Most new furnaces don't have pilot lights anymore

No. The vast majority of furnaces made in the last 15 to 20 years use electronic ignition instead of a standing pilot light. A pilot light is a small flame that burns continuously, waiting to ignite the main burner when heat is needed. Electronic ignition systems light the burner only when the thermostat calls for heat, then shut off when the temperature is reached.

If you're replacing an older furnace, you'll almost certainly get one without a pilot light. The shift happened gradually through the 1990s and 2000s, and by now it's the industry standard. Some high-end or specialty models may still offer pilot light options, but you have to search for them.

Key Takeaways

  • Electronic ignition replaced pilot lights in most furnaces starting in the 1990s and is now standard in all major brands.
  • Electronic systems save gas because they don't burn fuel continuously, lowering your heating bill by 5 to 15 percent compared to pilot light models.
  • Electronic ignition requires electricity to operate, so your furnace won't heat if the power goes out, whereas a pilot light furnace can still produce heat.
  • If your furnace has a pilot light, it's likely 20 or more years old and may be nearing the end of its service life.

Why manufacturers switched to electronic ignition

The main reason is fuel efficiency. A pilot light burns continuously, even in summer when you don't need heat. That constant burn wastes gas. Electronic ignition systems use a spark or hot surface to light the burner only when needed, then shut down completely. Over a heating season, this difference adds up.

The second reason is cost. Once electronic ignition became reliable and cheap to manufacture, it cost less to build than maintaining a pilot light system. Manufacturers could pass some of that savings to customers, or keep the price the same and improve their margins.

A third factor was environmental regulation. As states and the federal government tightened efficiency standards for heating equipment, furnaces with standing pilots couldn't meet the new thresholds. Manufacturers had to move to electronic systems to stay compliant.

How much you save with electronic ignition

A standing pilot light uses a small but steady amount of gas year-round. In heating season, that's a minor part of your total fuel use. But in spring, summer, and early fall, when you're not running the furnace, the pilot is still burning. Over a full year, this can add 5 to 15 percent to your heating bill, depending on how long your heating season is and how efficient the rest of the furnace is.

If you replace a 25-year-old furnace with a pilot light, switching to a new electronic ignition model will lower your heating costs noticeably. The exact savings depend on your local gas rates, how often you run the furnace, and the efficiency rating of the new unit. A contractor can estimate your savings based on your current bill and the AFUE (Annual Fuel Utilization Efficiency) rating of the new furnace.

The tradeoff: electricity dependence

Electronic ignition systems need electricity to work. A pilot light furnace can still produce heat during a power outage because the pilot stays lit and can ignite the burner. With electronic ignition, no power means no heat, even if you have gas flowing to the unit.

For most homeowners this is not a problem—power outages are rare and usually short. But if you live in an area with frequent or extended outages, or if you want a furnace that works during emergencies, a pilot light model may be worth seeking out. Some newer furnaces have battery backup systems that keep the ignition working for a limited time during an outage, though these are not standard.

What to expect if you buy a new furnace

Every furnace from Lennox, Carrier, Trane, Rheem, York, and other major brands now uses electronic ignition as the default. You won't see a pilot light option in their standard product lines. If you want a pilot light furnace, you would need to special-order an older model or find a used unit, neither of which is practical or cost-effective.

When a contractor installs your new furnace, they'll show you how to use the thermostat and explain the electronic ignition system. There's no pilot to light or adjust. If the furnace won't start, the issue is usually a thermostat setting, a tripped breaker, or a gas supply problem—not a pilot that blew out.

Signs your current furnace has a pilot light

If you can see a small blue flame inside your furnace when you open the access panel, you have a pilot light. The flame is usually about the size of a match tip and burns continuously. You may also smell a faint gas odor near the furnace, which is normal for a pilot light system.

Another sign is age. Furnaces made before 2005 are very likely to have a pilot light. Furnaces made after 2010 almost certainly have electronic ignition. If your furnace is between those dates, check the manufacturer's label or ask a contractor to confirm which system you have.

Maintenance differences between the two systems

A pilot light furnace needs occasional maintenance to keep the pilot burning cleanly. The pilot tube can get clogged with dust or debris, causing the flame to go out. You may need to relight it by hand or have a technician clean it. Electronic ignition systems have fewer moving parts and less to maintain, though they can develop problems with the ignition sensor or spark electrode over time.

Both types need annual inspection and filter changes. The difference is that electronic systems are generally more reliable and require less hands-on troubleshooting. If something goes wrong with electronic ignition, it usually requires a technician to diagnose and repair.

Frequently Asked Questions

Can I convert my old pilot light furnace to electronic ignition?

Not easily. The conversion would require replacing the burner assembly, control board, and ignition components—essentially rebuilding the furnace. At that cost, you're better off replacing the entire unit with a new furnace that already has electronic ignition built in.

What happens if the power goes out and I have an electronic ignition furnace?

The furnace will not produce heat until power is restored. If you want heat during an outage, you'll need a backup source like a wood stove, space heater, or generator. Some newer furnaces have battery backup options, but they're not standard and add to the cost.

Is electronic ignition more reliable than a pilot light?

Yes, generally. Electronic systems have fewer parts that can fail and don't require manual relighting. Pilot lights can blow out from drafts or need cleaning. However, electronic ignition sensors can wear out or malfunction, and repairs usually require a technician.

Do I need to do anything special to maintain electronic ignition?

No. Just change your furnace filter every one to three months and have a professional inspect the furnace annually. The ignition system itself requires no routine maintenance unless a problem develops.

Are there any furnaces still made with pilot lights?

Very few. Some specialty or commercial models may still offer them, and you can find used pilot light furnaces, but new residential furnaces from major manufacturers all use electronic ignition. If a pilot light is important to you, ask a contractor about older stock or discontinued models.