State tank water heaters need standard tank maintenance: annual T&P test, sediment flush, anode rod inspection every 2-3 years. Premier Hybrid heat pump adds air filter cleaning and condensate drain inspection.
Annual checklist — ProLine atmospheric / Power Vent / Direct Vent
- Test the T&P valve — lift handle briefly, verify water discharges, reseat
- Flush the tank — drain 3-5 gallons to remove sediment; full flush every 2 years (annual in hard water)
- Inspect the anode rod — at year 3, then every 2 years. Replace when consumed
- Inspect venting — verify draft on atmospheric; clear PVC termination on power vent
- For power vent: verify fan starts/stops correctly with thermostat call
- Clean the air intake screen on gas units (especially FVIR-equipped models)
Annual checklist — Premier Hybrid heat pump
- All tank tasks above (T&P, flush, anode)
- Clean the air filter on top of the unit — vacuum monthly, replace yearly
- Inspect condensate drain — verify free flow; clear any sediment
- Verify mode setting — typically Hybrid; verify hasn\'t been accidentally changed
- Listen for compressor noise — bearing changes indicate end-of-life approaching
Annual checklist — Sandblaster commercial
Same as ProLine atmospheric plus quarterly anode rod inspection for high-duty commercial applications (restaurants, salons).
Anode rod schedule
| Water hardness | Inspect | Replace |
|---|---|---|
| Soft (<7 gpg) | Year 3, then every 2 years | Year 5-7 |
| Medium (7-11 gpg) | Year 2, then annually | Year 4-5 |
| Hard (>11 gpg) | Annually | Year 3-4 |
Anode rod replacement is the single highest-ROI maintenance task on tank water heaters. See State anode rod page.
Warranty impact
If tank fails and inspector finds heavily-consumed anode rod with no documented replacement, claim can be denied. Keep receipts and dated photos of anode replacements.
Bottom line
Annual T&P + sediment flush + anode inspection. Premier Hybrid adds air filter cleaning. Document maintenance for warranty defense.