Keeping Your Cool
Colorados climate is just about perfect isnt
it? And it doesnt get any better than Springtime in the Rockies.
The Robins are back, flowers are poking their heads out, and the Colorado
Rockies are playing ball again. Life is sweet. The sun feels so good,
its easy to forget we will soon be complaining about the heat!
Summers are so pleasant here, in fact, that most homes dont have
air conditioningat least the older ones. But then most cars didnt
have air conditioning in the 1950s either. Would you order a new
car today without it?
If you find yourself "Sweatin To The Oldies" this summer
while just sitting and listening to the radio, here are some ideas for
chilling out at home:
- Extra insulation can yield dramatic improvement. Attics are usually
easy to add insulation to, while walls can be trickier, but not impossible.
If you dont want to disturb your vaulted ceiling, consider adding
rigid insulation on top of the roof, just under the shingles when you
re-roof.
- Deciduous trees planted in strategic locations can provide enough
shade to make a real difference. Theyll lose their leaves just
in time to give you the southern sun when you can appreciate it.
- Cross-ventilation works well on days with a breeze. Adding an operable
window or two, or perhaps a venting skylight, can exhaust the heat without
raising your electric bill.
- Windows arent what they used to betheyre much better.
High-tech window glazing can keep the heat out while letting the view
in. If you cant change the glass, heat-reflective films can be
applied to your existing glass. Various window shades can also keep
your home cooler. The idea is to reflect the sun back where it came
from. Shutters, awnings, and blinds are all efficient.
- Attic fans with the proper number of vents will exhaust the intense
heat that is trying to radiate into the house through the ceilings.
Usually installed with automatic thermostats, they are efficient, inexpensive,
and effective.
- Whole-house fans, usually mounted in the ceiling of the uppermost
floor, will bring in outside air, distribute it throughout the house,
and exhaust it out through the attic. Since our evenings are usually
cool, these fans work well at cooling the house after the sun goes down,
but they are noisy. The path of cool air through the house is determined
by which windows you open. These fans are usually multi-speed and controlled
by a timer. Be sure to open plenty of windows and doors, or
you risk down-drafting gas appliances and their dangerous exhaust!
- Ceiling fans can be helpful by providing enough of a breeze to let
your bodys own evaporative cooler work. Similar to rolling down
your car windows to keep cool, relief is seldom adequate in July.
- Evaporative or "swamp" coolers work very well (on most days)
in our dry climate. Usually mounted on the roof, they can sometimes
be located on the ground or even in an attic with special venting and
water containment provisions. If you have an attic, the cool air can
usually be ducted to the ceiling of several rooms to distribute the
"breeze" throughout the house. Similar to a whole-house
fan, you can control the path of the breeze by the windows you open.
- If you have forced-air heat, the ductwork is already in place for
refrigerated air conditioning with the addition of an "A-coil"
and a condenser unit. Since air conditioning requires air of a higher
velocity than heating, you may need to add a new multi-speed blower.
It is also a good idea to add return-air registers near the ceiling
for best efficiency. A condenser unit with fan will be located outside,
as far as fifty or more feet from your furnace. Since condensers can
be noisy, youll want to locate it where the noise will be the
least problem.
- If you dont have the ductwork, or only need to cool one room,
there are some very good through-wall air conditioning units now on
the market. They have a small condenser outdoors, and a refrigerated
blower unit which mounts to the outside wall. Inside the room, a louvered
grille mounted high on an outside wall distributes the cool air. Installation
only requires a single small hole through the wall, and the unit is
controlled by a small wireless remote, complete with thermostat. While
somewhat expensive, this air conditioner can be the perfect solution
for cooling a single room or area.
If youre undecided about which techniques to implement, remember
that they can be used in combination. Try the most energy efficient and
passive ideas first. If you still need more relief, you can add others
as the budget allows. Remember, also, to start on your project now. If
you wait until July to call an air conditioning contractor, it will be
too late for this season.
By Larry Parrish,
CR, CGR
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© Parrish Construction Co.
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