Old tank giving out or your tankless unit already dead? Same-day conversions from our Charleston Blvd base — gas line sizing, permits and haul-away all included. No forms, just call.
Old tank giving out or your tankless unit already dead? LV Water Heater Pros converts tanks to tankless and swaps failed tankless units across Las Vegas, with same-day scheduling from our Charleston Blvd base.
You've got a decision to make and probably a puddle to deal with first. Whether the 40-gallon tank in your garage finally rusted through or the tankless unit you installed a decade ago started throwing error codes, this page walks through what a real tankless replacement in Las Vegas looks like — no sales pitch, just the gas line math, the permit steps, and what a fair estimate actually looks like.
You want the job done once, done to code, and done by someone who answers the phone. We're a two-minute drive from the 95/Charleston interchange, and most of our tankless calls come from folks in Spring Valley, the Scotch 80s, and the Charleston corridor who found us because a neighbor didn't have a callback story to tell.
We carry Nevada State Contractors Board license #0009891 on every quote, we're bonded and insured, and we pull the permit ourselves instead of handing you a form and hoping you figure it out. We install Bradford White, Rheem, and Navien units — brands you won't find on a Lowe's or Home Depot shelf — because a tankless unit is only as good as the gas line and venting behind it.
We keep this simple on purpose. Four steps, no surprise line items halfway through.
We ask what's failing, what gas line you're on now, and whether you're converting a tank or replacing a dead tankless unit.
A tech confirms your BTU demand against code before anyone touches a wrench.
Old tank comes out, new unit goes in, haul-away included.
We show you the shutoffs, the flush valve, and the paperwork.
Whether you need same day tankless water heater replacement in Las Vegas or you're calling after an emergency tankless water heater replacement discovery on a weekend, our dispatcher asks the same three questions: unit age, gas line size, and whether this is a first-time conversion. That call — not a guess on-site — is what keeps our estimate from moving once we arrive. We run 24 hour tankless water heater replacement calls out of Las Vegas year-round, including 24/7 tankless water heater replacement dispatch for after-hours failures and urgent weekend calls, because a dead unit doesn't wait for business hours.
Most tank water heaters run on a 1/2-inch gas line built for roughly 40,000 BTU. A tankless unit can demand 150,000 to 199,000 BTU on a cold start, and the City of Las Vegas Building & Safety Department requires a gas demand calculation and combustion air check under the Uniform Plumbing Code, Chapter 5, before that unit gets signed off. We run that calculation before we quote, not after we've cut into your wall.
Most straightforward tank-to-tankless conversions run three to five hours once the crew is on-site, longer if the gas line needs upsizing or the vent run has to move. The old tank leaves in our truck — you don't stand in the driveway wondering how to get rid of a 40-gallon steel cylinder. We run same day tankless water heater conversion service across Las Vegas, and we treat 24 hour tankless water heater conversion calls, after-hours tankless water heater conversion calls, weekend tankless water heater conversion calls, and urgent tankless water heater conversion calls the same way: fast and straight with you about what's actually wrong.
We schedule the city inspection, we're on-site for it, and we walk you through the unit before we leave: where the isolation valves are, how to flush it yourself if you want to, and what the warranty actually covers.
Three jobs, three different starting points, one crew that's done all of them across the valley. If you searched tankless water heater las vegas nv looking for someone who handles the gas line side and not just the box on the wall, this is that list.
Moving off a tank for good. Usually means new gas piping, a new vent through the wall or roof, and a condensate drain if you're going with a condensing unit. We handle a las vegas tank to tankless conversion the same way whether it's a Spring Valley ranch home or a newer two-story build on the west side with different framing.
Your existing tankless unit died — from age, a cracked heat exchanger, or scale that finally won the fight. Since the gas line and venting are often already sized correctly, this is usually the fastest of the three jobs. Tankless water heater conversion in las vegas nv where the pipe and vent work is already done typically turns around same-day.
The tank-to-tankless conversion itself goes fine, but the line feeding your furnace and range wasn't built for the extra demand. We size the whole system — not just the water heater branch. That includes tankless water heater upgrade in las vegas work when an inspector or a home sale flags an undersized line.
Las Vegas has some of the hardest tap water in the country, regularly cited among the top two hardest municipal water supplies in the U.S., largely from Lake Mead mineral content. That matters more for tankless units than tank units, because the heat exchanger in a tankless system has a much smaller water passage for scale to clog.
A tank water heater can run for years with sediment sitting quietly at the bottom. A tankless unit routes water through a narrow copper or stainless heat exchanger, and mineral scale builds up fast enough here that manufacturers like Rheem and Navien specify an annual descaling flush to keep the warranty valid — not a suggestion, a requirement.
The single most common issue we find on a conversion call isn't the water heater itself — it's the 1/2-inch gas line sized decades ago for a 40,000-BTU tank that now needs to feed a unit pulling four to five times that on a cold morning.
If your master bath sits on the second floor with thirty feet of pipe run from the water heater, a recirculation line or pump keeps you from standing there for ninety seconds waiting for hot water every single morning. We check for this on any two-story quote in Las Vegas — it's a small add during install and a real pain to retrofit later.
We've heard the same three complaints from people who called us after getting quoted somewhere else first. One Las Vegas homeowner posted online that a large national outfit quoted $9,000 for a tankless swap that should have run a fraction of that — on top of an $8,000 quote from the same company for a standard tank job that typically runs closer to $1,000 in parts. Another local company got called out for "bait and switch" behavior, a low number on the phone that turned into a much bigger one once the crew was standing in the garage.
Whether your job needs a City of Las Vegas permit (most tankless conversions do, and skipping it can cause problems at resale) · What the actual manufacturer warranty covers versus what our labor warranty covers · Whether your existing gas line will need upsizing, because that's the line item that turns a fair estimate into a shock invoice when it shows up as a surprise mid-job instead of on the front end.
"Our tank started leaking on a Sunday night and I figured we'd be stuck until Monday. They had someone out that same evening and walked us through why tankless made sense for our family instead of just swapping in another tank. No pressure, just straight answers."
"I'd been putting off replacing our tankless unit because the first quote I got felt like it kept growing. LV Water Heater Pros gave me one number that covered the gas line upsizing too, and it didn't move once they got here."
"Respectful of our property, on time, and the tech actually explained what the permit was for instead of just mentioning it. That mattered to us since we're planning to sell in a couple years."
We're not a call center routing you to a subcontractor three cities away. Our trucks run out of 2801 W Charleston Blvd, and our techs know the difference between a Spring Valley slab foundation and a two-story build on the west side without asking. If you searched tankless water heater replacement las vegas, nv looking for someone local instead of a franchise, that's us.
Every tankless install we pull a permit for gets checked against Uniform Plumbing Code Chapter 5 for combustion air and gas demand, and our techs are trained on manufacturer-specific installation standards for Rheem, Navien, and Bradford White units so the warranty stays valid — not just the install.
The City of Las Vegas Building & Safety Department requires a permit for most tankless water heater installs, particularly any job involving new gas line sizing or a vent relocation. That process includes a plan submittal, a gas demand calculation showing your line can handle the unit's BTU draw, and a combustion air check per Uniform Plumbing Code Chapter 5. Most competitors skip mentioning this entirely until it becomes a problem at your next home sale. We pull it as part of the job, not as an upsell.
Wherever you're calling from in the valley, our trucks are close enough for same-day scheduling most days of the week. No forms to fill out, no waiting on a callback. Call (725) 485-6803 and talk to a real person who can get a truck moving today. Not ready to book yet? Ask us your sizing or permit questions first — we'd rather answer them than rush you.
If your tank is rumbling, leaking, or your tankless unit just threw its last error code, call the team at LV Water Heater Pros for las vegas tankless water heater replacement done right the first time.
Call (725) 485-68032801 W Charleston Blvd #23, Las Vegas, NV 89102 | Mon–Sun 7:00 AM–11:00 PM | Emergency 24/7