I would like to have it removed if possible, I am not sure why it is up there but now that @Matt Bacenet brings up the possibility of it also being a CO alarm...it makes sense.I will double check this when I am home later today.If I suspected it to be Carbon Monoxide, would I need to reach out to the Fire Department?

@McKinley Carbone - Scented mailers! 

Are you SURE the property manger's HVAC guy is giving you good advice and you really need a new system-- you don't just need a new blower motor, filter, or to just clean the carbon off the contact thing?

Both the Broker and the employing broker need to be aware of state and local laws that impact the performance of property management duties, which include, but are not limited to, laws pertaining to security deposits, habitability, carbon monoxide alarms, asbestos, lead-based paint, handling of confidential information, zoning and agency."

@Kevin Carbon and @Troy Fisher are hosting a meetup for BP members tonight (Monday, Oct 19) in Lakewood.

I would change them all from oil heat to electric baseboard , Reasons : No oil furnace to clean , repair , or maintain , reduced liability of a oil spill , no chimney to clean or repair , no carbon monixide . the tenants can get budget billing from the electric company , same payments every month. with multible baseboard heaters , its unlikely all will break at once .

I love the Back Bay area, sometimes I ride my  carbon fiber road bike through there.

A smoke and carbon monoxide detector.               

This project, located near Shafter, introduces a cutting-edge technology known as Hybrid Direct Air Capture (HDAC), which simultaneously removes carbon dioxide from the atmosphere and produces water.

What they recommended was carbon straps.