Can you install a tankless water heater in place of a tank unit?

Yes — a tankless water heater can usually be installed in place of a traditional tank unit, but a few requirements need to be checked first.

What may be needed for the conversion:

Gas models: Often require a larger gas line, upgraded venting, and proper combustion air.
Electric models: May need additional breakers and higher electrical capacity.
Plumbing updates: New water connections and a condensate drain (for condensing units).
Local code compliance: Permits and inspections may be required.

What to expect:

Installation typically takes longer than a standard tank replacement due to upgrades.
You’ll gain endless hot water, improved energy efficiency, and longer equipment lifespan.

A professional assessment ensures your home’s utilities can support the unit and helps select the right size for your hot-water demand.

See what they are talking about?

"I woke up to a cold shower and called SOS Water Heater Plano TX in a panic. They arrived the same morning, diagnosed the problem quickly, and had my water heater running again in no time. Excellent service and very fair pricing. Highly recommend!"

Jennifer L.

"My water heater was leaking and I feared the worst. SOS Water Heater Plano TX provided a prompt inspection and explained my options clearly. They repaired it the same day and saved me from a costly replacement. Professional and courteous throughout."

David M.

"Fantastic experience with SOS Water Heater Plano TX! they were so knowledgeable and honest about what needed to be fixed. The repair was completed quickly and my hot water has been perfect ever since. I appreciate their reliability and integrity."

Can you install a tankless water heater in place of a tank unit?

See what they are talking about?

Jennifer L.

David M.

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