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Mariano Plumbing & Drains

Water Heater Installation

What should replace your current water heater?

A new water heater isn't one decision; it's several: tank or tankless, what capacity, which fuel, and where it can live. The right combination depends on your household's actual hot-water demand, not a default size.

Newly installed residential tank water heater

Whether replacement is likely

Signs it's time to replace, not repair

A leaking tank can't be repaired, only replaced. An older unit with repeated component failures is often at the point where repairs stop making sense. And a unit that can't keep up with demand may simply be the wrong size for the household.

Replacement is also worth considering when you want to move from tank to tankless, or upgrade to a more efficient unit that fits your fuel setup.

Professionally installed residential tank water heater in a clean utility area

The decisions

What shapes the installation

Tank water heater installation

Tank vs. tankless

Tank stores a set volume; tankless heats on demand. Each suits different demand patterns and homes.

Sizing a water heater to demand

Capacity / size

Sized to the household; too small runs out, too large wastes energy. Demand, not square footage, drives it.

Water heater fuel and gas connection

Fuel type

Gas, electric, or propane. What you have, and what's available at the unit, narrows the options.

Water heater placement and clearance

Placement & clearance

Where the unit can live, how much space it needs, and code clearances around it.

The process

What a typical replacement involves

  1. Assessing household hot water demand
    1Assess demand

    Match capacity and type to how your household actually uses hot water.

  2. Confirming fuel and clearances for installation
    2Confirm fuel & space

    Verify the fuel, venting, and clearances available at the install location.

  3. Removing old unit and installing new water heater
    3Remove & install

    Drain and remove the old unit, then set and connect the new one to code.

  4. Testing the new water heater installation
    4Test & verify

    Check for leaks, proper venting, and that hot water recovers as expected.

Considering tankless as the replacement?

If you're already replacing the unit, it's the natural moment to weigh tankless. Whether it fits depends on demand, fuel, venting, and placement, all worth checking before deciding.

See if tankless makes sense

Explore your replacement options

Tell us what you're replacing and how the household uses hot water. We'll help you weigh tank vs. tankless, capacity, and fuel, so the new unit actually fits.

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