Sweep away those household myths

Myths are entertaining as literature. However, when the subject is home maintenance, they can be dangerous and costly. Here are some common misconceptions about home maintenance.

Smoke alarms

Myth: Pushing the “test” button on a smoke detector is all one needs to do to ensure that it is operating properly.

Truth: The test button on a smoke detector will only confirm that the audible alarm is functional. It does nothing to determine whether the detector or smoke sensor is operating properly.

A more complete test is to check both the detector and alarm with smoke. Strike a couple of wooden kitchen matches, blow them out and then allow the resulting smoke to waft about the detector.

Another method is to use synthetic smoke in a spray can (available at hardware stores and home centers) that, when sprayed near the detector, will have the same effect as real smoke.

All smoke detectors should be tested at least once a month. Batteries should be replaced at least twice annually.

Furnace filters

Myth: A furnace filter only needs to be changed once during the heating season and once during the cooling season.

Truth: The frequency with which a furnace filter needs to be changed depends on many factors. In general, system operating time, the quality of the filter and its location all determine how often a filter should be changed. Inexpensive fiberglass mesh filters must be changed more often (typically monthly) compared with the pricier three-month pleated type.

Insulation

Myth: The more insulation the better.

Truth: Sometimes less is more.

According to the U.S. Department of Energy, attic insulation is one of the most cost-effective energy-saving improvements that can be made to a home. But installing too much insulation in an attic, wall or floor can be counterproductive.

For insulation to be most effective, air space should surround the material. Forcing material into a wall cavity will compress the material and diminish its effectiveness.

Also, when not properly installed, too much insulation in an attic can block eave or soffit ventilation, which is necessary to prevent condensation, mold and rot.

Bathroom exhaust fans

Myth: An exhaust fan is only needed in a bathroom that doesn’t have a window.

Truth: The Uniform Building Code does not require an exhaust fan in a bathroom that has a window. As a cost-cutting measure, many builders will omit a bathroom fan. The problem is that many people don’t open their windows when bathing. Moreover, an open window typically won’t adequately remove the condensation that results from showering or bathing.

All bathrooms, window or not, should contain an exhaust fan that vents to the exterior, not the attic. Operate the fan for 15 to 30 minutes after bathing to completely remove humidity, which can lead to mold, mildew and rot. If there is no exhaust fan, install one. Keep it clean and in good working order.