Hot water on demand, a smaller footprint, and no tank to leak. We install and repair tankless water heaters the right way.
A tankless water heater heats water as you use it instead of keeping a large tank hot all day. That means a steady supply of hot water for back-to-back showers, a smaller unit mounted on the wall, and no big tank to rupture and flood the garage. MC 1 Plumbing installs and repairs tankless water heaters throughout Greater San Antonio.
A tankless installation is more involved than swapping a tank. Gas tankless units often need a larger gas line than a standard tank heater, along with proper venting and combustion air. We size the unit to your household's hot water demand and make sure the gas supply, venting, and water connections are all correct.
For existing tankless units, we diagnose error codes, inconsistent temperatures, and units that won't fire, and we perform the descaling maintenance that San Antonio's hard water demands. Every job is backed by a licensed Texas Responsible Master Plumber (RMP M-43246) with 30 years of experience.
For many households, tankless is a smart long-term upgrade.
Hot water as long as you need it, one shower after another.
A compact, wall-mounted unit frees up floor space.
No large tank that can rupture and flood your home.
Error codes, cold bursts, and ignition problems diagnosed and fixed.
Most tankless problems trace back to installation or maintenance. An undersized gas line can starve the unit when demand is high. Improper venting creates safety concerns. And a unit that's too small for the household will struggle when multiple fixtures run at once.
San Antonio's hard water is especially hard on tankless heaters. Minerals build up inside the heat exchanger, reducing efficiency and triggering error codes. Regular descaling, often once a year in hard water areas, helps a tankless unit perform well and last longer. A water softener upstream can reduce buildup significantly.
If you're replacing a tank water heater with tankless, we'll evaluate your gas line, venting, and water connections first, and explain exactly what the conversion involves.
Every tankless job covers the unit and everything it depends on.
It depends on your hot water use, your gas or electric service, and your budget. We'll look at your home and give you an honest recommendation.
Hard water leaves mineral buildup in the heat exchanger. Descaling removes it so the unit runs efficiently and avoids error codes.
Yes. A conversion may involve upgrading the gas line, venting, and water connections, and we'll explain everything before we start.
Yes. We diagnose error codes, ignition failures, and inconsistent temperatures on tankless units.
A properly sized unit provides continuous hot water, but it has a flow limit. Sizing it correctly for your household is key.
From your first call to endless hot water, here's what to expect.
Call or text 210-500-9085 about installation or repair.
We check your hot water demand, gas line, and venting.
We install or repair the unit with proper connections.
We test hot water, gas, and venting and walk you through care.
“Hidden gem in San Antonio. Besides the fact they are responsive, they provide context to the work they do.”
Jeremiah A. — Google Review ★ 4.8 · 19 Google Reviews — Read Our Reviews →Call or text Daniel today • Veteran-Owned • License RMP M-43246 • Serving Greater San Antonio