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How Much Does it Cost to Replace a Water Heater?

how much does it cost to replace a water heater

If your water heater is on its last legs, you’re probably wondering how much it will cost to replace it. Water heaters come in a variety of sizes and models, so the cost can vary quite a bit. In this blog post, we will give you an idea of the factors that go into water heater replacement costs for Portland homes and what to ask when getting an estimate.

What You Need to Know:

  • Tank water heater replacement in Portland typically costs $3,000 to $4,000 installed.
  • Tankless replacement runs $7,000 to $9,500 installed.
  • Type of unit, permits, disposal, and unexpected work can affect your final cost.
  • If your unit is 8 to 12 years old and having trouble, replacement is usually the better investment.

Is it Better to Fix or Replace a Water Heater?

In most cases, it is more cost-effective to simply replace your water heater rather than trying to repair it. This is because water heaters are not designed to be repaired, they’re built to last for a specific amount of time and then be replaced. Most water heaters have a lifespan of about 8 to 12 years, so if yours is around this age, it is probably time for a replacement.

Of course, there are always exceptions to the rule. If your water heater is relatively new and you have not been having any problems with it, then it may make more sense to try and repair it rather than replace it.

Read next: When to Replace Your Water Heater

How Much Does it Cost to Install a Water Heater?

For most Portland homes, the cost to replace a hot water heater falls into two ranges:

  • Tank water heater: $3,000 to $4,000 installed, for parts and labor. 
  • Tankless water heater: $7,000 to $9,500 installed, for parts and labor. 

These figures are estimates that cover equipment and labor for a standard replacement. Keep in mind that your installation could be more expensive due to additional plumbing costs and/or tank disposal.

In the next section, we’ll cover the factors that could cause your final hot water heater replacement cost to be higher or lower. 

Read next: How Long Do Water Heaters Last?

What Factors Affect the Cost of Replacing a Hot Water Heater?

There are many factors that can affect how much it costs to replace your water heater. Keep in mind the factors below as you budget and discuss with your HVAC professional about your options.

  • Type of water heater unit
  • Type of fuel
  • Labor and accessibility
  • Permits
  • Disposal of your old unit
  • Unexpected work

Type of Unit 

There’s a wide range of water heaters available on the market. Here’s a look at the most common types of water heaters you can choose from.

Tank vs. Tankless Water Heaters

Tank water heaters are the most common type of water heater, and the least expensive to install. Tankless water heaters offer options for homes with less space or efficiency needs, and while they cost more upfront, they tend to last longer. If you plan to stay in your home for years to come, it may make financial sense over time to go with a tankless water heater.

Here’s a quick breakdown of how both options compare:

FeatureTankless Water HeaterTank Water Heater
PerformanceProvides hot water on demand, continuouslyStores a set amount of hot water; can run out
EfficiencyMore energy-efficient (only heats water when needed)Less efficient (keeps water heated 24/7)
Lifespan20+ years (longer lifespan with proper maintenance)10-15 years
Space NeededCompact, wall-mounted, saves spaceRequires a large storage tank, taking up more space
Flow RateNeeds to be sized appropriately to match your home’s hot water useHigh flow rate but limited by tank size (runs out)

Gas vs Electric vs Solar Tank Water Heaters

Tank water heaters can be powered by either natural gas or electricity to operate. There are also solar water heaters, but they’re less common in the Portland area and tend to be more expensive.

What to expect from gas and electric water heaters:

FeatureGas Water HeatersElectric Water Heaters
EfficiencyLess efficient (70-90%)More efficient (90-100%)
Heating SpeedHeats water fasterSlower heating time
Installation LocationRequires ventilation, limiting locationCan be installed almost anywhere
Power OutageCan operate during power outages if gas supply is intactWill not work during power outages
Installation CostsHigher due to venting requirementsEasier to install, so lower overall cost

Read More: Gas vs. Electric Water Heaters: Which Should You Choose?

Condensing vs Non-Condensing Gas-Powered Water Heaters

If you’re leaning toward a tankless, gas-powered water heater, you’ll also have to choose between condensing and non-condensing water heaters.

FeaturesCondensing Tankless Water HeaterNon-Condensing Tankless Water Heater
EfficiencyHighly efficient (up to 98%) by using exhaust heatLess efficient (80-85%) as exhaust heat is vented out
VentingUses cooler exhaust, allowing PVC venting materialsRequires expensive stainless steel venting due to hot exhaust
CostHigher upfront cost, but lower long-term operating costsLower initial cost, but higher operating costs over time
MaintenanceMay require more maintenance due to condensation managementLess maintenance as no condensation to deal with
LifespanLonger lifespan due to more efficient energy useSlightly shorter lifespan due to heat stress on components
Installation ComplexityMore complex installation due to condensation drainage needsSimpler installation without need for condensate drainage
Space RequirementsRequires space for condensate drainage systemDoes not require additional space for drainage

Labor and Accessibility 

Labor costs go up when access is difficult. The location of where your replacement water heater is going will be a factor in labor costs. The harder a water heater is to reach, the more time the job takes. Easily accessible areas usually cost less for a replacement water heater install than those in tight spaces or located in out-of-the-way places like barns. The more steps in the water heater replacement, the higher the cost of installation. 

Permits

Most local governments, like here in Portland and Multnomah County, require a residential plumbing permit to replace your water heater. If your water installation needs an on-site inspection or changes in electrical lines, water lines, or gas lines, additional permits may be required. Ask your service professional if the estimate includes the cost of a Portland permit, which means they manage the process, and you don’t have to worry about it.

Disposal of Old Water Heater

Removal and disposal of your old water heater may not be included in your estimate, so make sure to ask. If it isn’t, then you’ll be responsible for junk pickup to have it hauled away. Jacobs Heating & Air Conditioning will take care of the removal and disposal of your old water heater, so you don’t have to worry about it.

Unexpected Work

It is always a good idea to budget for unforeseen additional costs not included in your estimate. New wiring, a needed gas line upgrade, and other issues could crop up during your water heater installation and it is a good idea to be prepared. A good installer will flag these things before starting work and explain what they mean for the total cost.

Read next: 10 Noticeable Signs Your Water Heater is Going Bad

Frequently Asked Questions

Why is there such a big difference between tank and tankless costs?

Tankless units are more complex to install and the equipment itself costs more. That said, they last longer (20-plus years versus 10 to 15) and use less energy, so many homeowners find they pay off over time.

What’s included in the replacement cost?

It depends on the company. At Jacobs, our estimates include equipment, labor, permit coordination, and old unit disposal. Before agreeing to any job, make sure your estimate is clear about what’s covered.

Are there extra installation costs I should plan for?

Sometimes. If your home needs updated wiring, a gas line upgrade, or new plumbing connections, that can add to the total. A good installer will flag anything like this before starting work.

Does replacing a water heater require a permit in Portland?

Yes. Portland requires permits for water heater replacement. Make sure whoever you hire handles permit coordination as part of the job.

How do I know if I should repair or replace my water heater?

If your unit is 8 to 12 years old and having problems, replacement is usually the smarter investment. If it’s newer and the issue is minor, a repair might make more sense. We’re happy to take a look and give you an honest recommendation.

Can I install a replacement water heater myself?

Water heater installation is not a do-it-yourself job. Leave it to the professionals at Jacobs Heating & Air Conditioning, who will do the job quickly, efficiently, and up to code. Gas water heaters need to be properly vented, and the gas line needs to be hooked up correctly. One mistake could lead to a dangerous situation.

Water Heater Repair and Replacement Services in Portland

Replacing a water heater is not something most homeowners do more than once or twice. It can feel like a big decision, and the costs involved make it easy to second-guess yourself.


Our team has been helping Portland homeowners through this process for over 70 years. We will walk you through your options, give you a straightforward estimate, and handle everything from permits to old unit disposal.

Scheduling a service or talk to our team to get started.

About the Author

Amanda Jacobs portrait

Amanda Jacobs, Internal Project Manager

Amanda Jacobs is an Internal Projects Manager and 3rd generation member of Jacobs Heating & Air Conditioning. She received her MBA from Seattle University and has worked for a leading HVAC training and consulting firm. When not talking HVAC on the Jacobs Blog, you can find her on the golf course or whipping up her famous vegan chili.