Oil heat, explained.The manual for oil-heated homes.
A reference manual for oil-heated homes: what you can safely check yourself, when to stop, and the spec data techs actually use. Dated, sourced, and written to be read on a phone next to the unit.
Start here / what is wrong right now
No heat & won't start
- Furnace won't kick on Power, thermostat, and the first three things to check
- The reset button, press once Why once only, and what a lockout means
- Fires, then shuts off Short-cycling and cad-cell flame faults
- Blowing cold air Burner versus blower, and which is failing
- Ran out of oil What happens to the system, and how to restart
- Bleed the line after a run-out Clearing air from the fuel line, step by step
- The full decision chart The complete no-heat flow, start to finish
Tank & fuel
- Water in the oil tank How it gets there, and what it does to the burner
- Read your tank gauge Float gauges and turning a reading into gallons
- What is Bioheat? Biodiesel blends in plain terms
- Bioheat vs heating oil What changes for your equipment
- Heating oil vs diesel vs kerosene When a substitute is safe, and when it is not
- B20 blend problems Filters, gel point, and older systems
- Oil heat vs gas An honest comparison, no marketing
How it works & reference
Upgrades & components
- Tigerloop de-aerator What it does and when it is worth adding
- Barometric damper Draft control and why it matters
- Oil safety (fire) valve The fusible valve on the fuel line
- Fuel oil filter Types, sizing, and change intervals
- Smart thermostat & the C-wire Compatibility and the common wiring catch
- Hot water from a boiler Tankless coils versus indirect tanks
Lockout & error codes, searchable Type your primary-control code or brand to get the fault and the safe next step. Nozzle chart & firing-rate calculator Cross-reference GPH, spray angle, and pattern, or solve firing rate from inputs. Parts by symptom Start from what the system is doing and narrow to the likely part. Tank charts & oil-usage estimator Convert a gauge or stick reading to gallons by tank size and shape. On OilTankCharts.com
Why trust this site
Every claim traces to manufacturer documentation, NFPA 31, or EIA data. Every page is dated. Every hands-on guide draws a hard line between homeowner-safe checks and licensed-tech work. No content-mill filler.
More about this site →Prefer to see everything at once? Browse every page on the site, grouped by section.
- ASourced to manufacturer docs, NFPA 31, or EIA data.
- BEvery page carries a date.
- CA hard line between safe-to-check and call-a-tech.
- DNo content-mill filler.
https://oilburnerhelp.com/