Reznor is on a mission to find the three oldest Reznor unit heaters still working. If a contractor finds one of them, they could win up to $3,000.

The contest is open to any licensed HVAC contractor that submits an entry between November 1, 2011 and January 31, 2012.

Here’s how it works, when a contractor is called to replace an old Reznor unit heater, they should take photos of the unit and the serial number. If the heater is the oldest submitted during the contest, you win $3,000. Second and third place also receive prizes of $2,000 and $1,000 respectively.

For complete details and contest rules, go to RezSpec.com/123.