Watts WH-LD Review – Get Rid of Dirt and Rust!

Struggling with dirt and rust in your house water? That’s why we have decided to review the Watts WH-LD water filter. Sometimes the quality of the water that arrives at our homes may not be the best. Even if we don’t intend to drink it, particles in the water may hurt the performance of some equipment like water heaters.

In these cases, the best solution is to install a whole house filter. For one, it saves you the trouble of installing individual filters in all your water outlets. Furthermore, it works with other filters that you do have installed and improves their efficiency. Without further ado, let us introduce the Watts Premier WH-LD Whole House Filter.

Watts WH-LD Premier Whole House Filter System Review

As the name indicates, the Watts WH-LD is meant to filtrate water for the whole house. Unlike the slow reverse osmosis water filter system, it is not installed only in your kitchen. You should also keep in mind that the WH-LD will not remove substances such as chlorine or fluoride from the water, neither will it eliminate microorganisms.

What the WH-LD does is remove sediments and particles, like dust and rust, from the water that arrives at your home through the city water supply. It uses a 50-micron sediment filter for that purpose.

This system is designed by Watts Premier, a company that specializes in water filtration systems. It was founded in 1989 and is in turn part of the larger company Watts Water Technologies, founded in 1874.

The only other version of the WH-LD is the Full Flow Whole House System, which features a pressure release valve to make it easier for the user to replace the filter. It also has a significantly higher flow rate.

Who Is This Water Filter For?

Before purchasing the Whole House Filter, you should be aware that it will require some expertise to install it, and it will not be easy to uninstall it, either. So, if you are considering a temporary solution or one that you can carry around easily, this system is not for you.

Also, keep in mind that this type of filter will not remove microscopic organisms or soluble impurities from the water. If you’re worried that your water might be contaminated with bacteria or viruses, or toxic substances like arsenic, cadmium or chlorine, this system will not help you filter them out of the water.

What this system will do is remove small particles like dust, sand or rust. It will help any water equipment you have in your home, like the boiler, function more efficiently. And if you are also concerned about water contamination, there is no problem with installing additional filters, for example, in your kitchen. In fact, the WH-LD will help other filters do their job by preventing them from getting clogged with sediments.

Finally, we must say that if you are looking for an affordable solution to eliminate sediments from the water, this filter is the way to go.

What’s Included?

The packaging of the Whole House Filter is pretty straightforward. It features a filter housing with a built-in bypass valve, a filter wrench for the filter housing, and 3 sediment filters, which is nice because it will save you the trouble of ordering the first two replacements.

Finally, the box also includes a manual for installation and maintenance of the WH-LD. These contents are not enough for you to perform the installation, so you will have to purchase some additional tools if you don’t own them already.

Overview of Features

The WH-LD is quite small and does a pretty good job filtering the water for your entire house considering its size. It weighs only 4 pounds and measures 14x6x6 inches.

This filter is meant to be installed directly after the water main and before your water heating system, as it cannot handle hot water. The temperature of the incoming water should be between 40º F and 100º F.

You should also consider the filter’s water supply pressure requirement. Water from the supply line should range from 20 to 100 psi. Similarly, the water’s pH should be between 5 and 10.

The installation of the filter may be somewhat permanent, but the included bypass valve is helpful if for some reason you wish to stop filtering the water. The other case when this valve is used is for when you have to replace the filter cartridge.

In terms of sediment filtration, the WH-LD performs admirably and delivers a great value for the price. It is also NSF certified, which is a sign of quality and reliability.

How to Use It

Installation of the WH-LD requires some expert plumbing and may even require some welding, so if you are not 100 percent confident, it is better to ask for help from a friend or a professional.

Apart from the items included in the box, the minimum recommended tools for installation are:

  • Hacksaw or pipe cutter
  • 2 crescent wrenches (3/4” or 1/2”)
  • Low grit sandpaper
  • Thread seal or Teflon tape

You may also need to purchase pipe fittings depending on the type and size of your pipes. In addition, Premier advises the users to install the filter indoors, where it will be safe from the wear and tear caused by exposure to the elements.

A handy installation guide can be found in the WH-LD manual.

Maintenance-wise, you should only need to replace the filter every now and then. The recommended replace interval varies from 3 to 6 months, where 3 months corresponds to a water with more sediment and 6 months to a cleaner supply water. Replacing the filter is easy, thanks to the embedded bypass valve.

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If you’re looking for a filter that eliminates chlorine from the water, along with bad tastes and odors, the WH-LD is not the best solution for you. You might be better off with a carbon filter like the Aqua-Pure AP903, which besides purifying the water also has an impressive flow rate of 20 gallons per minute (GPM).

However, the AP903 does not do well with dirty water, or water full of sediments, so using a pre-filter is recommended. At the end of the day, the two filters might even work well together.

If water flow is your only concern, you can also try the relatively affordable 500221 Full Flow Whole House System, also by Premier, which outputs a mighty 22 GPM.


Water that arrives at our homes with dirt or rust can be a problem, especially if it damages your water heating system. This can happen not only if your water comes from a private well, but also from the city supply.

In these cases, you should get a whole house filter to clean your water and improve your health, as well as the lifetime of your equipment. And as far as these filters go, you’d be hard-pressed to find a water filter better at filtering sediments than the Watts Premier WH-LD, especially considering the price.

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