Hidden Gas-Line and Venting Costs
A $1,500 commodity quote that skips the gas-line upsize or new vent run still ends up costing $5K once the truck shows up. Real specialists flag that on day one.
Nationwide Premium Service
The Nationwide Experts in Tankless Water Heaters.
Fair, honest, brand-neutral information plus vetted local installers who actually specialize in tankless. Get a fast, free virtual estimate. No high-pressure sales calls.
Trusted by 15,000+ Homeowners across 15 states
Authorized Nationwide Partners
RinnaiNavienNoritzRheemBoschA.O. Smith
The Real Decisions
Pre-Sold on Tankless? You Still Have Real Questions.
You already know you want tankless. The hard part is sizing, brand fit, gas-line work, and finding an installer who actually does this every day.
Brand Choice Paralysis
Rinnai, Navien, Noritz, Rheem, Bosch, and AO Smith each fit different homes. Pick wrong and you pay for the mismatch in GPM, warranty, and energy bills for 20 years.
Repair, Descale, or Replace?
An aging unit could need a $45 filter, a $300 descale, or full replacement. Most general plumbers default to ripping it out, which costs you thousands you may not need to spend.
Finding a True Tankless Pro
General plumbers install a couple tankless units a month. True specialists install hundreds. The skill gap shows up in venting, combustion analysis, and warranty paperwork.
Tankless Specialty Services
Every Tankless Service, One Trusted Source
Installation, repair, maintenance, and descaling. Brand-neutral expertise across all six major manufacturers, end-to-end through our vetted local installer network.
Tankless Water Heater Installation
End-to-end tankless installation through our vetted nationwide plumber network. Sizing, permits, gas line, venting, and commissioning.
From $3,000 Learn More →
Tankless Water Heater Repair
Specialty diagnostics and repair for every major tankless brand. Error codes, ignition failure, scaling, leaks, mid-use shutdowns.
From $150 Learn More →
Tankless Water Heater Maintenance
Annual six-step service that catches scale buildup, verifies combustion safety, and resets manufacturer warranty eligibility.
From $175 Learn More →
Tankless Flushing & Descaling
Manufacturer-spec descaling, internal cabinet cleanup, and filter replacement. Highest-impact service for hard-water homes.
From $125 Learn More →
Our Value Proposition
Why Homeowners Pick a Tankless Specialist
Modern technology paired with deep tankless expertise. Brand-neutral advice. No upsell calls.
Specialty Focus on Tankless
We do tankless and only tankless. No general plumbing distractions, no commodity quotes that miss gas-line and venting realities.
Brand-Neutral Recommendations
Authorized partners across all six majors: Rinnai, Navien, Noritz, Rheem, Bosch, AO Smith. We pick the right fit for your home, not the highest commission.
Vetted Local Installer Network
Every partner plumber meets state licensing, manufacturer-level certifications, and tankless-specific experience standards across our 15-state footprint.
Honest, Transparent Pricing
Most quotes inside two minutes via virtual estimate. We surface gas-line and venting costs up front. No pressure to book before you understand the trade-offs.
The Total Tankless Process
From Estimate to Install in 4 Steps
No in-home pitch. No pressure. Just a virtual quote, a vetted local installer, and a done-right job.
1
Tell Us About Your Home
Quick form or call. We ask about your current setup, fuel type, home size, and where the unit lives. 24/7 availability, no in-home pitch required.
2
Get a Virtual Estimate
We send a price range plus brand-neutral unit recommendation, sized for your household's GPM demand and climate zone.
3
Match With a Vetted Local Plumber
Your installer is licensed, brand-trained, and tankless-experienced. They handle permits, gas-line work, venting, and rebate paperwork end-to-end.
4
Install, Test, and Document
Most jobs done in a day. Full flow-rate testing on completion and a documented service report so warranties stay valid year over year.
Most Virtual Estimates in Under 2 Minutes
Tell us about your home, and we'll match you with a vetted local installer plus a transparent price range. No commitment, no pressure.
Side-by-Side
Tankless Specialist vs General Plumber vs DIY
Where the dollars actually go, and what each option leaves on the table. The cheap quote isn't always the cheapest job.
| What's Included | Tankless Specialist | General Plumber | DIY |
|---|---|---|---|
| Brand-specific training across all six majors | – | – | |
| Gas-line capacity audit before quoting | Sometimes | – | |
| Manufacturer-spec venting and condensate routing | Sometimes | – | |
| Transparent pricing with no commodity bait | Sometimes | N/A | |
| Permits, code compliance, and rebate paperwork | Sometimes | – | |
| Warranty stays valid with documented service | Sometimes | – | |
| Combustion analysis on every gas job | – | – |
A specialist costs more up front than a generalist. Over a 20-year unit life, the gap usually flips.
Where We Work
Vetted Tankless Installers in 15 States
From hard-water Phoenix to cold-inlet Boston, we partner with local plumbers who know your state's permit process, water profile, and rebate landscape.
Real Reviews 4.9 / 5 from 15,000+ homeowners
What Homeowners Say
Real reviews from homeowners who trusted us with their tankless installation, repair, and maintenance.
"We were ready to upgrade from a 50-gallon tank to a Navien tankless and got three quotes. Only Total Tankless walked us through the gas-line upsize before we paid for anything. The plumber they sent was clearly tankless-specific. Done in a day."
MR
Marcus R.
March 2026
"Our 12-year-old Rinnai started throwing error code 12 every other shower. Total Tankless's tech diagnosed a flame sensor issue over a virtual call, ordered the OEM part, and had us back up in 48 hours. Honest about cost the whole way."
JL
Jennifer L.
February 2026
"Live in Phoenix, water hardness is brutal. Booked an annual descale and the technician explained why my last DIY flush probably didn't actually move scale through the system. Real expertise, wish I'd called sooner."
DT
David T.
February 2026
"Compared four installers in NJ. Total Tankless was the only one that gave me a straight answer on whether condensing was worth the extra cost for my situation. Brand-neutral advice was the difference."
PS
Priya S.
January 2026
"Switched from electric tank to gas tankless. The conversion was complicated. They handled permits, gas-line upgrade, venting from scratch, and rebate paperwork. Came in within $200 of the virtual estimate."
RK
Robert K.
December 2025
"I had three other plumbers tell me my Noritz needed replacement. Total Tankless found it was a clogged inlet filter, a $45 fix instead of a $5,000 rip-out. That's the brand-neutral expertise this market needs."
AH
Amanda H.
November 2025
15,000+
Homeowners Trusted
15
States Served
6
Major Brands
24/7
Free Virtual Estimates
Common Questions
Tankless Water Heater Questions, Answered
Honest answers about pricing, brands, install timelines, and rebates. The questions homeowners ask us most.
How much does a tankless water heater installation cost?
Most homeowners invest $5,000 to $9,000 for a whole-home gas tankless conversion, installed. A tankless-to-tankless replacement runs $3,000 to $5,500 since the gas, vent, and water infrastructure is already in place. Final pricing depends on gas-line capacity, venting run, accessibility, and whether your home needs an electric-to-gas conversion.
Are tankless water heaters worth the upfront cost?
For most homeowners staying in their home 5+ years with normal-to-heavy hot-water demand, yes. You get continuous hot water, double the lifespan (20+ years vs 10-12 for tank units), no standby loss, and federal IRA Section 25C credits up to $600 for qualifying units. The upfront premium of $2K-$3K usually pays back in efficiency plus avoided early-replacement cost.
Which tankless brands do you work with?
All six majors: Rinnai, Navien, Noritz, Rheem, Bosch, and AO Smith/Takagi. We're brand-neutral, so we recommend the right unit for your home's GPM demand, gas-line capacity, and rise-temperature, not the brand that pays the highest commission.
Do you service my state, and what warranty applies?
We currently serve Arizona, California, Colorado, Florida, Indiana, Maryland, Massachusetts, Nevada, New Jersey, New York, North Carolina, Pennsylvania, Texas, Utah, and Virginia. Manufacturer warranties (typically 12-15 years on heat exchanger) apply to all units we install, plus our local partners back labor for one year minimum. Warranty validity requires annual maintenance, and we can document that for you.
How long does installation take?
Most tankless-to-tankless replacements complete in 4-6 hours. A first-time tank-to-tankless conversion typically runs a full day, especially if the gas line needs upsizing or the venting path needs to be redone. Electric-to-gas conversions can run 1-2 days due to the new gas service.
What rebates and tax credits am I eligible for?
Federal IRA Section 25C offers up to $600 for qualifying high-efficiency tankless units installed through 2032. Most of our 15 served states also have utility-level rebates. California (TECH Clean), Massachusetts (MassSave), New York (NYSERDA), New Jersey (Clean Energy Program), Maryland (EmPOWER), and others stack on top of the federal credit. We document eligibility before install.
Get Your Free Virtual Estimate Today
Available 24/7, no obligation. Most homeowners get a price range and matched installer in under two minutes.