Circuit Board Part # for Lennox Furnace

Old 09-04-17, 06:39 AM
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Smile Circuit Board Part # for Lennox Furnace

I have a Lennox Furnace Model # G40UH-48C-110-07. I would like to purchase a replacement circuit board to have on hand in case mine fails on the coldest day of winter. Furnace is almost 13 years old.
I cannot read the part number on existing board except it does say "SURELIGHT" I would like to buy a board that I can change out by changing wire from old board to new board one at a time.

Can someone point me to the board I need?
Old 09-04-17, 10:54 AM
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Welcome to the forums.

It would be extremely rare to get the same exact board as a replacement. The boards are constantly undergoing improvements and changes. There is a part number on the board. Sometimes it's on a paper sticker.

The current replacement board for that furnace is 30W25.
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