We recently installed a 48000 BTU heat pump into an insectory with humidfier etc. and the client requires an indoor temperature of 34 Deg C. and 98% humidity. During the warmer weather we were able to maintain these temps in the room but now that the ambient drops at night to below 7 DEG C the indoor temp is dropping to about 21 Deg C. We recommended installing electric heating to compensate for this but the client is adamant that he doesn't want electric heating as this will increase his electric bill. Does anyone have a solution for this problem.