I am having the same problem as Judy. The ceilings in the upstairs bedrooms are not producing any heat. Unlike Judy's situation, the radiant heat is very expensive here in San Diego and we're experiencing an unusually cold winter.
I'm in an older condo with no attic. Should I invest in a new heating system ( about $10,000), use portable heaters(scary) or are there contractors who can repair this system? I can't find any in the San Diego area.