I am also in Orange County and we have had the heater on every night since January! The phals are in a north facing bay window in the kitchen and yes, right in front of the heater vent. They don't seem to care, got one with two compound spikes and flowering, one growing a spike and another putting out new leaves like crazy...all turgid and green. I guess I'm agreeing with the others that perhaps, alot of hybrid phals aren't as fussy. They may be benefitting from some ambient steam from cooking and washing dishes but, I think it is negligable. They are potted in terra cotta with orchid mix and about 10% sphagnum in the total mix. I water every other to once a week. Actually, I think I'm a pretty lazy orchid grower and they are doing fine...
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