Top Tankless Water Heater Service Companies in Kirkland, Washington Ranked

A tankless water heater provides hot water on demand, eliminating the need for a bulky storage tank and offering significant energy savings. For Kirkland homeowners, choosing the right on-demand water heater system involves understanding local installation requirements, sizing for your household, and planning for long-term maintenance. This guide will help you navigate the process of selecting and maintaining a tankless system, connecting you with the information needed to find qualified local professionals for your project.

Fast Water Heater Company

16120 Redmond - Woodinville Rd NE, Woodinville, WA 98072

Fast Water Heater Company is a water heater installation and repair provider serving Seattle, WA, and the broader West Coast including Washington, Oregon, and California. Established in 1986, the company offers services for various types of water heaters, including traditional tank and tankless models. They handle installations, repairs, and maintenance with adherence to safety and building codes, ensuring compliant and secure service. Fast Water Heater Company provides same-day installation if contacted by noon, supporting timely resolution of hot water issues.

4.9

2.1k Reviews

Ready Rooter

13222 SE 30th St Suite A-1, Bellevue, WA 98005

Ready Rooter is a plumbing and drain specialist serving Seattle, WA, and nearby areas. They offer a wide range of services including drain cleaning, sewer line repair, trenchless sewer repair, sump pump repair, tankless water heater installation, leak detection, repiping, and toilet repair. Their trenchless sewer line repair minimizes disruption while addressing sewer issues. The company is supported by experienced owners and technicians with many years in the industry. Ready Rooter provides 24/7 emergency services to assist customers whenever needed.

4.9

1.6k Reviews

Benjamin Franklin Plumbing of Redmond

18800 142nd Ave NE #2a, Woodinville, WA 98072

Benjamin Franklin Plumbing of Redmond provides plumbing services in Seattle, WA, specializing in water heater repair, tankless water heater installation, drain cleaning, and leak detection. They offer 24/7 emergency plumbing service to address urgent issues at any time. The company emphasizes routine maintenance such as annual water heater flushing and drain cleaning to help prevent common plumbing problems. They also recommend upgrades like low-flow fixtures and smart leak detectors to improve water efficiency and system reliability.

5.0

120 Reviews

Pelican Plumbing LLC

4181 Wheaton Wy # 3, Bremerton, WA 98310

Pelican Plumbing LLC is a plumbing contractor based in Seattle, WA, specializing in residential and commercial plumbing services. They offer whole-home re-piping, gas line installations, tankless water heater installation, sump pump repair, drain cleaning, leak detection, and water heater repair. Serving Kitsap County, Gig Harbor, and Tacoma, Pelican Plumbing focuses on high-end remodels, new construction plumbing, and safe, code-compliant gas and propane line installations. With over seven years of experience and union training, they have completed more than 100 projects, providing expert craftsmanship and reliable plumbing solutions.

5.0

109 Reviews

George Gas Piping

601 12th Ave NW, Issaquah, WA 98027

George Gas Piping is a plumbing service based in Seattle, WA, specializing in gas piping installation for both residential and commercial projects. Their services include water heater and tankless water heater installation, furnace installation, and gas line installation and repair. They have expertise in gas repiping, appliance hookups, and supplying new gas piping from the street to homes. With over 10 years of experience, George Gas Piping serves multiple areas including Kent, Redmond, Renton, Kirkland, Issaquah, Woodinville, Sammamish, Bellevue, Bothell, and Seattle.

5.0

109 Reviews

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Understanding Tankless Water Heaters

Unlike traditional tank-style heaters that constantly heat and store water, tankless (or on-demand) water heaters heat water directly as it flows through the unit. This means you get a continuous supply of hot water, and you're only paying to heat water when you actually use it. The primary benefit is energy efficiency, which can lead to lower utility bills. For a typical Kirkland home, this technology is an excellent upgrade, especially when replacing an old, inefficient tank model. The key to success lies in proper installation and sizing, which ensures the system meets your home's specific hot water demands.

Key Considerations for Installation in Kirkland

Installing a tankless system is more complex than a simple tank replacement. It requires careful planning around your home's existing infrastructure and local codes.

Sizing Your System Correctly

The most critical step is sizing your tankless water heater to handle your household's peak hot water demand. This is measured in gallons per minute (GPM). You must calculate the total GPM needed if multiple fixtures (e.g., two showers and a dishwasher) run simultaneously. An undersized unit will struggle to keep up, while an oversized one is an unnecessary expense. A professional installer will assess your home's layout, fixture flow rates, and incoming water temperature to recommend the correct capacity.

Fuel Type: Gas vs. Electric

Your choice between a natural gas or electric on-demand heater has major implications for installation complexity and cost.

• Gas Tankless Heaters: These are common for whole-home applications due to their high flow rates. Installation often requires verifying or upgrading your gas line to provide adequate volume and pressure. They also need a dedicated, specialized venting system, which can be a significant part of the installation.
• Electric Tankless Heaters: These are often simpler to vent but can demand a substantial electrical upgrade. Many homes require a new dedicated circuit, and your electrical service panel may need to be upgraded to handle the additional 100-150 amp draw, which is a considerable project.

Venting Requirements

Venting is a crucial and code-specific aspect of gas tankless water heater installation. These units cannot use existing chimney flues. Instead, they require dedicated, direct venting-often using specialized PVC or stainless-steel piping-to expel exhaust gases safely outdoors. The venting material and routing must comply strictly with Kirkland's adoption of the Uniform Plumbing Code and manufacturer specifications.

Location and Placement

One advantage of tankless systems is their compact size, allowing for flexible placement. They can be installed in garages, utility closets, attics, or on exterior walls. The location must provide easy access for future maintenance, meet clearance requirements for safety, and accommodate the necessary connections for water, gas, electricity, and venting ¹.

Navigating Kirkland Permits and Codes

The City of Kirkland requires permits for water heater replacement to ensure safety and code compliance. You or your installer must obtain Mechanical and Plumbing permits from the Development Services Center. Inspectors will check that the installation includes required components like sediment traps on gas lines, proper bonding of pipes, and correct venting materials. Skipping permits can lead to fines and problems when you sell your home, so working with a licensed professional who handles this process is essential ².

Cost Breakdown for Installation

The total cost for a tankless water heater installation in Kirkland varies widely based on the unit type, your home's existing infrastructure, and labor. Here's a general breakdown:

• Unit Cost: The tankless heater itself typically ranges from $500 to $1,500 for electric models and $1,000 to $2,500 for natural gas models.
• Installation Labor & Materials: This is where costs can escalate. For a straightforward electric installation, labor might range from $800 to $1,500. For a gas installation, which includes complex venting and gas line work, labor and materials often range from $2,500 to $5,000 or more ³.
• Additional Infrastructure Upgrades: These are common and must be budgeted for:
• Gas line upgrade: $800 - $2,000
  • Electrical service upgrade: $1,500 - $3,000+ ⁴
• New venting system: $300 - $800+
• Permits: Plan for $100 to $300+ in permit fees from the City of Kirkland ^{5 6}.

Therefore, a full gas tankless system installation in Kirkland, including potential upgrades, commonly falls between $2,500 and $5,000+, while electric systems can range from $1,000 to $3,000+ ^{7 8 9}.

Long-Term Maintenance and Lifespan

A significant benefit of tankless technology is its longevity. With proper annual maintenance, a tankless water heater can last 20 years or more, compared to 10-15 years for a traditional tank model.

Maintenance is non-negotiable, especially in areas with hard water. The primary task is an annual flushing of the unit to remove mineral scale (sediment) that builds up on the internal heat exchanger. This process involves circulating a descaling solution through the heater. Neglecting this can reduce efficiency, cause overheating, and shorten the unit's life. Additionally, the burner assembly (in gas models) and air filters should be inspected and cleaned periodically ¹⁰.

Repair Considerations for Tankless Systems

While reliable, tankless water heaters can experience issues like error codes, ignition failures, fluctuating water temperature, or reduced flow. Repairs often involve diagnosing electronic control boards, cleaning or replacing flow sensors, or addressing scale buildup. Due to the specialized nature of these units, repairs should always be handled by a technician certified to work on your specific brand and model. Regular maintenance is the best way to minimize the need for repairs.

Frequently asked questions

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