Washington Plumbing & DrainKitsap, Pierce & Mason Counties
Water Heaters · Mason County

Tankless Water Heater Installation in Allyn, WA

Tankless conversions in Allyn are a regular job for Washington Plumbing & Drain, and each one starts with the questions that decide whether it will work: what fuel serves the house, whether the gas line can feed a large burner, and what the water will do to a heat exchanger. We install Rinnai units across Mason County with the gas, venting and isolation valves done properly.

30 minutes from Port Orchard, west on Highway 3 through Belfair and south along North Bayfrom Port OrchardMasonCounty
Rinnai tankless water heater mounted on a wall with copper piping, isolation valves, expansion tank and Flo smart valve — Tankless Water Heater Installation for Allyn homes

Water supply is the first question we ask on a Allyn job. Lakeland Village and parts of Allyn are on community water systems, with Mason PUD 3 and small association systems in the area. Outlying properties along North Bay Road and up the hills are on private wells. Allyn is about 30 minutes from Port Orchard, west on Highway 3 through Belfair and south along North Bay, which puts it comfortably inside the territory we cover every week.

Why tankless water heater installation is a little different in Allyn

Winter water comes into Allyn homes cold, and that limits how many gallons per minute a tankless unit can bring to shower temperature. We size for the coldest month so two fixtures at once still work in January.

What happens past the house is not the same across Allyn. Allyn is one of the few places in rural Mason County with sewer. The North Bay/Case Inlet sewer system and water reclamation facility, built in the early 2000s after shellfish closures, replaced about 950 septic systems around North Bay, including Lakeland Village and the Allyn waterfront. Properties outside that basin remain on septic.

Local conditions that affect tankless water heater installation in Allyn

In Allyn specifically, one issue comes up more than most: Copper pinholes and aging water heaters across Lakeland Village's 1970s and 80s homes

Propane is common on Allyn acreage and cabins, and Rinnai propane models work well there. We set up the regulator, drip leg and venting for propane and size the unit for the household.

Ask a Allyn homeowner what goes wrong with plumbing here and you will usually hear a version of this: Well houses and pressure tanks on upland properties

Allyn homes with a pressure reducing valve still need a small expansion tank on a tankless system, and homes on wells need a sediment filter ahead of the unit. Both are included where your house calls for them.

Rinnai tankless water heater installed in a basement with new copper and gas piping
Tankless conversion in a basement: new gas line, new venting and clean copper connections.

Signs Allyn homeowners call us for tankless water heater installation

Worth a call

  • You plan to stay in the house long enough for the efficiency to pay back
  • A remodel or ADU is adding hot water demand the current tank cannot meet
  • The household runs out of hot water with two showers back to back
  • You want the closet or garage space the tank occupies
  • The tank heater is at the end of its life and gas is already at the location

How we handle tankless water heater installation in Allyn

Here is how it runs when we come to Allyn for tankless water heater installation: assess fuel, gas capacity and water, choose the unit and the location, flat, itemized quote, install and connect, commission under load, then permit, warranty and schedule. Nothing is started until you have approved a flat price.

Read the full step-by-step for tankless water heater installation →

Allyn neighborhoods and areas we serve

From North Bay Road to Allyn waterfront and the Port of Allyn dock, with plenty of stops around Lakeland Village Golf Course and Lake Anderson, Allyn is well-worn ground for our trucks.

North Bay RoadVictor and the Pierce County lineSherwood Creek and Grapeview Loop RoadLake AndersonHighway 3 corridorLakeland VillageAllyn waterfront and the Port of Allyn dock

Tankless Water Heater Installation questions from Allyn

How long does a tankless conversion take in Allyn?

Most are done in a day with hot water back by evening. Adding a gas line to a new location or running a long vent can push it to two days, and we tell you up front.

Do you service tankless heaters in Allyn after installing them?

Yes. We descale and service tankless units across Mason County, and most customers put the new unit on a maintenance interval matched to their water.

Will a tankless heater work on well water in Allyn?

With a sediment filter and a regular descaling schedule, yes. On very hard or iron-heavy wells we discuss filtration first and will say if a tank is the better fit.

Do you pull the permit for a tankless installation in Allyn?

Yes, for both the plumbing and the gas line, and we schedule the inspection.

Will my existing gas line work for a tankless heater?

Often not without upsizing. A tankless burner draws several times the gas of a tank heater, and lines sized for a tank and a stove starve it. We calculate the load and include any upsizing in the quote.

Freezing pump houses, iron-stained well water and septic effluent pumps are everyday work for us in Mason County. Allyn jobs rarely surprise us.

Google reviews

Customers on our tankless water heater installation work

★★★★★
Greg is awesome! He came out to service our thankless water heater (which hadn't been serviced in 11 years) and did a great job. He really put in a lot of effort to minimize any mess that it involved and was very personable during the job. His communication is also very clear.
Deborah R · Google review · 2 years ago
★★★★★
Gregory did fantastic work descaling my tankless water heater, was in and out within an hour. They texted me when he was on his way and gave me an ETA which was MUCH appreciated. Kind, courteous and professional. I will be using them for my future plumbing needs.
Krysta Cordell · Google review · 3 years ago

Tankless Water Heater Installation in Allyn?

Flat-rate price before we start. Allyn is about 30 minutes from Port Orchard, west on Highway 3 through Belfair and south along North Bay.

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