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Archive for the 'HVAC' Category

(Chronologically Listed)

Using the Induction Heater – Removing a stuck fan


One of the banes in the lives of HVAC and maintenance mechanics is the removal of corroded, rusted in place fans, pulleys and other objects from the shafts they’re mounted on.  Gear pullers often do irreparable damage and acetylene torches can often overheat and warp.  Induction heat is perfect for this application. I’m scrapping an […]

Posted by neonjohn on October 1st, 2014 under Electronics, HVAC, Induction heating, Misc | Comment now »

Why I hate Heat Pumps


Well, maybe that’s a bit of an overstatement but when something fails by design when you really need it, it tends to foment hate and discontent. This morning I woke up and something didn’t seem quite right.  I looked at my projection weather station image on the ceiling and noted that it was 7 degrees […]

Posted by neonjohn on January 21st, 2009 under HVAC, Tellico | 7 Comments »

Dissection of a Furnace Fan Motor


or Why There is so Much BS on the Net. In this post I’m going to take you through a guided tour of the common everyday fan motor that drives the fan in just about every domestic air conditioner, furnace or heat pump. At the same time I’m going to demonstrate why there is so […]

Posted by neonjohn on October 1st, 2008 under Cool Stuff, Energy, HVAC, Misc, Philosophy | 8 Comments »

It Always Happens at Night – Part Deux


I’ve returned home from my trip, finished the repair of The Enemy and now have a few more interesting photos to display. I did get quite a shock while in town. A jug of R22 now costs over $200!!! Outrageous. It wasn’t that long ago that a jug cost only about $20. Anyway Here is […]

Posted by neonjohn on June 10th, 2008 under HVAC | Comment now »


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