initial

code/game/machinery/_machinery.dm

@@ -139,6 +139,9 @@ Class Procs:
 	var/market_verb = "Customer"
 	var/payment_department = ACCOUNT_ENG
 
+	///Boolean on whether this machines interact with atmos
+	var/atmos_processing = FALSE
+
 /obj/machinery/Initialize(mapload)
 	if(!armor)
 		armor = list(MELEE = 25, BULLET = 10, LASER = 10, ENERGY = 0, BOMB = 0, BIO = 0, RAD = 0, FIRE = 50, ACID = 70)

code/game/machinery/computer/atmos_control.dm

@@ -73,11 +73,11 @@
 
 /obj/machinery/air_sensor/Initialize(mapload)
 	. = ..()
-	SSair.atmos_machinery += src
+	SSair.start_processing_machine(src)
 	set_frequency(frequency)
 
 /obj/machinery/air_sensor/Destroy()
-	SSair.atmos_machinery -= src
+	SSair.stop_processing_machine(src)
 	SSradio.remove_object(src, frequency)
 	return ..()
 

code/game/machinery/spaceheater.dm

@@ -222,7 +222,7 @@
 			usr.visible_message("<span class='notice'>[usr] switches [on ? "on" : "off"] \the [src].</span>", "<span class='notice'>You switch [on ? "on" : "off"] \the [src].</span>")
 			update_icon()
 			if (on)
-				SSair.atmos_machinery += src
+				SSair.start_processing_machine(src)
 			. = TRUE
 		if("mode")
 			setMode = params["mode"]