
Tankless Water Heater Installation Spokane WA
Never run out of hot water again! Upgrade to a tankless system and enjoy endless hot water, lower energy bills, and more space in your home.
Service Overview
Tankless water heaters provide hot water on demand and can free space used by a storage tank. We install and service major brands and help size equipment for the property, usage, fuel source, and existing plumbing.

Watch Our Pros in Action

Temporary Flammable Vapor Sensor Hack for Water Heater! #plumber #plumbing #waterheater #hack
2:17
Fastest Way To Swap A Gas Valve On Water Heater! #plumbing #plumber #tradeschool

Replacing a water heater flex! #plumbing #plumber #diy #spokane
Helpful Wrenchs & Resources
Estimate Your Cost
Get a rough estimate for your plumbing service
Our Services
Tankless Installation
Complete tankless water heater installation with proper sizing, venting, and code compliance.
- Gas and electric tankless systems
- Whole-house and point-of-use units
- Professional sizing calculations
- Proper venting and gas line upgrades
- All permits and inspections handled
- Old unit removal and disposal
Tankless Conversion
Convert from traditional tank to tankless with complete system upgrade and optimization.
- Tank to tankless conversion specialists
- Gas line sizing and upgrades
- Electrical service upgrades if needed
- Venting system installation
- Water line modifications
- Energy rebate assistance
Tankless Repair & Maintenance
Expert repair and annual maintenance to keep your tankless system running efficiently.
- Annual descaling service
- Error code diagnosis and repair
- Flow sensor cleaning
- Burner and heat exchanger service
- Filter replacement
- Warranty service for all major brands
Common Problems We Solve
Cold Water Sandwich
Brief cold burst between hot water uses. Usually indicates undersized unit or need for buffer tank.
Error Codes Displayed
Various error codes indicate specific issues. Requires professional diagnosis and repair.
Reduced Flow Rate
Mineral buildup in heat exchanger. Needs professional descaling service.
Unit Won't Ignite
Could be gas supply, igniter, or flame sensor issue. Professional service required.

Why Choose Plumb Zebra?
Our Process
Home Assessment
We calculate your peak hot water demand, check gas line capacity, and evaluate venting options to ensure proper sizing.
System Selection
We recommend the right tankless unit for your needs and budget, explaining all options and available rebates.
Professional Installation
Our certified technicians install your system to manufacturer specs with proper venting, gas lines, and code compliance.
Testing & Training
We test the system thoroughly, program settings for optimal performance, and show you how to use and maintain it.

Maintenance Tips
Annual Descaling
Flush with descaling solution annually to remove mineral buildup from heat exchanger. Critical in Spokane's hard water areas.
Frequency: Once per year
Inlet Filter Cleaning
Clean the inlet screen filter every 6 months to maintain proper flow rate and prevent damage.
Frequency: Every 6 months
Exterior Vent Inspection
Check exterior vents for blockages, bird nests, or damage that could affect combustion.
Frequency: Twice per year
Frequently Asked Questions
How much does tankless water heater installation cost?
Pricing depends on diagnosis, access, materials, equipment, permits or inspections, and the authorized scope. We provide the price before work begins.
Will a tankless water heater work with Spokane's hard water?
Yes, but hard water requires annual descaling maintenance. We recommend water softeners for tankless systems in Spokane to prevent mineral buildup and extend unit life. We can install both together for optimal performance.
Can I replace my tank water heater with tankless?
Absolutely! Most homes can convert to tankless. We'll assess your gas line capacity (may need upgrade), electrical service, and venting options. The investment pays off through energy savings and endless hot water.
What size tankless water heater do I need?
It depends on simultaneous hot water usage. A family of 4 typically needs a unit rated for 7-10 GPM. We calculate your peak demand (showers, dishwasher, laundry) and size accordingly. Undersizing causes cold water sandwich effect.
How long does tankless installation take?
Timing depends on diagnosis, access, parts or equipment availability, permits or inspections, site conditions, and the authorized scope. The team confirms the expected schedule after evaluation.
What brands of tankless water heaters do you install?
We're certified installers for Rinnai, Navien, Rheem, and Noritz - the industry's top brands. We'll recommend the best brand for your specific situation and budget.
Do tankless water heaters really save money?
Energy use and savings depend on hot-water demand, equipment efficiency, fuel rates, installation conditions, and the system being replaced. Review the selected model's specifications and any current utility incentives before deciding.
Tank vs tankless water heater: which is better?
Tank water heaters cost less up front and are simpler to install, but store a fixed amount of hot water and typically last 8-12 years. Tankless units heat water on demand, so you get virtually endless hot water, save space, and typically get 15-20+ years of service with lower standby energy loss — at a higher upfront cost, and larger homes may need gas line or venting upgrades. Tankless usually pays off for households that run out of hot water or plan to stay in the home long term.
Schedule Your Tankless Water Heater Installation Spokane WA Today
Get a free estimate and schedule your service with Spokane's trusted plumbing experts
Get In Touch
Call or Text
(509) 317-9009Hours
Monday – Friday: 7 AM – 6 PM
Saturday: 8 AM – 4 PM
24/7 Emergency Service Available
Emergency Service Available
For a plumbing emergency, call us instead of relying on the web form.
Call Now: (509) 317-9009







