Navien Error Code 110: Causes & Repair in Indianapolis
Navien Error Code 110 indicates the unit has detected an abnormal air pressure condition that may affect combustion performance. Common causes include blocked intake vents, restricted exhaust piping, condensate drainage problems, or faulty air pressure sensing components.
If your Navien tankless water heater is displaying Error Code 110, Hot Water Pros can diagnose the problem and restore reliable hot water service throughout Indianapolis and surrounding communities.
QUICK ANSWER
What Navien Error Code 110 Means
Error 110 means the unit can't maintain proper airflow for safe combustion, so it shuts down. Most cases trace back to the venting or condensate system.
Top 3 causes
Blocked or restricted intake or exhaust vent: snow, ice, leaves or nests
Frozen or blocked condensate line or trap
A failing air pressure sensor or combustion blower
When to call a pro
If 110 returns after the vents are clear, or keeps happening in cold weather, schedule Navien tankless water heater repair. Older unit with repeat errors? Compare the repair with a new tankless water heater.
BEFORE YOU CALL
Safe Things To Check First
Outside vents: Clear snow, ice, leaves or nests from the intake and exhaust openings you can reach safely from the ground.
Condensate line: Make sure the drain line you can see isn't frozen, kinked or clogged.
One reset: Reset the unit once. If 110 comes back, stop resetting and call.
Leave it to a pro: opening the cover, taking apart vent piping and anything involving gas lines.
Seeing 109 instead? Read our Navien error code 109 guide. Still showing 110? Call 317-922-9043 or book online.
What Does Navien Error Code 110 Mean?
Navien Error Code 110 indicates the system cannot maintain proper airflow for safe combustion.
The water heater continuously monitors intake and exhaust performance. When airflow falls outside normal operating parameters, the unit may shut down and display Error Code 110.
Common Causes of Navien Error Code 110
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Blocked air intake vent
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Restricted exhaust vent
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Bird nests or debris in venting
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Snow or ice blocking vent terminations
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Condensate trap blockage
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Frozen condensate lines
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Air pressure sensor failure
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Combustion blower issues
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Improper vent installation
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Excessive vent length
Can I Fix Navien Error Code 110 Myself?
Homeowners can safely check:
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Exterior vent openings
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Snow and ice accumulation
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Leaves or debris near vent terminations
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Obvious condensate drainage issues
However, recurring Error 110 problems typically require professional inspection of venting, airflow, sensors, and combustion components.
Signs You Need Professional Navien Repair
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Repeated Error 110 shutdowns
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No hot water
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Unit starts then shuts off
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Strange blower noises
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Condensate leaks
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Intermittent operation
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Frequent system resets
Many Navien Error 110 Problems Start Outside The Home
Blocked intake vents, exhaust restrictions, frozen condensate lines, and debris accumulation are among the most common causes of Error 110. Ignoring airflow issues can lead to repeated shutdowns and loss of hot water.
Hot Water Pros can inspect your venting system, diagnose airflow problems, and restore proper operation.
Call Today: 317-922-9043
Why Indianapolis Homeowners Choose Hot Water Pros
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Licensed Indiana plumbing contractor
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Experienced with Navien tankless systems
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Same-day service available
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Water pressure diagnostics
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Tankless flushing and maintenance
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Upfront pricing
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Serving Indianapolis, Carmel, Fishers, Westfield, Noblesville, Greenwood, Brownsburg, Whitestown, and Zionsville
We Repair All Major Navien Models
Our technicians service all major Navien tankless water heater models including:
• Navien NPE-240A2
• Navien NPE-210A2
• Navien NPE-180A2
• Navien NPE-S2 Series
• Navien NCB Series
• Navien NHB Series
Navien NPE-240A2
199,000 BTU
Navien NPE-210S2
180,000 BTU
Navien NPE-240S2
199,000 BTU
Navien NPE-180A2
150,000 BTU
Navien Error Code 110 Repair FAQs
What is Navien Error Code 110?
Error Code 110 indicates an air pressure fault or airflow restriction affecting proper combustion.
Can a blocked vent cause Error 110?
Yes. Vent restrictions are among the most common causes.
Will resetting the unit fix Error 110?
Sometimes temporarily, but the underlying airflow issue usually remains.
Should I call a professional for Error 110?
Yes. Most recurring Error 110 conditions require proper venting and airflow diagnostics.
How much does it cost to fix Navien Error Code 110?
Repair costs depend on the cause. We provide upfront pricing before any work begins, and warranty coverage is available on qualifying repairs.
Do you repair Navien Error Code 110 in Indianapolis?
Yes. Hot Water Pros provides Navien Error Code 110 diagnosis and repair throughout Indianapolis and surrounding communities, with same-day service available. Call or text 317-922-9043 to schedule.
Locally Owned & Operated
Hot Water Pros proudly provides Navien Error Code 110 repair throughout Indianapolis, Carmel, Fishers, Westfield, Noblesville, Greenwood, Brownsburg, Whitestown, Cicero, and Zionsville. Our Navien trained technicians can quickly diagnose air pressure and venting problems and restore reliable hot water to your home.
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