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What’s a Water Heater Expansion Tank, And Why Do I Need One?

A water heater expansion tank is a small, but important, part of your home's plumbing system. It's there to provide a space for excess water and air to expand as they heat up in your water heater. In this blog post, we will discuss what a water heater expansion tank is. We'll also go over how it works and why it is important to have one installed in your home.

The Role of an Expansion Tank in a Plumbing System

A water heater expansion tank gives space for excess water and air to expand as they heat up in your water heater. As the water and air heat up, they expand and enter the expansion tank. That relieves the excess pressure on your water heater and pipes. When the water and air cool down, they contract and create a vacuum in the expansion tank. It fills up with air from the atmosphere. This helps maintain the system's pressure and helps your water heater work right.

If you don't have an expansion tank, the expanding hot water and air have nowhere to go. This can cause lots of issues, such as stress on your water heater, which can lead to damage and even failure. Without an expansion tank, your water heater may not be able to keep the temperature stable. That can lead to lower efficiency and higher energy bills. On top of that, the extra pressure can lead to noisy pipes that might even burst, resulting in costly repairs.

Click this link for a video explaining what that big metal bubble sticking out of your water heater is.
What and Expansion Tank Does For You

An expansion tank provides a place for the expanded water to go, which helps even out the pressure in the system. This can help prevent damage and extend the life of your pipes, fittings, and other components. It can also help your fixtures last longer because it eases the stress high pressure can cause. Finally, an expansion tank can help to keep your water heater working the way it should. As the water heats up, it expands and can increase in volume. An expansion tank allows for that increase. That can lower the risk of damage and increase its efficiency.

In most cases, the plumbing code requires an expansion tank for a new or replacement water heater. Depending on where you live, you may even need to add an expansion tank to your existing water heater. Some places make it a legal requirement to protect against the risk high pressure brings with it. That makes it crucial to check if your system needs an expansion tank.

Click this link for a video discussing how high water pressure can destroy your plumbing and low water pressure can cause your pipes to clog.
If you're not sure whether your home needs an expansion tank it's a good idea to consult a licensed plumber. They can assess your plumbing system and determine if an expansion tank is necessary. They can also help with the installation of the tank if needed. If you don’t have a plumber you trust, Any Hour Services would be happy to help. You can give us a call or schedule an appointment online.
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Logo for Any Hour Electric, Plumbing, Heating & Air featuring a smiling technician with crossed arms, a stopwatch, and a bold, professional tone.

Any Hour Services

1374 West 130 South, Orem, UT 84058

© Copyright 2024 Any Hour Services LLC
© 2024 Any Hour Services LLC

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Our pricing is fair and transparent. We use a fixed-price guide that reflects the time, materials, and real costs of running a dependable home services business. No hourly rates. No inflated prices based on where you live. We focus on what it takes to get the job done—not on how much we can charge.

Before we price your drains or excavation project, our expert technician will perform an in-home assessment to evaluate the tasks required. We only charge for what’s necessary—no fluff, no extra costs. This allows us to pinpoint areas where we can save you money without sacrificing quality.

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A: We price the job—not the clock. Hourly rates can be unpredictable, leaving you unsure of the final cost until the job is done. We believe in upfront, fixed pricing based on the work itself—not guesswork. You won’t pay for delays or mistakes, and we hold ourselves accountable to ensure there are no surprises.

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We prefer to price based on the job and not what other companies charge. Hourly rates can lead to unexpected costs for homeowners, making the final price unpredictable. By pricing the work itself, we make sure you’re only paying for what’s actually needed—keeping things fair and efficient.

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Requesting a quote is simple. Contact Any Hour Services, and we will assess your needs, providing a transparent estimate for the repairs.

We also provide FREE estimates and second opinions for major plumbing and excavation projects like repiping, sewer or water line replacements, remodels, and outdoor drain installs. Our team will evaluate the job in person, explain your options, and give you clear, upfront pricing. No hourly rates. No surprises. Just honest answers and expert service.

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Yes, you can request a quote online—our team at Any Hour Services responds promptly to every inquiry.

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We offer a $29 Drain Clear for single, easy-access drains. A licensed plumber will inspect the issue, clear out buildup like grease or debris, and get things flowing again. It’s a simple, affordable way to fix slow drains and help protect your plumbing from bigger problems down the line.

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Yes, we provide FREE estimates for sewer main line replacements. If you are looking to replace your sewer main line, one of our expert technicians will come to your home and inspect your sewer main line, before showing you your options. Call us if you have questions about replacing your sewer main line—we’re here to help!

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You can pay for your service with cash, check, or any major credit card. We collect, in full, upon completion of the project. If you would like to make monthly payments, we have many financing options available through 3rd party finance companies (On Approved Credit). Your technician can talk to you about your options when they give you pricing options for the work you want done.

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Our phone staff are not expert technicians, so they can’t quote prices that would be accurate to your project’s needs. A trained technician needs to see the job firsthand to give you a clear, upfront price. Quotes over the phone are a guess, and we prefer transparency over uncertainty.

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Ballpark prices can be misleading. Until we see the job, we can’t quote your final estimate accurately. Other companies may give an estimate range, but that often leads to additional costs and surprises later. Instead, we focus on giving you a fair price once a trained technician can assess the job properly.

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A: We have a small dispatch fee to send our technician to your home. They’ll arrive in a truck stocked with thousands of parts, ready to complete most jobs the same day. After a thorough evaluation, your technician will explain the issue, walk you through the recommended fix, and show you your options and final price. No hourly rates. No surprises. Just a clear, upfront price before any work begins.

Call Now

Pricing FAQ

A:

Our pricing is fair and transparent. We use a fixed-price guide that reflects the time, materials, and real costs of running a dependable home services business. No hourly rates. No inflated prices based on where you live. We focus on what it takes to get the job done—not on how much we can charge.

Before we price your plumbing job, our licensed plumber will perform an in-home assessment to evaluate the tasks required. We only charge for what’s necessary—no fluff, no extra costs. This allows us to pinpoint areas where we can save you money without sacrificing quality.

Call Now

A:

We price the job—not the clock. Hourly rates can be unpredictable, leaving you unsure of the final cost until the job is done. We believe in upfront, fixed pricing based on the work itself—not guesswork. You won’t pay for delays or mistakes, and we hold ourselves accountable to ensure there are no surprises.

Call Now

A:

We prefer to price based on the job and not what other companies charge. Hourly rates can lead to unexpected costs for homeowners, making the final price unpredictable. By pricing the work itself, we make sure you’re only paying for what’s actually needed—keeping things fair and efficient.

Call Now

A:

Water heater replacements vary. Often, older units require updates to meet safety standards. Common items missing from many water heaters are flexible gas lines, expansion tanks, earthquake straps, gas sediment trap, upgrade exhaust venting, etc.

For an accurate quote, one of our licensed plumbers will inspect your existing system and provide a FREE estimate.

Call Now

A:

Our phone staff are not licensed plumbers, so they can’t quote prices that would be accurate to your project’s needs. A trained plumber needs to see the job firsthand to give you a clear, upfront price. Quotes over the phone are a guess, and we prefer transparency over uncertainty.

Call Now

A:

Ballpark prices can be misleading. Until we see the job, we can’t quote your final estimate accurately. Other companies may give an estimate range, but that often leads to additional costs and surprises later. Instead, we focus on giving you a fair price once a licensed plumber can assess the job properly.

Call Now

A:

We have a small dispatch fee to send our plumber to your home. They’ll arrive in a truck stocked with thousands of parts, ready to complete most jobs the same day. After a thorough evaluation, your plumber will explain the issue, walk you through the recommended fix, and show you your options and final price. No hourly rates. No surprises. Just a clear, upfront price before any work begins.

Call Now

A:

Yes! We offer FREE in-home estimates for major projects like water heater installations, water softeners, and repiping—without any dispatch fee. Our licensed plumber will assess the job, explain your options, and provide a clear, fixed price. No surprises or hourly rates—just honest, reliable service. Schedule your FREE estimate today!

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No, our plumbers don’t quote a price until they have seen your plumbing project. Once they quote a price, it doesn’t change, no matter how long it takes. At any time, if you want to add more tasks to your plumbing project, your plumber will let you know how much it would cost to perform the extra work.

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You can pay for your plumbing service with cash, check, or any major credit card. We collect, in full, upon completion of the project. If you would like to make monthly payments, we do have many financing options available through 3rd party finance companies, OAC. Your plumber can talk to you about your options when they give you pricing options for the work you want completed.

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