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Certified local boiler service

Navien Boiler Repair Specialists

Find experienced technicians for Navien condensing, combi, and high-efficiency boiler systems.

Local coverage

Find Navien Repair in Your City

Denver84 contractorsChicago104 contractorsPhiladelphia69 contractorsMinneapolis75 contractors

Don't see your city? Use the search above to find specialists in any location.

Training and experience

What Navien Certification Means

Highest level

Service Specialist

Trained to diagnose and repair Navien boiler and water-heating systems.

Tier 2

Factory Trained

Has completed manufacturer training for Navien equipment and controls.

Tier 3

Advanced Specialist

Experienced with complex installations, controls, and hydronic troubleshooting.

Know the warning signs

Common Navien Boiler Problems

Low water pressure

E302E351

What you notice: The boiler shuts down or heat is inconsistent.

What causes it: Low system pressure, a leak, or a failed pressure sensor can interrupt circulation.

What to do: Check the pressure gauge, but call a technician before repeatedly resetting the system.

Estimated cost: $150–$450

Ignition or flame failure

E003

What you notice: The boiler attempts to start but does not produce heat.

What causes it: Blocked intake or exhaust, gas supply issues, or an ignition component may be at fault.

What to do: Do not work on gas components; have a qualified technician diagnose the failure.

Estimated cost: $180–$650

Top local matches

Top Rated Navien Specialists

Answers for homeowners

Frequently Asked Questions

How often should a Navien boiler be serviced?

Annual professional service helps maintain safe operation, efficiency, and warranty documentation.

Can any heating contractor repair a Navien boiler?

Choose a technician with documented Navien experience, especially for condensing systems and proprietary controls.

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