Gas VS Electric Tankless Water Heaters
Tankless water heaters are gaining popularity every year. Endless hot water, smaller footprint, better efficiency—what’s not to like? But when it comes down to choosing the right one for your home, most people hit the same fork in the road: should you go gas or electric?
It sounds simple enough, but the answer isn’t always clear-cut. Each has its strengths and drawbacks. Let’s break it down so you can see which one makes sense for your situation.
The Case for Gas
Gas tankless heaters are known for power. They can deliver a high volume of hot water at once, which is a big plus for larger households. Got two showers running while the dishwasher kicks on? A gas unit usually handles that without a hiccup. Another advantage: recovery speed. Gas models heat water faster, so you’re less likely to run into weak flow during peak times.
But here’s the catch. Gas tankless systems typically require proper venting, which means higher installation costs. In older homes without modern venting, upgrades can add to the bill. And if you don’t already have a gas line large enough to support the unit, that’s another cost. So yes, they’re powerful—but you pay upfront for that strength.
The Case for Electric
Electric tankless heaters, on the other hand, are simpler. No venting required. They’re usually easier and cheaper to install. For smaller households or homes that don’t use massive amounts of hot water at once, they work great.
They’re also quieter and require less maintenance. No gas line to worry about, no combustion chamber. Just a steady supply of electricity and water.
But, as with gas, there are trade-offs. Electric units struggle to keep up if multiple fixtures are running at once. Imagine trying to shower, run the washing machine, and wash dishes all at the same time—you may notice a dip in performance. They also pull a lot of amps, which sometimes means upgrading your home’s electrical panel before installation.
Cost Over Time
So which saves more money? It depends. Gas units cost more upfront but can save in operating costs, especially where natural gas prices are lower than electricity. Electric units cost less to install, but depending on energy rates in your area, they may cost more to run month to month.
A family in Richmond told me they swapped from electric to gas after two years because their electric bill kept creeping up in winter. Another family in Pearland made the opposite switch—gas prices jumped, and they liked the simplicity of an electric model. Both were happy after the switch, but the lesson is clear, your local utility rates matter.
Efficiency Differences
Here’s where gas or electric shows another split. Electric tankless heaters often have higher energy efficiency ratings, sometimes above 98%. Gas models tend to run lower, around 80–85%, though some high-efficiency condensing units push higher.
That said, “efficiency” doesn’t always equal “savings.” If natural gas is cheap in your area, even a less efficient gas unit can cost less to operate than a super-efficient electric one.
Longevity and Maintenance
Both types of systems can last 15–20 years with proper care. Gas models, however, need regular inspections for venting and burner function. Electric systems are simpler but can scale up quickly in areas with hard water. Annual flushing helps both types last longer. So, when you’re asking if gas or electric is better, you also need to think about how much maintenance you’re willing to commit to.
Why Call Dependaworthy
Choosing between gas or electric tankless systems can feel like a coin toss if you’re not familiar with the ins and outs. That’s where we come in. Our Dependaworthy plumbers take the guesswork out of the process. Dependable + Trustworthy = DEPENDAWORTHY! We look at your home, your utilities, your family’s habits, and we tell you what makes sense—not what makes us the most money.
And here’s our promise: Fixed right or you don’t pay. With Dependaworthy repair trucks ready to roll, we get the work done fast and done correctly, so you’re not stuck waiting for hot water.
FAQ
Which lasts longer, gas or electric tankless units?
Both average 15–20 years, though electric models often require less maintenance.
Is gas always better for large families?
Usually, yes, because of higher flow capacity. But it depends on your home’s plumbing and usage.
Does electric really cost more to run?
Not always. In areas with cheap electricity, it can be the more affordable choice.
Can I switch from electric to gas (or vice versa)?
Yes, but upgrades to gas lines or electrical panels may add to the cost.
Making the Choice
So, which is better: gas or electric? The truth is, there’s no universal answer. Gas works best for big households with multiple hot water demands. Electric shines in smaller homes, apartments, or where installation simplicity matters.
At the end of the day, it’s about matching the right system to the right family. And if you’re still stuck weighing the options, remember—you don’t have to decide alone. Call our Dependaworthy team, and we’ll help you choose wisely. Because hot water shouldn’t be a guessing game, and with us, it never is.
