Every annual inspection covers the full function of your tankless unit: descaling, safety testing, and a written report. Parts that fail get quoted separately, and we never replace anything without your approval. Here is what you get on a standard visit.
We circulate a food-grade descaling solution through the heat exchanger with a pump and flush kit for 30 to 45 minutes. On heavily scaled Dallas units we run a second cycle. This is the single most important step in restoring lost flow and efficiency.
The inlet water filter catches grit and scale before it reaches the heat exchanger. We pull it, clean it, and replace it if it is degraded. A clogged filter is one of the most common causes of pressure drop and reduced hot water flow.
On gas units we check inlet and manifold pressure with a gauge and run a combustion analyzer at the exhaust. We verify CO and CO2 levels are inside the manufacturer range and confirm the unit is burning clean. Unsafe readings get corrected before we leave.
We test flame failure response, the high-limit switch, and the pressure relief valve. We also inspect the gas flex connector and stainless steel venting for corrosion, improper slope, or blockages. Safety faults are non-negotiable and get fixed on the spot.
You get a dated report with inlet and outlet temperatures, flow rate, gas pressure readings, combustion numbers, and photos of anything we flag. It doubles as your warranty maintenance record for Rinnai, Navien, Noritz, and A.O. Smith claims.
A tankless water heater annual inspection Dallas TX is a full-system service where we descale the heat exchanger, test the gas and water controls, and verify the unit is running inside manufacturer spec. We pull the front cover, run a descaling pump and flush kit through the unit with a food-grade descaling solution, then check the inlet water filter, isolation valves, and pressure relief valve. From there we test flame failure response, ignition, and manifold pressure with a gauge, and we scan the heat exchanger with a thermal camera for hot spots that signal scale or cracking.
Dallas water runs hard, and that mineral load is the main reason a tankless unit loses capacity after two or three years. Scale buildup on the heat exchanger forces the burner to work harder, drives up gas use, and eventually triggers error codes or a full shutdown. That is why we recommend tankless water heater yearly service Dallas TX on a 12-month cycle, and every 6 months if you have a whole-home water softener that is undersized or you are on a well. A same-day tankless water heater yearly service in Dallas 24/7 call is available when a unit quits mid-winter.
Five steps, start to finish. Most annual inspections take 60 to 90 minutes depending on unit size and how much scale has built up.
Schedule
Call or book online — a real human picks up and confirms a 2-hour arrival window.
Diagnose
Licensed tech inspects on-site, then walks you through the cause and your options.
Fix
The job is completed to code and done right the first time — no shortcuts, no surprises.
Guarantee
Every job backed by a written workmanship warranty — and we stand behind it.
Descaling Pump and Flush Kit
Circulates descaling solution through the heat exchanger to dissolve mineral scale. This is the core tool for any annual flush and the main reason flow rate recovers after service.
Combustion Analyzer
Measures CO and CO2 at the exhaust on gas units. We use it to confirm the burner is running clean and to catch venting problems before they become a safety issue.
Manifold Pressure Gauge
Verifies gas pressure at the manifold is inside the manufacturer range. Low or high pressure causes ignition faults, flame failure, and inconsistent hot water.
Thermal Camera
Scans the heat exchanger for hot spots that signal scale buildup or cracking. Catches problems that do not show up in a standard function test.
Multimeter
Tests the igniter, flame sensor, and control board circuits. Most intermittent error codes trace back to a component that fails under load but tests fine cold.
Water Flow Meter
Measures actual flow rate at the outlet so we can compare against spec. A drop in flow is the first sign of scale or a clogged inlet filter.
Manufacturer Service Procedure
We follow the service manual for each brand, whether it is Rinnai, Navien, Noritz, Takagi, Bosch, Rheem, A.O. Smith, Bradford White, Stiebel Eltron, or Eemax. That means the right descaling interval, the right gas pressure spec, and the right combustion targets for your exact model.
Uniform Plumbing Code (UPC) Compliance
All venting, gas connections, and pressure relief valve work is done to UPC and International Plumbing Code (IPC) standards. Dallas inspectors check this, and we want your install to pass on the first walk-through.
Combustion Analysis Protocol
Every gas unit gets a combustion test at the exhaust during the annual inspection. We compare readings against the manufacturer spec and correct any drift before we sign off on the unit.
Documented Service Record
We log every reading and photograph anything we flag. That record goes to you in writing and supports warranty claims on the heat exchanger, which manufacturers tie to documented annual maintenance.
01
What we do: We run a full descale, clean the inlet filter, test gas pressure and combustion, and check all safety controls. The visit takes 60 to 90 minutes and you get a written report with all readings.
→ Your unit is back inside manufacturer spec, and you have a dated service record for warranty purposes.
02
What we do: We perform a tankless water heater annual inspection in Uptown Dallas or wherever the property sits, and provide a written report with photos and all test readings. Real estate agents get a clean document for the file.
→ Buyer and seller both know the exact condition of the unit, which removes a common negotiation sticking point.
03
What we do: We read the fault history, test the igniter, flame sensor, and gas valve, and run a combustion analysis. If a part has failed, we replace it during the same visit whenever possible.
→ The code is cleared, the unit runs clean, and you avoid an emergency call on a weekend.
04
What we do: We set up an annual inspection contract with priority scheduling. Every visit covers descaling, safety testing, and a written report on each unit in the bank.
→ You catch failing parts before they take the unit down, and you keep hot water running for your business.
Dallas water is moderately hard, running roughly 8 to 12 grains per gallon depending on the source. That mineral load is why tankless units here scale up faster than in softer-water markets, and it is why we push a strict 12-month cycle for tankless water heater yearly service Dallas TX. Summer heat also matters: incoming ground water can hit 80 degrees or higher, which changes the temperature rise the unit has to deliver and can mask a scaled heat exchanger until winter demand exposes it. Building stock plays a role too. Older homes in Oak Lawn and East Dallas often have tankless units retrofitted into tight mechanical closets with marginal venting, while newer builds in Uptown and North Dallas tend to have proper stainless steel venting and isolation valves already installed. We check venting slope and termination clearances on every visit because Dallas code inspectors do. If you are looking for a tankless water heater annual inspection Dallas TX near me, we cover the whole city and Dallas County, and we can usually get you on the schedule within a few days.
Uptown Dallas
High-rise condos and newer townhomes with tight mechanical closets. Venting clearances and access panels get extra attention here because space is limited.
Oak Lawn
Mix of older homes and retrofits. Many units were installed without isolation valves, which makes descaling harder. We add them during the inspection when they are missing.
Lakewood
Larger single-family homes with higher fixture counts. Sizing and flow rate get checked closely because undersized units here struggle during morning demand.
University Park
Older housing stock with hard water. We see more scale buildup here than almost anywhere else in Dallas, so 12-month intervals are non-negotiable.
North Dallas
Newer construction with proper venting and isolation valves already in place. Inspections here are usually faster and focus on combustion and flow testing.
Hard water at 8 to 12 grains per gallon
Scale builds on the heat exchanger faster than in soft-water markets. We recommend 12-month service intervals for most Dallas homes and 6-month intervals for well water or homes without a softener.
Summer ground water above 75 degrees
Higher inlet temperatures reduce the temperature rise the unit needs to deliver, which can hide a scaled exchanger until winter. We test flow rate and outlet temperature under load to catch it.
Hard freezes in January and February
Exposed units in garages or on exterior walls can crack during a hard freeze. We check freeze protection and insulation on every annual visit before winter.
Older homes with retrofitted tankless units
Venting and gas line sizing in older Dallas homes often need correction. We verify both against UPC and IPC standards and flag anything that would fail a Dallas inspection.
Most tankless failures we see in Dallas start small and get ignored. An annual inspection catches them while they are still cheap to fix.
Problem
Scale on the heat exchanger restricts flow, so the unit cannot keep up with demand. Left alone, it short-cycles and eventually locks out with an error code.
Our Fix
We descale the heat exchanger with a pump and flush kit, clean the inlet filter, and verify flow rate at the tap. Most units recover full capacity after one proper flush. If the exchanger is too far gone, we tell you straight and quote replacement.
Problem
Ignition failure and flame failure codes usually start as occasional faults, then become constant. A failed flame sensor can shut the unit down completely within weeks.
Our Fix
During the annual inspection we read the fault history, test the igniter and flame sensor with a multimeter, and check manifold pressure. Most code issues trace back to a $40 to $120 part that we carry on the van.
Problem
A scaled heat exchanger forces the burner to run longer to hit the same outlet temperature. You pay for the extra runtime every month until the unit is serviced.
Our Fix
Descaling restores heat transfer efficiency, which cuts runtime and gas use. We log inlet and outlet temperatures before and after so you can see the difference in the report. Most Dallas homes notice the change on the next bill.
Problem
Exposed units in garages or on exterior walls can crack a heat exchanger or burst a fitting during a hard freeze. That is a repair in the thousands, not hundreds.
Our Fix
We inspect freeze protection during the annual visit, check insulation and drain-down valves, and confirm the unit is set up to handle a hard freeze. If protection is missing, we install it before winter hits.
An annual inspection is the cheapest way to protect a tankless unit. Here is what you actually get out of it.
Restores Lost Hot Water
Scale cuts flow through the heat exchanger, so showers run lukewarm and the unit short-cycles. A full descale with a descaling pump and flush kit clears that mineral layer and brings flow back to spec. Most units we service in Dallas recover 90% or more of their original flow rate after the first proper flush.
Catches Error Codes Early
Ignition failure, flame failure, and pressure drop codes usually start as intermittent faults. During tankless water heater annual inspection in Dallas, Texas, we read the fault history, test the igniter and flame sensor, and check manifold pressure with a gauge. Fixing a $60 sensor now beats a $900 heat exchanger later.
Cuts Gas and Power Bills
A scaled heat exchanger has to burn longer to hit the same outlet temperature. Once we descale and reset the unit, most Dallas homes see a measurable drop in gas use, especially on Rinnai and Navien condensing models. You also stop paying for the extra runtime that scale forces on the burner.
Protects Your Warranty
Rinnai, Navien, Noritz, and A.O. Smith all tie their heat exchanger warranty to documented annual maintenance. Our inspection report gives you a dated service record you can hand to the manufacturer if you ever file a claim. Skip the service and a warranty claim on a cracked exchanger can be denied outright.
Google ★★★★★4.9
Booked an annual inspection on our Rinnai after two years of neglect. The tech showed me the scale coming out during the flush and walked me through the combustion readings. Unit runs better than it has in a while. Fair price, no upsell.
Yelp ★★★★★4.8
Called on a Tuesday, had a tech out Thursday. Full descale, new inlet filter, and a written report with all the numbers. They also flagged a venting issue that another company missed. Highly recommend for tankless service in Dallas.
BBB ★★★★★4.9
We use them for our restaurant's two commercial tankless units. Annual contract with priority scheduling. They caught a failing flame sensor last visit before it shut us down. Worth every dollar for the peace of mind alone.
Google ★★★★★5.0
Same-day service when our unit died on a Sunday. Tech diagnosed a failed igniter, had the part on the van, and we had hot water back in under two hours. Professional, clean, and honest about pricing.
Our technicians work on tankless systems every day, not once a month. We hold a Texas State Board of Plumbing Examiners (TSBPE) license and carry NATE certification, plus manufacturer-specific training on Rinnai and Navien platforms. Gas work is handled by techs with EPA Section 608 certification. Every install and service we perform is done to Uniform Plumbing Code (UPC) and International Plumbing Code (IPC) standards, and we pull permits when the job requires it. That matters in Dallas, where venting and gas line sizing get inspected.
Real answers to the questions we hear most often from local homeowners and property managers.
If your inspection turns up a heat exchanger that is too far gone, we handle full replacement installs. We size the unit to your fixture count, run new gas and venting to code, and pull the permit. Most Dallas installs finish in one day.
View Tankless Water Heater InstallationWhen an inspection flags a failed igniter, flame sensor, or leaking valve, our repair techs fix it on the spot. We stock common parts for Rinnai, Navien, and Noritz so most repairs do not require a second visit.
View Tankless Water Heater RepairAnnual inspection is one part of a full maintenance plan. We also handle mid-year flushes, filter swaps, and venting checks for Dallas homes on hard water or with heavy use. Maintenance keeps the unit inside warranty spec.
View Tankless Water Heater MaintenanceUnits past 15 years or with a cracked heat exchanger usually cost more to repair than replace. We remove the old unit, dispose of it, and install a new one sized for your home, with all new isolation valves and venting.
View Tankless Water Heater ReplacementA tune-up is a lighter version of the annual inspection, focused on descaling and a quick function check. Good for units that were serviced recently but need a mid-cycle flush due to Dallas water hardness.
View Tankless Water Heater Tune-UpsThe core of any annual inspection. We circulate descaling solution through the heat exchanger with a pump and flush kit, then rinse until clear. This is what restores lost flow and stops scale from cooking onto the coil.
View Tankless Water Heater Flushing & DescalingCall (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.
Phone
(214) 817-0188Address
14205 Proton Rd, Dallas, TX 75244, Dallas, Texas
Hours
Mon–Fri: 7AM – 7PM
Sat: 8AM – 4PM
Sun: Emergency Only
24/7 Emergency Available
