[waterfilters]

Unfortunately, Aqua Guard does not make water filtration products anymore.

We have been able to determine replacement filters for some of their models but have not been able to determine replacements o-rings and wrenches.

Here are the o-rings we carry:
http://www.waterfilters.net/Parts-Accessories/O-Rings/O-Rings.htm
These are made for Pentek, Ametek, US Filter, Culligan, & American Plumber housings so I cannot guarantee they will fit your Aqua Guard housing.

Manufacturers generally recommend changing your entire system every 5-10 years in order to prevent leaking due to wear and tear on the system. If replacing your system is an option, we carry several whole house systems:
http://www.waterfilters.net/Filters/wholehouse/wholehouse.htm
The larger the system, the greater flow rate there will be going through the system. The larger filters also last longer than the smaller filters.
The first row of sediment filters (the white ones) on this page is good for well water. The 2^nd row of filters is NOT good for well water because they can break down depending on what is in your water. We have replacement parts for all of these systems.