Water heater service in Marietta, GeorgiaTank & tankless · Repair & replacement
R.S. AndrewsMarietta water heater servicesTalk to the service team770-816-8116
R.S. Andrews · Marietta, Georgia

Tankless hot water.
Thoughtfully sized.

Explore on-demand water heating, or get help with a tankless system that is showing faults or inconsistent performance.

R.S. Andrews service van parked on a tree-lined residential streetSmiley, the R.S. Andrews plumbing mascot

On-demand heating starts with the right fit.

A tankless heater heats water as it flows through the equipment. It can reduce the space needed for hot-water storage, but performance depends on proper sizing and the home’s installation conditions.

Start with the fixtures that are likely to run together. Multiple showers and appliances can exceed the output of a system that was chosen without considering peak demand. Incoming water temperature also affects how much heating the unit must provide.

Think beyond the wall space.

A conversion is more than swapping a large tank for a small box. The selected equipment must fit the available fuel or electrical supply, the manufacturer’s installation requirements and the existing plumbing. A gas model and an electric model have different utility needs.

Ask for the full proposed scope before deciding. Utility upgrades or changes to piping, drainage or venting can affect whether tankless is practical. Compare the complete project with a tank replacement for your Marietta home.

Service for an existing tankless heater.

If your unit displays a fault, stops heating or changes temperature unexpectedly, describe the issue to the service team. Include the code exactly as shown and whether the problem appears during a particular combination of fixtures.

An assessment should consider the equipment and its installation conditions. Mineral accumulation, flow or component issues can affect performance, but symptoms alone do not prove the cause. Avoid repeated resets or untrained adjustments to gas or electrical components.

Maintenance belongs in the plan.

A tankless unit still needs attention. Inspection and scale control should follow the manufacturer’s guidance and reflect actual water conditions and usage. Maintenance is part of owning the equipment, not an optional detail to remember only after a fault.

Ask what service your model needs and keep a record of work completed. The maintenance page explains useful questions for the next visit.

Your questions, answered

Before you book.

Does tankless mean unlimited hot water at every fixture?

A correctly selected unit can heat water continuously within its rated capacity. That does not mean it can supply any number of fixtures at once. Peak flow, incoming temperature and installation conditions must be considered.

Are electric and gas tankless heaters interchangeable?

No. Their utility requirements differ, and the installation must suit the specific equipment. A qualified assessment should confirm whether the home can support the proposed unit and identify any required changes.

Can R.S. Andrews service an existing tankless unit?

R.S. Andrews lists tankless repair and maintenance among its water-heater services. Provide the brand, model if known, displayed error and symptoms when you request service so the team can discuss your equipment.

Does a tankless heater need maintenance?

Yes. Inspection and scale-control needs depend on the model, water conditions and use. Follow the manufacturer’s instructions and discuss an appropriate service interval rather than assuming every installation needs the same schedule.

Is tankless always cheaper to operate?

Operating cost depends on equipment efficiency, fuel prices, household use and installation. Compare expected operation and total installed cost for the options available to your home. Do not choose solely on a general savings claim.

Ready for dependable hot water?

Tell us what is happening with your water heater. R.S. Andrews can help you arrange the next step.

Call 770-816-8116
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