If you need to replace an old water heater, consider a Navien tankless water heater in Boulder, CO. A Navien water heater installed by our plumbers at TYCO Plumbing is an excellent long-term investment. Many Navien water heaters have the ENERGY STAR label, which makes them eligible for rebates and tax credits. The operating costs of an on-demand water heater are lower, and these systems have long life spans, too. Those benefits result in a water heater that costs less to own over its working lifetime.
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Navien Tankless Water Heaters in Boulder, CO
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Energy-Efficient Navien Tankless Water Heater
Is the installation of a Navien tankless water heater in Boulder worth it? Yes, absolutely. While tankless systems do cost more to purchase and install, they save money in the long term. The other advantage is that you’ll enjoy a virtually unlimited supply of hot water. The days of running out will be a thing of the past.
Navien specializes in fuel-burning water heaters. Its most popular models burn natural gas. If you lack natural gas access, you can choose a unit that burns propane or fuel oil. These units do require an electrical connection despite being fuel-based. They use the electricity for the ignition system, the LCD display, and smart features, if applicable.
The industry measures water heater efficiency using the Uniform Energy Factor (UEF). The higher the UEF, the more efficient the water heater is. In other words, it will be cheaper to operate. UEF for a traditional fuel-burning tank water heater is between 0.54 and 0.72. Noncondensing gas water heaters generally have a UEF of at least 0.80. Condensing tankless water heaters usually have a UEF of at least 0.85. Two of Navien’s most popular models have a UEF of 0.95 and 0.96.
A non-condensing water heater is a traditional water heater. Non-condensing means that the system loses a certain amount of heat energy in the gases it exhausts. Condensing systems prevent much of that loss. They use a second heat exchanger to condense the water vapor in the gases prior to exhausting them. The resulting moisture drains away. What’s left is heat energy that the system uses to help heat the water.
What about mounting your Navien water heater? You have a wide range of options, including an outdoor install. Installing outdoors can avoid any upgrades you may otherwise need to your plumbing. Indoors, we can install it on a wall in your water heater closet, which you can then repurpose. We often install Navien water heaters in garages and attics as well.
There are many benefits to investing in a Navien water heater:
- High flow rate
- High energy efficiency
- Long equipment life span
- Long and robust warranty coverage
Boulder’s Navien Water Heater Experts
Our team of plumbing professionals at TYCO Plumbing has served Boulder homeowners since 2016. We are a proud Navien Certified Contractor, and for installations, we offer financing on approved credit. We provide industry-leading warranties with our water heaters and back our work with our own guarantees. Our team also prides itself on excellence in customer service and care. That approach has earned us BBB accreditation with an A+ rating. It has also earned us a Top Rated Local award and Top Rated and Elite Service recognition from HomeAdvisor.
Would you like to upgrade your home with an instantaneous water heating system? Contact us at TYCO Plumbing today to discuss installing a Navien tankless water heater in Boulder.
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Frequently Asked Questions
How do I size a Navien tankless water heater for a Colorado home with multiple bathrooms?
Sizing comes down to your peak hot-water demand and how cold your incoming water can get, especially in winter. A plumber will look at how many fixtures you may run at once (showers, laundry, dishwasher), estimate flow needs, and match the unit’s output to your household habits. In Boulder County, getting the sizing right helps avoid lukewarm water when multiple taps are on.
Why does it take longer to get hot water at the faucet after switching to tankless?
Most of the wait time is usually the plumbing distance, not the heater. Hot water still has to travel from the unit to the fixture, so far-away bathrooms can feel slower. Options like a recirculation setup, better pipe insulation, or a smart recirculation schedule can reduce the delay. TYCO Plumbing can help you compare solutions that make sense for your home layout without overcomplicating the system.
What can cause temperature swings or “bursts” of hot and cool water from a tankless unit?
Common causes include mineral buildup inside the heat exchanger, a dirty inlet screen, or a plumbing crossover where cold and hot mix through a fixture. It can also happen when the hot-water demand is very low and the system is constantly trying to stabilize. If the issue is repeatable at multiple fixtures, it’s worth having a technician check the unit and the plumbing so you can get consistent hot water again.
How often should a Navien tankless water heater be flushed in Boulder County?
A practical rule is to plan on service about once a year, and sooner if you notice signs of scaling like reduced hot-water flow, noisy operation, or inconsistent temperatures. Flushing typically requires isolation valves and a small pump to circulate a cleaning solution safely. If you’re not sure whether your setup is service-ready, TYCO Plumbing can inspect the connections and recommend a simple maintenance schedule for your area.
What should I do if my Navien tankless water heater shows an error code or shuts off?
Start with the basics: confirm the unit has power, make sure the gas shutoff valve is fully open, and check that the air intake and exhaust areas are not blocked. If the code returns, avoid repeated resets and schedule service, since error codes can point to airflow, ignition, sensor, or overheating issues that need proper testing. A licensed technician can diagnose the root cause and verify safe operation.
Do high-efficiency tankless water heaters need special venting or a condensate drain?
Many high-efficiency systems use specific approved vent materials and sealed-combustion venting rules, and some configurations also require a condensate drain route. In colder Colorado weather, proper vent termination placement and freeze-aware drainage details matter. For Boulder and nearby Front Range homes, a pro can confirm the venting path, clearances, and drainage approach so the system runs safely and reliably.
Is it normal for hot-water pressure to drop when several fixtures run at the same time?
A tankless unit can only heat up to its maximum capacity at once, so heavy simultaneous use can feel like reduced performance. That said, pressure issues are often caused by plumbing restrictions like clogged aerators, a dirty inlet screen, or partially closed shutoff valves. If you’re seeing pressure drops in specific areas of the home, TYCO Plumbing can test flow and pinpoint whether the issue is the heater, the piping, or the fixtures.
How can I protect a tankless water heater from freezing during Colorado cold snaps?
Freeze risk usually comes from exposed piping and unheated locations like garages or exterior walls. Keep the unit powered so built-in protections can run, insulate exposed water lines, and make sure the area around the heater stays reasonably protected from wind and extreme cold. If you travel often or your setup is in a colder spot, ask a plumber to walk you through a safe drain-down plan for extra peace of mind.
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