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3580 Polaris Ave #17, Las Vegas, NV 89103
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High-Efficiency Tankless Water Heater Installation in Las Vegas, NV
Condensing tankless water heaters squeeze extra heat out of exhaust gases to reach higher efficiency ratings than standard tankless or tank-style heaters. That means more hot water per dollar of gas, cooler exhaust, and modern PVC venting—but only when the gas sizing, venting, condensate drain, and water quality are all handled the right way. Active Plumbing installs high-efficiency condensing tankless water heaters in Las Vegas, Henderson, North Las Vegas, Summerlin, and nearby communities—whether you’re upgrading by choice or replacing a failed old heater.
✓ High-efficiency upgrade: Great for energy-conscious homes, heavy hot-water use, and replacements.
✓ Condensing tankless experts: Proper PVC venting, condensate drain, gas sizing, and descaling setup.
✓ Hard-water aware: Installations designed for Las Vegas water, maintenance, and long-term performance.
✓ Licensed local pros: Clean, code-compliant condensing tankless installs in the Las Vegas valley.
✓ High-efficiency upgrade
✓ Hard-water aware
✓ Licensed local pros
✓ Condensing tankless experts
What our Clients think about us
Your satisfaction is our priority.
What Is a High-Efficiency Condensing Tankless Water Heater?
A condensing tankless water heater is a high-efficiency version of a standard gas tankless that:
Uses a secondary heat exchanger to capture extra heat from the exhaust
Achieves higher efficiency ratings (often significantly higher than traditional tanks)
Produces cooler exhaust, allowing for PVC/CPVC/approved plastic venting instead of only metal
Creates condensate (water) that must be drained away safely
A proper installation must address:
Correct sizing for your home’s hot water demand
Gas supply capacity (line size, meter/regulator)
Approved vent materials and routing
Condensate drains and neutralization options, where needed
Service/flush connections for descaling
The result: endless hot water, higher efficiency, and a modern, compact heater—set up for Las Vegas conditions.
Why Choose Active Plumbing
Efficiency-focused design: We help you choose a properly sized condensing unit that actually fits your home’s demand and venting options.
Gas, vent, and condensate done right: We verify gas capacity, design PVC vent routing, and set up a proper condensate drain so moisture doesn’t end up where it shouldn’t.
Las Vegas hard-water smart: We include service/flush valves and explain realistic descaling intervals for local water conditions.
Clean, compact installs: Wall-mounted, tidy plumbing, labeled shutoffs, and venting that makes sense for your layout.
New install or upgrade: Ideal for tank-to-tankless conversions, replacing older standard tankless, or upgrading from a failing tank.
Licensed & insured: Nevada License #0047021, trusted locally for high-efficiency water heater work.
Immediate Actions (What to Do Now)
If your current water heater is leaking, shut off the cold water valve above the heater and avoid using hot water.
If safe, turn off gas or power to the existing water heater.
Take photos of your current heater, the gas line, venting, and surrounding area, plus the rating label if visible.
Count your bathrooms, showers, large tubs, and major hot-water appliances (dishwasher, washing machine, etc.).
Call Active Plumbing at (702) 438-3357 and ask about high-efficiency condensing tankless water heater installation—mention if you currently have no hot water so we can prioritize.
Common Condensing Tankless Installation Situations
Upgrading from an older, less efficient tank-style heater
Replacing a standard (non-condensing) tankless when it reaches the end of its life
Doing a tank-to-tankless conversion during a remodel or repipe
Wanting better energy efficiency and lower gas usage with heavy hot-water use
Creating space in garages, closets, and utility areas by moving to a wall-mounted unit
If you’re already investing in tankless, going high-efficiency condensing can be a smart way to save more over the life of the equipment.
Consultation & Initial Sizing
You call (702) 438-3357 and tell us about your home, current heater, and hot-water needs. We estimate the BTU and flow capacity you’ll likely need and discuss whether a condensing tankless is a good fit for your situation.
On-Site Evaluation: Gas, Vent & Condensate
We come out and inspect your existing heater location, gas line size, vent path options, drain options for condensate, and wall or mounting space. We refine the unit size/model choice based on real-world constraints and your goals.
Clear Proposal & Upgrade Plan
We provide a line-item estimate covering the condensing tankless unit, removal of existing heater (if applicable), gas and vent adjustments, condensate routing, and any code-related upgrades needed for a safe, efficient install.
Equipment Removal & Site Preparation
On installation day, we shut off gas/power and water, drain and remove the old heater (tank or old tankless if in scope), and prepare the wall or location for the new wall-hung condensing unit, including any mounting and layout adjustments.
Condensing Tankless Installation & Connections
We mount the condensing tankless, connect or upgrade gas piping, install cold/hot water connections with isolation/flush valves, run approved PVC/CPVC (or specified) venting, and set up a condensate drain line routed to an appropriate drain or pump.
Startup, Testing & Efficiency-Focused Walkthrough
We restore water and gas, purge and start the unit, and test combustion/venting, temperature stability, flow rates, and safety features. We set a reasonable temperature, then show you how to operate the heater, shut it down, and maintain it, including descaling and simple checks to keep efficiency high.
High-Efficiency Tankless Water Heater Installation Active Plumbing fix now
On-site evaluation and sizing for a high-efficiency condensing tankless unit
Removal and disposal of your old tank or old tankless heater (if part of scope)
Wall-mounted installation of the new condensing tankless unit
Professional gas, water, vent, and condensate connections per code and manufacturer specs
Startup and performance testing for leaks, temperature control, and safe venting
Basic homeowner orientation on operation, efficiency settings, and maintenance/descaling timelines
Costs & Timelines (What to Expect)
Many condensing tankless installations or conversions can be completed in one scheduled visit, depending on gas, vent, and drain access.
You’ll get upfront pricing after we evaluate your existing setup and confirm size, location, and required upgrades.
Main cost drivers: unit size and efficiency rating, gas line and regulator upgrades (if needed), venting complexity, condensate routing/pumping, and how much rework is needed from the old heater.
We’ll clearly separate equipment, labor, and required code upgrades so you know what you’re investing in and why.
Insurance & Claims Help
Water heater failures—and upgrades tied to old or leaking units—often involve insurance and restoration questions:
We can document what type of heater you had, its visible condition, and what we replaced it with (high-efficiency condensing tankless).
If a failing tank or older heater caused water damage, our invoices and notes can help clarify the plumbing cause and corrective work for your insurance adjuster or restoration contractor.
When you’re upgrading as part of a larger restoration or remodel, we can coordinate with your GC and mitigation company so plumbing scope and timing are clear.
(Coverage decisions, depreciation, and any potential discounts are always up to your specific insurer and policy; this is not financial or legal advice.)
Risks of Waiting (Why Act Now)
Improper condensate handling: Can cause water damage, corrosion, or unsafe conditions if condensate isn’t drained correctly.
Wrong vent materials or routing: Condensing units have specific venting requirements—getting this wrong can damage the vent or unit.
Undersized gas supply: Without enough gas, your heater may shut down, underperform, or show error codes.
No descaling access: Without isolation/flush valves, future maintenance is harder and the unit may lose efficiency or fail early.
Leaks and code problems: Shortcut installs can lead to hidden leaks, inspection issues, and warranty headaches.
A high-efficiency unit only pays off if it’s installed and maintained correctly.
Methods, Materials & Quality Standards
Code-aligned, manufacturer-driven installs: We follow local code and manufacturer instructions for gas, venting, condensate, and mounting.
Proper vent and condensate materials: We use approved vent pipe and fittings, with correct slope and support, and route condensate to appropriate drains or pumps.
Gas line verification: We check line size and length to confirm your system can support the new heater—or clearly explain needed upgrades.
Service-ready layout: We include flush valves and accessible piping to make descaling and future service straightforward.
Hard-water-aware setup: We talk through realistic maintenance intervals and basic habits to help your new unit last in Las Vegas conditions.
Frequently Asked Questions
How is a condensing tankless different from a regular tankless?
A condensing unit uses a secondary heat exchanger to capture more heat from exhaust gases, which increases efficiency and results in cooler exhaust and condensate that must be drained.
Can you replace my old tank with a condensing tankless in the same spot?
Often yes, but we’ll verify vent routes, wall space, gas capacity, and condensate drain options and explain what’s feasible.
Will I need a larger gas line for a condensing tankless?
Sometimes. Many tankless units—condensing or not—need more gas flow than older tanks. We’ll test and explain if upgrades are needed.
Do condensing tankless units work well with our hard water?
Yes, as long as they’re installed correctly and descaled regularly. We install service valves and go over maintenance expectations.
Are condensing units louder than regular water heaters?
Noise levels vary by model, but most are comparable to or quieter than many traditional heaters when installed correctly.
Do you offer high-efficiency condensing 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 high-efficiency condensing 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