What should I consider before buying a new water heater?

Before buying a new water heater, you should consider space, fuel type, efficiency, warranty, tank size, and professional installation. Making the right choice upfront helps you avoid cold showers, high energy bills, and premature equipment failure.

TL;DR

• Measure your available space before choosing a water heater.
• Match the unit to your fuel source: electric, gas, or propane.
• Energy-efficient water heaters cost more upfront but save money over time.
• Tank size should match both current and future household demand.
• Professional installation helps prevent safety issues and code violations.

How much space do you have for a water heater?

Water heaters come in different sizes, and not every model will fit your available space. Before shopping, measure the area where the water heater will be installed. Bring those measurements with you so you don’t end up with a unit that won’t fit.

Does your water heater need to be electric, gas, or propane?

Water heaters are designed for specific energy sources and are not interchangeable. Make sure the unit you choose matches the fuel already available in your home. Switching fuel types usually requires additional infrastructure and professional evaluation.

How important is energy efficiency?

Hot water accounts for a significant portion of household energy use. Choosing a tankless water heater or a heat pump water heater can reduce monthly utility bills over the life of the unit. Models that meet ENERGY STAR requirements provide efficiency information that makes it easier to compare long-term operating costs.

Why does the warranty matter?

Many water heaters last only as long as their warranty period. A longer warranty can be valuable, but it’s important to read the fine print. Some warranties exclude common causes of failure, so coverage details matter as much as length.

How do you choose the right tank size?

Water heaters typically range from 20 to 80 gallons, with 40–50 gallons being most common. A tank that’s too small can leave you without hot water, while an oversized tank increases energy costs.

General sizing guidelines:

• 1–2 people: 40–50 gallon tank
• 3–4 people: 50 gallon tank
• 5+ people: 50–75 gallon gas or 80 gallon electric tank

Future needs matter too. Expanding households, large bathtubs, frequent laundry use, or plans to sell your home should all factor into sizing decisions.

Why professional installation matters

Installing a water heater involves plumbing, electrical or gas connections, and local code requirements. Installation mistakes are a common cause of water heater failure and safety hazards. Working with a licensed plumber helps ensure safe operation and long-term reliability.