Graham-Stetzer Filters are very easy to install on your own. Follow these instructions to maximize filter effectiveness.
Note: Many homes may not have enough open outlets to install the number of filters needed to clean up the home. Purchase several power strips, plug your electronic devices into them, and install filters in the power strips as per the instructions below.

1. One filter should be installed in power strips where each of the following electronic devices is located:
- Hair Dryer
- Mixer
- Blender

2. Two filters should be installed in power strips where each of the following electronic devices is located:
- Personal Computer
- Laptop Computer
- Inkjet Printer
- Fax Machine
- Personal/Home Office Copier
- Entertainment Center (TV, VCR, DVD, Stereo, etc.)

3. Three filters should be installed in power strips where each of the following electronic devices is located:
- Laser Printer
- Large Office Copier

4. One filter should be installed in an outlet on each wall of the rooms you spend the most time in, especially bedrooms. Other rooms where this should be done may include living room, kitchen, den, etc.

5. Two phases of current are used to supply utility power to your home; A phase and B phase. One filter should be installed in an outlet on each phase of current as close as possible to the main electrical panel in your home. Most homes will have one electrical outlet dropped down directly from the main panel; installing a filter in this outlet will take care of one current phase. For maximum effectiveness, call your local electrician and have him/her drop another outlet down from the panel on the other phase, then install a filter in that outlet as well.

When these directions are followed, a sufficient number of Graham-Stetzer Filters should be installed to effectively clean up the average home.

Graham-Stetzer Filter Frequently Asked Questions

1. What do Graham-Stetzer Filters do?
Graham-Stetzer Filters remove or reduce high-frequency pollutants from the electrical wiring in your home/business.

2. How can I tell if I need Graham-Stetzer Filters?
If you and your neighbors have electronic equipment connected to electric outlets you need Graham-Stetzer Filters. A handheld meter is available to measure the amount of high frequency noise in your wiring.

3. How many Graham-Stetzer Filters do I need?
It usually takes 20 filters to effectively "clean up" an average home. Homes with more electronic equipment (i.e. computers, printers, fax machines, televisions) may require more filters. View our filter installation instructions (above) for more information.

4. What is the lifespan of Graham-Stetzer Filters?
Graham-Stetzer Filters aren't like oil filters that fill up with use. They are an electronic component and should last a lifetime.

5. Do I need an electrician to install Graham-Stetzer Filters?
No. Simply plug the filters into an electrical outlet or power strip. Graham-Stetzer Filters are designed so that anyone can properly install them.

6. How do I install Graham-Stetzer Filters in my home?
View our filter installation instructions above.

7. I plugged in a Graham-Stetzer Filter and there was a spark. Is this normal?
Yes, it is normal for the filters to spark when being plugged in. This will not hurt you, your electronic equipment, or the filters.

8. I plugged in a Graham-Stetzer Filter and it started humming. Should it do this?
No. When a Graham-Stetzer Filter is humming it is overloaded. To resolve this problem simply plug in more filters. Remember, it takes 20 filters to clean up the average home. One or two filters cannot do the work of 20.