Water Heater Repair & Installation in Alamo Heights, TX
Armor Pro Services repairs and installs water heaters in Alamo Heights, TX, for the pre-1970 09 homes inside Loop 410 where SAWS water at 15 to 20 grains per gallon scales tanks and heat exchangers fast. We diagnose the real fault on tank and tankless units, verify gas-line BTU capacity before quoting any tankless, and pull City of San Antonio permits under Texas RMP #36282. Call 210-212-7667 for same-day water heater service.
Water Heater Repair in Alamo Heights: What We Fix
Most water heater failures in Alamo Heights are repairs, not replacements, and the difference is money you keep. On gas tank units we replace failed thermocouples and gas control valves, relight and rebuild pilot assemblies, swap leaking temperature-and-pressure relief valves, change burnt elements and thermostats on electric units, flush the sediment that is killing recovery, and replace the anode rod before the tank corrodes from the inside out. On tankless units we clear flame-rod and ignition faults, descale clogged heat exchangers, replace flow sensors and igniters, and clear venting and combustion-air codes. We service Rinnai, Navien, Rheem, and A.O. Smith, which are the brands sitting in most 09 utility closets and garages. The repair-or-replace call starts with a real diagnosis, not a guess at the door, and we will not push a new unit when a common part gets you hot water the same day. Call 210-212-7667 and describe the symptom.
Water Heater Installation in Alamo Heights: The Gas Line Decides First
Here is the answer before the pitch: in a pre-1970 09 home, we verify the full gas-line BTU capacity before we quote any tankless installation, because a tankless can pull 150,000 to 199,000 BTU and a 1948 house was almost always piped for a 40,000-BTU tank. That single check is what separates an honest install from lukewarm water at two fixtures at once. When we size a gas tankless we design for a 70-degree temperature rise off roughly 55-degree San Antonio groundwater, which is the coldest the incoming water gets here, so the unit actually delivers its rated flow on a January morning. On a tank swap we set the new unit in the same location where we can, install a code-compliant expansion tank, a fresh T&P valve, and a drip pan, and haul the old heater away. We pull the City of San Antonio Development Services permit under Texas RMP #36282 and meet the inspector. If the gas branch will not feed a tankless and you do not want the meter and piping work, a high-efficiency tank or a hybrid is the honest recommendation, and we will say so.
Tankless Water Heater Repair in Alamo Heights: Scale and BTU-Starved Units
Tankless units show up in the renovated 09 homes and the newer infill builds, and inside Loop 410 they fail in two predictable ways. The first is scale. On SAWS water at 15 to 20 grains per gallon, every time the unit fires it bakes hardness onto the heat exchanger, and skipping the descale flush for two seasons sends it into short-cycling, then throttling, then an error code. Most Rinnai and Navien codes that send homeowners into a panic are scale-related or ignition-related and clear with service rather than replacement. We run a proper citric-acid flush, not vinegar, pull and clean the inlet screen, check the flow sensor, and verify combustion before we leave. The second is the one nobody warns you about: a tankless quietly starved for gas in an older home. When the previous installer never re-sized the branch, the unit modulates down under load and you get lukewarm water when two showers run at once. That is not a broken heater; that is a gas-line problem, and we measure the static and working pressure to prove it. Read us the code on the display when you call and we will load the right parts.
Conventional Tanks in 09 Homes: Sediment and the Year-Three Anode Rod
Plenty of Alamo Heights homes still run a conventional 40 or 50 gallon tank, and on SAWS water at 15 to 20 gpg those tanks take a beating from the bottom up. Mineral settles out of the hard water and collects on the tank floor, where it insulates the burner on a gas unit or bakes onto the lower element on an electric unit. The early signs are popping and rumbling sounds during heating, slower recovery between showers, and a unit that runs longer to hit the same temperature. A periodic flush clears the sediment and buys back recovery. The anode rod is the quieter failure, and it is the single most overlooked part in the 09 corridor. It is the sacrificial metal that corrodes so the steel tank does not, and on 15-to-20-gpg water it can be well spent by year three. Replacing the anode at year three is the cheapest thing you can do to push a tank from a 7-year life to 12 or more, and most homeowners here never touch it, which is exactly why so many Alamo Heights tanks die young. If a softener feeds the heater, the rod and the tank both last noticeably longer. On a younger unit a repair plus an anode swap often buys you years for very little. On a tank already 12 or 13 years old with a corroded anode, a weeping relief valve, and a floor full of sediment, we will be honest that replacement is the smarter money.
When Water Heater Repair Is the Wrong Call in Alamo Heights
We would rather lose the job than sell you work that will not hold, so here is when we tell 09 homeowners to stop repairing. If your tank is already past 12 years, the anode has never been touched, and the unit is weeping from the body of the tank itself, low and central where you cannot trace it to a fitting, the inner tank has rusted through and no patch fixes a perforated tank. Throwing a new element or a new gas valve at that tank is money down the drain, because the next leak is weeks away. And here is the one a competitor will not tell you: if your only symptom is a single failed part and the tank is under about 8 years old, do not let anyone talk you into a tankless upgrade you cannot fuel. We have walked into 09 homes where the last company quoted a tankless swap with no plan for the BTU shortfall. That is not an upgrade; it is a permanent hot-water problem you paid for. When the gas capacity is not there and you do not want the meter and piping work, the honest fix is repairing the tank you have or setting a high-efficiency tank in its place.
No Hot Water in Alamo Heights? A Two-Minute Check Before You Call
No hot water has a handful of common causes, and a couple you can check yourself in two minutes. On a gas tank unit, look at the pilot first. If the flame is out and will not relight, or lights and then dies a few seconds after you release the control knob, that points to a thermocouple or gas control valve, which is a repair, not a replacement. If you smell gas at any point, stop, leave the house, and call CPS Energy at 1-800-870-1760 before you call us. On an electric unit, check your breaker and the high-limit reset button on the upper thermostat; a tripped breaker that trips again immediately means a shorted element and needs a tech. On a tankless unit, the flashing error code tells the whole story, so read us the number. If the pilot holds, the breaker is on, and you still have no hot water, the heater needs hands on it. Call 210-212-7667 and we will bring the parts for the most likely fault.
How a Water Heater Job Works in Alamo Heights: Permit, Repair, and Close-Out
Here is the order of operations so you are not guessing. First, you call 210-212-7667 and describe the symptom or the plan: no hot water, a leak, a pilot that will not stay lit, a tankless error code, or a planned upgrade. We give you a real ETA, not a four-hour window, and 09 is inside Loop 410 so response times here are short. Second, the tech arrives stocked for the most common faults: thermocouples, gas valves, elements, thermostats, relief valves, anode rods, and a tankless flush kit. Third, the tech diagnoses the actual failure or verifies the gas-line BTU capacity for an install, then gives you a written, upfront price before any work starts. You approve it or you do not. Fourth, we make the repair or set the new unit, then test it: we confirm the unit fires or heats, the relief valve seats, and the output holds at the recommended 120 degrees. Where a changeout is required, we pull the City of San Antonio Development Services permit under Texas RMP #36282 and meet the inspector. Fifth, we clean up and confirm the warranty. Workmanship is backed for one year in writing, and parts follow the manufacturer's terms. For a planned tankless or tank replacement, use the form on this page and we will come back with a firm written number.
Frequently asked
Should I replace or repair my water heater in Alamo Heights?
If the repair runs more than about half the cost of a new unit, replace it. A heater old enough to need a costly part is usually close to needing another. Age decides it: a tank under 8 years with one failed element or thermostat is a repair; a 12-plus-year tank with a corroded anode, a leaking T&P valve, and a sediment-packed base is a replacement. In a pre-1970 09 home we also check the anode rod and the tank interior before recommending either way, so the call is based on the unit's actual condition, not a symptom guess. Call 210-212-7667 and we will tell you honestly which path you are on.
How much does a tankless water heater cost to run in a pre-1970 09 home?
Running cost is not the first question in an older Alamo Heights home. Gas capacity is. A tankless pulls 150,000 to 199,000 BTU, and a 1948 home piped for a 40,000-BTU tank frequently needs the gas branch re-sized or the meter verified before the unit can fire at its rated flow. If the line cannot feed it, the unit modulates down and you get lukewarm water at two fixtures at once, which erases any efficiency gain. We verify the full BTU run before we quote and size the unit for a 70-degree rise off roughly 55-degree San Antonio groundwater. On SAWS hard water we set it up for a periodic citric-acid descale so the heat exchanger stays efficient. When the gas capacity is not there, a high-efficiency tank is often the better-value call, and we will show you the math.
Do I need a City of San Antonio permit to replace my water heater?
A like-for-like repair generally does not require a permit, but a full water heater changeout does. We file the permit with the City of San Antonio Development Services Department under Texas RMP #36282, install with a code-compliant expansion tank, a fresh T&P valve, and a drip pan, and schedule and attend the inspection. You are not chasing paperwork; handling the permit and the inspection is part of the job. This matters more in the 09 corridor than people expect, because gas-line changes on an older home almost always ride along with a tankless conversion and those changes are inspected too.
Which water heater brands do you install and repair in Alamo Heights?
We install and service Rinnai, Navien, Rheem, and A.O. Smith, both tank and tankless, gas or electric, which covers most of the units we find in 09 utility closets and garages. On tankless units, most Rinnai and Navien error codes that look alarming are scale-related or ignition-related and clear with service rather than replacement on SAWS hard water. Read us the error code on the display when you call so we load the right parts. If your unit is still under manufacturer warranty, we file the claim paperwork so you are not arguing with a call center.
Why does my water heater keep failing early in Alamo Heights?
Two reasons stack in the 09 corridor. First, SAWS water runs 15 to 20 grains per gallon hard, and that scale drops out as sediment in the bottom of the tank that insulates the burner and corrodes the steel early. Second, the anode rod, the sacrificial metal that is supposed to corrode instead of the tank, is almost never replaced, and on water this hard it can be spent by year three. Once the anode is gone, the steel tank is next. Replacing the anode at year three is the single best move to push a tank from a 7-year life to 12 or more, and a softener feeding the heater extends both further. We can check and replace the rod on a normal service visit.
Can you get to me the same day in Alamo Heights for no hot water or a leak?
Often, yes. Alamo Heights is inside Loop 410, so it is close-in for us and response times here are short. No hot water and a leaking tank are urgent and we prioritize them. Calls placed by early afternoon on weekdays give you the best shot at a same-day slot. We give you a specific ETA when you call, not a vague window. Call 210-212-7667 and we will tell you honestly when we can reach you.