Water heater repair in Houston

Diagnose first.
Sell never.

1,400+ five-star reviews and over 20 years of repair expertise.

Fast, reliable repair for tank and tankless systems, gas or electric, all brands. Our licensed technicians test each component before recommending anything, use OEM parts and finish most repairs in a single visit.

Rheem Professional Classic electric tank water heater, front view
Rheem Professional Classic series

Expert technicians.

Licensed and factory-trained, with brand-specific diagnostic tools for error codes and safety testing for gas and electric components.

Comprehensive repairs.

Every type of tank repair, gas or electric, plus tankless work: leaks, burners, gas valves, expansion tanks, flow sensors and descaling.

Fast response.

Our trucks carry the most common OEM parts for every major brand, so most repairs are finished in a single visit. Saturday appointments run 9 a.m. to 4 p.m.

If a repair will hold, we’ll say so.

Too many companies run a “diagnose and condemn” model, where every service call ends in a replacement pitch. We test each component on its own first. If a $200 repair gives you another 3 to 5 years of reliable hot water, that is what we’ll recommend. We never push unnecessary replacements.

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Illustration of four Hot Water Guys technicians in uniform, one holding a tankless water heater and another a pipe wrench

Tell us what changed.

Cold showers, leaks that risk water damage, pilot light failures, or strange noises from sediment buildup or a failing internal component. Houston’s hard water speeds up sediment buildup, corrodes internal components and shortens the life of the system.

We find the failed part.

Every service call starts with a full diagnostic, so you know exactly what failed and what it costs to fix before any work starts. On tankless units, brand-specific tools pinpoint the failure without guesswork.

You see both options.

When repair and replacement are both on the table, we walk you through each with real numbers. A new tank installation runs $2,500 to $4,500, and a tankless conversion runs $4,200 to $8,000.

The repairs we handle most.

We handle every type of tank water heater repair, on gas and electric units from all major manufacturers, along with the full range of tankless repairs. These are the ones we see most often.

Leaks.

Leaks can come from corroded tanks, loose fittings or a failing pressure relief valve. We find the source and tell you whether repair or replacement is the right call. If water is pooling around the base, don’t wait: in Houston’s humidity, a small leak can quickly lead to mold growth and structural damage.

Error codes.

Modern tankless and high-efficiency tank systems display error codes when something fails. We read and resolve codes on Rinnai, Navien, Noritz and Rheem systems, with diagnostic tools specific to each brand, so we pinpoint the exact failure.

Burner cleaning.

Dust, debris and combustion residue reduce burner efficiency and can cause ignition failures. We clean and inspect the burner assembly to restore safe, consistent heating. Regular cleaning matters more in Houston, where dust and humidity speed up the buildup.

Heat exchanger descaling.

Scale inside a tankless heat exchanger restricts water flow and reduces efficiency. Because of our hard water, it’s one of the most common tankless repairs in Houston. We descale the exchanger and test the flow rate to confirm full performance.

Flow sensors.

A faulty flow sensor stops a tankless unit from detecting water demand, so the unit shuts down. We replace sensors with OEM parts and verify proper operation before we leave.

Gas valves.

A failed gas valve stops the burner from igniting. We test and replace gas valves to restore safe operation. The repair needs a licensed technician and proper safety testing, and we provide both on every call.

Expansion tanks.

An expansion tank absorbs pressure changes in a closed-loop system. When it fails, your pressure relief valve may discharge again and again. We test, repair or replace expansion tanks to restore proper system pressure.

Tankless repairs.

Tankless systems are efficient and long-lasting, but they aren’t maintenance-free. Error codes, ignition failures and mineral buildup in the heat exchanger are the most common reasons Houston homeowners call for tankless repair. If your unit shows a fault code or the hot water cuts out mid-shower, you need a technician who understands the electronics and components of your brand. Our team is trained on Rinnai, Navien, Noritz and Rheem tankless systems and carries common parts on every truck. Our tankless repair page covers brand-specific diagnostics and pricing.

Commercial water heaters.

Restaurants, apartment complexes, hotels and office buildings rely on water heaters that run at higher capacities and need faster recovery than residential units. When one goes down, every hour without hot water costs money. We repair high-capacity tank systems, commercial tankless banks and hybrid setups, with priority scheduling for business accounts. Our technicians understand commercial code compliance, venting configurations and gas line sizing. Call 832-673-0909 to schedule a commercial water heater inspection or repair.

Flushing.

A flush removes the mineral sediment Houston’s hard water leaves inside the tank or heat exchanger. In a tank, sediment settles at the bottom and insulates the water from the burner, so the unit works harder and wears out sooner. In a tankless unit, scale reduces the flow rate and triggers error codes. We recommend a full flush at least once a year for tanks and a descaling flush every 12 to 18 months for tankless units. Regular flushing prevents costly repairs and can extend the life of your system by several years. Ask about adding a flush to your repair visit to save on service costs, or see our tankless maintenance service for an ongoing plan.

Where we work.

We dispatch licensed technicians across Harris, Fort Bend, Montgomery, Galveston, Brazoria, Waller and Liberty Counties. That covers Houston proper, from the Heights and Montrose to Memorial, Meyerland and Clear Lake, plus Sugar Land, Katy, Cypress, Tomball, Spring, Conroe and the surrounding communities.

REPAIR PRICING

Free estimate, full diagnostic

You know what failed and what the fix costs before any work begins.

What a repair
costs in Houston.

Most water heater repairs in Houston run $165 to $1,200, depending on the system and the component that failed. Simple fixes like a thermocouple replacement typically run $100 to $200. On tankless units, flame rod cleaning runs $100 to $175, heat exchanger descaling $195 to $250, ignition and gas valve repairs $200 to $450 and control board replacement $300 to $600.

If the numbers point toward replacement, we’ll show you that math too: a new tank installation runs $2,500 to $4,500, and a tankless conversion $4,200 to $8,000. Call 832-673-0909, describe what your water heater is doing, and we’ll give you an honest estimate over the phone.

Diagnosis first.
Then a price.

Four steps from the first look to a tested repair, with no surprise charges along the way.

01

Assessment and diagnosis.

We test each component individually to find exactly what failed, on gas or electric, tank or tankless.

02

Transparent upfront quote.

You see what’s wrong and what the fix costs before any work starts, with repair and replacement numbers when both apply.

03

Precise repair.

Genuine OEM parts, fitted by a licensed technician, with safety testing for gas and electric components.

04

Testing and follow-up.

We verify the system operates properly before we leave, and follow-up support comes with the repair.

Every major brand,
tank and tankless.

We repair Rinnai, Navien, Noritz, Rheem, A.O. Smith, Bradford White and State water heaters, gas and electric, and we also service discontinued brands and ones with hard-to-find parts. Our technicians are factory-trained and carry OEM replacement parts.

If your Rinnai tankless is throwing an error code or your Navien has a flow sensor failure, we have the brand-specific diagnostic tools to find and fix it. With an older A.O. Smith or Bradford White tank, we’ll help you decide whether a repair or an upgrade makes more financial sense.

Repair or replace?
Here’s our rule.

If your tank is under 8 years old and the repair costs less than half the price of a new installation, we’ll fix it. If the tank itself is leaking, the unit is over 10 years old with repeated failures or the hot water runs rust-colored, replacement is usually the better investment.

Either way, you get both options with real numbers and upfront pricing, and you make the call. If replacement is the right path, we install tank water heaters and can help you decide whether a tankless system would suit your household better. Our guides to tankless vent installation and the cost of replacing a gas water heater with tankless cover the details.

Serving Greater Houston.

Confirm the service address and project with the team. Some areas are subject to an additional travel fee.

Questions before you call.

How much does water heater repair cost in Houston?

Most water heater repairs in Houston cost $165 to $1,200, depending on the type of system and the component that failed. Simple fixes like a thermocouple replacement run $100 to $200, while bigger repairs like a gas valve or heat exchanger replacement cost more. We give you a free estimate before any work starts.

What are the signs you need water heater repair?

No hot water, inconsistent temperature, water that takes too long to heat, discolored or rusty hot water, unusual sounds like popping or rumbling, visible leaks and error codes on the display panel. If you notice any of these, schedule a diagnostic before the problem gets worse.

Do you offer water heater repair near me?

Yes. We repair water heaters across Houston and nearby areas, including Sugar Land, Katy, Tomball, Spring, Cypress and Conroe. Call 832-673-0909 to book the next available appointment.

How often should you flush a water heater in Houston?

Flush a tank water heater at least once a year in Houston, because our hard water builds up sediment faster than in other regions. For tankless systems, a descaling flush every 12 to 18 months keeps the heat exchanger clean and prevents error codes.

Should you repair or replace your water heater?

Repair it if it’s under 8 years old and the repair costs less than 50% of a new installation. Replace it if the tank is leaking, the unit is over 10 years old with repeated failures or the hot tap runs rust-colored. We give you both options with upfront pricing, so you can decide.

What brands of water heaters do you repair in Houston?

All major brands, including Rinnai, Navien, Noritz, Rheem, A.O. Smith, Bradford White and State. Our technicians carry OEM parts and use brand-specific diagnostic tools for accurate repairs.

Do you repair tankless water heaters in Houston?

Yes, for all major brands. Common tankless repairs include error code diagnostics, heat exchanger descaling, flow sensor replacement, gas valve repair and ignition system service. Our tankless water heater repair page has more detail.

How do you schedule water heater repairs?

We’re an appointment-based service. When you call 832-673-0909 or send the form on our contact page, we book the next available slot that fits your schedule. We confirm the appointment, show up on time and do the work right the first time.

Are you open on Saturdays for water heater repair?

Yes. We schedule repair appointments Monday through Friday during standard business hours and on Saturdays from 9 a.m. to 4 p.m. Saturday slots fill up first, so book early.

How much does a water heater service call cost?

You get a transparent upfront quote before any work begins. Every repair starts with a thorough diagnostic, so you know exactly what’s wrong and what it will cost to fix. No surprise charges and no “diagnose and condemn” upselling. If a $200 repair gives your system another 3 to 5 years, that’s what we’ll tell you.

Worth fixing?
We test it first.

Tell us what it’s doing, from cold showers to a leak or a strange noise. The estimate is free, and you see the price before any work starts.

Call the guysGet a free quote