Buying your own water heater is usually the most cost-effective long-term option compared to renting or leasing. Ownership gives you full control over the model, avoids monthly fees, and eliminates recurring rate hikes. However, many plumbers refuse to install customer-provided units, making it essential to consult a professional first.
Bradford White strongly recommends all water and space heating products be installed safely and properly by a qualified plumbing professional. A plumbing professional is trained, experienced, and knows local municipal codes that govern water heater installations.
To prevent Legionella bacteria (which causes Legionnaires' disease) from multiplying, your water heater should be set to 140°F (60°C). However, because water at this temperature poses a severe scalding risk, it must be mixed with cold water using a Thermostatic Mixing Valve (TMV) to deliver safe, warm water to your taps.
Traditional tank water heaters last 8 to 12 years, while tankless models typically last 15 to 20 years. Lifespans vary greatly depending on water quality, unit design, and whether you perform regular maintenance like flushing the tank and checking the anode rod.
A 40-gallon water heater is generally too small for a family of 5. Industry standards typically recommend a 60- to 80-gallon tank for this size household, though a 50-gallon tank can work if you adopt strict water-saving habits.
If a standard showerhead is fitted, it will use around an extra half a gallon each minute, accounting for a 25-gallon emittance every 10 minutes, or 50 gallons throughout a 20-minute shower. *1 gallon = 4.54 litres.
A 40-gallon tank water heater installation costs $700 to $2,300, with an average cost of $1,650. Prices vary based on energy source and installation complexity. The national average cost to install a 40-gallon tank water heater ranges from $700 to $2,300.
When searching for the most reliable water heater, professional plumbers consistently recommend A.O. Smith, Bradford White, and Rheem. For long-term tank durability and a "set-it-and-forget-it" experience, A.O. Smith and Bradford White are top choices. If you prioritize high-tech smart features and energy efficiency, Rheem is a market leader.
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.
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.
A sulfurous or rotten egg-like odor in the hot water is caused by bacteria growing in the water heater. This growth usually happens when the water heater is turned off while on vacation, when the hot water has not been used for a long time, or when the temperature setting on the heater is set too low.
The first signs of Legionnaires’ disease typically appear 2 to 14 days after exposure to Legionella bacteria. Early symptoms are often flu-like and include:
The ideal shower temperature for maintaining healthy, hydrated skin is between 98°F and 105°F (37°C to 40°C). This lukewarm-to-warm range cleanses and relaxes without stripping away your skin's natural moisture barrier.
If the project is as simple as replacing an old water heater with a new one, a handyman can likely do it with no trouble. However, converting a gas water heater to an electric one or putting in specific wiring and framing for the water heater will likely require the skill set of a licensed professional.
Another alternative is a tankless or on-demand water heater. On-demand water heaters instantaneously heat water and therefore have the benefit of never running out. These systems save energy by eliminating the need to maintain a tank of hot water all the time and only use energy when you turn on the tap.
When shopping for a new water heater, you need to consider the type of system, your home's fuel source, the capacity/flow rate needed for your household, and the overall energy efficiency to keep utility bills low.
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.
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.
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).
Both Rheem and Bradford White are top-tier water heater brands, but they cater to different buyers.
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.
Yes, Costco sells water heaters, including traditional tank and tankless models (mostly from the brand Rheem). Rather than picking one up off the shelf, you purchase the unit and schedule a home consultation through their affiliated local contractors.
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.
Replace your water heater if it is leaking from the tank, shows visible rust, or is over 8–12 years old. You should also consider replacement if you notice rumbling/banging noises, a drop in hot water capacity, or require frequent, costly repairs on an aging unit.