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General Aire 727-58 Transformer 24V

SKU#: 72758
List Price: $23.10 Sale Price: $19.25
Product Description

The 727-58 transformer is a device that reduces the incoming electrical current from 120 to 24 volts AC, which is the proper voltage for the humidifier circuit. These transformers are built to perform effectively year after year, but may eventually fail, likely causing the humidifier to stop working. If this happens, the transformer should be replaced immediately. This part fits humidifier models 40, 45, 65, 81, 709L, 709LH, 1040L, 1040LH, 1042DM, 1042DME, 1042L, 1042LH, 1099, 1099L, 1099LH, 1099R, SL-16.

This component is also known as part number: 7118

The manufacturer is sometimes referred to as General Filters, General Air but is correctly spelled GeneralAire®.


1 5/8 (inches)
2 1/2 (inches)
1 3/5 (inches)
9 (oz)
120 VAC

Product Reviews

Add your review of this product Global rating: 5.00 from 8 reviews
Feb 25, 2018
Review by ( )

Fair Price. Quick delivery. Would purchase again.

Jan 18, 2018
General Aire 727-58 Transformer 24V by Pavel ( )

So far so good!

Dec 12, 2016
Transformer by Donald Hankins (St. Clair Shores Mi US)

I ordered a transformer for my general humidifier in which I was told it would take 5-7 days to receive it And I was very surprised to see my part delivered in just 3 days. I wired it in just 2 min. and my humidifier was up and running. I will always be a fan.

Jan 4, 2016
transformer by Dave Billig (Omaha NE US)

Perfect replacement that is brand new for a unit that was far from new! Very pleased that the new part was easy to install.

Nov 21, 2013
Mr Hennessy by Ed Hennessy (kansas city MO US)

The part's wires were 2 inches shorter than the original -

Feb 15, 2013
"General Aire 727-58 Transformer 24V by Keith Bianchini (Rochester Hills MI US)

I am the homeowner and piece by piece I have been trying to repair this humidifier. The expert service I received was excellent and very helpful from your staff. I finally got it working.

Jan 4, 2013
review by Jim Troxell (Peculiar MO US)

part was just as described on website was direct replacement for the original parts.

Jan 4, 2011
Works fine by (Dexter MI US)

We used this transformer to replace a bad one in our humidifier (the kind that is attached to furnace). Seems to work just fine. -S


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