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Tankless Water Heater Inspection Checklist
Drain and shut off exterior faucets/spigots.
- Leaks: Check for any visible leaks around the unit, pipes, and connections. Look for signs of water damage on the floor or ceiling below the unit.
- Corrosion: Inspect the unit for signs of rust, pitting, or other forms of corrosion.
- Physical Damage: Check for dents, cracks, or other physical damage to the unit.
Safety Checks
Gas Lines (for gas units):
- Check for leaks: Inspect gas lines for any signs of leaks (gas odor, hissing sounds).
- Proper ventilation: Ensure adequate ventilation for gas combustion.
Electrical Connections (for electric units):
- Check for loose wires or damaged insulation.
Pressure Relief Valve (T&P Valve):
- Test: Manually lift the T&P valve lever slightly to release a small amount of water.
- Inspect: Check for any signs of leaks or corrosion around the T&P valve. Ensure the discharge pipe is properly installed and directed away from the unit.
Operational Checks
- Water Flow: Check for adequate hot water flow at multiple fixtures simultaneously.
- Temperature: Ensure the unit is providing consistent hot water at the desired temperature.
- Error Codes: Check for any error codes displayed on the unit’s control panel.
Maintenance Checks
Clean or Replace Water Filters:
- Frequency: Clean or replace water filters as recommended by the manufacturer’s instructions (typically every 6-12 months).
Clean Air Filters (for gas units):
- Frequency: Clean or replace air filters as recommended by the manufacturer’s instructions.
Descaling (if applicable):
- Frequency: Descale the unit to remove mineral buildup (frequency varies depending on water hardness and manufacturer recommendations).
- Method: Follow the manufacturer’s instructions for descaling procedures.
Important Notes:
- Safety First: Turn off the power or gas supply to the unit before conducting any inspections or maintenance.
- Professional Help: For any major concerns, descaling procedures, or if you are unsure about any aspect of this inspection, consult a qualified plumber or a technician certified to work on tankless water heaters.
Reviews
What Our Customers Are Saying
I can't recommend these guys enough! I had an absolute emergency with my water heater and was worried about finding someone for a water heater replacement in Mesquite near Town East Mall on such short notice.
They managed to get a crew out and finish the same-day installation before I even...Check Out More
Clifford Sutton
Very impressed with the responsiveness and work done. Had a pipe on the back patio burst in a freeze. Reached out to James Armstrong Plumbing at 6am and by 10 am. By 1 pm the pipe was repaired, faucet replaced and brick reset. James and Clifford were...Check Out More
Frank Karlen
James is honest and honors warranties. Very dependable. We had a leak, he had to cut a hole in our floor to get to it and stuck with it until the leak was found and fixed. We were looking for someone trustworthy and found our guy in James.
James Jones
I started a DIY plumbing project that I could not finish on time. I called James Armstrong Plumbing and they helped me out. Recommended. One more thing, he is a good man.
Rupert Lee
James came promptly and fixed the issue. He is professional and courteous and worked with my schedule. Thank you, James!
Mariam Abdo
SERVING COMMUNITIES ACROSS DALLAS–FORT WORTH
- Allen
- Anna
- Arlington
- Azle
- Balch Springs
- Bedford
- Benbrook
- Blue Mound
- Blue Ridge
- Burleson
- Celina
- Colleyville
- Combine
- Coppell





