Instant, Endless Hot Water Solutions: No More Waiting!

Pipecraft Plumbing offers top-quality Navien tankless water heater installation, maintenance, and repair in Arvada, Westminster, Golden, Wheat Ridge, and Lakewood.

Tired of running out of hot water mid-shower? Say goodbye to lukewarm showers and waiting for the tank to refill! Upgrading from a traditional tank water heater to a Navien tankless water heater means endless hot water, instantly. Enjoy the convenience of on-demand hot water while saving water, energy, and space. Tankless water heaters are small, smart, and energy-efficient, making them a great upgrade for any home. Plus, rebates and tax incentives are available for Energy Star certified models, making the switch even more rewarding. Upgrade to a tankless water heater and experience the luxury of endless hot water whenever you need it!

Tankless Water Heaters Buyers Guide

Condensing vs. Non-Condensing Technical Specifications

Energy Efficiency and Rebates

Troubleshooting and Maintenance

Tankless
for Businesses

How Does a Tankless Water Heater Work?


Voted Best of the Best Plumbing companies in Arvada, Wheat Ridge, and Westminster, Pipecraft Plumbing is your trusted source for all your plumbing needs. From pipe repairs and clogged drains to routine maintenance and renovation installations of new fixtures and appliances, our team of licensed and insured plumbers prioritizes safety and customer satisfaction, ensuring your plumbing system runs smoothly for years to come.

Navien Tankless Water Heaters at-a-Glance Buyer’s Guide

Pros

  • Overall Cost – Best lifetime value for equipment and energy costs.
  • Energy Efficiency – Heats water only when needed (on demand), reducing energy consumption.
  • Space-Saving – Compact design saves valuable space.
  • Endless Hot Water – Continuous hot water supply for large families or high usage.
  • Longevity – Longest equipment lifespan compared to traditional tank heaters.

Cons

  • Initial Cost – Higher upfront cost.
  • Installation Complexity – May require upgrading existing plumbing or electrical systems.
  • Inconsistent Temperatures – Some users experience fluctuations in water temperature.
  • Maintenance Needs – Regular maintenance required.
  • Potential Lag Time – Short delay before hot water reaches the tap.

Features

  • Energy Source – Gas
  • Efficiency Rating – Ultra high .96 UEF ENERGY STAR® certified condensing models.
  • Digital Controls – Precise temperature settings.
  • Condensing Technology – Ultra high efficiency.
  • Recirculation Pumps – for faster hot water delivery.
  • Self-diagnostics
  • Backlit-Display
  • Convertible – °F to °C
  • User-friendly interface
  • Easy setup

Additional Considerations

  • Warranty – 15-year warranty on the heat exchanger and 5-year warranty on other parts.
  • Installation Time – 4-8 hours.
  • Placement – Proper venting required.
  • Repairs – Mineral buildup, sensor failure, and venting problems possible.
  • Reliability – Navien ultra high efficiency condensing models are the top selling tankless water heaters in the United States.

Maintenance

  • Annual Service – Required for optimal performance for residential systems. Commercial tankless systems may require more frequent service based on demand and application.
  • Flushing and Descaling – Recommended to remove mineral buildup, especially in hard water areas.
  • Cleaning the Water Filter – Maintain water flow and efficiency.
  • Cleaning the Air Filter – Maintain air flow and combustion efficiency.

Longevity

  • Lifespan – 15-20+ years with proper maintenance.

Warranty Service & Return Policy
[Download]

Navien Warranty Policy for Replacement Parts Purchased for Out of Warranty Units
[Download]

Tankless Delivers Endless Hot Water, Low Utility Bills

Non-Condensing vs. Condensing Water Heaters

Navien’s high-efficiency tankless water heaters provide a continuous supply of instant, endless hot water while keeping your energy costs remarkably low. And, they are the #1 selling high-efficiency condensing tankless water heaters in North America.

Navien Product Registration
SpecificationsNon-Condensing Gas Tankless Water Heaters
[Spec Sheet]
[User’s Manual]		Condensing Gas Tankless Water Heaters
[Spec Sheet]
[User’s Manual]
199k BTU Model

~5.5 GPM in Denver

3-5 🙋
2 showers + 1 sink		NHW-199AI
Max DHW Input: 199,900 BTU/h

Indoor wall-hung

Residential/Commercial		NPE-240A2
Max:199,900 BTU/h

Residential/Commercial

ComfortFlow® Recirculation
180k BTU Model

~3.5 GPM in Denver

1-2 🙋
1 shower + 1 sink		NHW-180AI
Max DHW Input: 180,000 BTU/h

Indoor wall-hung

Residential/Commercial		NPE-210A2
Max: 180,000 BTU/h

Residential/Commercial

ComfortFlow® Recirculation
Initial costLower than comparable condensingHigher than comparable non-condensing
Long term operating costHigher than condensing.

Lower than a traditional tank.		Lower than non-condensing tankless.

Lower than storage tank system
Efficiency

(Traditional tank .54-.72 UEF)		High Efficiency
(UEF > .81)		Ultra-High Efficiency (UEF up to .96)
Installation LocationIndoors Wall Mounted
Indoors Wall Mounted

Weight 77lbs
18”w x 28”h x 13”d
DimensionsSlightly smaller than condensing, 80% smaller than a traditional tank.

Weight 60 lbs
14”w x 23”h x 10”d		Slightly larger than non-condensing, about 70-80% smaller than a traditional tank.

Weight 77 lbs
18”w x 28”h x 13”d
Maintenance requirementAnnual service recommended.Annual service recommended.
Venting3″ x 5″ metal concentric requiredPVC acceptable
DurabilityStainless steel heat exchanger.Stainless steel heat exchanger.

What are the benefits of installing a tankless water heater with a recirculation pump in multi-story homes?

  • Instant access to hot water now: Tankless water heaters heat water on-demand, saving energy and eliminating the need to wait for hot water to travel through the pipes.
  • Improved pressure: Recirculation pumps keep hot water readily available in distant faucets, improving pressure, especially in multi-story homes.
  • Reduced water waste: The pump circulates hot water through a dedicated loop, eliminating the need to run the faucet and wait for hot water to arrive, which reduces water waste.
  • Increased efficiency: By keeping hot water readily available, recirculation pumps help reduce the energy needed to heat water, making them a great option for multi-story homes.

With a tankless water heater and recirculation pump, you can enjoy hot water now, without the wait, and improve the overall efficiency of your water heating system.


Pipecraft Plumbing is dedicated to delivering top-notch tankless water heater and plumbing services with a focus on quality, integrity, and customer satisfaction. As a fully licensed and insured company, we pride ourselves on offering expert solutions at competitive prices, all while maintaining honesty and transparency in our dealings.


Jacob Kerns MP.00600362, Master Plumber
Pipecraft Plumbing, Inc. PC.0003520, Plumbing Contractor

Safety
Tankless water heaters have complex electrical, water, and gas connections, posing a risk of scalding, electrical shock, or gas leaks if not handled properly. Our expert technicians ensure a safe installation or repair, following manufacturer guidelines and meet current plumbing codes to protect your family.

Expertise
Pipecraft’s licensed plumbers have the tankless water heater training and experience to ensure a proper installation or repair, maximizing your system’s efficiency and longevity, and protecting your warranty.

Efficiency
Our skilled plumbers complete their work quickly and efficiently, minimizing disruptions to your hot water supply and daily routine.

Warranty Protection
Many tankless water heater manufacturers require professional installation or maintenance to maintain warranty coverage. Trust Pipecraft Plumbing for your tankless water heater needs to ensure warranty protection and peace of mind.

How Do I Know What Size Water Heater I Need?

Household Size \ Water Heater TypeGas Water HeatersElectric Water HeatersHybrid Electric Water HeatersTankless Water Heaters
1-2 people30-40 gallons30-40 gallons50 gallons3-4 GPM
3-4 people40-50 gallons40-50 gallons65 gallons5-6 GPM
5-6 people50-75 gallons50-80 gallons65-80 gallons7-9 GPM
6+75+ gallons or
2 x 50-gallon units		80+ gallons or
2 x 50-gallon units		80+ gallons or
2 x 50-gallon units		10+ GPM or multiple units
CommercialCall Pipecraft Plumbing for a free estimate and the best solution for your Restaurant, Salon, Laundromat, Carwash, Medical Practice, Cafe, etc.Call Pipecraft Plumbing for a free estimate and the best solution for your Restaurant, Salon, Laundromat, Carwash, Medical Practice, Cafe, etc.Call Pipecraft Plumbing for a free estimate and the best solution for your Restaurant, Salon, Laundromat, Carwash, Medical Practice, Cafe, etc.Call Pipecraft Plumbing for a free estimate and the best solution for your Restaurant, Salon, Laundromat, Carwash, Medical Practice, Cafe, etc.

Testimonials

See Our Google Reviews!
Tankless Water Heaters are sized based on flow rate (GPM) rather than tank capacity. Flow rate is determined by BTU – this is seriously impacted by altitude. In Colorado, we recommend 199k BTU tankless water heaters for most applications and 180k BTU for very low demand and small households (1-2 people). The flow rate required increases with the number of users and their simultaneous hot water demands. Larger households may need multiple units to ensure adequate hot water supply during peak usage.

Why Choose Pipecraft Plumbing for Your Navien Tankless Water Heater Installation, Maintenance, or Repair?

Our expert technicians specialize in installing top-quality tankless water heaters from all leading brands, ensuring your system operates safely and efficiently for years to come.

We prioritize clear communication, upfront pricing, and a smooth installation process so you know exactly what to expect.

Investing in professional tankless water heater installation from PipeCraft Plumbing offers benefits that go beyond a successful setup.

Peace of mind comes with knowing your tankless water heater is in expert hands. Proper installation, regular maintenance, and timely repairs extend your system’s life, save money, and keep your home safe and comfortable. Contact PipeCraft Plumbing today for reliable tankless water heater installation in Arvada, CO.

What are the benefits of installing a tankless water heater with a recirculation pump in multi-story homes?

  • Instant access to hot water now: Tankless water heaters heat water on-demand, saving energy and eliminating the need to wait for hot water to travel through the pipes.
  • Improved pressure: Recirculation pumps keep hot water readily available in distant faucets, improving pressure, especially in multi-story homes.
  • Reduced water waste: The pump circulates hot water through a dedicated loop, eliminating the need to run the faucet and wait for hot water to arrive, which reduces water waste.
  • Increased efficiency: By keeping hot water readily available, recirculation pumps help reduce the energy needed to heat water, making them a great option for multi-story homes.

With a tankless water heater and recirculation pump, you can enjoy hot water now, without the wait, and improve the overall efficiency of your water heating system.


Rebates for Water and Energy Efficient Plumbing Fixtures in Colorado


Public Energy Companies, Government agencies and Local Municipalities offer rebates to encourage energy and water-efficient fixture and equipment upgrades. Take advantage of these incentives to save money and enhance your plumbing system! Explore these opportunities to optimize your plumbing system while minimizing expenses. For expert plumbing services, trust Pipecraft Plumbing. Contact us today!

General Information

Residential

Commercial

Plumbing Photo Guide
What’s Wrong with My Plumbing?

Ceiling Leak
Wall Leak
Slab Leak
Sewer Leak
Pipe or Joint Leak
Noisy Pipes
Discolored Water

How Often Does My Navien Tankless Water Heater Need Routine Maintenance?

In Colorado, where water can be particularly hard, regular maintenance is crucial to prevent scale and sediment from compromising your tankless water heater’s efficiency and lifespan. Schedule annual inspections and servicing with Pipecraft Plumbing to keep your instant hot water flowing smoothly and reliably.

Maintaining your tankless water heater is essential for ensuring efficient operation and longevity, especially in Colorado’s varying climate. For gas water heaters, regular maintenance includes checking the gas lines and connections, inspecting the venting system, and routine descaling to remove mineral buildup and ensure optimal performance.
Signs your water heater needs maintenance or repair:

  • No Hot Water
  • Error Codes and Alarms
  • No Power to the Unit
  • Leaks
  • Sediment Buildup
  • Low Efficiency
  • Pressure Problems
  • Valve Leaks
  • Strange Noises
  • Rusty, Discolored, or Smelly Water

Call Pipecraft Plumbing to Schedule Routine Maintenance for your Navien Tankless Water Heater!

Tankless Water Heater FAQ

Several reliable brands of tankless water heaters are reliable, including Rinnai, Navien, Noritz, Bradford White, Bosch, and AO Smith. The key is to work with Pipecraft Plumbing to evaluate your entire system. Our team of licensed plumbers will recommend the best brands and models based on factors like reliability, equipment experience, lifespan, ease of maintenance, warranty repair rates, manufacturer support, and parts availability.

Tankless water heaters are excellent options for household or business applications. In Colorado, working with a licensed plumber who understands gas and electrical requirements and settings that need to be adjusted for altitude is essential. Some popular and reliable tankless water heater brands include Navien, Bradford White, Rinnai, AO Smith, Bosch, and Noritz. Pipecraft Plumbing has installed, maintained, and repaired all brands of tankless water heaters. Eternal tankless water heaters closed their doors years ago, leaving Eternal owners without help or parts to support their systems. Pipecraft has installed, repaired, maintained, and replaced Eternal tankless water heaters. If your Eternal water heater isn’t working, call us, and we’ll advise you on the health of your system and review the solutions and options available for maintenance, repair, or replacement.

Navien tankless water heaters can last up to 20+ years. Proper maintenance is essential to achieve this lifespan. Call Pipecraft Plumbing to schedule routine maintenance of your tankless water heater.

Navien tankless water heaters typically need 2-4 amps. They come with a factory-installed 3-pronged (grounded) plug that can be plugged into any nearby grounded electrical outlet.

Hire a licensed plumbing contractor like Pipecraft Plumbing to install your Navien tankless water heater. Proper installation involves disconnecting and reconnecting gas lines, venting, and wiring, and ensuring your installation meets local plumbing codes.

Choose Pipecraft Plumbing for Commercial Tankless Water Heating Systems and Endless Hot Water Delivery!


Keep your business running smoothly with reliable tankless water heater installation, maintenance, and repair from the experts at PipeCraft Plumbing in Arvada, CO. Whether you manage a restaurant, salon, laundromat, or other commercial business, you need a steady supply of hot water to serve your customers and clients.

  • Expert sizing and installation of tankless water heaters for maximum efficiency
  • Regular maintenance checkups to prevent scale buildup, corrosion, and other issues
  • Fast and reliable repairs to minimize downtime and keep your business running efficiently

Working with PipeCraft ensures your business has a reliable and efficient hot water system, compliant with local codes and regulations. We offer peace of mind with upfront pricing, easy scheduling, and clear communication. Call PipeCraft today to ensure your business has the hot water it needs to succeed!

Car Wash
Gas Water Heater
Laundromat
Groomer
Hybrid Water Heaters
Commercial Kitchen
Bathrooms/Lav
Salons
Tankless Water Heaters

Navien Tankless Water Heater
Common Problems, Causes, Diagnostics, and Repairs

ProblemPossible Cause(s)Self-diagnostic / Action
No water comes out when the hot water tap is opened.Is the cold water inlet filter clean?
Is an error code displayed on the front panel?
Is the water heater frozen?		Ensure that the shut–off valves on the hot and cold pipes are open.
If an error code is displayed, refer to Navien Error Codes below.
The water from the hot water faucet is cold or turns cold and stays cold.Is the cold water inlet filter clean?
Is the hot water faucet open wide enough draw at least 0.5 gallons of water per minute (GPM) through the water heater?
Is an error code displayed on the front panel?
If there is an external recirculation system installed, is there a check valve on the recirculation return line?		Clean the cold water inlet filter. See user manual Cleaning the Inlet Water Filter and Recirculation Inlet Filter
Open the hot water faucet completely.
If an error code is displayed, refer to Navien Error Codes below.
It takes too long for hot water to reach the fixtures.Are you using the external recirculation mode?Have Pipecraft Plumbing install a recirculation return line from the furthest faucet back to the water heater.
The water is not hot enough.Is the set temperature too low?Check the water heater’s temperature setting. Refer to Adjusting the Water Temperature in the User Manual.
Check for cross plumbing between the cold and hot water lines.
The water is too hot.Is the set temperature set too high?Check the water heater’s temperature setting. Refer to the User Manual Adjusting the Water Temperature


Navien Tankless Water Heater Problems, Causes, Diagnostics, and Error Codes

Error CodeProblemTroubleshooting and Next Steps
E003Ignition failureEnsure that the main gas supply valve is open.
E004False flame detectionEnsure that the electrical cord is properly grounded.
E012Flame lossClean the intake air filter. Refer to the User Manual.
Ensure that the electrical cord is properly grounded.
E016Overheating of heat exchangerClean the cold water inlet filter. Refer to the User Manual.
Flush the heat exchanger. Refer to the User Manual.
E030Exhaust overheating (the water heater shuts down when the flue temperature exceeds 149 °F (65 °C)Clean the cold water inlet filter. Refer to the User Manual.
Flush the heat exchanger. Refer to the User Manual.
E031Overheating of burnerCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E046Abnormal operation: limit controlCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E047Exhaust thermostat: thermistor open or short circuitCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E060Abnormal operation: dual venturiCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E109Abnormal operation: fan motorClean the intake air filter. Refer to the User Manual.
E110Abnormal air pressureEnsure that the exhaust pipe is free of obstructions.
Clean the intake air filter. Refer to the User Manual.
E407Hot water outlet: thermistor open or short circuitCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E421Cold water inlet1: thermistor open or short circuitCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E432Cold water inlet2: thermistor open or short circuitCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E434Abnormal operation: water adjustment valveCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E438Abnormal operation: circulation pump (in case of installed AHU)Check if the circulation pump is operating properly.
E439Abnormal operation: flow sensorCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E441Hot water inlet2: thermistor open or short circuitCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E445Abnormal operation: Bypass mixing valveCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E515Abnormal operation: PCBEnsure that the electrical cord is properly grounded.
E517Abnormal operation: DIP switch settingCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E593Abnormal operation: front panel keyCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E594Abnormal operation: EEPROMCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E615Abnormal operation: input and memoryCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E736Abnormal operation: cascade communicationCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E740Abnormal operation: outdoor temperature sensor (in case of installed AHU)Call Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E760Flushing/service alarmCall Pipecraft Plumbing for routine maintenance 303-478-3829. Have your model and unit serial number.
E762Vent pipe not properly insertedCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E773Using the wrong gasCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E782Abnormal operation: main panel communicationCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E785Abnormal operation: flow switch/ sensor (in case of installed AHU)Call Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E788Abnormal operation: Discrepancy with the gas type on the panel DIP S/W setting and the panelCheck the supplied gas type and match the gas type setting on the panel DIP S/W and the panel.
E53Room A Thermistor Short (only hydro heating)Check the room A thermistor Check wire Call Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.

connection of 12p wire and thermistor wire
E54Current Leak on Gas Valve PowerCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.

Check gas valve Check connection of gas valve wire
E56Less than 0.3gpm of water flow at recirculation mode and hydro heatingCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.

Check flow sensor Check recirculation pump and loop Check connection of 14p wire and flow sensor wire
E57Pump is not connectedCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.

Check wire connection of 8p wire and pump wire Check the pump
E58 / E59No response from ICC moduleCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.
E93Master can't have any data on CAN lineCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.

Check connection of 3p wire and MCU wire Check connection of termination wire and resistor(120Ω)
E94Sub can't have any signal from masterCall Pipecraft Plumbing, 303-478-3829, with the model number, serial number, error codes and description of problem.

Check connection of 3p wire and MCU wire Check connection of termination wire and resistor(120Ω)

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