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What’s a Water Heater Drain Pan and How to Choose One?

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  • What’s a Water Heater Drain Pan and How to Choose One?
Water Heater Drain Pan

A water heater drain pan is an integral part of a water heater setup. It’s a shallow round or square container that rests under a water heater. As the name suggests its purpose is to collect the water in case of any leaks from the heater or from the temperature and pressure control valve.

Mostly, leaks in the water heater are caused by the hard water. So, a water softener can be used to prevent the deterioration of the water heater from hard water. Anyways, back to the topic, if the pan fills with leaked water, it runs through the pipe and goes down the drain. 

Why a Water Heater Drain Pan is necessary?

Operating a water heater without a water heater pan is literally a call to trouble. It can prove to be a potential disaster. Imagine an unnoticed water seepage from your water heater finds its way to your house foundation. Over time this will cause damage that will be hard to reverse. So, a water heater drain pan is a safety net that protects you from a lot of trouble. 

Moreover, some buildings are legally required to install a water heater pan as per their rules and regulations. So, make sure to check it before deciding against it.

Things to Consider Before Selecting an Appropriate Water Heater Drain Pan

There are a few things to take into account when choosing a water heater drain pan:

Size

The drain pan needs to be big enough to fit your water heater’s measurements. Before buying a pan, measure the height and diameter of your water heater. To make sure it catches any possible leaks, the pan’s diameter should be at least two inches greater than the water heater’s. A pan with a 26-inch diameter would be perfect if, for example, your water heater has a 24-inch diameter.

Material

Stainless steel, aluminum, or plastic are the three materials most commonly used to make drain pans. Each has advantages and disadvantages of its own:

  • Plastic

These pans are affordable, lightweight, and corrosion-resistant. But over time, especially in hot weather, they could shatter or distort.

  • Aluminum

Aluminum pans are lightweight, rust-resistant, and more durable than plastic ones. Although they can bend or deform when subjected to severe force, they are a great option for the majority of home applications.

  • Stainless Steel

These pans are the strongest because they are made of stainless steel, which resists impact and corrosion. They are frequently utilized in risky or commercial environments. They are, therefore, also the costliest choice.

Depth

To make sure that the water in the drip pan of the water heater won’t overflow, its depth is important.  1.5 inches depth is recommended. For regions where leaks can occur 2-3 inch depth is recommended.

Drain Outlet Size and Position

A pre-cut hole for attaching the water heater drip pan drain line is typically included with drain pans. Make sure the location and size of the outlets work with the plumbing in your home. A 1-inch or 1.5-inch outlet is normal for a regular drain pan. However, you may need plumbing services to change the drain line or use an adapter if your current drain line does not match.

Installation Tips

The efficient operation of your water heater drain pan depends on proper installation:

  • Positioning 

The heater drain pan must be positioned in the middle so it can gather all the water from the leaks.

  • Drain Line Connection

Make sure the drain line is firmly fastened to the pan’s outlet. It should channel water to a secure location, like a floor drain or an outside area. To encourage water flow, the line should have a downward slope.

  • Securing the Water Heater

In certain installations, particularly in regions vulnerable to earthquakes, it is necessary to secure the water heater inside the pan to stop it from moving or shifting.

Conclusion 

In the end, it is safe to say that the water heater drain pan is a protective pin against disastrous water damage. Whether you’re replacing your old system or installing a new water heater, PrimeLine Plumbers is here for assistance. From selection to installation to maintenance advice, we will make sure you will have an optimally operating water heater along with its drain pan. 

FAQs

How to get water out of the water heater pan?

if the drain valve nozzle is the culprit you can tighten it to stop the water inflow. Or you can check the pan drain line to see if its opening is clean or clogged. 

Water heater drip pan installation cost?

On average it costs $200 to $600. As the drip pan is part of the evaporator coil, if it has to be changed as well then the cost could go over $2000. 

What size drain pan for the water heater?

Its size should be 2 inches larger than the water heater. The size should be bigger to accommodate any water leakage from the drain nozzle or T&P valve.

Are you supposed to drain your water heater?

Yes, draining your water heater helps in the removal of sediment build-up improves the efficiency of your water heater, and saves you money on maintenance.

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