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Emergency Diagnostics & Repairs

  • No hot water
  • Leaking water heater
  • Smelly water
  • Discolored water
Rinnai Water Heater Temperature Control

Error Codes

  • Air/exhaust blockage
  • No Ignition / Flame Failure
  • Condensate trap is full
  • (SS) Service soon
Water Heater Diagnostic and Repair

& Repair

  • Intermittent hot water
  • Temperature changes
  • Cold water sandwich
  • Noisy water heater

Your Experts for Tankless Water Heater Repair in the Denver Metro Area

If you're having problems with your tankless water heater, chances are we’ve diagnosed and corrected the same problem for someone else. Tankless water heaters boast a long lifespan because they were designed for repair, not replacement (like standard tank water heaters). Tankless water heaters are smart, they’ll tell you when something is wrong. When the system senses a problem with water, fuel, or air flow it will alert you with an Error Code. You’ll also sense when it’s time to call us for a repair. Maybe you’ve noticed the water heater sounds like it’s running louder than usual, or the water doesn’t seem as hot. Rest assured, we’ll diagnose the root cause of your problem and recommend the best solution to get you back into Hot Water Now!

Providing high-efficiency tankless water heater diagnostics and repairs to residential and commercial property owners since 2006, Hot Water Now! is the most experienced tankless water heater company in the Denver metro area. We have the years of experience and depth of understanding to repair your tankless water heater. Your tankless system was designed to last 20+ years, call us to provide the repairs to make that happen.

Water Heater Repair Plumber Lakewood CO

What You Need to Know When You Need to Repair Your Tankless Water Heater

Home and office maintenance can be a stressful task, especially when it comes to tankless water heater repair. When you start noticing changes in the performance of your tankless water heater– like error codes, alarms, or worse yet, no hot water–it’s time to take action. We’ve found that almost all problems with tankless water heaters are caused by improper installation, poor water quality, dirt and debris that has built up over years of use, or lack of routine maintenance. In nearly 20 years, we've seen and successfully corrected every conceivable tankless water heating problem. Give us a call, our technicians will get you back into Hot Water Now!

Common Issues with Tankless Water Heaters

  • Scale build-up causing reduced efficiency and capacity
  • Clogged or restricted inlet filters
  • Intermittent flame failures cause by gas pressure problems
  • Blocked or obstructed air inlet or venting
  • Improper condensation
  • Condensation leak
  • Changes in wait times for hot water
  • Variable outlet water temperatures often caused by pressure balance issues
  • Intermittent hot water
  • Water not feeling as hot
  • Error codes or alarm is sounding
  • Unit is running loud or noisy
  • System requires constant resetting

What Do Tankless Error Codes Mean?

Tankless error codes indicate something in your tankless water heater needs to be adjusted or a component needs to be replaced. Each code is unique to the manufacturer and comes with its own explanation of how to diagnose and fix the issue.

For example, Rinnai Error Code 10 refers to problems with airflow, and Rinnai Error Code 25 tells us there’s a problem with the condensate drain. The following links will provide detailed information about common error codes for your brand of tankless water heater:

How Often Does a Tankless Water Heater Require Repair?

A tankless water heater is a reliable and efficient system that will last 20+ years with proper maintenance. The frequency of tankless water heater repairs depends on several factors such as usage, quality of installation, and how well it's maintained. Tankless water heaters that are used extensively, or do not receive routine maintenance, are likely to experience more breakdowns. While we recommend annual maintenance for homes, we recommend more frequent maintenance for high hot water demand applications like restaurants, salons, groomers, laundromats, and hotels.

Navien Water Heater Mobile Control

The most common tankless water heater problems we repair include improper installation (tankless water heaters are high-tech appliances), low gas supply, mineral buildup causing clogging or corrosion in pipes and valves, and debris blocking proper water and airflow. Other potential issues may arise from faulty sensors, clogged filters, corroded valves, or ignition problems (due to dirty burners).

Tankless water heaters are built for long-term use, they were engineered for repair, not total replacement like their tank-type water heater counterparts. If you take good care of your tankless water heater and have it serviced regularly, you can help prevent major problems and extend its lifespan. Our team is factory trained and certified, and in nearly 20 years, we’ve fixed almost every conceivable tankless water heater problem. We’re here to help, give us a call to schedule a technician for a diagnostic visit that will help us determine how we can best keep your endless hot water flowing.

We Repair and Service All Models and Brands of Tankless Water Heaters

Hot Water Now! has specialized in the diagnostic and repair of tankless water heater problems since 2006. Our knowledge and experience enable us to keep tankless water heaters in the Denver metro area running their best. We understand how to properly diagnose and repair older and unsupported models and have a thorough understanding of the technology, features, and best practices required to care for new tankless systems.

We are proud to be a Rinnai ACE Pro™ and the first company in Colorado to achieve Navien Service Specialist status. We also carry credentials as a Rheem ASP (Authorized Service Provider) and boast factory training from Noritz, Bradford White, AO Smith, Bosch, intellahot, State, and other major water heater manufacturers. Tankless water heaters have double the lifespan of traditional tank-type water heaters; our goal is to keep your system operating at its best.

Tankless Water Heater Repair Frequently Asked Questions

Give Us A Call For Tankless Water Heater Repair in the Denver Metro Area and Across the Front Range

When you need tankless water heater service or repairs, turn to Hot Water Now! We are the trusted name for water heater care in the Denver metro area and across the front range.

  • Lakewood
  • Denver
  • Highlands Ranch
  • Littleton
  • Aurora
  • Broomfield
  • Westminster
  • Wheat Ridge
  • Thornton
  • Castle Rock
  • Evergreen
  • Louisville
  • Morrison
  • Longmont
  • Lafayette
  • Commerce City
  • Central City
  • Greenwood Village
  • Castle Pines
  • Edgewater
  • Henderson
  • Federal Heights
  • Lone Tree
  • Northglenn
  • Brighton
  • Erie
  • Superior
  • Larkspur
  • Blackhawk
  • Lakewood
  • Denver
  • Highlands Ranch
  • Littleton
  • Aurora
  • Arvada
  • Englewood
  • Golden
  • Parker
  • Centennial
  • Boulder
  • Conifer

We Have the Answers to All Your Tankless Water Heater Repair and Service Questions

Tankless water heaters offer the luxury of endless hot water and are a great way to save money on your energy bills. Like any appliance, they can require maintenance or repairs to keep them running smoothly. If you find yourself with questions about tankless water heater repair, diagnostics, maintenance, or service, call Hot Water Now! Our team of experienced technicians will get you the answers you need quickly and efficiently! Say goodbye to resets, cold showers, or frustrating error codes, and hello to reliable hot showers. You can trust Hot Water Now! your tankless water heater is in good hands.