Installed & sized right, or repaired if that's all it needs.
Other Water Heater Services
Thinking about going tankless, or is your current system giving you trouble? Either way, let’s talk.
Tankless Water Heater Installation & Repair Across Ventura County
A tankless unit heats water as it flows through rather than storing it, so hot water doesn’t run out, and there’s no tank losing heat in the garage all day. Getting the sizing right at installation is what makes the difference between a system that delivers on that promise and one that struggles the first time two showers run at once.
Dutton Plumbing, Cooling, Heating & Electrical installs and repairs tankless water heaters across Simi Valley, Ventura County, the San Fernando Valley, Santa Clarita, and Northern LA County.
If your tankless system is already installed and acting up, we’ll tell you honestly whether it needs a repair or whether it’s past that point, the same way we would for any water heater.
Signs Your Tankless Water Heater Needs Attention
- Hot water that takes longer to arrive than it used to
- Water temperature that fluctuates mid-shower instead of holding steady
- An error code displayed on the unit
- The unit cycling on and off repeatedly without a steady flow
- Reduced flow rate, even though nothing else in the house changed
- A noticeable drop in output when two fixtures run at once, when that never used to be a problem
- Popping, ticking, or rattling sounds during operation
Most of these point to something specific rather than the whole unit failing, and a lot of them trace back to mineral scale, which is common with Southern California’s hard water.
Is Your Tankless Water Heater Worth Repairing?
Tankless units run longer than tanks, often around twenty years, so the repair-versus-replace math looks different than it does for a standard water heater.
Scale buildup is usually a repair, not a replacement.
Hard water leaves mineral deposits inside the heat exchanger, which is the leading cause of tankless problems in this area. A descale flush often resolves it. Skipping flushes for years is what turns a maintenance visit into a bigger repair.
Error codes are diagnostic, not a verdict.
Modern tankless units report specific fault codes for ignition, venting, and flow sensor issues. Most of those are component-level repairs. We read the code, confirm what it's actually telling us, and quote the repair rather than assuming the worst.
Sometimes the unit isn't broken; it's undersized.
If yours has never kept up with two showers running together, that may not be a malfunction at all. It may be a flow rate mismatch from an installation that didn't account for how the house actually uses hot water. That's a sizing conversation, not a repair.
Past fifteen years, replacement starts to make more sense.
Not because the unit necessarily fails at that point, but because parts availability narrows and newer units run more efficiently. We'll tell you which side of that line yours is on.
What Goes Into a Tankless Water Heater Installation
We Size It to How You Actually Use Hot Water
A tankless unit is rated by flow rate, not by gallons, and undersizing is the single most common mistake in this category. We size to fixture count and real household demand, not to the cheapest unit that technically qualifies.
Gas Line and Venting Get Checked Before We Quote
Converting from a tank often means the existing gas line is too small for a tankless unit's demand, and venting requirements differ, too. We check both before giving you a number, so the quote doesn't change once the job is underway.
What You Get On Every Call
At Your Door in 60 Minutes or Less
Most emergency calls get a technician out within the hour, and there is no surcharge for the speed.
Priced by the Job, Not the Hour
You hear the number before the work starts, and it holds until we pack up. A slow job costs us, not you.
Technicians You Can Trust in Your Home
Background-screened, drug-tested, and trained every week. Boot covers go on at the door, and the house gets left the way it was found.
Professional Answers
Tankless Water Heater Questions From Simi Valley Homeowners
How much does a tankless water heater installation cost?
How often does a tankless water heater need to be flushed?
Can a tankless water heater keep up with two showers at once?
Do I need a bigger gas line for a tankless water heater?
Often, yes. Tankless units draw more gas on demand than a standard tank, and older gas lines sized for a tank sometimes can’t keep up. We check this before quoting, so it’s accounted for in the price rather than discovered partway through the install.
Is it worth converting from a tank to a tankless water heater?
The answer here is often yes, particularly for households running back-to-back showers or wanting the floor space back. Installation costs more up front, sometimes considerably if the gas line needs upsizing, so the value depends on how long you plan to stay in the house and how much you use hot water day to day.
What brands of tankless water heaters does Dutton install?
We install and service all major tankless brands, and our technicians work on units regardless of who put them in.
Let's Get Your Home's Ducks in a Row
Endless hot water only works out the way it’s supposed to when the sizing is right from the start. Tell us about your house and how you use hot water, and we’ll tell you what fits.
Call or book online, whichever’s easier.