What Is An Energy Recovery Ventilator?

Energy Recovery Ventilator.
Photo courtesy of RenewAire

In a home with a tight "envelope," or well-insulated walls, windows and doors, an Energy Recovery Ventilator (ERV) can help to reduce energy use and improve indoor air quality.

Duane Amundson, an energy savings consultant, wrote an article for Greenspiration Home that describes the function of an ERV and discusses the benefits of using one:

"An ERV exhausts stale air with its fan, and brings the same volume of fresh air back in. A built-in heat exchanger allows the fresh air to be semi-conditioned by the exhaust air, so that you aren’t just tossing out air you’ve already paid to heat or cool." Read the full article here.

Using a unique peer-to-peer approach, Greenspiration Home is an online publication dedicated to educating homeowners about building, renovating, and decorating green. 

Compact Fluorescent (CFL) Bulb Styles

The original spiral is
still the most popular

We all know the cost- and energy-saving benefits of CFLs, and advancements in technology have resulted in warmer, softer light. But that spiral...it doesn't look good in every fixture! Did you know that there are many different styles of CFL bulbs, including some that work with dimmer switches and three-way sockets?

In addition to the original (and admittedly still popular) spiral, there are A-shaped bulbs that mimic the look of the traditional incandescent, and round globe lights (often seen in vanity lighting and ceiling pendants). Candle and tubular styles work well in decorative fixtures and wall sconces, while larger post bulbs are typically designed for outdoor use. The globe surrounding these styles also makes them easier to clean than the traditional spiral.

Reflector bulbs are perfect for
recessed fixtures

Reflector bulbs, with a narrow base and a wide, funnel-shaped body, are designed for recessed light fixtures. Available in both indoor and outdoor styles, the outdoor bulbs are typically larger due to the weatherproofing needed to protect them from the elements. One thing to keep in mind; outdoor bulbs should not be used in lights with motion sensors, photocells or timers, as these applications can shorten the life of the bulbs.

What Is a Home Energy Audit?

It would be great if our homes came with an Energy Monitor
like the one on this Toyota Prius! From Flikr

If you've recently moved into a new home, or have noticed a sudden spike in your current home's utility bills, it may be time for a home energy audit. (Also called an assessment.) This in-depth test can help you pinpoint areas in your home that need to be upgraded, repaired or replaced.


Before the Energy Audit

You may have already noticed a gap in the weatherstrip around the front door, or windows with increased condensation. Ask family members if they've noticed any drafts, or rooms that always seem to be a different temperature from the rest of the house. Have copies of utility bills for the past year, or ask your utility to provide a summary. All of this information will help the auditor zero in on problem areas.