Tankless Hot Water Heater Installation Marietta-Alderwood

Honest sizing. No upsells. Lifetime service support.

Proper Sizing
Navien • Rinnai • Rheem
Lifetime Support
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PROPER SIZING
CODE COMPLIANT
WARRANTY SUPPORT
1,000+
HAPPY CUSTOMERS
5-STAR RATED
VETERAN OWNED

What Goes Into a Properly Sized Tankless Installation

Calculating Real Hot Water Demand

Peak demand during busiest morning hour — showers, dishwasher, clothes washer all considered.

Inlet Water Temperature in Marietta-Alderwood

We size for winter groundwater temperatures (as low as 40°F), not optimistic manufacturer ratings.

Brands We Install in Marietta-Alderwood

We recommend the right brand for your home — not the one with the highest margin.

Navien

Excellent cold-climate performance and recirculation options.

Rinnai

Known for long-term reliability and serviceability.

Rheem & Others

Electric and additional major brands available.

Tankless Hot Water Heater Installation in Marietta-Alderwood: What This Actually Costs

STANDARD INSTALL
$2,200–$3,400

Gas line and venting already adequate

WITH GAS UPGRADE
$3,000–$4,500
PREMIUM w/ RECIRCULATION
$4,500–$6,800

Tank install for comparison: $1,400–$2,200

Tank vs. Tankless — A Straight Comparison

Traditional Tank

  • Cheaper upfront
  • Simpler install
  • Standby energy loss
  • 8–12 year lifespan

Tankless

  • Endless hot water
  • Energy efficient
  • 18–22 year lifespan
  • Requires correct sizing

What Marietta-Alderwood Homeowners Have Said

"They talked me out of the bigger unit I thought I wanted and installed the right-sized one for half the price."

— Steven Marquez, Marietta-Alderwood

"The install required a gas line upgrade... No surprises. The unit is excellent."

— Karen Sutherland, Marietta-Alderwood Metro

"Reliable spent forty minutes on the assessment... The lower bids would have left me with the same problem."

— Daniel Voorhees, Marietta-Alderwood

Frequently Asked Questions

How long does tankless installation take?

A straightforward replacement in Marietta-Alderwood runs 6 to 8 hours. Installs requiring gas line or venting upgrades can extend to a full day or a day and a half.

Will I save money with tankless?

Most households in Marietta-Alderwood Metro see 15% to 30% reduction in water heating costs.

Does a tankless unit need annual maintenance?

Yes. Annual descaling is essential for performance and warranty validity.

What's the lifespan of a properly installed tankless unit?

18 to 22 years with annual maintenance.

Schedule an Honest Tankless Assessment in Marietta-Alderwood

You shouldn't pay for the wrong unit. Get clarity before committing.

Click Here to Call (888) 466-2103
Click Here to Call (888) 466-2103

Our Other Plumbing Services in Marietta-Alderwood, WA

Drain Cleaning Near MeEmergency PlumberLeak Detection CompanyTankless Hot Water Heater Installation

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