Oil heat, explained

No heat at 6 a.m. shouldn't require a forum archaeology dig. OilBurnerHelp is 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 with a guide Check your tank level

Troubleshooting guides

In progress

Bleeding an oil furnace after a run-out: what it is, who should do it

Why an oil line airlocks after running dry, what the bleed procedure involves, and the honest line between owner's-manual territory and a service call.

In progress

Furnace fires then shuts off: what flame failure means on an oil burner

An oil burner that lights and dies seconds later is failing flame proving. What the cad cell is doing, what you can check, and why repeated retries are dangerous.

In progress

New oil furnace & boiler prices: what replacement really costs

Installed-price reality for replacing an oil furnace or boiler: equipment tiers, what's in a proper install, efficiency math that actually pays, and the quotes red-flag list.

In progress

Oil furnace not kicking on? Work this list before you call

Why an oil furnace won't start: thermostat, switches, power, oil supply, and lockouts — the checks that are safe to run yourself, in the right order.

In progress

Oil furnace reset button: what it does, when to press it (once), and what a lockout means

What the red reset button on your oil burner actually does, the one-press rule, and what to do when the burner locks out again.

In progress

Oil furnace smells: oil, soot, or smoke — which ones mean trouble now

How to read oil-furnace odors: the harmless first-start whiff, the oil smell that means a leak or misfire, and the soot/smoke situations that end with a phone call.

In progress

Oil furnace troubleshooting: the complete decision chart

The master no-heat decision tree for oil furnaces and boilers: what to check in order, what each symptom means, and exactly where to stop and call a pro.

In progress

Oil furnace tune-up: what's actually on the checklist, and what it costs

The annual oil-heat tune-up demystified: every item a thorough tech performs, what each one prevents, typical pricing, and how to spot a drive-by 'tune-up'.

In progress

Oil tank replacement cost: what drives the price, and when a tank is done

Real-world pricing for replacing a 275-gallon heating oil tank: what's included, what adds cost, removal of the old tank, and the warning signs a tank is on borrowed time.

In progress

Ran out of heating oil? Here's the order of operations

What actually happens when an oil tank runs dry, the diesel stopgap that buys you a weekend, and what restarting after a run-out involves.

Tools & charts

Heating oil tank chart

Stick reading → gallons for the standard 275 vertical tank. Printable.

Coming for the season

Oil usage estimator

Degree-day fuel estimate: how much oil your home burns in a cold snap.

Coming for the season

Nozzle chart & calculator

Master nozzle chart plus GPH × pressure → firing rate.

Why trust this site

Every claim traces to manufacturer documentation, NFPA 31, or EIA data; every page is dated; and every hands-on guide draws a hard line between homeowner-safe checks and licensed-tech work. No recycled content-mill filler, no stock photos — read the methodology.

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