The pure gasoline furnace has been frequent in houses because the Forties. Till pretty just lately, these furnaces used a standing pilot gentle to ignite the gasoline burners at first of their heating cycle. The pilot gentle would keep a small flame all through the heating season so each time gasoline flowed to the burners, the pilot would instantly ignite them.
There are nonetheless furnaces in use right now which have standing pilot lights, however they’re changing into rarer annually. Most pure gasoline furnaces have modified over to utilizing digital ignition methods as an alternative. The rationale for the change is to make furnaces extra energy-efficient in addition to extra dependable. A pilot gentle that burns for the entire winter is a further drain on pure gasoline, whereas an digital ignition system solely wants to make use of energy in the meanwhile it ignites the burners.
How does digital ignition work? There are two basic kinds of digital ignition methods present in furnaces: sizzling floor ignition and intermittent pilots.
Sizzling Floor Ignition
That is the most typical kind of ignition in trendy furnaces, and it really works equally to an incandescent gentle bulb. An electrical present runs by means of a steel probe positioned over the burners, and the present causes the probe to show sizzling the identical method filaments in a lightweight bulb glow sizzling when present runs by means of them. When the ignition system is sizzling sufficient, gasoline begins to stream to the burners and the probe lights them. The ignition system then shuts off.
Intermittent Pilot
Because the identify implies, this method makes use of a pilot gentle—however it’s doesn’t keep lit for lengthy. An electrical spark causes the pilot gentle to return on solely when there’s a requirement for heating. First, the gasoline line to the pilot meeting opens, then an electrical spark ignites the pilot. After a flame sensor detects the pilot gentle is burning, gasoline is allowed to stream to burners the place the pilot gentle ignites them. As soon as the burners are on, the gasoline to the pilot lights shuts off.
In each kinds of digital ignition methods, there are additional security steps to forestall gasoline from flowing to the burners when there’s nothing to ignite them. This makes digital ignition methods safer typically than older standing pilot lights.
Ought to You Substitute a Furnace With a Standing Pilot Gentle?
It is a good query, and it depends upon how previous a furnace you’ve gotten. As a result of pilot gentle furnaces are much less frequent right now, the furnaces which have them are often greater than 10 years previous. We advocate you think about changing your furnace if it’s older than 15 years. You’ll not solely profit from having an digital ignition system, you’ll have a furnace with superior power effectivity and a protracted life forward of it.
It doesn’t matter what furnace service in Fresno, CA you want—repairing a damaged digital ignition system, changing an older furnace—you possibly can rely on our technicians to get the job achieved proper each time.
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