The Fuel Type Decision Is More Practical Than You Think
Gas vs. electric is one of the first decisions you face when buying a new water heater. The right answer depends less on which fuel is "better" in the abstract and more on what is already set up in your Leawood home, what your utility costs look like, and how you use hot water. Here is a practical breakdown.
Gas Water Heaters
How They Work
A gas water heater uses a natural gas burner to heat water. In a tank model, the burner sits beneath the tank and heats the water from below. A flue runs through the center of the tank, and combustion gases exit through a vent to the outside. In a gas tankless model, a burner fires inside a sealed combustion chamber, and water is heated as it passes through the heat exchanger.
Advantages of Gas
- Faster recovery rate: Gas water heaters heat water faster than electric models. A gas tank unit can recover roughly 40 gallons per hour compared to about 20 gallons per hour for electric. This means less waiting between back-to-back showers.
- Lower operating cost (typically): In the Leawood area, natural gas from Kansas Gas Service is generally less expensive per BTU than electricity from Evergy. This gives gas water heaters a lower monthly operating cost in most cases.
- Works during power outages (some models): Gas tank water heaters with standing pilot lights continue to function without electricity. This is a real benefit during Kansas City winter storms when power outages can last hours or days.
- Higher output for tankless: Gas tankless water heaters produce significantly higher flow rates than electric tankless units. A whole-home gas tankless unit can typically deliver 8 to 10 GPM, while electric models are often limited to 3 to 5 GPM in colder climates.
Disadvantages of Gas
- Venting requirements: Gas water heaters require proper venting to expel combustion gases. This means a flue pipe routed to an exterior wall or through the roof. Upgrading from a natural draft vent to a power vent or direct vent can add cost and complexity.
- Gas line requirements: The unit needs a dedicated gas line of the correct diameter. Upgrading to a higher-BTU tankless model may require a larger gas line, which adds to installation cost.
- Carbon monoxide risk: Any gas appliance introduces a CO risk. Proper venting, CO detectors, and regular maintenance mitigate this, but it is a factor that does not exist with electric units.
- Slightly higher equipment cost: Gas water heaters tend to cost a bit more than equivalent electric models for the unit itself.
Electric Water Heaters
How They Work
An electric water heater uses one or two metal heating elements submerged in the tank to heat water. In an electric tankless model, high-wattage elements heat water as it flows through the unit. There is no combustion, no flame, and no venting requirement.
Advantages of Electric
- Simpler installation: No gas line, no venting. Electric water heaters just need a dedicated electrical circuit, which most Leawood homes already have for the water heater. This simplifies installation and reduces labor cost.
- No combustion risks: No gas means no risk of CO, no need for combustion air supply, and no vent pipe to maintain or inspect.
- Placement flexibility: Without venting requirements, electric water heaters can be placed in locations where a gas unit would not be practical, such as interior closets without exterior wall access.
- Higher efficiency ratings: Electric water heaters convert nearly all of their energy input into heat. Electric tank units typically have UEF ratings above 0.90, while gas tank units are often in the 0.60 to 0.70 range. However, this efficiency advantage is offset by the higher cost of electricity per unit of energy in most areas.
- Heat pump models: Electric heat pump water heaters (hybrid units) extract heat from ambient air and use it to heat water. These can cut electricity usage by 50 to 65 percent compared to a standard electric resistance water heater. They are a strong option for Leawood homeowners looking to reduce energy costs without switching to gas.
Disadvantages of Electric
- Slower recovery: Electric elements heat water more slowly than a gas burner. If your household has high peak demand, you may need a larger tank or a higher-capacity unit to compensate.
- Higher operating cost (typically): Electricity costs more per BTU than natural gas in the Leawood area. A standard electric resistance water heater will cost more per month to operate than a comparable gas unit, though heat pump models can close or eliminate this gap.
- No hot water during power outages: Every electric water heater, tank or tankless, requires power to operate. During an outage, hot water stops. A tank will hold its stored hot water for a while, but it will not heat new water until power is restored.
- Electric tankless limitations: Whole-home electric tankless units require very high amperage circuits (often 100 to 150 amps), which may exceed the capacity of the existing electrical panel in older Leawood homes. Upgrading the panel adds significant cost.
What About Switching Fuel Types?
Switching from gas to electric or vice versa is possible but adds cost and complexity to the project. Going from electric to gas requires running a new gas line to the water heater location and adding venting. Going from gas to electric requires a dedicated high-amperage circuit from the electrical panel, which may also need an upgrade. In both cases, the conversion work can represent a significant portion of the total project cost.
Most Leawood homeowners stick with whatever fuel type is already installed unless they are doing a major renovation or have a specific reason to switch.
Hard Water and Fuel Type
Regardless of whether you go gas or electric, Leawood's hard water affects both types equally. Sediment builds up in tank water heaters whether the burner is gas or the element is electric. The maintenance schedule (annual flushing, anode rod checks) is the same for both fuel types. The fuel decision and the hard water management decision are separate issues, so do not let one influence the other.
Which Fuel Type Is Right for You?
Gas usually makes sense if: your home already has a gas line to the water heater location, you want the fastest recovery rate, you want hot water during power outages, or you are considering a whole-home tankless unit.
Electric usually makes sense if: your home does not have a gas line to the water heater location, you want the simplest and least expensive installation, you are interested in a heat pump water heater, or your home does not have adequate venting for a gas unit.
If you are also deciding between tank and tankless, the tankless vs. tank comparison covers that decision alongside this one.
Water Heaters of Leawood works with both gas and electric systems. To figure out which option fits your home and budget, call (913) 392-5695 or request a quote online. We will get back to you fast with a recommendation based on your specific setup. For more on what drives the overall cost of a new water heater, see the cost factors guide.