense to
upgrade your hvac system if you live in an area where you don't use it
very often.
If you would like more assistance in
conserving energy, you can utilize our consulting services. For a small
fee we will assist you in performing an energy conservation analysis as
well as designing a customized plan for your home or business.
