How Much To Install Water Filter Under Sink?

The cost of installing a water filter under your sink will vary depending on the type of filter you choose and the complexity of the installation process. Generally, installation should cost between $100 and $500 depending on factors such as labor costs, the size of your unit, and any additional components needed. If a professional plumber is required, additional fees may apply.

Ultimately, the amount you pay to install a water filter under your sink will depend on several factors, including the type of filter you choose, the complexity of the installation process, and any additional components needed.

What Do Under-Sink Water Filters Remove?

What Do Under-Sink Water Filters Remove
Under-Sink Water Filters

Under-sink water filters vary in the substances they remove from the water. Still, most are designed to reduce levels of contaminants like chlorine, lead, sulfur, arsenic, and other metals. Some models also filter out sediment particles and volatile organic compounds (VOCs). Depending on your needs, you can find a filter that removes different levels of substances.

How Much To Install A Water Filter Under Sink?

  • Single-filter system: Installing a single-filter system under the sink can cost anywhere from $100 to $250, depending on the filter you choose and any additional parts or labor that may be needed.
    Single-filter system
    Single-filter system
  • Dual-stage filter systems: A dual-stage filter may be the right choice if you want a more comprehensive filtration system. This filter uses two filters to maximize purification from sediment, rust, and odors. A typical dual-stage system will cost around $150-$200 to install under your sink. This includes the two filters and related installation hardware. In addition, these systems require regular maintenance to keep them functioning correctly.
    Dual-stage filter systems
    Dual-stage filter systems
  •  Reverse osmosis under-sink filters:  On average, a reverse osmosis under-sink filter system costs around $300-$400, not including installation costs. Installation for such systems can range from around $50 to several hundred dollars depending on complexity and the local plumber’s hourly rate.
    Reverse osmosis under-sink filters
    Reverse osmosis

Factors That Impact Installation Cost

  •  Additional Plumbing Required: If you need to run additional plumbing lines to reach the filter, this will add to the overall cost.
  • The Complexity of the Under-Sink Water Filter: Installing an under sink water filter can be complicated. It involves multiple steps, such as determining the location of the filter and connecting it to the cold water line and the drain line. Additionally, depending on your existing faucet setup, you may need to purchase additional parts to ensure a proper installation. If you are not comfortable with the task, it may be best to seek professional help.
  • Installation Location: It also affects the cost of the installation. The ideal location for an under-sink water filter is right after the shutoff valve before the cold-water line splits off to supply faucets and appliances.
  • Filter design: It will also affect installation cost. Under-sink water filters come in various designs, each with its installation requirements. Some models are simple drop-in devices that require no plumbing; others require additional fittings and adapters to be installed between the filter and the water line. These additional parts can add significantly to the overall installation price.
  • Labor cost: The cost of labor can vary greatly depending on the type of filter installed and the contractor you choose. Generally, it costs around $100 to $200 per hour for a professional contractor to install a water filter under your sink.
  •  Installation Supplies: Installing a water filter under the sink requires some supplies, including plumbing tape, a wrench or adjustable pliers, an adjustable wrench or pipe cutter, and plastic tubing. Depending on your water filter model, you may also need additional parts such as screws, nuts, and washers. These supplies can range from a few dollars to upwards of $300.
  • Filter size: The filter size can increase the installation cost, as in most cases, the filter case and tubing need to be customized. Generally, a standard size 10-inch under-sink unit is all needed. If you have space restrictions or specific requirements, you may need to look at sizing up or down.

Diy System Installation Vs. Hiring A Pro

Diy System Installation Vs. Hiring A Pro
Diy System Installation

When it comes to water filter systems, you can either install them yourself or hire a professional. Depending on your level of expertise and the system’s complexity, one option may be more suitable than the other.

Most DIYers have the knowledge and skills to install the system for simple systems such as under-sink water filters that attach directly to existing plumbing. All that’s usually necessary is basic plumbing knowledge, access to a few tools, and an hour or two of your time.

For more complex systems, such as reverse osmosis systems,  which require connecting additional piping and electrical components,  it may be best to hire a professional for installation. A professional will have the right tools and technical know-how to complete the job safely.

The cost of hiring a pro varies, so it’s best to get quotes from several local contractors before selecting one. On average, installing an under-sink water filter costs between $100 and $300, depending on the system’s complexity.

How Much Does It Cost to Maintain an Under Sink Water Filter?

How Much Does It Cost to Maintain an Under Sink Water Filter
Cost to Maintain an Under Sink Water Filter

The exact cost of maintaining an under-sink water filter depends on several factors, such as the type of filter you are using, the frequency of replacement, and any additional installation or maintenance fees. Generally, replacing filters costs anywhere from $20 to $200 each year, and depending on the system, you may need to replace them more often.

Additionally, if you choose a model that requires professional installation or has an extra faucet included for the filter, that can add to the maintenance cost. If you’re comfortable with DIY installation, however, it should take no more than a few hours and will usually cost less than $200 for the parts.


Should I install a faucet water filter or under sink water filter in my kitchen?

The decision between the two depends on your specific needs. Faucet water filters are less expensive, easier to install and provide a quick fix if you need filtered water immediately. On the other hand, under-sink water filters are typically more thorough in their filtration process and have larger filter capacities – meaning they can process more water before needing to be replaced. The downside of under-sink water filters is that they require more installation time and cost more.

Can I install my water filter?

Can I install my water filter
Install my water filter

Yes, you can install your water filter. The installation process typically involves removing the existing faucet and connecting a new, more advanced one to the cold-water line under your sink.

 How much is the cost to get a whole house water filter system?

How much is the cost to get a whole house water filter system
Cost to get a whole house water filter system

The cost of installing a whole-house water filter system can vary greatly depending on the quality and size of the system you choose. Generally, a mid-range system costs between $500 and $800, while more advanced systems can cost up to $2,000. Installation costs for whole-house water filter systems also vary depending on the complexity of the setup but typically range between $250 and $500.


The cost of installing a water filter under the sink will depend on the type of system you choose and the complexity of installation. Generally, budget-friendly systems can be installed for around $50 to $100, while high-end systems may exceed $500. If you are not confident in tackling the installation yourself, you should hire a professional plumber to do the job for you. This will ensure that your water filter is installed correctly and safely, so you can enjoy clean and pure water for many years.

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