Why Las Vegas homeowners are switching to tankless
A traditional tank water heater stores 40–80 gallons of water, keeps it hot around the clock, and runs out during back-to-back showers. A tankless unit heats water on demand as it flows through the unit — there’s no tank to drain, no standby heat loss, and no cold-shower wake-up calls when the family runs ahead of you.
For Las Vegas homes, the energy savings argument is real: the U.S. Department of Energy estimates tankless units are 24–34% more efficient than storage tanks for average-use households. In a climate where air conditioning already hammers the electric bill, cutting water-heating costs by a third adds up.
The brands we install and service most often in the valley — Navien, Rinnai, and Noritz — all make condensing gas models with efficiency ratings above 90% UEF. We stock common parts for all three and can usually turn around a repair without a special order.
The hard-water problem nobody warns you about
Las Vegas sits at the end of the Colorado River system, drawing from Lake Mead. The water is exceptionally hard — typically 600–800 ppm of dissolved calcium and magnesium, well above the 180 ppm threshold for “very hard” water. That’s about as hard as it gets in a major American city.
In a tank heater, scale settles to the bottom and insulates the burner. In a tankless unit, it coats the narrow passages of the heat exchanger — the heart of the machine. Scaled-up heat exchangers overheat, trigger error codes, lose efficiency, and eventually fail. Manufacturers often void warranties when evidence of scale damage is found.
What this means for you: flush your tankless unit every 6–12 months (we use a citric-acid descaling solution circulated through the heat exchanger), and seriously consider pairing the unit with a water softener. A softener upstream dramatically slows scale accumulation and can double the usable life of a $1,500–$2,500 appliance.
What a Drip Doctors tankless installation includes
Installing a tankless unit isn’t a swap-and-go job. Gas-fired models pull much higher BTU loads than tank heaters — a Navien NPE-240A2, for example, draws up to 199,000 BTU at full fire. That often means upsizing the gas line from the meter to the unit. We assess your existing gas pressure and line size before committing to a unit model, because undersized gas supply is the most common cause of performance complaints after amateur tankless installs.
We also check:
- Venting configuration — concentric PVC venting (direct vent) vs. power-vent vs. indoor installation
- Water inlet and outlet line sizing — 3/4” is minimum for most units
- Recirculation pump compatibility if you want instant hot water at distant fixtures
- Permit requirements — Clark County requires a permit for water heater replacements; we handle the paperwork
If your home still has the original galvanized or early-generation copper supply lines, we’ll flag any corrosion issues we notice. A tankless unit installed on deteriorating pipes is a short-term fix. In that case we’ll walk you through whole-home repiping so the entire system is solid before the new unit goes in.