This is a fine replacement for a B18099-10. While it's not the exact same board, it works perfectly, and the directions are thorough. As one other reviewer said, don't worry about the square white connector on this new board. The plug into it is included and easy to wire into the thermostat connections. You just have to do a few wire nuts. All covered by the instructions. One thing to be aware of when you are done and fire it back up is that there may be a delay of around 5 to 10 seconds before anything happens, whereas with the old board, mine at least, the draft inducing blower would come on immediately. So I thought the replacement was a failure and was just sitting there pondering what I could have done wrong when it started going. It's been working perfectly since. The problem I was trying to fix was intermittent, where the furnace would fire up, then sometimes shut back down for no apparent reason. I tried a new flame sensor, among other things, but it still kept being flaky. One other suggestion I would make is to move one wire at a time from the old board to the new, rather than disconnecting them all from the old board then connecting them up to the new. Seems way easier to keep them straight doing one at a time. Also would recommend taking several photos of all the wiring before starting, just in case you need to refer back to how it looked originally.

Fixed my "false flame detected" problem on a GMP100-3. Easy install and easy to follow instructions. Better then a service call.

This board works great! My furnace wouldn't lite, so I checked the igniter and found it to be partially failed (excess resistance). I replaced it and had intermittent starting issues. So after further investigation I was able to determine that the original board had likely failed because my igniter had partially failed (excess resistance) causing excess current to be drawn through the relay on the circuit board and (likely) scorched the contacts. Tapping on the old relay allowed the furnace to start, and worked to keep the house warm while we waited for this board.

Followed the instructions, even with some extra time spent organizing the wiring in the furnace it was a 20 min job.

Fit perfectly in my GMP100-3. My OEM board was only 1 year old and would no longer read the signal from the flame sensor. (It might have gotten wet when my AC drain line got plugged this summer.) My system has worked beautifully since I installed this board. I am a DIY guy and had no trouble installing this new board. Everything matched perfectly with the OEM board. The board did include the wires needed for the 9-pin connector. It took me about 20 minutes to install. Very happy with the price vs the OEM board.

I have am Goodman furnace model GMP100-4 with board B18009-06. My board went out when it was 110 degrees. I had this shipped overnight for just $3.99. I was concerned because the photo does not match my board exactly. It also does not show the wire kits as shown on other web sites that sell this board. I have to be honest I did pay $23 dollars more than I could have found it on other web sellers. This seller was the only one that offered overnight shipping. The board did come with the conversion wire set. Don't let the big 9 pin white plug concern you, it is just the conversion for your 24v transformer wires, simple conversion. In my case with a GMP model furnace I did have to cut the jumper wire on the conversion plug, as stated in the instructions. Just make sure your model calls for the cut. The direction can not be more clear as long as you know your furnace model number and board number. I had this board installed from start to finish in 10 minutes in an attic that was well over 100 degrees.