Choose the Best Kitchen Faucet Connection for Your Needs

Installing a new kitchen faucet can seem like a daunting task, especially when you start looking at all the different connection types available. Should you go for a simple compression fitting or opt for a more heavy-duty soldered connection? And what about screw-on, push-on, or other connector types? With so many options, it can be tricky to determine which route is best for your needs.

We'll also discuss key factors to keep in mind as you evaluate connections for your next faucet installation project. Armed with this information, you'll be able to confidently choose the right connection for your skill level, budget, and kitchen needs.

Common Kitchen Faucet Connection Types

Compression Fitting Connections

Compression fittings are one of the most popular and widely used connection methods for kitchen faucets. This type of fitting uses a nut and sleeve to form a tight seal around the supply line when tightened. To install it, you simply slide the nut and sleeve over the supply line, push the line into the faucet shank, and tighten down the nut to engage the seal.

Compression fittings don't require any soldering, making them a great choice for DIYers. They also allow some flexibility if your supply lines don't line up perfectly with the faucet holes. On the downside, compression fittings may not be quite as durable or leak-proof as soldered connections over many years of use.

Soldered Connections

Soldered connections are considered the most secure and long-lasting faucet connection option, but they do require some plumbing skill to install. With this method, you use a torch to heat up soldering metal, melting it around the joint to seal the water supply line to the faucet shank.

While soldering takes practice, it creates an extremely tight seal that is less likely to leak or come loose over time. Just be sure to prep the area first by removing any flammable materials. The heat of the torch can damage countertops or sink materials if you're not careful.

Screw-On Connections

Screw-on faucet fittings use a male-threaded supply line that screws directly into a female-threaded opening in the faucet shank. An o-ring or gasket provides the seal between the threads. If your faucet doesn't have a threaded supply connector, you may be able to swap it out or use an adapter.

Screw-on connections are simple to install and remove by hand, without any specialized tools. However, the bumps of the threads may make it easier for mineral deposits to build up over time. Be sure to regularly clean the threads to prevent leaks.

Push-On Connections

Push-on or "quick connect" fittings use o-rings or gaskets to form a tight friction fit seal when you push the supply line into the faucet shank. A release clip holds the line in place but also allows you to detach it with light pressure.

Of all the connection methods, push-on fittings are typically the quickest and easiest to install. However, the supply lines can pull out more easily if not fully inserted. Regularly check that the lines are still securely seated in the shank.

Other Connection Types

While the above are the most common, there are a few other kitchen faucet connection methods to be aware of. These include flare fittings, which use a flared end of a supply tube fitted to a flare adapter. There are also barb fittings, compression sleeves, and proprietary quick-connect designs made by specific faucet brands.

Factors to Consider When Choosing a Connection

With so many connection options available, think about the following factors as you evaluate the best choice for your kitchen faucet install:

Durability and Longevity

If you want a very durable, leak-free connection that will last for decades, soldered joints are your best bet. Compression and screw-on fittings have a shorter lifespan, while push-on types have the highest risk of loosening over time.

Ease of Installation

Push-on and compression fittings don't require any special skills or tools to install. Screw-on is nearly as simple for the average DIYer. Soldering has a steeper learning curve and requires safety equipment and torch handling skills.

Need for Special Tools

Compression and push-on connections just need basic wrenches and pliers. Screw-on connections require threaded supply lines and fittings. Soldering needs a torch, flux, soldering metal, heat protection equipment and more.

Frequency of Use

For an auxiliary kitchen faucet that won't get heavy use, a push-on or compression fitting may suffice. For your main kitchen sink faucet, opt for soldered or screw-on connections that can withstand constant flow and pressure.

Skill Level of Installer

If you're an experienced DIYer, don't be afraid to attempt soldering. Novices should stick with push-on, compression or screw-on connections for an easier install. When in doubt, call a pro to handle soldering.

Special Considerations

When selecting a kitchen faucet connection type, keep the following special considerations in mind:

Connections for Water Filtration Systems

If installing a faucet-mounted water filtration system, choose a connection like a screw-on or compression fitting that allows you to easily detach the filter for replacement. Push-on connections won't secure the filter tightly enough.

Connections for Smart/Voice-Activated Faucets

Faucets with touchless, motion sensor or voice-activated features often use quick-connect supplies for easy installation. Make sure your connection type is compatible with the technology in the faucet.

Motion Sensor and Touchless Faucet Connections

Motion sensor and touchless faucets need a highly secure, leak-proof connection that can withstand constant water pressure. Soldering is ideal, though compression fittings also work well.

Multi-Functional Faucets

If your faucet has a pull-down sprayer, soap dispenser or other add-ons, make sure your supply lines have enough length and flexibility to accommodate the extra features. Compression fittings allow some adjustability.

Water-Saving Faucet Features

Low-flow faucet aerators can reduce water usage. Look for connections that seal tightly to prevent leaks, as low water flow can loosen push-on connections over time.

Warranties and Durability

Review faucet and connection component warranties before purchase. Soldered joints often last longest. Make sure all parts are high quality and durable.

Installation Tips and Tricks

Installing a kitchen faucet? Here are some helpful tips for a smooth install with common connection types:

Compression Fittings

Soldered Connections

Screw-On Fittings

Push-On Fittings

When to Call a Professional

While many kitchen faucet installations are totally DIY-friendly, there are a few instances when you may want to call in a professional plumber:

• If you need to cut into drywall to access supply valves or lines
• For any gas line modifications required for an instant hot water heater
• If you don't feel comfortable soldering connections
• For very complex installations with multiple faucets and supply lines
• To install a touchless or technologically advanced faucet

Professional plumbers have the skills, tools and experience to handle tricky faucet installs and modifications to existing supply plumbing in your home. They can also provide maintenance and repairs down the road if you experience any leaks or problems.

Search online reviews and ask neighbors for a recommended local plumber. Get estimates from at least three pros before hiring. Average costs range from $45 to $150 per hour.

Finding the ideal kitchen faucet connection system for your sink depends on your skill level, budget and the complexity of the job. For basic DIY installs, compression, push-on and screw-on fittings are great hassle-free options. While soldering requires more expertise, it's worth the effort for a rock-solid, leak-free connection that will last.

Carefully consider the pros and cons of each connection type. And don't be afraid to call in a professional if you're unsure about taking on a faucet installation yourself. With the right connections selected and properly installed, your new kitchen faucet will provide reliable service for years to come.