Tankless Unit and Mounting
We supply and mount a Rinnai, Navien, Noritz, or Takagi unit sized for your home. Wall brackets, seismic strapping, and clearance to combustibles are all handled to code. You do not buy the unit separately.
Licensed
Licensed & Bonded
Fully Insured
Insured & Bonded
24/7 Emergency
Same-Day Response
Warranty Backed
Workmanship Guaranteed in Dallas
What Is Included in a Tankless Conversion
Every conversion we quote includes the unit, the labor, the permit, and the haul-away. Here is the breakdown so you know exactly what you are paying for and what would be an add-on.
Gas Line and Venting
New gas flex connector, properly sized supply line, and stainless steel or PVC venting run to code. We terminate the vent where exhaust cannot re-enter the home. Combustion analysis is performed before we leave.
Water Line Rerouting
Copper pipe or PEX tubing rerouted from the old tank location to the new wall-hung unit. Isolation valves and a pressure relief valve are installed so future flushing and service are simple.
Permit and Inspection
We pull the City of Dallas plumbing permit and meet the inspector on site. You get the signed-off paperwork for your records. This matters at resale and for warranty claims.
Old Tank Haul-Away
We drain, disconnect, and remove the old tank at no extra charge. The unit leaves with us the same day. No tank sitting on the curb waiting for bulk pickup.
Warranty Registration
We register the manufacturer warranty in your name and hand you the documentation. Labor is warrantied for 2 years on top of the manufacturer coverage on parts and heat exchanger.
What Tankless Water Heater Conversion Dallas TX Actually Involves
Tankless Water Heater Conversion Dallas TX is the process of removing a storage-tank water heater and replacing it with a wall-mounted on-demand unit, which means new gas sizing, new venting, and often a relocated water and gas connection. It is not a swap-in. A 50-gallon tank and a Rinnai or Navien unit share almost no installation hardware. We pull the old tank, cap and reroute the copper pipe or PEX tubing, run stainless steel venting through the wall or roof, and mount the unit where it will not freeze or block a walkway.
Most Dallas homeowners call us because the tank is on its last legs. A 12-year-old Bradford White in a Lakewood bungalow, a leaking Rheem in a Deep Ellum loft, or a gas tank that cannot keep up with three showers on a Sunday morning. We also get calls after a freeze event when a tank cracks. If you have been searching for tankless water heater conversion Dallas TX near me, we run same-day assessments across the metro and can usually convert within 48 hours of approval.
Our Tankless Conversion Process
Every conversion follows the same five steps. You know what happens, when it happens, and what it costs before we start.
01
Schedule
Call or book online — a real human picks up and confirms a 2-hour arrival window.
02
Diagnose
Licensed tech inspects on-site, then walks you through the cause and your options.
03
Fix
The job is completed to code and done right the first time — no shortcuts, no surprises.
04
Guarantee
Every job backed by a written workmanship warranty — and we stand behind it.
Tools and Methods We Use on Every Conversion
Tools & Equipment
Manifold Pressure Gauge
Verifies incoming gas pressure at the meter and at the unit. A tankless unit needs specific pressure to fire reliably, and we confirm it before and after install.
Combustion Analyzer
Measures carbon monoxide and oxygen in the exhaust. Every gas conversion gets a combustion test before we sign off, which is required for code compliance and warranty.
Water Flow Meter
Measures actual gallons per minute at the fixtures. Sizing a tankless unit without a real flow reading is guesswork. We measure, then size.
Thermal Camera
Finds hidden leaks, cold spots in supply lines, and venting hot spots behind walls. Useful in older Dallas homes where plumbing paths are not documented.
Descaling Pump and Flush Kit
Circulates descaling solution through the heat exchanger to strip mineral buildup. We use it on every maintenance visit and on any conversion where the previous tank ran on hard Dallas water.
Pipe Wrench and Tube Brush
Standard tools for gas and water line work. The tube brush cleans burner ports and flame sensors during ignition and burner service.
Multimeter
Tests voltage at the control board, flow sensor, and igniter. Most error codes trace back to an electrical fault that a multimeter identifies in minutes.
Methods & Standards
Uniform Plumbing Code (UPC) Compliance
Every conversion is installed to UPC standards for gas sizing, venting clearances, and pressure relief valve placement. The City of Dallas inspector signs off on the same code book, so there are no surprises at inspection.
Manufacturer-Specific Training Protocols
Rinnai and Navien publish specific install requirements for vent length, gas pressure, and clearances. We follow the manufacturer's manual to the letter, which is what keeps the heat exchanger warranty valid for the full 10 to 15 years.
Peak-Demand Sizing Calculation
We calculate peak hot-water demand in gallons per minute using fixture count, simultaneous use assumptions, and Dallas groundwater temperatures that drop to 55 degrees in winter. Oversized units short-cycle; undersized units run out. Sizing is the single most important decision.
Combustion Analysis Verification
After install, we run a combustion analyzer on the exhaust and confirm CO and O2 levels are within manufacturer spec. This is not optional on a gas appliance, and it is what separates a code-correct install from a risky one.
When Dallas Homeowners Call Us for Conversion
01
A 12-year-old tank in a Lakewood bungalow starts leaking at the base on a Friday afternoon.
What we do: We assess the same day, quote a Navien conversion with a short vent run through the side wall, and install Saturday morning. The old tank is hauled away and the permit is pulled Monday.
→ Hot water restored within 24 hours, no weekend hotel stay, and a unit that will outlast two more tanks.
02
A growing family in North Dallas keeps running out of hot water with three teenagers and two bathrooms in use at once.
What we do: We measure peak demand at 9.5 GPM, size a 199,000 BTU Rinnai, and add a recirculation pump so hot water reaches the far bathroom in seconds instead of 40.
→ Back-to-back showers with no temperature drop, and hot water at the tap in under 5 seconds.
03
A Deep Ellum loft owner wants to reclaim the utility closet footprint currently occupied by a 50-gallon tank.
What we do: We mount a Noritz unit high on the wall, reroute the copper pipe and gas flex connector, and run stainless steel venting through the exterior wall. Permit and inspection handled in one visit.
→ Full closet back for storage, gas bill down about 25 percent, and a 15-year heat exchanger warranty registered in the owner's name.
04
A University Park homeowner is renovating a kitchen and adding a fourth bathroom, and the existing tank cannot handle the new load.
What we do: We calculate the new peak demand, upgrade the gas line to handle the higher BTU load, and install a manifolded pair of tankless units with isolation valves for easy service.
→ The renovated home has hot water at every fixture, and the system has redundancy if one unit needs service.
05
A South Dallas rental property owner is tired of emergency tank replacements every few winters.
What we do: We convert all units to tankless with freeze protection kits and set up an annual descaling schedule. Tenants get consistent hot water and the owner stops paying for emergency calls.
→ Zero emergency water-heater calls in the following two winters and predictable annual maintenance cost.
How Tankless Conversion Runs in Dallas
Dallas has hard water, hot summers, and occasional hard freezes. All three affect tankless conversions. Hard water accelerates scale buildup inside the heat exchanger, so we install isolation valves and recommend a water softener integration on every conversion. Summer inlet water temperatures run 75 to 80 degrees, which means a smaller unit can hit higher flow rates than the same unit in a colder climate. Winter flips that: inlet water drops to 55 degrees, and the unit works harder to hit the same outlet temperature. We size for winter, not summer. Older Dallas neighborhoods like Lakewood and Oak Lawn often have galvanized supply lines and tight utility closets, so rerouting is common. Newer construction in Uptown and North Dallas usually has PEX tubing and more flexible venting paths. The City of Dallas requires a plumbing permit on every water heater replacement and conversion, and we pull it on every job. If you are searching for same-day tank to tankless water heater conversion in Dallas 24/7, we run emergency calls across Dallas County and can usually be on site within 90 minutes for active leaks.
Neighborhoods We Serve
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Lakewood
Many 1920s and 1930s bungalows have galvanized supply lines and tight closets. Rerouting to PEX and mounting the unit high on the wall is standard on most conversions here.
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Uptown Dallas
Condos and high-rises often have utility closets with strict venting paths. We frequently run PVC venting through an interior chase to meet HOA and code requirements.
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Deep Ellum
Loft conversions and mixed-use buildings need careful gas line sizing. We verify manifold pressure at the meter before quoting, since shared gas service can limit available BTU.
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University Park
Larger homes with multiple bathrooms need higher flow rates. Manifolded tankless pairs or a single high-BTU unit sized for peak demand is the usual answer.
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North Dallas
Newer construction with PEX tubing and accessible venting paths makes conversions faster. Most installs here finish in a single day with a short vent run through the side wall.
Local Conditions We Plan For
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Hard water at 8 to 12 grains per gallon
Scale builds up inside the heat exchanger and reduces flow over time. We install isolation valves and recommend a water softener integration so descaling is simple and the unit lasts its full rated life.
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Winter inlet water temperatures near 55 degrees
Cold inlet water forces the unit to work harder to hit the setpoint. We size for winter demand, not summer, so you never run out of hot water in January.
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Occasional hard freezes in North Texas
Tanks in garages and unheated closets crack when temperatures drop into the teens. We install freeze protection kits and insulate exposed lines so the unit rides out the cold snap.
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City of Dallas plumbing permit requirement
Every water heater replacement and conversion requires a permit and inspection. We pull it on every job and meet the inspector on site, so the paperwork is clean at resale.
Lakewood Bungalow Tank Replacement
Problems a Tankless Conversion Solves for Dallas Homes
If any of these sound familiar, a tankless water heater conversion Dallas TX is the fix. We see the same handful of failures over and over in Dallas homes.
Problem
Running out of hot water mid-shower
A 40 or 50-gallon tank cannot keep up with two showers plus a dishwasher. The last person in gets a cold surprise, and the household schedules around the tank instead of the other way around.
Our Fix
A correctly sized tankless unit delivers 7 to 11 GPM continuously. We size it for your peak demand, so three fixtures running at once still get hot water. No recovery time, no waiting.
Problem
Tank leaking or rusting at the base
A leaking tank can flood a closet, damage drywall, and warp flooring. Once the tank shell rusts through, there is no repair. It will fail completely, usually at the worst possible time.
Our Fix
We convert to tankless before the tank lets go. If it already leaked, we handle the water cleanup, replace the unit, and reroute connections so the new install has no tank to fail in the first place.
Problem
High gas bills from standby heat loss
A storage tank reheats water around the clock, even when nobody is home. Dallas homeowners pay for that standby loss every month, and it adds up to hundreds of dollars per year.
Our Fix
Tankless units fire only when a hot tap opens. Most Dallas conversions cut water-heating gas use by 20 to 30 percent. The savings show up on the first full billing cycle after install.
Problem
No space in a tight utility closet
Older Dallas homes and condos often have a tank crammed into a closet with no clearance. That footprint blocks storage, complicates service access, and makes code compliance difficult.
Our Fix
A wall-hung tankless unit frees the floor. We mount it high, run venting through the wall or roof, and reclaim the space. In Uptown and Downtown condos, that reclaimed square footage is often the deciding factor.
Problem
Freeze damage after a North Texas cold snap
Tanks in garages and unheated closets crack when temperatures drop into the teens. A cracked tank means no hot water, water on the floor, and an emergency call in the middle of a freeze.
Our Fix
We install freeze protection kits, insulate exposed lines, and set the unit to cycle during hard freezes. Tankless units with proper freeze protection ride out Dallas winters without cracking.
Why Dallas Homeowners Switch to Tankless
A tankless conversion changes how your house makes hot water. Here is what that means in real numbers, not brochure language.
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Endless Hot Water
A properly sized tankless unit delivers 7 to 11 gallons per minute continuously. That means back-to-back showers, a running dishwasher, and a load of laundry at the same time without the temperature dropping. No more waiting 30 minutes for the tank to recover after the last person showers.
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Lower Gas Bills
Tankless units only fire when you open a hot tap. A storage tank reheats water 24 hours a day, even when you are asleep or at work. Dallas homeowners typically see 20 to 30 percent lower water-heating gas use after a tank to tankless water heater conversion Dallas, and the savings show up on the first full billing cycle.
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Reclaims Floor Space
A 50-gallon tank eats a 2-foot by 2-foot footprint plus clearance. A wall-hung Navien or Noritz frees that space for storage, a utility sink, or a washer and dryer. In tight Dallas closets and garages, that reclaimed square footage is often the deciding factor for the conversion.
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Longer Service Life
Tanks last 8 to 12 years. Tankless units run 18 to 22 years with annual descaling. Over a 20-year window, you buy one tankless unit instead of two tanks. Add the 10 to 15 year heat exchanger warranties from Rinnai, Navien, and Takagi and the math favors the conversion.
Licensed, Certified, and Reviewed
Licensed & Certified
- Texas State Board of Plumbing Examiners (TSBPE) License — issued by Texas State Board of Plumbing Examiners
- NATE Certification — issued by North American Technician Excellence
- EPA Section 608 Certification — issued by U.S. Environmental Protection Agency
- OSHA Safety Certification — issued by Occupational Safety and Health Administration
- Rinnai and Navien Manufacturer Training — issued by Rinnai America and Navien Inc.
Verified Reviews
Google ★★★★★4.9
Quoted a fair price, pulled the permit, and installed our Navien in one day. The technician walked us through the controls and registered the warranty for us. Hot water has been rock solid for six months.
Yelp ★★★★★4.8
Our old tank started leaking on a Saturday. They came out the same day, quoted a conversion, and had it installed by Tuesday. Clean work, hauled the old tank away, and the inspector signed off first try.
BBB ★★★★★4.9
We manage six rental units and they converted the whole building to tankless over two days. No tenant complaints, no emergency calls since. They know Dallas code and they do not cut corners on venting.
Google ★★★★★5.0
Called about an error code on our Rinnai. They diagnosed a flow sensor, had the part on the truck, and fixed it the same visit. Honest pricing and no upsell. Will use them for the annual descaling.
Tankless Conversion Expertise You Can Verify
Our technicians hold Texas State Board of Plumbing Examiners (TSBPE) licenses and carry NATE certification on gas appliance work. We complete manufacturer-specific training with Rinnai and Navien, which matters because those two brands make up most of the tankless units we install in Dallas. Every conversion is performed to Uniform Plumbing Code (UPC) and International Plumbing Code (IPC) standards, and we pull permits on every job. We have converted tanks in bungalows, high-rises, and restaurants across Dallas County, and we know what each building type demands.
- TSBPE-licensed plumbing contractors on every job, no subcontractors
- NATE-certified gas technicians for combustion analysis and manifold pressure testing
- Manufacturer-trained on Rinnai, Navien, Noritz, and Takagi residential and commercial units
- EPA Section 608 certification for refrigerant and gas handling compliance
- OSHA safety certification on every crew, including confined-space and roof work
Frequently Asked Questions About Tankless Conversion in Dallas
Real answers to the questions we hear most often from local homeowners and property managers.
How much does tankless water heater conversion cost in Dallas TX?
Most residential conversions in Dallas run $3,200 to $6,500 in 2026, including the unit, venting, gas line work, permit, and labor. A basic 199,000 BTU indoor unit with short vent runs sits at the low end. Longer vent runs, gas line upgrades, or a recirculation pump push the number higher. We quote flat-rate before we start.
Is it worth converting to a tankless water heater in Dallas?
Yes, if you plan to stay in the home more than five years. Tankless units last 18 to 22 years versus 8 to 12 for a tank, cut water-heating gas use by 20 to 30 percent, and end the run-out-of-hot-water problem. The break-even point on a Dallas conversion usually lands between year four and year six.
How long does a tankless water heater conversion take in Dallas?
A standard residential conversion takes one day, usually 6 to 8 hours on site. Complex jobs with long vent runs, gas meter upgrades, or a relocation to a different wall can stretch to two days. We schedule the permit inspection separately, usually within 48 hours of install.
What is needed to convert from tank to tankless in Dallas?
You need a properly sized tankless unit, a dedicated gas line sized for the BTU load, stainless steel or PVC venting to code, a 120V circuit for controls, and a pressure relief valve. Most Dallas homes also need the water and gas connections rerouted. We handle all of it under one permit.
Related Tankless Water Heater Services
Tankless Water Heater Installation
New-build and remodel installs across Dallas. If you are converting from a tank, this is the same crew and the same permit path. We size the unit for your fixtures and run venting to code.
View Tankless Water Heater InstallationTankless Water Heater Repair
Error codes, ignition failure, and no-hot-water calls. We stock common parts for Rinnai, Navien, and Rheem units so most Dallas repairs finish the same day. Diagnostic fee is waived if you approve the repair.
View Tankless Water Heater RepairTankless Water Heater Maintenance
Annual service keeps your new conversion under warranty. We inspect the heat exchanger, test gas pressure, and check venting. Skipping maintenance is the fastest way to void a 15-year heat exchanger warranty.
View Tankless Water Heater MaintenanceTankless Water Heater Replacement
When an existing tankless unit fails, we swap it with minimal downtime. If your old unit is out of warranty and parts are scarce, we can upgrade to a newer, higher-efficiency model during the same visit.
View Tankless Water Heater ReplacementTankless Water Heater Tune-Ups
A tune-up covers combustion analysis, flame sensor cleaning, and flow verification. We recommend one every 12 months in Dallas, where hard water accelerates scale buildup inside the heat exchanger.
View Tankless Water Heater Tune-UpsTankless Water Heater Flushing & Descaling
Dallas water runs hard, and scale is the number one killer of tankless units. We use a descaling pump and flush kit with food-grade descaling solution to strip mineral buildup and restore flow rate.
View Tankless Water Heater Flushing & DescalingContact Our Dallas Tankless Team
Call (214) 817-0188 any time, day or night, and we'll get a real person on the line. For non-emergency work, most Dallas jobs get a same-day or next-day appointment. You can also email info@waterheaterrepairs.com and we'll respond within one business day.
Water Heater Repairs
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Phone
(214) 817-0188 -
Address
14205 Proton Rd, Dallas, TX 75244, Dallas, Texas
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Hours
Mon–Fri: 7AM – 7PM
Sat: 8AM – 4PM
Sun: Emergency Only
24/7 Emergency Available