What are the dimensions and weights of the canisters?

Standard Height Depth Width ~ Weight
Single No Fittings 12" 4.5" 4.5" 5lb
Single w/fittings 12" 4.5" 6" 5lb
Single w/fittings and
14" 5" 6" 5lb
Dual w/fittings 12" 4.5" 12" 10lb
Dual w/fittings and
14" 5" 12" 10lb
Triple w/fittings 12" 4.5" 18" 15lb
Triple w/fittings and
14" 5" 18" 15lb
Leave 2" below mounted Canister for removal of Sump
JUMBO Height Depth Width ~ Weight
Single No Fittings 14" 7.5" 7.5" 10lb
Single w/fittings 14" 7.5" 10" 10lb
Single w/fittings and
18" 8" 10" 10lb 
Dual w/fittings 14" 7.5" 18" 20lb
Dual w/fittings and
18" 8" 18" 20lb
Triple w/fittings 14" 7.5" 27" 30lb
Triple w/fittings and
18" 8" 27" 30lb
Leave 3" below mounted Canister for removal of Sump

I have a Triple Canister System. What Order do I put the Filters in?

The proper order for filters is to put the Sediment filter first. This protects the more expensive filters downstream from sediment. Next would go the Carbon or Combination filter for taste and odor, followed by any specialty cartridges for iron, arsenic, nitrites, etc. If you are not in an area where these contaminants exist, leave the third canister empty for better flow.

I have a water softener. Does it go before or after the filters?

A Water softener can go either before or after the filters as long as it is put before the water enters the RV

Where should I install the regulator?

Typically regulators are put on the spigot before the hose.  This will limit pressure in the hose and the filter system as well as the RV plumbing.   If the regulator is to be left outside in the weather and elements, Stainless steel screws and oil filled gauges are recommended to prevent rust.

I am a part time RV'er. How do I store my filters when not in use?

Storage of Ceramic, SED and F-Series filters is very easy. They are not prone to stagnation, so they can be stored wet or dry, but should be in a dark, clean place when not in use. I empty the water out of the canisters and put the wet filters back in till next use. CBC-KDF filters should be stored submerged in water. The best way to store RO membranes is to put in a baggie in the refrigerator. This can be done either by putting the whole assembly in the refrigerator or by removing the membranes from the housing and putting them in a baggie.

Why does my water looks gray after I change my filter?

This is a common occurrence after changing a carbon filter, and is caused by fine carbon dust being flushed out of the cartridge. It will be gone after you run a few gallons of water through the unit.

How do I know when I should change my filter?

There are two primary indicators that will alert you to replace a filter cartridge. The first indicator is a reduction in flow rate, which is caused by a filter getting plugged with sediment. The second indicator is a little less obvious and involves your taste-and-odor filter. If you notice that the taste and/or odor of your water is not as clean as it used to be, it is very likely that your carbon filter is losing its effectiveness and needs to be replaced. This, of course, assumes that you have a carbon filter.

Why does my filter never seems to need replacing?

Well, either you are receiving extremely clean water, or your filtration system is not working properly. Make sure that you have a cartridge or cartridges in your filter canisters and that your water is flowing through them. If everything checks out, you must be getting very clean water.

Why should I filter all the water going into my RV, including the water for the toilet?

Many plumbing fixtures, both in homes and RVs, have small orifices and moving parts that come in contact with the water. Sediment and sand can wreak havoc in these fixtures, and removing the sediment is often much cheaper than repairing a plugged or damaged fixture. RV parks can have a real load of sand and sediment in the water.

Why would I need a double-canister filter setup?

There are two primary tasks that you'll want your filtration system to perform: remove sediment and improve the taste and odor of the water. While it is possible to do both with one filter, you'll get better performance if you utilize separate filters for each of these tasks. For more information, see our Learning Center: Water Filtration page.

Do filter canisters need to be upright to work properly?

No, they can be mounted in any position you want. However, cartridges containing granular carbon may have a problem if not upright. Granular carbon is subject to "channeling", in which the water forms small channels that enable it to bypass the carbon. This condition seems to occur more when these cartridges are not upright.

Why can't I have a clear canister as one of my two in a dual-canister system?

You can, of course, and we sell them that way. However, if you are planning to set up your canisters outside your RV where a lot of light will be available, we don't recommend you use a clear canister. The reason for this is that the light will promote algae growth, which will prematurely plug up your filter. If you want to include a clear canister, you should place it somewhere that is protected from light such as a bay or under the sink.

I have a red button on the top of my filter canister. What is it for?

The red button enables you to relieve the pressure in your water system when you change your cartridge. It also allows air to enter the system, which helps you remove the sump. (Be sure to turn off the water before changing cartridges!)

Is your Gold-Series filter the same as the name brand one in my RV?

The Hydro-Flow Gold-Series filter is an exact replacement for the Hydro-Life, Aqua-City, and Shurflo filters found under the sink on many coaches. In fact, it is made in the same factory as those units.

I recieved two sediment cartridges with my dual-canister system. Should I use them both at once?

No, we provide a spare sediment cartridge with our system packages. You should use one sediment cartridge and one one carbon cartridge in your dual-canister system. The carbon cartridge should last twice as long as the sediment cartridge, so you'll use two sediment cartridges for each carbon cartridge.

On a pressure regulator with a gauge, which pressure does the gauge read?

The pressure regulators we sell that have a gauge are adjustable. The gauge shows the regulated pressure, which is the pressure you'll get in your RV. The gauge enables you to set the exact pressure you want.

I've seen some nifty "curly-cue" hoses. What's wrong with them?

Most of those hoses are clear, which means they are subject to algae growth as they lay out in the sun. Algae plugs up filters fast.