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The short version: for a straight replacement, buy the Rheem PROE50 M2 RH95 Professional Classic — a properly specified glass-lined tank with a brass drain valve, a real anode rod and parts stocked in every American supply house. If you care more about the bill than the purchase price, the Rheem hybrid heat pump uses roughly a quarter of the electricity — heat pump models are the ones carrying the ENERGY STAR label in this category — and usually pays back the difference within five years once the federal credit and utility rebates are counted. If your water has already destroyed two glass-lined tanks, buy stainless.
This roundup lives in the DIY plumbing hub. Before you buy, check whether you need a permit, and once it is in, the CPSC recommends 120°F to avoid scalds, while the CDC's Legionella control guidance asks for hotter storage with a mixing valve at the taps — see what temperature to set it to and how often to flush it.
Three Things to Check Before You Order
A water heater is one of the few appliances where buying the wrong one is genuinely expensive to unwind, because it is heavy, hard-plumbed and hard-wired. Three checks take ten minutes and avoid nearly every problem.
| Check | What to measure | Why it matters |
|---|---|---|
| Height and clearance | Ceiling height, plus room to pull the anode rod | Tall 50-gallon tanks run around 58 to 62 inches; medium and short models exist for closets |
| Circuit capacity | Breaker size and wire gauge at the panel | 30 amps on 10 AWG carries 4500-watt elements; 5500-watt elements need more |
| Water chemistry | Hardness and any history of tank failures | Aggressive water shortens glass-lined tank life; stainless avoids the problem |
A note on capacity labeling: several stainless-tank units, including the Westinghouse models here, are sold as 52 gallons rather than 50. They are direct substitutes for a 50-gallon heater in every practical sense — just confirm the physical dimensions fit the space, because a slightly larger tank is sometimes a slightly wider one.
Top Picks at a Glance
Our #1 Pick: Rheem PROE50 M2 RH95 Professional Classic
The Professional Classic is the water heater that wins on the things you only notice after it is installed. It has a brass drain valve rather than the plastic one that snaps off the first time you try to flush the tank, a premium-grade anode rod that buys real years of tank life, and resistored elements that tolerate the sediment every American water supply eventually deposits. None of that photographs well. All of it is why plumbers keep buying it.
Electrically it is conventional and that is a virtue: two 4500-watt elements on a 240-volt supply drawing 18.75 amps, which suits the 30-amp circuit already in most homes. It carries a 6-year limited warranty on tank and parts, extendable to ten. The M2 designation is the medium-height configuration, which fits utility closets and low basements where a tall tank will not clear the ceiling — check your headroom, because Rheem also sells this in a tall version if you have the space.
The honest limitations: it is a resistance heater, so it costs three to four times as much to run as a heat pump unit, and electric recovery is slow — roughly 20 gallons per hour, against 40 or more for gas. A household running two showers back to back and then a dishwasher will find the limit. And a glass-lined tank is a consumable: the anode rod needs checking every few years or the tank starts corroding from the inside, which is the single most neglected piece of maintenance in American homes.
The Ranked Field
Best for a straight replacement in a normal American basement or utility closet
- Two 4500-watt elements on 240 volts, 18.75 amps
- Premium anode rod and enhanced-flow brass drain valve
- Medium height suits low ceilings and closets
- 6-year limited tank and parts warranty
Why buy it: the Professional Classic is the tank plumbers install when nobody is watching — glass-lined, brass drain valve, a real anode rod, and parts that every supply house in the country stocks for the next decade.
Best for a tall install where you want a different brand’s service network
- Tall 50-gallon configuration with two elements
- CoreGard anode rod for tank protection
- Meets current NAECA efficiency standards
- Dry-fire protection on the elements
Why buy it: A.O. Smith and Rheem are the two tanks American plumbers actually stock, and if your local shop is an A.O. Smith house this is the one where a warranty claim or a replacement element takes an afternoon instead of a week.
Best for cutting the water heating bill by roughly two thirds
- Heat pump technology — roughly four times the efficiency of resistance elements
- Built-in Wi-Fi with mode control and leak alerts
- ENERGY STAR certified, eligible for federal tax credit and utility rebates
- 10-year limited warranty
Why buy it: a hybrid moves heat rather than making it, which cuts running cost dramatically — with the federal efficiency credit and a utility rebate the payback on the higher purchase price is often three to five years.
Best for aggressive water that eats glass-lined tanks
- 316L stainless steel tank — no glass lining to crack, no sacrificial anode to replace
- 5500-watt elements for faster recovery
- 52-gallon capacity, a close substitute for a 50
- 6-year warranty, lifetime available on some variants
Why buy it: glass-lined tanks fail when the lining cracks and the anode is used up; a 316L stainless tank has neither weakness, which is why this design appeals to anyone who has already replaced two heaters on the same water supply.
Best for stainless tank durability on standard existing wiring
- Same 316L stainless tank as the 5500W model
- 4500-watt elements suit the common 30-amp, 10 AWG circuit
- 52-gallon capacity
- No anode rod maintenance
Why buy it: most existing American water heater circuits are 30 amps on 10-gauge wire, which will not carry 5500-watt elements — this is the same stainless tank sized to the wiring you already have.
Quick Comparison
| Product | Best for | Rating | Price | Buy |
|---|---|---|---|---|
| Rheem PROE50 M2 RH95 50-Gallon Professional Classic Medium Residential Electric Water Heater | Best Overall | 4.07 ratings | ~$700 | Price |
| A.O. Smith ENT-50 ProMax High Efficiency Tall Electric Water Heater, 50 Gallon | Best Alternative | 2.73 ratings | ~$750 | Price |
| Rheem 50 Gal. Smart High Efficiency Hybrid Heat Pump Water Heater with 10-Year Warranty | Best Efficiency | 5.06 ratings | ~$1,700 | Price |
| Westinghouse WER052C2X055N06 Electric Water Heater with 316L Stainless Steel Tank, 52 Gallon, 5500W | Best Tank Longevity | 3.212 ratings | ~$1,100 | Price |
| Westinghouse WER052C2X045N06 Electric Water Heater with 316L Stainless Steel Tank, 52 Gallon, 4500W | Best for a 30-Amp Circuit | 3.011 ratings | ~$1,000 | Price |
Specifications Side by Side
| Heater | Type | Capacity | Elements | Tank | Warranty |
|---|---|---|---|---|---|
| Rheem PROE50 M2 RH95 | Resistance | 50 gal | 2 × 4500W | Glass-lined steel | 6 years |
| A.O. Smith ENT-50 | Resistance | 50 gal | 2 × 4500W | Glass-lined steel | 6 years |
| Rheem hybrid heat pump | Heat pump | 50 gal | Heat pump plus backup | Glass-lined steel | 10 years |
| Westinghouse 5500W | Resistance | 52 gal | 2 × 5500W | 316L stainless | 6 years |
| Westinghouse 4500W | Resistance | 52 gal | 2 × 4500W | 316L stainless | 6 years |
How We Rank
We never buy or install these heaters. For water heaters the ranking priorities are: tank construction and expected life, since the tank is the part that fails and ends the appliance; parts and service availability in the United States, because a heater whose element you cannot buy locally is a heater you replace instead of repair; running cost across a realistic ten-year ownership; and installation reality — height, circuit requirements and what the code in most jurisdictions will demand. Aggregated owner ratings are weighted toward reviews written after several years, since first-week reviews of a water heater tell you almost nothing. Prices were checked at the time of writing. Full method: how we rank.
The Heaters, Reviewed
1. Rheem PROE50 M2 RH95 — Best Overall
Covered above. Owners praise: the brass drain valve, straightforward installation, and parts availability everywhere. Owners gripe about: shipping damage on a heavy freight item, and slow recovery inherent to electric resistance heating. Check price.
2. A.O. Smith ENT-50 ProMax — Best Alternative
The other tank American plumbers actually stock. Functionally very close to the Rheem: a tall 50-gallon glass-lined unit with two elements, a CoreGard anode rod and dry-fire protection that prevents an element burning out if it is energized before the tank is full — a genuinely useful safeguard given how often that mistake is made.
Owners praise: dry-fire protection, solid build, and good local service where A.O. Smith is the dominant brand. Owners gripe about: a tall configuration that will not fit low ceilings, and freight handling that occasionally arrives dented. Check price.
3. Rheem Hybrid Heat Pump — Best Efficiency
The one that changes the arithmetic. Instead of turning electricity into heat, a heat pump moves heat from the surrounding air into the water, which is roughly four times as efficient. Over a ten-year life the running-cost saving on a family of four typically exceeds the extra purchase price several times over, and the ENERGY STAR certification makes it eligible for the federal efficiency tax credit plus most utility rebate programs. Built-in Wi-Fi adds mode switching and leak alerts, which is more useful than it sounds on an appliance that fails by flooding a basement.
Owners praise: a dramatic drop in the electricity bill, the 10-year warranty, and useful app control. Owners gripe about: the compressor being audible — it needs a garage, basement or utility room, not a closet next to a bedroom; the requirement for around 700 to 1,000 cubic feet of surrounding air to draw heat from; and a condensate drain that has to go somewhere. Check price.
4. Westinghouse 52 Gallon Stainless, 5500W — Best Tank Longevity
A different answer to the question of why water heaters die. A glass-lined steel tank relies on a fired-on lining and a sacrificial anode rod; when the lining crazes and the anode is consumed, the steel starts rusting and the tank eventually perforates. A 316L stainless tank has neither vulnerability and needs no anode maintenance at all. The 5500-watt elements also recover meaningfully faster than the standard 4500-watt pair.
Owners praise: the stainless tank, no anode rod to service, and quicker recovery. Owners gripe about: the price, and — critically — that 5500-watt elements need more circuit capacity than the 30-amp, 10 AWG wiring found in most existing American installations. Check the panel before ordering this version. Check price.
5. Westinghouse 52 Gallon Stainless, 4500W — Best for a 30-Amp Circuit
The same 316L stainless tank sized to the wiring most homes already have. If the stainless argument appeals but you do not want to pay an electrician to pull a heavier circuit, this is the version to buy.
Owners praise: stainless durability on standard wiring, and no anode maintenance. Owners gripe about: recovery no faster than a conventional tank, and a premium price for a benefit that only pays off over a long ownership. Check price.
What Owners Actually Complain About
Freight damage. The most common one-star review on every water heater sold online is a dented tank or a sheared fitting from shipping. Inspect the carton before the driver leaves and photograph any damage — refusing delivery is far easier than arranging a return afterward.
Elements burned out on first fill. Energizing the heater before the tank is completely full destroys an element within seconds. Fill the tank, open a hot tap until it runs steadily with no air, and only then close the breaker. Models with dry-fire protection guard against this; most do not.
Plastic drain valves snapping. Owners who go to flush sediment after a few years find the plastic valve is seized and breaks off in their hand, turning maintenance into an emergency. A brass drain valve is a small spec that matters a great deal, and it is worth replacing a plastic one at installation.
Sediment noise and lost capacity. A tank that rumbles or knocks is boiling water trapped under a layer of sediment on the bottom, which insulates the lower element and steals usable volume. Flushing annually prevents it; flushing after five years of neglect often just clogs the valve.
Running out of hot water sooner than expected. Electric heaters recover at roughly half the rate of gas. Households that switched from gas to electric at the same tank size frequently report this, and it is physics rather than a fault. If two showers back to back is your normal pattern, size up or choose a hybrid, which has a high-demand mode.
The permit surprise. Owners install a replacement themselves, then discover at resale or at an insurance claim that the work needed a permit and an inspection. Codes also commonly require an expansion tank, a drain pan and, in seismic zones, strapping — none of which the old installation may have had.
How to Choose a 50 Gallon Electric Water Heater
Start at the electrical panel, not the product page. Note the breaker size and the wire gauge feeding the existing heater; that decides whether 5500-watt elements are even an option. Then measure the space, including the headroom you need to withdraw an anode rod, which is roughly the height of the tank again unless you buy a flexible rod.
Next, be honest about how long you will own the house. A hybrid heat pump makes overwhelming financial sense over ten years and much less sense if you are selling in two. A stainless tank is the right call if you are on aggressive water and have already replaced two heaters; it is over-buying otherwise. And whatever you choose, plan for the code items the old installation probably lacks — expansion tank, drain pan with a piped discharge, and seismic strapping in the West.
Safety and code: water heater replacement involves a 240-volt dedicated circuit and a pressurized vessel with a temperature and pressure relief valve. If the existing wiring is aluminum, undersized or damaged, or if you are not completely confident working in the panel, hire a licensed electrician. Permit and inspection requirements are jurisdiction-specific and are not optional in most of the country — check with your local building department before you begin.
The Verdict
The Rheem PROE50 M2 RH95 Professional Classic is the 50 gallon electric water heater we would fit in most homes: correctly specified, easy to service, and backed by the deepest parts network in the United States. Choose the A.O. Smith ENT-50 if your local supply house is an A.O. Smith shop, the Rheem hybrid heat pump if you plan to stay put and want the bill cut by two thirds, and the Westinghouse stainless models if your water has already killed a glass-lined tank — the 4500W version if your circuit is the usual 30 amps. Check price on Amazon →
More from this hub: DIY plumbing · how long does a water heater last · why does my hot water run out so fast · how often to flush a water heater · how we rank.