We owe those Heat Pump pioneers!

Heat Pump History by Bill Holladay

From Engineering & Science Monthly (October, 1948)

Take a look at mechanical history!

We celebrate GHPs (geothermal heat pumps) as the most efficient thermal transfer equipment known.  But the grandfathers of GHPs go back to primitive compressor experiments prior to 1900 by VonRittenger.  In this Engineering & Science Monthly article in 1948, then cutting edge refrigeration veteran Bill Holladay explains the heat pump concept, “What it is, what it does, and what it may do someday.”  We’ve come so far since then!

—Bill Martin