50 gallon water heater If you have questions about 50 gallon water heaters, you will find lots of information on this page. However, if you have any question you cannot find the answer to, give us a call 24 hours a day to speak with a water heater expert. If you’re having a problem with a 50 gallon water heater we can help or you can check out our FAQ section for information about common water heater problems.

Sizing

It is very common to find a 50 gallon water heater in a 3 bedroom / 3 bathroom home. Partly because the uniform plumbing code regulates the minimum water heater capacity required in homes based on bedroom and bathroom size, but also because a 50 gallon capacity unit will appropriately serve a 3 bed/3 bath residence.  There are always certain circumstances that make an exception to the rule. Such as having many people reside in the home and all trying to take a shower in the morning or having appliances and/or medical equipment that requires preheated water, but most often a 50 gallon water heater will service the needs of a 2.5 to 3 bathroom home quite well.

If you start to notice that you are running out of hot water more frequently, but your habits have not changed,  it can be a sign the water heater is beginning to fail or get full of sediment. Depending on the age of the unit and the maintenance history you may be able to drain the tank. We do not recommend this if your water heater is over ten years old and has not regularly been drained, it may cause internal damage to the glass lining – drain the tank at your own risk. Often opening an old drain valve can sometimes cause more damage the to the tank than it can fix. If you have a large household, a growing household or plan to remodel and add more space to your home, think about upgrading to a larger water heater or consider a tankless water heater. There will be a need to upgrade the venting and possibly the plumbing, but it will give you additional hot water that can be used when you have multiple showers going or high water usage needs.      

Venting

A typical 50 gallon gas water heater has a 3 inch vent and is connected to a flue that runs to the exterior of the home. If your water heater is in the garage next to your heating unit the vent from the water heater and the vent from the 50 gallon water heater most likely connect together and then run up and out through the roof. All gas water heaters must have a vent that carries the gas by products or carbon monoxide to the exterior of the home.  

50-Gallon Gas Water Heater Comparison Table

Ultra Low Nox
BRAND MODEL.NUMBER GALLON.CAPACITY BTU.INPUT.PER.HOUR ENERGY.FACTOR FIRST.HOUR.RATING DEMENTIONS
Rheem PROG48-40U (TALL) 50 40,000 .62 91 57 7/8 X 20 1/8
Rheem PROG50S-40N RH59 (SHORT) 50 40,000 .59 84 49 3/4 X 22
Bradford White M-I-5036FBN (TALL) 50 40,000 .59 89 58 X 20
Bradford White M-1-TW-50S6FBN (SHORT) 50 40,000 .63 86 57 X 23
A.O. Smith GPVT-50 (TALL) 50 40,000 .65 96 65 X 20
A.O. Smith XCVL-50 (SHORT) 50 40,000 .58 93 53 1/4 X 24
State GP6 50 YPCT (TALL) 50 40,000 .7 80 60 X 22
State GS6 50 YBRS (SHORT) 50 40,000 .58 80 53 1/4 X 24
Low Nox
Bradford White U4-5036FRN (TALL) 50 40,000 .61 90 59 X 22
Bradford White M45036FBN (SHORT) 50 40,000 .61 74 48 1/2 X 20