Back on topic of heaters and smoke detectors.  Which type of smoke detector should you have???  There are two types - 
Ionization, which  is generally more responsive to flaming fires -  and  
Photoelectric smoke detection is generally more responsive to fires that begin with a long period of smoldering.  I think best to have one of each!!  And they do make combination Ionization/Photoelectric smoke detectors.
http://www.nfpa.org/safety-information/for-consumers/fire-and-safety-equipment/smoke-alarms/ionization-vs-photoelectric