Barns: Don’t Turn Up the HeatBy Kentucky Equine Research Staff · December 7, 2010
While humans find refuge in insulated houses during the winter, healthy horses usually get along very well in unheated barns with good ventilation, even when the air temperature is quite low.
Frequent air exchange keeps airborne dust and mold particles dispersed and prevents the accumulation of ammonia in stalls. If horses are kept dry and have plenty of hay intake, they will stay comfortably warm.
Note: Very old horses, very young foals, ill horses, and those that are extremely underweight may need more protection from low temperatures, but even in those cases, barns should not usually be heated or airtight.