How to relight a furnace pilot light safely

You can safely relight a furnace pilot light in Severance CO by turning the gas valve to OFF, waiting five minutes for residual gas to clear, setting the thermostat to its lowest setting, holding a long lighter to the pilot orifice while pressing the reset button for 30-60 seconds, and then releasing the button to see if the flame holds. If the flame goes out again within a minute, stop and call a technician - that pattern almost always points to a thermocouple, dirty orifice, or draft problem that needs a real diagnosis.

We have relit hundreds of pilot lights across Severance and the surrounding Weld County towns, and the procedure is genuinely simple when the components are healthy. The trouble starts when homeowners skip the safety steps or misread why the pilot died in the first place. This guide walks through the exact sequence, the tools you need, the mistakes that cause the most callbacks, and the point where DIY stops being the right call.

What a furnace pilot light actually does

A furnace pilot light is a small, continuously burning gas flame that ignites the main burner when your thermostat calls for heat. On older standing-pilot furnaces - most of what we still see in Severance homes built before 2005 - that little flame is the ignition source every single time the burner fires.

Three parts matter for relighting:

• Pilot orifice - the tiny opening where gas exits and the flame sits.
• Thermocouple or thermopile - a safety sensor that generates a small voltage when it senses flame. If it does not sense flame, it shuts the gas valve.
• Reset button (or gas control knob) - the button or knob you press to manually feed gas to the pilot during relight.

If any of those three is compromised, relighting will not stick. That is why we treat a pilot that will not stay lit as a diagnostic problem, not a nuisance.

How do I relight my furnace pilot light in Severance CO?

Relighting a furnace pilot light in Severance CO follows the same six steps whether you have a Carrier, Trane, Goodman, or Rheem standing-pilot unit. Work slowly, and if you smell gas at any point, stop and leave the house.

1. Turn the thermostat to its lowest setting and shut off the furnace. This prevents the main burner from firing while you work.
2. Find the gas control valve on the furnace. It is usually a red or black knob near the bottom of the cabinet with OFF, PILOT, and ON positions.
3. Turn the knob to OFF and wait five full minutes. This is non-negotiable. Five minutes clears any residual gas that could flash when you bring a flame near the pilot.
4. Set the knob to PILOT. Press and hold the reset button (or push the knob in) while you hold a long-barrel lighter or match to the pilot orifice.
5. Keep holding for 30-60 seconds after the flame lights. That gives the thermocouple time to heat up and signal the gas valve to stay open.
6. Release the button and turn the knob to ON. The pilot should stay lit. If it goes out, wait five more minutes and try once more.

If the pilot holds on the second attempt, restore your thermostat and listen for the main burner to fire within a minute or two. If it does not, the issue is upstream of the pilot - often the thermostat or control board - and that is a job for a technician.

For homeowners who would rather not handle gas components themselves, our Furnace Pilot Light Repair Severance CO service covers the full relight, thermocouple test, and orifice cleaning in a single visit.

Is it safe to relight a furnace pilot light in Severance?

Yes - relighting a pilot light is safe when the furnace is otherwise in good condition, you follow the five-minute wait, and you never bypass the thermocouple or use an open flame near a gas leak. The risk is not the relight itself. The risk is doing it on a furnace with a cracked heat exchanger, a blocked flue, or a slow gas leak you have not noticed.

Before you touch the gas valve, check three things:

• Smell. Any rotten-egg odor means leave the house and call your gas utility from outside.
• Flue and vent. If the metal flue pipe is disconnected, rusted through, or blocked, do not relight. Carbon monoxide can back into the home.
• Moisture or soot around the burner. That often signals incomplete combustion - a combustion analyzer test is the only way to know for sure.

If everything checks out, relighting is a five-minute job. If anything looks off, schedule a Furnace Safety Inspection Severance CO before you run the furnace again. We test for carbon monoxide, check the heat exchanger, and verify the flue is drafting correctly.

Why does my pilot light keep going out in Severance Colorado?

A pilot light that keeps going out in Severance Colorado is almost always caused by one of five things: a failing thermocouple, a dirty pilot orifice, a draft from a nearby return or door, a bad gas valve, or a flame sensor that has drifted out of position.

Severance sits on the eastern edge of the Front Range, and the winter wind here is not gentle. We get gusts that push cold air into exterior furnace closets and down flues, and that alone can snuff a weak pilot. Homes in the newer subdivisions off Weld County Road 74 tend to have tighter envelopes, which means return-air drafts near the furnace are more common than people expect.

Here is how the five causes break down:

• Thermocouple (most common). They wear out. A thermocouple that used to generate 30 millivolts may now produce 12, which is not enough to hold the gas valve open. Replacement is inexpensive - usually $150-$280 installed in 2026 pricing.
• Dirty orifice. Dust, spider webs, and rust flakes block the tiny opening. Cleaning is a 20-minute job with the right torch tip cleaner.
• Draft. A return grille or door too close to the furnace pulls the flame sideways. Repositioning the flame or adding a draft shield fixes it.
• Bad gas valve. Less common, more expensive. A new valve runs $350-$650 installed depending on the furnace.
• Misaligned flame sensor. The pilot lights but the sensor does not see it, so the valve closes. Adjustment is quick; replacement is not.

If your pilot goes out more than once a season, get it looked at. Repeated relights are a symptom, not a fix. Our Furnace Repair Severance CO team diagnoses the root cause in one visit and carries the common parts on the truck.

Common mistakes to avoid

The mistakes we see most often during pilot relights are all preventable, and two of them are genuinely dangerous.

• Skipping the five-minute wait. This is the number one cause of flash fires during a DIY relight. Gas needs time to dissipate. Five minutes, every time.
• Using a short lighter or a match held by hand. Use a long-barrel utility lighter. Your fingers should never be inside the burner compartment when the pilot lights.
• Holding the reset button for two seconds and letting go. The thermocouple needs 30-60 seconds of flame contact to generate enough voltage. Short holds guarantee a failed relight.
• Bypassing the thermocouple. Taping it down or wedging the button is how people cause gas leaks. Never do this.
• Relighting after a flood or water event. If the furnace got wet, the control board and gas valve need to be inspected before any flame is introduced.
• Ignoring a yellow or orange pilot flame. A healthy pilot is blue with a slight yellow tip. A fully yellow flame means incomplete combustion - call a technician.

One more: do not relight a pilot on a furnace that has been tagged out by a utility or technician. That tag means someone found a condition that makes operation unsafe.

When to call a professional

Call a professional if the pilot will not stay lit after two attempts, if you smell gas, if the flame is yellow, if the furnace has been flooded, or if the pilot goes out more than once a month. Those are the five triggers we tell every homeowner to treat as stop signs.

We also get called for the in-between cases - the pilot lights, but the main burner never fires. That is usually a thermostat, control board, or gas valve issue, and it needs a multimeter and a wiring diagram, not a lighter.

Severance Furnace Repair Pros handles pilot relights, thermocouple replacements, and full furnace diagnostics across Severance and the surrounding towns. We show up with the parts, test the fix, and confirm the burner fires before we leave. If you are in one of the neighboring communities like Furnace Repair in Windsor, we cover that area too - same crew, same response window.

For homeowners who want to stop relighting altogether, a Furnace Tune-Up Severance CO each fall catches the thermocouple and orifice issues before the first cold snap. Most pilot failures we see in January were visible in October.

Frequently Asked Questions

How do I relight my furnace pilot light in Severance CO?

Turn the gas valve to OFF, wait five minutes, set the valve to PILOT, hold the reset button while lighting the orifice with a long lighter, keep holding 30-60 seconds, then release and turn the valve to ON. If the flame does not hold after two tries, call a technician.

Is it safe to relight a furnace pilot light in Severance?

Yes, when there is no gas smell, the flue is intact, and the furnace has not been flooded. The five-minute wait and a long-barrel lighter are the two safety steps that matter most. Any yellow flame or repeated outage means stop and call a pro.

Should I call a pro to relight my pilot light in Severance?

Call a pro if the pilot will not stay lit after two attempts, if you smell gas, if the flame is yellow, or if the pilot goes out more than once a month. A standard relight is a DIY job; a repeat failure is a diagnostic job.

Why does my pilot light keep going out in Severance Colorado?

The usual causes are a worn thermocouple, a dirty pilot orifice, a draft from a nearby return or door, a failing gas valve, or a misaligned flame sensor. Front Range wind and tight new-build envelopes make drafts more common here than in older housing stock.

How much does a pilot light repair cost in Severance?

Typical 2026 pricing in this area runs $150-$280 for a thermocouple replacement, $180-$320 for a pilot assembly cleaning and relight, and $350-$650 if the gas valve needs replacing. Diagnostic fees are usually credited toward the repair.

Get help with Furnace Repair in Severance

If your pilot will not hold, your burner will not fire, or you would rather have a technician handle the gas side of the furnace, we can be at your door today. One call gets you a diagnosis, a clear price, and a working furnace.

Call Severance Furnace Repair Pros at (970) 1234567 for same-day pilot relight and furnace repair across Severance and Weld County.