Know When It's Time
Some water heater problems are worth fixing. Others are the tank telling you it's done. Here's how to tell the difference before you spend money on a repair that won't hold.
We'll ask about your current unit's age, fuel type, and what's prompting the replacement. If you're considering tankless, we'll ask about your gas line and electrical setup so we come prepared to give you real numbers.
We inspect your existing setup, confirm the right size and type for your household, and give you clear pricing for tank and tankless options side by side. You choose, and we install the same day whenever the parts are on hand.
We remove the old unit, test the new one under real use, and confirm the temperature and pressure are both correct. We'll also walk you through anything the new unit needs going forward, like its first maintenance interval.
Full-Service Replacement
A replacement is more than swapping one box for another. We size the new unit to your fixture count and usage, explain the tradeoffs between tank and tankless honestly, and handle the old unit's removal so you're not left dealing with it.
We size every replacement to your household's real usage, not a generic chart. If the new unit isn't keeping up the way it should, call us and we'll make it right.
You'll see itemized pricing for every option before we install anything. The number you approve is the number on your invoice.
A lot of water heater replacements happen in a panic, right after the old one floods a closet. That's the worst time to think through tank versus tankless, because you're focused on getting hot water back today, not on what makes sense for the next fifteen years.
If your tank is already showing its age, this is worth thinking through before it fails completely. A planned replacement gives you time to compare options instead of accepting whatever's fastest to install.
A tank replacement is the simpler path: similar size, similar connections, lower upfront cost. It's the right call if you're not planning to stay in the home long term, or if your gas line and venting aren't set up for a tankless conversion without extra work.
A tankless unit costs more upfront, but it takes up a fraction of the space, never runs out of hot water mid-shower, and typically lasts longer than a tank. For a household that's outgrown its current tank's recovery rate, that tradeoff often pays for itself within a few years.
Did you know that approximately 9-13% of our service calls are to come out to fix other companies' mistakes?
From Downtown to the Suburbs
From older homes near downtown with original plumbing to new construction in the suburbs, PlumbSmart has replaced tank and tankless units across San Antonio and knows what each type of home needs.
Diane Mcelroy
Recent Google review
I am having a weird issue with intermittent dampness in my garage. Roger spent about 1.5 hours trying to locate the problem. He assured me it was not a plumbing problem and told me not to worry about the service call.
Andrew Schaffrinna
Recent Google review
Joey was extremely knowledgeable and friendly. Excellent service, excellent advice, went above and beyond by providing me with recommendations on how to prevent future issues. Highly recommend.
Kristi Lopez
Recent Google review
So happy with our new system! The team was absolutely fantastic! Thank you!
Svetla McPhie
Recent Google review
PlumbSmart was the only plumbing company that responded the same day to fix a leak. Excellent work and coordination. All over great team.
Plumbing disasters don't wait for business hours. Our expert team is ready to roll at any moment's notice, day or night, to handle your emergencies.
Age is the clearest signal. A standard tank water heater lasts 8 to 12 years, and once you're in that range, a major repair often costs more over time than replacing the unit outright. If the tank body itself is leaking or rusted, replacement is the only real option regardless of age.
It depends on your household's hot water demand, your budget, and how long you plan to stay in the home. A tank costs less upfront and is a straightforward swap. Tankless costs more to install but uses less energy over time and delivers hot water on demand. We'll walk through both with real numbers for your situation.
A standard tank-to-tank swap is usually finished in a few hours. Switching to tankless, or replacing a unit that needs updated venting or electrical work, can take longer. We'll give you a realistic timeline once we've seen your setup.
Sizing depends on the number of bathrooms, your household size, and peak hot water demand, like running a shower and the dishwasher at the same time. An undersized replacement will leave you frustrated within the first week, so we size it to how your home actually uses hot water, not just a generic chart.
Yes. Removal and disposal of the old unit is part of a standard replacement. You don't need to arrange separate haul-away service or deal with the old tank yourself.
Did you know that approximately 9-13% of our service calls are to come out to fix other companies' mistakes?
From the Blog
Practical tips and local insights from the PlumbSmart team.
1233 Safari St, San Antonio, TX 78216
(210) 810-0810Available 24 hours, 7 days a week.
Replacement conversations usually start with one of two triggers: the old tank finally failed, or it's still limping along but the repairs have started adding up. Either way, the goal is the same: get you a unit that fits how your household actually uses hot water, not just whatever matches the old one's dimensions.
We'll ask about your bathroom count, whether you run the dishwasher and a shower at the same time, and how long you plan to stay in the home. Those answers matter more than the brand name on the old unit.
PlumbSmart handles the full swap, old unit out, new one set, tested, and code compliant, so you're not stuck figuring out disposal or scheduling a second visit for a permit inspection.