Quote Originally Posted by Frostycold
Hi Fatboy
Rule of thumb for service engineers load testing. I've allways used this formula. Its been tested by design guys & it's been found to be accurate to 10% over. The Formula is

CUBIC CAPACITY of the ROOM/SPACE to be conditioned X 5 in FEET
PLUS the HEAT OUTPUTS of any equipment in BTU's
PLUS 2,000 BTU,s/PERSON

Your answer is in BTU,s 12,000 BTU,s = 1Ton Refrigeration & 1TR = roughly 3.5 KW

CHEERS

Frostycold

Cubic capacity alone is 48 000 Btu ( not 12 000 )
Something amiss here