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Charlotte metro · NC & SC

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SteadWell Plumbing

Water heaters

Tankless water heaters

A tankless water heater heats water on demand instead of storing it. It suits households that want endless hot water and lower standby losses, but it may need a larger gas line, new venting or electrical upgrades, and yearly descaling.

  • Cause diagnosed first
  • Written price before work
  • Permits pulled where required
  • Clean-up included
Technician preparing equipment for a repair

Tankless units are sized by flow rate (gallons per minute) and temperature rise, not tank capacity. Undersize one and two showers at once turn lukewarm.

We check your gas meter and line size, venting route and electrical before quoting, because those are what make a tankless install simple or complicated.

Tankless Water Heaters at a glance

What it is
A tankless water heater heats water on demand instead of storing it.
Service category
Water heaters
Where
19 towns across the Charlotte metro (NC and York County, SC)
Urgent service
Scheduled service — call if water is actively leaking.
Pricing
Written price after diagnosis, before any work starts.

Signs you need tankless water heater help

  • Error codes on the unit display
  • Water fluctuates between hot and cold
  • Unit shuts off during use
  • Hasn't been descaled in over a year

The visit

What the visit involves

  1. 1

    Load calculation

    Peak simultaneous use and incoming water temperature.

  2. 2

    Utility check

    Gas line sizing, venting path, condensate drain, electrical.

  3. 3

    Install or service

    Installation to manufacturer specs and code, or diagnosis and descaling for existing units.

What affects the cost

We don't publish flat prices for work that depends on what we find. These are the things that move the number — you'll get a written price before any work starts.

  • Gas line upsizing
  • Venting route
  • Indoor vs. outdoor unit
  • Electrical work for electric models
  • Condensate drain

Tankless Water Heaters: common questions

Tank vs. tankless: which is better?

Tankless gives continuous hot water and takes less space, but costs more upfront and needs yearly maintenance. A tank is cheaper to install and simpler. The right answer depends on usage, fuel and install location.

Why does my tankless water heater run out of hot water?

A tankless unit doesn't run out, but it can be undersized for the number of fixtures running at once, so water turns lukewarm. Scale buildup and clogged inlet filters also reduce output.

How often does a tankless water heater need maintenance?

Most manufacturers recommend descaling once a year, plus cleaning the inlet water filter. Harder water may need more frequent service.

Are tankless water heaters worth it?

They're worth it when a household regularly runs out of hot water, wants to free up space, or plans to stay long enough for lower standby energy use to offset the higher installed cost.

Service area

Tankless Water Heaters across the Charlotte metro

Get help with a tankless water heater

Call for current availability — urgent leaks and backups are prioritized.

CallRequest service