Boiler Maintenance Checklist
A printable boiler maintenance checklist with a log readings block, burner, controls and venting checks, and a residential hydronic section.
How to use| Item | OK | Needs attention | N/A | Notes |
|---|---|---|---|---|
| Log readings (daily / weekly) | ||||
| Supply ( °F) / return ( °F) | ||||
| Pressure: hot water ( psi) / steam ( psi) | ||||
| Gas: inlet ( in. w.c.) / manifold ( in. w.c.) | ||||
| Flue gas: O2 ( %) / CO ( ppm) | ||||
| Stack ( °F) / efficiency ( %) / draft ( in. w.c.) | ||||
| No alarms or lockouts, burner cycles normally | ||||
| Steam: gauge glass level normal, glass and water column blown down | ||||
| Steam: low-water cutoff tested per manufacturer | ||||
| No leaks at valves, pumps, fittings or relief valve | ||||
| Burner, controls and venting | ||||
| Burner, igniter and flame sensor cleaned / checked | ||||
| Flame failure lockout tested | ||||
| Operating control and high limit tested | ||||
| Low-water cutoff tested (hot water, if fitted) | ||||
| Relief valve: no leaks, discharge piped safely, tested per manufacturer | ||||
| Gas valve and piping leak-checked | ||||
| Vent / flue secure, no corrosion, blockage or spillage | ||||
| Combustion air openings clear, no stored combustibles | ||||
| Heat exchanger / fireside inspected and cleaned | ||||
| Condensate trap and neutralizer cleaned (condensing boilers) | ||||
| Residential hydronic | ||||
| Expansion tank ( psi) / fill pressure ( psi) | ||||
| Fill valve and backflow preventer OK | ||||
| Circulator pumps running quietly, no leaks | ||||
| Air separator and vents working, no air noise in system | ||||
| Zone valves / zone pumps and thermostats respond to calls | ||||
| Outdoor reset and setpoints correct | ||||
| Glycol freeze point ( °F) / pH () if glycol system | ||||
| CO alarm installed and tested near boiler | ||||
How to use
- The boiler template is already loaded, with log readings, burner and controls, and residential hydronic sections.
- Add your business name, logo and the job details, or leave them blank to fill in by hand.
- Edit, add, remove or move items and sections. The preview updates as you type.
- Press Print, or Save as PDF and choose “Save as PDF” in the print window.
- Save a draft to reuse the same checklist on your next job.
About this boiler maintenance checklist
Use it as an annual boiler service checklist, a boiler inspection checklist or a boiler log sheet. Print one sheet per visit or per day and write temperatures, pressures, gas pressure and combustion readings in the blanks. Steam items are marked, and the hydronic section covers expansion tanks, circulators, air elimination and zoning. For furnaces and AC, use the HVAC maintenance checklist.
Follow your local code and manufacturer instructions; this is a general checklist.
Questions
What is included in annual boiler maintenance?
Burner, igniter and flame sensor service, flame failure and limit control tests, low-water cutoff and relief valve checks, gas leak check, venting and combustion air, heat exchanger cleaning, a combustion analysis, and for hydronic systems the expansion tank, circulators and air elimination.
What goes on a boiler log sheet?
Supply and return temperature, pressure, water level (steam), any alarms or lockouts, and daily or weekly checks such as blowing down the gauge glass and testing the low-water cutoff. Print the sheet and fill in the blanks each time.
Does this replace a jurisdictional boiler inspection?
No. Many states require inspections of certain boilers by a commissioned inspector. Follow the manufacturer, your state boiler rules and your insurer.