Tell us what's going on and a water heater specialist in Mercer Island will contact you ASAP. Free estimates, no obligation.
Licensed plumbers serving Mercer Island and surrounding areas. Click a service to learn more.
Old unit failing? Get a new tank or tankless water heater installed in Mercer Island — often the same day.
Learn More →No hot water, strange noises, or leaking? A licensed Mercer Island plumber will diagnose and fix it fast.
Learn More →Building, remodeling, or upgrading? Expert water heater installation for Mercer Island homes.
Learn More →Endless hot water, lower energy bills, and a 20+ year lifespan for Mercer Island homeowners.
Learn More →Installed prices for Mercer Island homeowners including unit, labor, permits, and disposal.
| Type | Installed Cost | Lifespan | Best For |
|---|---|---|---|
| Tank (50 gal) | $2,500 | 8–15 yrs | Most homes — gas or electric |
| Tankless | $5,000–$7,000 | 20+ yrs | High demand, endless hot water |
| Heat Pump / Hybrid | $3,500–$7,000 | 13–15 yrs | Max efficiency, up to $2K tax credit |
What Mercer Island homeowners need to know before replacing a water heater.
Puget Sound Energy (PSE) — average residential rate: 11.50¢/kWh
Puget Sound Energy (PSE)
City of Mercer Island — plumbing permit $100–$175. Your plumber handles it.
Custom waterfront estates, mid-century modern homes, and newer luxury rebuilds throughout the island
A licensed plumber typically reaches Mercer Island within 1–2 hours.
98040
Water heater replacement, repair, and installation throughout Mercer Island and surrounding areas.
"Our water heater burst on a Sunday morning. Called at 8am and a plumber was at our house by 10. New unit installed by the afternoon. Couldn't believe how fast it was."
"Got an instant quote. The plumber was the most knowledgeable and fairly priced. New tankless unit is working perfectly."
"No hot water with a newborn in the house. They treated it like the emergency it was. Plumber arrived same day, diagnosed the issue, and had it fixed in under two hours."
"Honest, straightforward service. The plumber actually talked us out of a full replacement and fixed our unit for a fraction of the cost. That's integrity."
"We switched from a tank to tankless and the difference is night and day. Endless hot water, lower gas bill, and it freed up so much space in our garage."
"Living on the peninsula, I wasn't sure how quickly someone could get here. A plumber was at our door within two hours and had our new water heater running before dinner."
"Our 15-year-old water heater finally gave out. The plumber helped us pick the right size for our family of five and installed it the same day. Great experience."
"Fair price, fast work, and the plumber cleaned up after himself. Our old unit was leaking for weeks — wish we had called sooner. New heater works like a dream."
"As a single mom, I was worried about getting overcharged. The estimate was straightforward with no surprises. The plumber even showed me how to flush the tank annually."
"We're out in a rural area and weren't sure anyone would come this far. A plumber arrived next morning and swapped out our old electric tank. Professional and on time."
A standard 50-gallon tank water heater costs $2,500 installed in Mercer Island. Tankless units run $5,000–$7,000. Get an instant price estimate for your specific home.
Yes. City of Mercer Island requires a plumbing permit ($100–$175) for all water heater replacements. Your plumber handles the permit and schedules the inspection.
It depends on your utility setup. Mercer Island is served by Puget Sound Energy (PSE) for electricity and Puget Sound Energy (PSE) for gas. If you have gas service, a gas water heater is typically cheaper to operate. All-electric homes should consider a heat pump water heater for maximum savings.
Most plumbers in our network reach Mercer Island within 1–2 hours. For emergencies, priority response is available.
If your unit is under 8 years old and the repair costs less than half the price of a new one, repair makes sense. If it's 10+ years old, leaking from the tank, or needing frequent repairs, replacement is the better investment.
For 1–2 people: 30–40 gallons. For 3–4 people: 50 gallons. For 5+ people: 75+ gallons or a tankless unit rated for 8+ GPM. Your plumber will size it based on your household's peak hot water demand.
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