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Straight pricing
Tank installs run $2,500–$4,500, tankless $4,200–$8,000. You hear the number before we start, and we honor it.
Licensed & Insured
20+ Years in Houston
Houston’s Trusted Water Heater Experts
Tank, tankless, repair and maintenance. Same-day service across eight Greater Houston counties, with the price agreed before we start.
4.9 · 1,400+ Google Reviews
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Brands we install & service
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Licensed pros
Hot water, done right the first time.
- Reviews
- 1,400+
- Five-star reviews
- Experience
- 20+
- Years in business
- Coverage
- 8
- Counties served
Why Hot Water Guys
Straight answers, clean work, no surprises.
Water heater failures are stressful enough. We give you the number over the phone, pull the City of Houston permit, and leave the space cleaner than we found it. Twenty-plus years of doing one thing well.
Get a Free QuoteLicensed & permitted
Houston requires a permit and inspection on every replacement. We pull it, schedule it, and meet the inspector.
In and out fast
Most tank replacements take 2–4 hours. A tankless conversion runs 6–8 because it needs new gas and venting.
Clean workmanship
Floors protected, the old unit hauled away, and a full walkthrough of the new system before we leave.
Our services
Tank, tankless, repair and maintenance for every Houston home.
Tankless Installation
Endless hot water from Rinnai, Navien, Rheem and more, sized to your household's real flow rate. Installs from $4,200.
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Tank Replacement & Installation
Gas and electric tank replacements, most finished in 2–4 hours. Permit pulled, old unit hauled away.
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Water Heater Repair
Leaks, no hot water, error codes and temperature swings on tank or tankless. Trucks stocked to fix it in one visit.
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Tankless Maintenance
Annual descale, filter cleaning and heat-exchanger inspection to protect the warranty against Houston's hard water.
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Commercial Tankless
Cascading tankless systems for restaurants, salons and multi-unit properties, installed to minimize downtime.
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Whole-House Water Filtration
Cut the scale that kills water heaters. Filtration and softening systems installed for the whole home.
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How long does a water heater install take?
Tank replacement is 2–4 hours. A tankless conversion runs 6–8 hours because it needs new gas and venting.
Do I need a permit in Houston?
Yes. The City of Houston requires a plumbing permit and a post-installation inspection on every replacement. We pull the permit and meet the inspector.
Which heater suits a large home?
For three or more bathrooms running at once, a properly sized tankless unit, or two in tandem, keeps up where a 50-gallon tank won't.
Reviews
Homeowners call us for a clean, clear job.
“They kept me informed at every step and didn't cut a single corner. Tankless conversion done in one visit.”
“The price they quoted over the phone was the price I paid, even though the job ran long. That's rare.”
“On time, diagnosed it fast, and never tried to upsell me. Hot water back the same afternoon.”
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Service area
We cover Greater Houston
- Harris
- Fort Bend
- Montgomery
- Galveston
- Brazoria
- Liberty
- Waller
- Chambers
- Houston
- Spring
- Cypress
- Tomball
- Jersey Village
- Bellaire
- The Woodlands
- Katy
- Sugar Land
- Richmond
- Missouri City
- Fort Bend County
- Conroe
- Magnolia
- Montgomery
- Willis
- Splendora
- Cleveland
- Galveston
- Brazoria
- Waller
- Brookshire
- Liberty
Inside the eight counties but don't see your city? Call 832-673-0909 and we'll confirm coverage before you book. Some areas carry a travel fee.
How it works
Three steps to hot water.
Most providers won't quote until they're standing in your garage. We give you a real number on the first call.
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Call for an estimate
Tell us about your current system and your hot water needs. We give you an estimate over the phone, a convenience few providers offer.
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We visit and size the job
A pricing specialist stops by at a time that suits you, checks gas, venting and flow, and hands you a final written quote.
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We install
Old unit removed, new heater set and permitted, full system walkthrough. Then you enjoy endless hot water and a lower energy bill.
From the blog
Water heater advice, minus the sales pitch.
Read more
How long does tankless water heater installation take?
What a same-day conversion actually involves, from gas line and venting to the first hot shower.
Read more
Do I need a permit for water heater replacement in Houston?
What the City requires, what the inspection covers, and why we handle both for you.
No hot water? We can be there today.
Mon–Fri 8:00–5:30 · Sat 9:00–4:00 · Over-the-phone estimates