Open: 24 hours
3580 Polaris Ave #17, Las Vegas, NV 89103
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Tankless Water Heater Installation in Las Vegas, NV
Tired of running out of hot water, or replacing bulky tanks every few years? A gas tankless water heater can give you continuous hot water, improved efficiency, and more usable space—but only if it’s sized, vented, and piped correctly. Active Plumbing installs gas tankless water heaters in Las Vegas, Henderson, North Las Vegas, Summerlin, and nearby communities—whether you’re replacing a failed tank or upgrading on purpose.
✓ Licensed local pros: Clean, code-conscious tankless installs in the Las Vegas valley.
✓ Gas & venting handled: Sizing, gas line capacity, venting, and condensate all addressed.
✓ Hard-water smart: Installations tailored to Las Vegas water conditions with maintenance in mind.
✓ Upgrade or emergency replacement: We handle planned upgrades and “no hot water” emergencies.
✓ Licensed local pros
✓ Gas & venting handled
✓ Hard-water smart
✓ Upgrade or emergency replacement
What our Clients think about us
Your satisfaction is our priority.
What Is a Gas Tankless Water Heater Install?
A gas tankless water heater installation replaces or adds a water heater that heats water only when you open a tap, instead of storing it in a big tank. A proper install covers:
Correctly sized unit for your home’s hot water demand
Adequate gas line and regulator capacity
Proper venting and combustion air (direct vent, category-appropriate)
Water connections, isolation valves, and flush ports
Condensate drain (for condensing units) routed correctly
Startup, testing, and temperature setting that makes sense for your household
Done right, you get continuous hot water, improved efficiency, and a cleaner mechanical area.
Why Choose Active Plumbing
Sizing done right: We don’t guess—your tankless is sized for your home, fixture count, and incoming water temperature.
Gas & venting aware: We check gas line capacity, vent paths, clearance, and combustion air before recommending a setup.
Hard-water conscious: Installations are planned with Las Vegas hard water and future descaling in mind.
Replacement AND new installs: We can swap out an old tank or set up a new tankless location when remodeling.
Clean, professional work: Neat piping, clear shutoffs, labeled valves, and tidy venting.
Licensed & insured: Nevada License #0047021, trusted locally for water heater work.
Immediate Actions (What to Do Now)
If your current water heater is leaking, turn off the cold supply valve above the heater and, if safe, shut off gas or power to the unit.
Take a photo of your existing water heater, gas line, venting, and surrounding area, plus the sticker/label if visible.
Note how many bathrooms, fixtures, and major hot-water appliances you have (showers, large tubs, dishwashers, washers).
Think about where you might want the new tankless unit located (same spot, exterior, or garage wall—subject to code and venting).
Call Active Plumbing at (702) 438-3357 and ask about gas tankless water heater installation—mention if you currently have no hot water so we can prioritize.
Common Gas Tankless Installation Situations
Replacing a leaking or failed tank-style water heater
Upgrading for endless hot water (big families, large tubs, multiple showers)
Freeing up space in garages, closets, and utility rooms
Installing a tankless unit during a remodel, addition, or repipe
Swapping out an old tankless that’s at the end of its life or improperly installed
If you’ve already had “no hot water” emergencies, a properly installed tankless can make them far less likely.
Consultation & Sizing
You call (702) 438-3357 and tell us about your home, hot water complaints, and goals. We look at fixture count, usage patterns, and existing gas/electric setup to recommend a properly sized gas tankless unit.
On-Site Evaluation & Estimate
We inspect your current water heater, gas line size and routing, vent path options, and mounting location (garage, outside wall, utility room, etc.). Then we provide upfront pricing for equipment and installation based on real conditions.
Old Heater Removal & Prep
On installation day, we safely shut off gas and water, drain and remove the old tank (if replacing), and prep the new installation area—this may include wall mounting, bracket installation, or minor rerouting of lines.
Tankless Unit, Gas, Water & Vent Install
We mount the new gas tankless heater, run or adapt gas piping (and regulator if needed), install cold/hot connections with isolation/flush valves, and set up approved venting and condensate drain routing as required by code and manufacturer specs.
Startup, Testing & Temperature Set
We purge air, restore water and gas, power up the unit, and check combustion, vent draft (as applicable), flow, and temperature stability. We set an appropriate output temperature and verify hot water delivery at key fixtures.
Cleanup, Walkthrough & Maintenance Tips
We clean up the work area, haul away the old heater (if part of scope), and walk you through basic operation, shutoffs, and maintenance needs—including descaling intervals recommended for Las Vegas hard water conditions.
Tankless Water Heater Installation Active Plumbing fix now
Site visit and evaluation of existing heater, gas line, venting, and location
Properly sized gas tankless heater recommendation based on home demand
Removal and disposal of old tank (if replacing) within agreed scope
Professional installation of tankless unit, gas piping adjustments, water connections, and venting/condensate as required
System startup and testing for leaks, flow, temperature, and combustion/vent performance
Basic homeowner orientation on operation, temperature, shutdown, and maintenance/descaling expectations
Costs & Timelines (What to Expect)
Most straightforward tankless replacements can be completed in one scheduled visit, assuming adequate gas, vent, and location.
You’ll get clear, upfront pricing after we inspect your existing setup and confirm size, location, and any upgrades needed.
Main cost factors include unit size and type (condensing vs non), venting route, gas line upgrades, condensate handling, mounting location, and difficulty of access.
Every proposal breaks out equipment, installation labor, and any required code-related upgrades so you know exactly what you’re paying for.
Insurance & Claims Help
A properly permitted, code-compliant tankless install can be an asset for home sales and inspections.
If you’re replacing a failed tank that caused damage, our documentation can help clarify what failed and what was installed to correct it for restoration or insurance partners.
(Coverage and approval always depend on your insurer and local requirements; this is not financial or legal advice.)
Risks of Waiting (Why Act Now)
Undersized units: Inadequate sizing leads to temperature swings and “not really endless” hot water.
Gas line issues: Incorrect gas sizing can cause poor performance, nuisance shutdowns, or safety concerns.
Bad venting: Wrong vent materials or routing can lead to condensation damage or unsafe exhaust conditions.
Leak risks: Sloppy water connections can leak into walls, garages, or closets, causing hidden damage.
No maintenance planning: Ignoring hard-water scaling can shorten the lifespan of your tankless.
A tankless system is not just a “plug-in replacement”—it’s a different type of heater that needs to be designed and installed correctly.
Methods, Materials & Quality Standards
Manufacturer-spec installation: We follow manufacturer instructions and local code for gas, vent, water, and condensate.
Proper gas sizing: We verify that your gas line and meter/regulator are adequate or clearly explain upgrades if needed.
Condensate & venting done right: Correct vent material, slope, terminations, and condensate management for condensing units.
Service-friendly setup: We install isolation/flush valves for easier descaling and future service.
Hard-water aware: We discuss descaling frequency, filtration/conditioning options, and simple steps to extend unit life.
Frequently Asked Questions
Will a gas tankless really give me “endless” hot water?
Yes—when properly sized and installed, it can provide continuous hot water as long as demand doesn’t exceed the unit’s capacity at that moment.
Can you install tankless in the same spot as my tank?
Often yes, but we’ll verify venting, gas, clearances, and wall mounting options. Sometimes a slightly different location makes more sense.
Is a gas line upgrade always required?
Not always—but many homes do need an upgrade. We’ll measure and evaluate your line and explain if changes are needed.
Do tankless heaters work with Las Vegas hard water?
Yes, but they need proper installation and regular descaling. We’ll set you up for success and explain realistic maintenance.
What temperature do you set the heater to?
We typically set a safe, practical temperature (often around 120°F) and can adjust based on your needs and code/fixture considerations.
Do you offer gas tankless water heater installation near me in Las Vegas?
If you’re in Las Vegas, Henderson, North Las Vegas, Summerlin, or nearby communities, yes—Active Plumbing installs gas tankless water heaters.
More Active Plumbing Water Heater Services
Proudly Serving All of Las Vegas
Address: 3580 Polaris Ave #17, Las Vegas, NV 89103
Phone: (702) 438-3357
Hours: Open 24 hours
Email: service@activeplumbinginc.com
Active Plumbing is Las Vegas–based and available 24/7 for residential and commercial plumbing across Southern Nevada. We handle emergency plumbing, drain cleaning, sewer line repair, slab leaks, water heater repair and installation (including tankless), water softeners and filtration systems, leak detection, gas line installation, and full bathroom and kitchen plumbing upgrades—fast, professional, and backed by strong warranties.
Serving Las Vegas, Henderson, North Las Vegas, Summerlin, Paradise, Spring Valley, Enterprise, Sunrise Manor, Boulder City, and the surrounding neighborhoods.
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Hours: Open 24 hours
3580 Polaris Ave #17, Las Vegas, NV 89103