Classic car garages: consistent temperature for classic cars

Background
A collector of classic cars was keen to find a way of keeping his garage at a constant temperature to reduce the likelihood of deterioration to his vehicles.
Deterioration, through rust and chrome pitting, can be caused from moisture and dust. Any repair or replacement of parts is expensive and any replacement can make originality a concern for collectors.
Solution
Herschel IR3 Advantage(1.95 kW) were installed;
The heaters were attached to the beams above each car which also provides an even temperature.
