Emerson 768A 815 Hot Surface Ignitor, 80V, Silicon Nitride

As a home owner with a background in construction this was an easy part to replace. Works great

The hot surface ignitor (HSI) is an important part of your gas furnace that can fail. The way the HSI works is that it is heated to a high temperature. When flammable gases come in contact with HSI they ignite and generate heat. How do you know if HSI is working? The HSI heats and when it does it glows. It glows brighter that a 40 watt incandescent lamp filament. And you can see this from the glass hole. If you don't see the glow before the furnace fires up, perhaps this part has failed.I replaced mine as part of preventive maintenance. The last one was nearly 6 years old, still going but the ones before had failed every year or so. Every time it failed it was $300 to the company that replaced it. This time it was much less with the Emerson clone. It took about 10 minutes to get the job done. I have the old one still saved up in case this fails and I have to order another one.All in call happy with the purchase. How long it lasts is another story.

It is a simple item. You can see as soon as you replace it.

Bought this for a Lennox G40UH(X) series furnace and the connectors were NOT a straight fit. This came with a male connector instead of the female pictured (so 1 star down). So I had to cut and replace it with the female connector from my existing filament. Other than that, it worked fine.

Perfect replacement. At this price I bought two just to have an extra one in case.

Read this before you buy. This item is unreliable. It did last 1 month exactly. just one day after the return window closed, It left my family without heating in a very cold day while i was on a business trip. I am not a happy camper

I have a Trane XR80 that was installed new in 2007, I have replaced the capacitor, the main circuit board, a couple other things, and now the igniter. The led was flashing steady so "call to heat" was good but furnace only clicked (both at thermostat and at furnace), I tested the igniter for continuity and had none, I ordered part from amazon and luckily it had next day delivery. Part was the exact replacement not off by a letter or a universal part, it was the exact part, fit perfectly and literally took longed to get into the attic than to replace the part. Turned the furnace on and working like a champ! Little under $30 and no heater for 1 night, thats a big win in my opinion. I would purchase again :-)

Worked as intended

This fixed my gas furnace problem.It replaced my prior ignitor 768A-15 that measured 1.6 k-Ohms, indicating a fault (and it also wasn't working).Before installing I measured a resistance of 16 Ohms.It worked upon turning on my furnace and having the thermostat call for heat, successfully igniting the gas into flames for my furnace.

There was a marking on my existing ignitor, D343692. This ignitor is identical to that, the connector and metal bracket are a perfect fit. I would say it's the equivalent to IGN00145 / D343692. Works in my American Standard (same as Trane) furnace. EDIT: the ignitor failed after 2 months

I bought this as a spare part for my American Standard Freedom 80 furnace. The original ignitor is still working after 11 years but risk of failing could happen soon and at the worst time. This part looks identical to the 2009 original (768A-15) and is also White Rodgers and made in Mexico. (768A-815 is the new number for 768A-15)I seen a few say it failed. If your replacing the ignitor after failure make sure it is the exact right part! There are a few variations in length, watts and voltage (ie: 768A-844 is slightly shorter then 768A-815) Also do not touch the element during install! Not following this will greatly shorten the life.

The old one dead afer 9 years. Order two new ones, received in 5 days. Exactly same size and working fine. Only concern is litte pricing, that is a simple and small, easy to make, but you have no choice.

Works well thus far. Easy to install for those who are not mechanically inclined. Typical life span of this item is 5’ish years. Replace it as part of preventative maintenance.