On Demand Hot Water, Sized Right and Installed Once

Tankless Water Heater Installation Portland, OR

A storage tank spends most of its life heating water nobody is using, and the day it rusts through is the day you shop for a replacement in a hurry. Prime Emergency Plumbing plans and performs tankless water heater installation Portland homeowners choose to end that cycle: on demand hot water sized to your real fixture count, vented correctly, fed by a properly sized gas line, and commissioned with the water chemistry your house actually has. Our tankless water heater Portland crews install condensing and non condensing units from Rinnai, Navien, and other leading brands, handle the permit and inspection, and convert old tank systems with minimal wall damage. From Rinnai tankless water heater Portland kitchens to multi bath houses that need recirculation, every install ends with a startup test, a calibration walkthrough, and a written warranty.
 

Same Day Swaps When Possible

Stocked trucks and planned conversions mean hot water returns fast.

Factory Trained on Major Brands

Rinnai, Navien, and other leading units installed to manufacturer spec.

Flat Written Project Pricing

Unit, labor, venting, gas work, and haul away in one approved quote.

CCB Licensed Installers

Oregon licensed plumbers with permits pulled and warranties registered.

Endless Hot Water Plans for Portland Homes in Portland

Portland’s water makes tankless an easy sell on the maintenance side. Bull Run supply runs soft, so heat exchangers here scale slower than in hard water cities, and a yearly descale keeps flow and efficiency at factory spec for decades. The bigger design questions are gas and venting: a whole house condensing unit can draw 150,000 to 199,000 BTU, which means the gas meter, regulator, and line size all get checked before we quote, and condensate gets a neutralizer where the code path requires one. Skip those steps and the best unit on the market will underperform, which is why our Portland tankless installers start with measurements, not brochures.
 
Sizing is where tankless succeeds or fails. We count the fixtures that realistically run at once, read your groundwater temperature, and pick a unit whose gallons per minute and temperature rise cover the worst case, a January morning with two showers and a laundry going. Where the math says one unit cannot cover a large house, we plan two units or a recirculation loop instead of selling you a compromise. The result is a system that delivers the endless hot water the box promises, at the pressure you expect, for the next twenty years.
 

What Your Current Water Heater Tells You Before It Quits

Hot Water That Runs Out Before the Shower Does

A tank that cannot finish one shower has lost capacity to sediment or a failing element, and tankless ends the problem entirely.

A Tank Past Its Tenth Birthday

Most storage tanks fail between years eight and twelve, and rust never sends a warning text before the leak starts.

Utility Bills Climbing With the Same Habits

Standby heat loss grows as a tank ages, and on demand heating removes the burner that runs all night for water nobody uses.

Every Tankless Service We Sell, Install, and Stand Behind

Tankless Water Heater Installation

Whole house and point of use units sized to your fixture count and installed with correct venting and gas supply.

Tankless Water Heater Replacement

Aging or undersized units swapped for correctly sized models, with the old unit hauled away.

Tankless Water Heater Repair

Error codes, ignition failures, flow faults, and heat exchanger issues diagnosed and fixed with factory parts.

Rinnai Tankless Water Heater Installation

Certified installation of Rinnai condensing and non condensing units, including recirculation ready models.

Navien Tankless Water Heater Installation

Navien condensing units and combi boilers set, vented, and commissioned to manufacturer spec.

Venting System Installation

Category IV and stainless venting routed to code, with neutralizers where required.

Tankless Water Heater Maintenance

Annual descaling, filter cleaning, and combustion checks that protect efficiency and warranty.

Pre Installation Inspections

Pressure, gas capacity, and vent path checks that make the install quote exact before the unit ships.

Tankless Water Heater Descaling

Heat exchanger flushes that remove mineral buildup and restore factory flow and efficiency.

Commercial Tankless Systems

Rack and multi unit designs for restaurants, salons, clinics, and multi family buildings.

Gas Line Installation

Meter, regulator, and line upgrades that feed 150,000 to 199,000 BTU demand safely.

Emergency Hot Water Service

24/7 response when the hot water stops, with temporary solutions while a unit is sourced.

Why Portland Owners Choose Us for Tankless Work

Hot Water That Never Runs Out

On demand heating means the second shower gets the same temperature as the first, every day.

Efficiency You Can Measure

No standby loss and higher UEF ratings show up on the utility bill within a couple of cycles.

Installers Who Know the Code

Gas tables, venting specs, and Oregon plumbing code handled on every install, with permits pulled.

Homes to Restaurant Kitchens

Single bath condos to multi unit commercial racks, one licensed crew sizes and sets them all.

Brands We Would Own Ourselves

Rinnai, Navien, and other proven units with real parts support and real warranties.

One Price Before We Start

The written quote covers unit, labor, venting, gas work, and haul away, with no day of install surprises.

Tankless Systems Sized to the Property

Residential Tankless Experts

Whether you are replacing a rusting storage tank or upgrading for endless hot water, we match the unit to your family's real usage, route the vent through the existing path where possible, and leave the mechanical room cleaner than we found it.

  • Single family homes and townhouses
  • Condos and multi family units
  • Rental properties and HOA communities
  • Basement and crawlspace installations

Commercial Tankless Solutions

Restaurants, salons, clinics, and apartment buildings cannot run out of hot water at peak hours. We design multi unit and rack systems with redundancy, so one unit in service never means a cold close.

  • Corporate offices and retail facilities
  • Restaurants, kitchens, and hospitality
  • Commercial and industrial buildings
  • Laundry and multi family hot water loops

More Services That Pair With a Tankless Upgrade

A tankless upgrade is the right moment to check the rest of the hot water path. Prime Emergency Plumbing backs your new unit with the services that keep water moving and clean everywhere it travels, across Portland and the metro.
 

Traditional Water Heater Services

Repair, replacement, and maintenance for tank systems where tankless is not the right fit.

Emergency Plumbing Repairs

24/7 response for burst pipes, leaking fixtures, and urgent failures.

Drain Cleaning Solutions

Professional drain unclogging, hydro jetting, and preventative cleaning.

Water Leak Detection

Electronic location of hidden leaks before they cause structural damage.

Sewer Repair & Inspection

Camera inspections, sewer cleaning, trenchless repairs, and line replacement.

Water Line & Pipe Repairs

Repair of damaged, aging, frozen, or leaking supply lines with durable materials.

Installation Standards That Protect the Warranty and the Wall

Every tankless water heater installation Portland, OR project follows the Oregon Specialty Plumbing Code, the manufacturer’s venting and clearance specs, and the gas piping tables that keep combustion safe. We also follow the efficiency and sizing guidance published by the U.S. Department of Energy, so your unit choice is based on measured demand, not on what was on the warehouse shelf. Permits are pulled, inspections scheduled, and the warranty registered before we call the job closed.
 

Designing the System Before Drilling the Hole

Unlike a tank swap, a tankless install is a design job. Gas demand, meter capacity, vent routing, condensate drainage, water pressure, and fixture count all shape the unit and the labor. We map those before pricing, so the quote you approve is the install you get, and the unit arrives with every fitting it needs.
 

How We Build Your Tankless System

 
  • Analyze household hot water demand
  • Calculate the correct system capacity
  • Install plumbing, gas, venting, and electrical connections
  • Verify system operation through complete safety and performance testing

Maintenance That Keeps the Heat Exchanger Like New

Scale is the only thing that kills a good tankless unit early, and Portland’s soft water makes it a slow enemy, not a fast one. Our maintenance visits flush the heat exchanger with the right solution, clean the intake filter and fan, check the vent termination, and verify combustion readings against factory spec. Units on the plan keep their efficiency curves and their warranties, and their owners never learn what a cold shower feels like mid January.
 

We Answer the Phone After the Install Too

A tankless system is a twenty year relationship, and we act like it. Questions after startup get answered, error codes get read over the phone, and warranty work gets handled by the same crew that set the unit. If a part fails in year six, you call one number and the history of your system is already on file.
 
Plumbing leak inspection technician scoping water lines in Portland

From First Visit to First Endless Shower in Four Steps

01

Hot Water Audit of the Home

We review your fixture count, shower habits, fuel source, and install location to determine the demand your system must cover.

02

System Match and Written Plan

You get a unit recommendation with real sizing math, premium options like recirculation, and one flat price for the complete install.

03

Precision Installation

Licensed plumbers set the unit, run gas and venting to spec, connect plumbing and electrical, and commission the system to code.

04

Startup, Calibration, and Homeowner Orientation

We calibrate temperature settings, confirm stable pressure, show you how to operate and maintain the unit, and register the warranty.

Tankless Coverage Across Portland and the Metro

Portland, OR

Condensing and non condensing installs across every neighborhood, with gas line upgrades where the meter demands it.

Lake Oswego, OR

High demand lake house systems with recirculation for long pipe runs.

Beaverton, OR

Tankless swaps and descaling service for Beaverton homes and small businesses.

Tigard, OR

Tankless replacements and maintenance plans for Tigard homes and salons.

Gresham, OR

Whole house tankless installs for Gresham families with back to back morning showers.

Oregon City, OR

Sloped lot homes and older gas lines brought up to tankless spec in Oregon City.

Hillsboro, OR

New construction and replacement tankless work across Hillsboro and the tech corridor.

Tualatin, OR

Residential and light commercial tankless coverage across Tualatin and the south metro.

Tankless Questions Portland Owners Ask

Two reasons show up on every quote: endless hot water and the end of standby loss. A tank heats and reheats the same forty gallons all day, while a tankless unit fires only when a fixture calls for it. Add the floor space a tank gives back and a service life that often doubles, and the switch pays for itself in most Portland homes.
 
Most quality units run fifteen to twenty years with annual descaling, and some heat exchangers carry warranties that long. Neglect is what shortens the life, mainly scale and blocked intake air. The maintenance plan exists precisely because the unit that gets flushed is the unit that reaches year twenty.
 
Yes. We install, maintain, and repair Rinnai condensing and non condensing units, including recirculation ready models, and we register the warranty at commissioning. Navien, Noritz, and other major brands are on our trucks and our training list too.
 

Almost always, and the conversion is where our design work earns its keep. The gas line often needs upsizing, the vent changes from B vent to category IV or stainless, and condensate needs a drain path. We price the full conversion in one written quote so there are no mid install surprises.

An annual descaling flush, an intake filter cleaning, and a combustion check cover most of it, with the vent termination inspected at the same visit. Portland’s soft water makes the flush a light job, but skipping it still voids warranties and steals efficiency. Ten minutes of owner care a year plus one professional visit keeps the curve flat.
 
Yes, and same day in most cases. Error codes for ignition, flow, and overheat faults map to specific components, and our trucks carry the common boards, sensors, and fans. If a part must be ordered, we tell you the timeline up front and can often provide temporary hot water for households that need it.
 

Retire the Tank. Keep the Hot Water.

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