Water Heater Replacement in San Antonio — Honest, Upfront Pricing
When the old tank gives out, you want a real installed price and a fast swap — not a sales pitch in your garage. We quote the full job over the phone and install most tanks the same day.
Hill Country Plumbing Pros handles water heater installation across San Antonio and the northeast suburbs — Schertz, Cibolo, Universal City, Converse, Live Oak, and out to New Braunfels and Seguin. A typical like-for-like swap of a 40 or 50-gallon gas or electric tank runs $1,400 to $3,300 fully installed, and that number includes the heater, haul-away of the old unit, new supply lines and pan, code-required upgrades, and the permit. If a quote you got elsewhere leaves any of that out, ask why.
Permits matter here: every metro city in our area requires one for a water heater install, and New Braunfels requires it even for a straight like-for-like swap. We pull the permit and schedule the inspection so the job is on record — which protects your home insurance claim if anything ever goes wrong. And because local water runs 14–15+ grains per gallon of hardness, we size and configure each new tank for hard-water conditions, and can pair the install with a softener so the new heater actually reaches its rated lifespan.
What’s Included
- New 40 or 50-gallon tank sized to your household — gas or electric
- Full installed price quoted before work starts, no truck-side upsell
- Permit filed with your city, inspection scheduled (required metro-wide)
- New supply lines, shutoff valve, drain pan, and T&P discharge line
- Code upgrades: expansion tank, seismic straps, venting corrections
- Haul-away and disposal of the old unit
- Manufacturer registration plus our labor warranty in writing
How It Works
- Phone quoteTell us the current tank size, fuel type, and where it sits — garage, closet, or attic — and we give you a real installed price range on the call.
- Same-day schedulingTrucks carry the most common 40 and 50-gallon gas and electric models, so a morning call usually means hot water again by dinner.
- Remove and installWe drain and haul off the old heater, set the new one with fresh connections, a pan, and any code-required upgrades, then pressure-test everything.
- Permit and walkthroughWe file the city permit, set the thermostat, show you the shutoff and maintenance basics, and leave the paperwork for your records.
What It Costs
For 2026 in the San Antonio metro, expect $1,400–$2,200 installed for a standard 40-gallon electric or gas tank and $1,800–$3,300 for a 50-gallon unit, higher-recovery model, or an install that needs venting or gas line corrections. Attic installs and closet conversions add labor; power-vent models add equipment cost.
Beware of teaser prices that quote the heater alone. By the time the expansion tank, pan, permit, and haul-away appear on the invoice, the "cheap" quote often exceeds ours. Our number is the out-the-door number — the cost guide linked below breaks down exactly where the money goes.
$1,400–$3,300 installed for most 40/50-gallon replacements
What moves the price
- Tank size and recovery rate (40 vs. 50 gallon, standard vs. high-recovery)
- Fuel type and venting — electric, atmospheric gas, or power-vent
- Location of the unit: garage swap vs. attic or interior closet
- Code upgrades your current setup is missing (expansion tank, straps, pan drain)
📘 Related guide: Water heater replacement cost guide
Water Heater Replacement FAQs
How fast can you replace my water heater?
Same day in most cases. Our trucks stock the common 40 and 50-gallon gas and electric models, so if you call in the morning, the old tank is usually out and the new one running before evening. Unusual sizes or power-vent units may take one extra day to source.
Do I really need a permit for a water heater swap?
Yes. San Antonio and every suburb we serve require a permit for water heater replacement, and New Braunfels requires one even when you are swapping like-for-like. An unpermitted install can void manufacturer warranties and complicate insurance claims — we handle the paperwork so you never have to think about it.
Should I go from a 40-gallon to a 50-gallon tank?
If you regularly run out of hot water — teenagers, back-to-back showers, a big soaker tub — the step up costs a few hundred dollars more and solves it. For one or two people, a properly working 40-gallon unit is plenty. We size based on how your household actually uses hot water, not on what earns the bigger ticket.
How long will a new tank last in San Antonio water?
Untreated, our 14–15+ grain hard water shortens tank life to roughly 8–10 years. With an annual flush and a healthy anode rod you can stretch that; add a water softener and 12–15 years is realistic. We check the anode at no charge if we are already out for other work.
Is it worth switching to tankless instead of another tank?
Sometimes. Tankless costs roughly twice as much installed but lasts about twice as long and frees up floor space. If your gas line and venting can support it, we will price both options side by side — see our tankless installation page for what that conversion involves.
Need water heater replacement today?
Call now — talk to a dispatcher, not a phone tree.