Yes, standard residential 80-gallon water heaters are effectively phased out. Due to strict federal energy-efficiency standards (NAECA), traditional large-capacity electric and gas storage tanks are no longer manufactured for standard residential use.
Traditional 80-gallon water heaters have been phased out due to strict federal energy efficiency regulations enacted by the Department of Energy (DOE). Standard electric models larger than 50-55 gallons are largely unavailable because they can no longer meet the required Energy Factor (EF) ratings.
RheemProTerra 80 Gal. 120-Volt Plug-in Smart Heat Pump Water Heater with Leak Detection and Auto Shutoff and 10-Year Warranty.
For example, the average 40-gallon water heater installation cost runs between $1,000 and $2,500, while its 80-gallon counterpart runs between $2,650 and $3,910.
Larger households with 5 or more people can need up to an 80-gallon tank, unless their overall usage is low.
Water Heater Size
30-gallon tank: ~5–7 minutes of hot water. 40-gallon tank: ~8–10 minutes. 50-gallon tank: ~10–12 minutes. 80-gallon tank: ~15–20 minutes.
We recommend going with Rheem, specifically for the Professional Series with 8 Year Warranty.
An 80-gallon water heater typically lasts 8 to 12 years, though well-maintained electric models can sometimes reach 15 years. Because of the heavier continuous strain on 80-gallon storage tanks, their lifespans are often on par with standard tanks rather than lasting as long as smaller or tankless options.
The Home Depot offers traditional water heater tanks and modern tankless units, both powered by either gas or electricity. Depending on your selection, the average cost for standard tank installation is generally between $1,600 to $2,400. Tankless installation can range from $2,400 to $5,400.
Some of the most reliable tank water heater brands in 2026 include Rheem, A.O. Smith, and Bradford White. These manufacturers have long histories of producing durable, efficient heaters with strong warranty coverage. Rheem is known for overall dependability and wide availability, A.O.
A 10-minute shower typically uses 12 to 25 gallons (45 to 95 liters) of hot water. The exact amount depends on your showerhead's flow rate and the temperature you prefer (as hot water is mixed with cold):
Keep the top of the tank free of dust, debris and flammable products such as paint, gasoline, solvents or adhesives. Also, never use these products near a water heater or any other natural gas or electric appliance because vapors from flammable liquids can ignite.
Yes, 80-gallon water heaters are still manufactured, but their availability depends on the type of unit you need.
The longest-lasting water heater brands are Bradford White and Rheem (specifically the Marathon series). Bradford White is favored by plumbers for professional installations and longevity, while the Rheem Marathon uses a unique fiberglass tank backed by a true lifetime warranty.
This problem usually comes down to capacity, heat production, or mixing issues inside your plumbing system. Sometimes the fix is simple, like adjusting your water heater temperature or flushing out sediment. Other times you may need a new mixing valve, an element replacement, or a different size water heater.
Tank to Tank Installation: On average, replacing a gas or electric water tank with a similar model takes two to three hours. It takes between 45 to 60 minutes to drain, disconnect and remove your old water heater.
Stores like Home Depot and Lowe's often include removal when delivering a replacement unit. This is the most convenient option, especially if the old unit is still in place and connected.
Professional installation costs to replace a water heater
The more hours of electrical, carpentry and plumbing work that are required for your installation (for example, installing new electric, water or gas lines or drywall), the higher your total water heater replacement cost.
In summary, an 80-gallon water heater is likely a good fit if you have a large household (5+ people), multiple bathrooms, frequent simultaneous hot water use, or high-demand fixtures. However, if your household is smaller and your peak demand is lower, a smaller tank is the more energy-efficient and cost-effective.
Excessive Water Pressure: High pressure stresses your system and shortens its lifespan. A pressure-reducing valve can help. Undersized System: A unit that's too small for your household's demand works harder and wears out faster. Proper sizing during installation is critical.
There isn't a single "number 1" model, as the ideal water heater depends on your home's setup, but top-rated brands dominating the market include Rheem (best overall tank/tankless) and A.O. Smith (best for durability and commercial-grade units).
Bradford White water heaters are widely regarded as some of the most durable on the market. They come with an array of well-thought-out features that enable them to stand up to all kinds of wear and tear that results from regular use. Overall, they have a longer service life than Rheem water heaters.
The Home Depot strongly recommends that you use an experienced, licensed plumber to install your new water heater, because they will know the required codes to complete a safe and compliant installation.