Overview
A tankless heater fires only when a tap opens, heating water as it passes through. That saves the standby energy a tank burns all day, and the unit hangs on a wall instead of sitting on the floor. The catch is demand: while running, it needs much more gas than a tank, so the supply line and meter have to keep up.
Sizing is based on how much hot water your home uses at once, and how cold the incoming water is in winter. We also plan the vent route, a condensate drain for high-efficiency models, and service valves so the heat exchanger can be descaled without cutting pipe. Our hard water makes that maintenance important.
How we handle it
Plan the load
Fixtures in use at once and winter inlet temperature.
Upgrade supply
Gas line sized for full demand, vent and condensate routed.
Install and set
Service valves added, unit set and every tap tested.
What it costs
The unit is only part of the cost. A gas line upgrade, new venting and a condensate drain often make up a large share. Replacing tankless with tankless costs much less than converting from a tank. We price each piece separately.
Good to know
- Ask for a unit with isolation valves so descaling takes minutes.
- Pair the unit with a softener to protect the heat exchanger.
- Expect a few seconds' delay at the tap; that is normal while the burner fires.
Larger two-story homes in Alamo Ranch and Westover Hills often have long runs to the far bathroom. A tankless unit paired with a recirculation setup can cut the wait for hot water dramatically.
Tankless water heater installation questions
Is tankless worth it?
It pays off best for big families and anyone short on space. You spend more on day one and typically get many more years out of the unit.
Does it need maintenance?
Plan on descaling roughly once a year with our water.
Can you convert my tank to tankless?
Yes, including the gas, venting and electrical changes it needs.
Will a tankless unit fix my slow hot water at the far bathroom?
Not by itself. Distance is the issue. A recirculation pump or a second point-of-use unit solves that.