Water Heater Services in Mukilteo

Repair, replacement, and tankless installation — from your neighbors

No hot water? Call 425-374-3909 — we’re already in town.


Your Mukilteo Water Heater Experts

Need water heater service in Mukilteo? You’re calling home base. Stollwerck Plumbing & Sewer is headquartered right here in Mukilteo — we’ve been repairing and replacing water heaters in town for over 50 years.

Whether your tank water heater is leaking, your tankless unit is making noise, or you’re ready to upgrade to endless hot water, we handle it all. Every job is backed by our 1-year guarantee.

Water heater services we offer:

  • Tank water heater repair
  • Tank water heater replacement
  • Tankless water heater installation
  • Tankless service and descaling
  • Hybrid/heat pump water heater installation
  • Expansion tank replacement

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Common Water Heater Issues in Mukilteo Homes

Harbour Pointe and Newer Construction

Homes built in the 1980s and later typically have reliable plumbing, but water heaters from that era are now 25–40 years old — way past their expected lifespan. If your Harbour Pointe home has the original water heater, replacement is overdue. These newer homes are great candidates for tankless retrofits — the plumbing can typically handle the upgrade without major modifications.

Old Town and Waterfront Homes

Mukilteo’s oldest neighborhoods have homes from the 1940s–1960s. Water heater installations in these homes sometimes need code updates: proper venting, seismic straps, expansion tanks, or upgraded gas lines for tankless units. We handle all of it.

Vacation Properties and Rental Units

Own a rental property in Mukilteo? Our commercial license means we can work on rental units — same crew, same quality. For properties that sit empty part of the year, we recommend tankless water heaters — they handle intermittent use better than tank units.


Tank vs. Tankless: Which Is Right for Your Mukilteo Home?

Tank Water Heaters

  • Lower upfront cost ($1,200–$2,000 installed)
  • Simpler installation in existing setups
  • 10–12 year lifespan with proper maintenance
  • Good for most households

Tankless Water Heaters

  • Endless hot water — never run out
  • 15–20+ year lifespan
  • Smaller footprint (wall-mounted)
  • Higher upfront cost ($3,000–$5,000+)
  • Best for larger households or high-demand use

For most Mukilteo homes, either option works well. If you have a large family, multiple bathrooms running simultaneously, or you just hate running out of hot water, tankless is worth considering. We’ll help you decide.

Learn more about tankless water heaters →


Water Heater FAQs — Mukilteo

How quickly can you get to a water heater emergency in Mukilteo?

Fast — we’re already here. Mukilteo is our home base. Call 425-374-3909 and we’ll prioritize your call.

How much does water heater replacement cost in Mukilteo?

Tank water heater replacement typically runs $1,200–$2,000 installed. Tankless installations are $3,000–$5,000+ depending on whether gas line or venting upgrades are needed. We provide free estimates.

Should I repair or replace my water heater?

Use the 50% rule: if the repair exceeds half the cost of replacement AND the unit is over 10 years old, replace it. If you’re seeing rust, leaks at the tank, or the unit is 12+ years old, it’s usually time.

Do I need a permit for water heater replacement in Mukilteo?

Yes — the City of Mukilteo requires permits for water heater installation. We pull the permit and schedule the inspection.


Why Choose Stollwerck for Water Heater Service?

  • Local — we’re based in Mukilteo, not driving from Seattle
  • Licensed — commercially licensed plumbers, not handymen
  • Insured — coverage above state minimums
  • Guaranteed — 1-year warranty on all work
  • Navien-certified — factory-trained for tankless installations
Gas tank water heater installed on a raised platform with seismic strapping and a thermal expansion tank
A gas tank water heater installed on a raised platform with seismic strapping and a thermal expansion tank.

Schedule Water Heater Service in Mukilteo

No hot water? Call now — we’re already in town.

Call 425-374-3909

Routine service? Request a free quote.

Request a Free Quote


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Stollwerck Plumbing & Sewer · Mukilteo, WA · WA License #STOLLPL780CJ

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