Tankless Water Heater Installation Pricing
Choose the Right Tankless System for Your Home
Compare tankless replacement and tank-to-tankless installation options, with clear recommendations and upfront pricing.
We help you choose a system based on your home’s hot-water needs, existing installation and comfort preferences.
UPFRONT PRICING   •   SAME-DAY SERVICE AVAILABLE   •   LOCALLY OWNED & OPERATED   •   RESIDENTIAL SPECIALIST
No Mystery Pricing
Know where pricing starts and what your installation includes. Whether you’re replacing an existing tankless water heater or upgrading from a tank, the options below give you a clear starting point.
We evaluate your home’s hot-water needs and existing connections, explain any additional work, and provide a complete flat-rate price before work begins.
Tankless Water Heater Options by Home Size
Tankless water heaters are sized primarily by how much hot water your home may need at the same time. The number of bathrooms provides a helpful starting point.
Prices below are for standard models without an internal recirculation pump, before applicable rebates. We confirm the appropriate capacity, equipment and installation requirements during your evaluation.
Tankless for 1–2 Bathrooms
A properly sized, high-efficiency tankless water heater for smaller homes with typical simultaneous hot-water demand.
Existing Tankless Replacement:
Navien NPE-180S2
Starting at $3,695
Tank-to-Tankless Conversion:
Noritz EZ71
Starting at $4,295
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See installation details below for what’s included.Â
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Built-in recirculation available. See the options below.
Tankless for 2–3 Bathrooms
A higher-capacity, high-efficiency tankless water heater for homes that may use multiple hot-water fixtures at the same time.
Existing Tankless Replacement
Navien NPE-210S2
Starting at $3,895
Tank-to-Tankless Conversion
Noritz EZ98
Starting at $4,495
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See installation details below for what’s included.Â
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Built-in recirculation available. See the options below.
A high-capacity, high-efficiency tankless water heater for larger homes and households with greater simultaneous hot-water demand.
Tankless for 3+ Bathrooms
Existing Tankless Replacement
Navien NPE-240S2
Starting at $4,195
Tank-to-Tankless Conversion
Noritz EZ111
Starting at $4,795
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See installation details below for what’s included.
Built-in recirculation available. See the options below.
Models shown are starting recommendations. We confirm the appropriate equipment and installation requirements for your home before providing the final price.
Homes with unusually high simultaneous hot-water demand may require additional equipment or a different system design.
Existing Tankless Replacement
The starting replacement price applies when the existing location and surrounding systems are compatible and serviceable. We reconnect compatible existing venting where appropriate. Required changes to venting, utility connections or the piping arrangement are identified during the evaluation and included in your final quote.
A conversion also includes up to 10 total linear feet of manufacturer-approved intake and exhaust piping combined with standard fittings and approved terminations. Venting materials, sizing and routing must suit the selected equipment and installation.  For exterior installation, an exterior Cap for intake and exhaust can be installed.
Tank-to-Tankless Conversion
Permits & Inspection Fees
Permit and inspection fees are not included in the listed starting prices. Your written proposal identifies permit requirements and applicable fees before work begins.
What Your Tankless Installation Includes
Our standard installation includes the equipment, connections and testing described below. We confirm the work required for your home and provide your complete flat-rate price before installation begins.
Equipment & Mounting
Selected professional-grade, high-efficiency condensing tankless water heater, removal and disposal of the existing heater, and installation in the same approved location with standard wall mounting.
Water Piping & Service Valves
Up to 10 total feet of ¾-inch Type L copper water piping and standard fittings near the heater, tankless isolation and service valves, and an expansion tank where required.
Gas & Electrical Connections
A new approved gas connector and sediment trap, connection to an existing properly sized gas supply, and connection to suitable existing electrical outlet near the installation.
Condensate & Installation Materials
A condensate neutralizer where applicable, up to 10 feet of ¾-inch PVC condensate piping to an approved nearby gravity-drainage point.
Startup & Testing
Startup, programming and complete performance testing to confirm proper system operation.
Cleanup & Guidance
Jobsite cleanup and a review of your new water heater’s operation and maintenance requirements.
Built-In Recirculation Upgrade — Add $500
Choose a compatible Navien NPE-A2 or Noritz NRCR model with an internal recirculation pump.
We recommend the appropriate model based on your home’s hot-water demand and plumbing configuration. Final upgrade pricing depends on the selected equipment and connection requirements.
Want Hot Water Sooner?
Recirculation improves hot-water delivery to your fixtures. It does not replace proper water-heater sizing.
A tankless water heater with a properly configured recirculation system can reduce hot-water waiting time and the water wasted while waiting.
Homes With a Dedicated Return Line
The internal pump may connect to an existing compatible recirculation return line.
Homes Without a Dedicated Return Line
Some homes can use a compatible crossover kit that returns water through the existing cold-water piping. A crossover system can temporarily warm water in the cold-water line during circulation.
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Crossover Kit — $225 Installed
With purchase and installation of a new recirculation-equipped water heater.Â
How We Confirm the Right Size
Bathroom count gives you a helpful starting point. We confirm the right capacity by looking at how your household uses hot water and what your system needs to deliver.
You do not need to choose a model yourself. We confirm the appropriate capacity and explain our recommendation before installation.
Your Hot-Water Demand
We review shower flow rates, fixtures you may use at the same time and your household’s hot-water habits. Large bathtubs and high-flow fixtures also affect the recommendation.
Incoming Water Temperature
We consider the temperature of the water entering your home and your desired hot-water temperature. The amount of heating required affects how much hot water a tankless unit can deliver at one time.
The Right System for Your Home
We consider your demand, water temperatures and any existing or planned recirculation before recommending equipment. Unusually high simultaneous demand may require additional equipment or a different system design.
Our Installation Process
A simple, transparent approach from diagnosis to completion—so you know exactly what to expect.
Evaluate Your System
We inspect your system, assess performance, and identify any issues or installation needs.
Review Options & Pricing
We walk you through our findings and provide clear solutions with upfront pricing before any work begins.
Service & System Testing
We perform the approved work with attention to detail, then verify proper operation and safety.
Guidance & Ongoing Care
We explain what was done and provide recommendations to help maintain performance and extend system life.
No Surprises. No Pressure.
You’ll always know what’s being done, why it matters, and what it costs before work begins.
Tankless Installation Pricing Questions
Care for Your Tankless System
Your installation is the starting point. We help you understand ongoing maintenance and whether water-treatment improvements would be useful for your home.
"Maintenance services and optional water-treatment or recirculation upgrades are priced separately from the standard installation."
Tankless Maintenance
Concerned about hard water? We can discuss whether a water softener would be a useful part of your home’s scale-management plan.
Explore Water Softening
Tell us what you would like to improve about your water. We explain suitable filtration options and what each system is designed to address.
Explore Water Filtration
Why Homeowners Choose The Water Heater Guy
Professional service, clear communication, and solutions designed to last.
Licensed & Insured
Clear Communication
We explain what’s happening and walk you through your options—so you’re never left guessing.
Same-Day Service Available
Professional Recommendations
We help you choose the right solution for your home, not just the quickest fix.
Locally Owned & Operated
Clean, Respectful Service
We treat your home with care and leave the workspace clean when the job is done.
Upfront Pricing
Built for Long-Term Reliability
We focus on solutions designed to perform, last longer, and prevent future issues.
What Homeowners Say About Working with Us
See why homeowners throughout Orange County and Long Beach choose The Water Heater Guy for clear recommendations, upfront pricing, and professional water heater service.
Tim was great and very professional from the very first phone call and texts. He offered an excellent quote… He was concerned that my family had already been without hot water and came early and promptly the next morning. He uses the best professional parts and thoroughly explained his recommendations for our water heater system. He was very courteous and gave awesome customer service. I would highly recommend the Water Heater Guy for all your water heater needs.
Michele G., Long Beach, CA