Tankless Water Heaters · Waco, Texas
Tankless Water Heaters in Waco, TX
Endless hot water is real — but in Central Texas it comes with homework: flow-rate sizing, gas supply capacity, and descaling on a calendar. Falcon 5 handles all three, and the price goes in writing before any work starts.
4.9 Google rating · 142+ reviewsLicensed & insured1-year labor warrantyUpfront pricing before work begins
When Homeowners Start Looking at Tankless
The old tank is dying and you want to upgrade
A tank-to-tankless conversion is the most common way people arrive here. It is a bigger job than a straight swap — we price both honestly so you can compare on real numbers.
Hot water runs out with a full house
A tankless unit never runs out, but it can only heat so many gallons per minute at once. Two showers and a dishwasher is a different unit than one shower — sizing to simultaneous demand is the whole game.
You want the floor space back
Wall-mounted tankless units free up the garage corner or interior closet a 50-gallon tank occupies. On slab homes, that closet is expensive real estate.
An existing tankless is flashing error codes
Scale, ignition, and flow-sensor codes are the usual suspects here. We service Rinnai, Navien, and other common brands — often the fix is a proper descale, not a new unit.
What Central Texas Water Does to Tankless Units
Limestone-hard water is the deciding factor in whether a tankless unit here runs for two decades or struggles at ten years.
Scale chokes heat exchangers
The same minerals that fill tanks with sediment coat tankless heat exchangers. Descaling on a schedule — with isolation valves installed so the flush is easy — is not optional in McLennan County.
Conversions on slab-on-grade homes
Most homes around Waco sit on slabs, so relocating water and gas lines for a wall-mount unit takes planning. We map the routing during the assessment, not mid-job.
Gas supply is the hidden variable
A tankless burner draws several times the gas a standard tank does. Plenty of homes in Hewitt and Woodway need a gas line upsize as part of the conversion — better to learn that in the written quote than during the install.
How the Job Works
Call or book online
Tell dispatch what you have now — tank or tankless, gas or electric — and we schedule the assessment, with 24/7 availability if you are out of hot water entirely.
Flow-rate and fuel assessment
We count fixtures, ask how your household actually uses hot water, and check gas line size and venting paths before recommending a unit.
Written quote, approved first
The quote covers the unit, venting, gas work, isolation valves, and condensate handling. Nothing starts until you approve it.
Install, test, and warranty
We set the unit, run new venting where required, verify temperature and flow at every fixture, and back the work with a 1-year labor warranty.
What Moves the Price on a Tankless Job
The unit itself is often the smaller half of the math. Three things move tankless pricing more than the brand on the box:
Gas line and venting changes
Conversions frequently need a larger gas supply and dedicated stainless or PVC venting. A straight tankless-for-tankless swap skips most of that labor.
Flow-rate capacity
Higher simultaneous demand means a larger unit — or two units cascaded. Big households with garden tubs price differently than a two-person home.
Conversion labor
Moving from a tank means new mounting, routing, and condensate work. Financing is available on qualifying larger installs, which often makes the conversion math easier to live with.
You approve the price before any paid work starts. Diagnosis comes first, then written repair options — no surprise add-ons at the end of the visit. Financing options are available on qualifying projects →
What Waco Neighbors Say
4.9from 142+ Google reviewsRead all reviews →
“Had a last minute emergency. Amazing response from the owner himself and came out to save the day. If you're looking for a true honest HVAC/plumbing company, give them a call.”
“Needed a gas line run for my generator. Falcon 5 came and took care of it. They're honest on time and very reasonably priced.”
Related Services & Guides
More From This Service Line
Tank Water Heater Installation
A standard tank is still the right answer for most homes around here — when it is sized from how the household actually uses hot water and installed with every code item already in the written quote.
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Gas Water Heaters
Gas tanks recover fast and keep making hot water through a power outage — but venting, combustion air, and gas line sizing decide whether the install is safe and to code.
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Electric Water Heaters
No burner, no flue, no gas line — electric units are the simple, serviceable choice, and in all-electric neighborhoods they are the only choice.
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Commercial Water Heaters
When a restaurant dish line, a salon, or a twelve-unit property loses hot water, it is a revenue problem, not a comfort problem.
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Straight Answers, Before You Call
Does tankless really mean endless hot water?
Yes, with a caveat: endless in duration, limited in simultaneous flow. A properly sized unit keeps a shower hot forever, but three showers at once can outrun a small one. That is why the assessment counts fixtures instead of guessing.
How often does a tankless unit need descaling here?
In our hard water, roughly once a year for most households — more often with heavy use, less if you have a softener. We install isolation valves with every unit so the flush takes an hour, not an afternoon. Skipping it is the number one reason tankless units disappoint in Central Texas.
Is tankless worth the extra cost over a new tank?
Depends on what you value. Tankless wins on lifespan, floor space, and never running out; a tank wins on upfront cost and simpler service. We put both numbers in front of you and tell you which we would pick for your household — sometimes that answer is the tank.
My tankless was installed by someone else. Will you work on it?
Yes. We descale, diagnose error codes, and repair Rinnai, Navien, Rheem, and other common brands regardless of who set them. If a unit was never fitted with isolation valves, we can add them so future flushes are straightforward.
Book a visit
Get a price you approve before work starts.
Call +1 (254) 717-0083 to talk it through, or send the request form and we confirm your window fast. Estimates are written, itemized, and yours to say yes or no to.
- Same-day appointments for active problems
- Upfront pricing — you approve before work starts
- Licensed & insured, 1-year labor warranty
- 4.9★ on Google from 142+ local reviews