diff --git a/code/modules/atmospherics/machinery/airalarm.dm b/code/modules/atmospherics/machinery/airalarm.dm
index 875b525633..4a003ad84f 100644
--- a/code/modules/atmospherics/machinery/airalarm.dm
+++ b/code/modules/atmospherics/machinery/airalarm.dm
@@ -86,19 +86,19 @@
 
 	var/list/TLV = list( // Breathable air.
 		"pressure"					= new/datum/tlv(ONE_ATMOSPHERE * 0.8, ONE_ATMOSPHERE*  0.9, ONE_ATMOSPHERE * 1.1, ONE_ATMOSPHERE * 1.2), // kPa
-		"temperature"				= new/datum/tlv(T0C, T0C+10, T0C+40, T0C+66), // K
+		"temperature"				= new/datum/tlv(T0C, T0C+10, T0C+40, T0C+66),
 		/datum/gas/oxygen			= new/datum/tlv(16, 19, 135, 140), // Partial pressure, kpa
-		/datum/gas/nitrogen			= new/datum/tlv(-1, -1, 1000, 1000), // Partial pressure, kpa
-		/datum/gas/carbon_dioxide	= new/datum/tlv(-1, -1, 5, 10), // Partial pressure, kpa
-		/datum/gas/plasma			= new/datum/tlv/dangerous, // Partial pressure, kpa
-		/datum/gas/nitrous_oxide	= new/datum/tlv/dangerous, // Partial pressure, kpa
+		/datum/gas/nitrogen			= new/datum/tlv(-1, -1, 1000, 1000),
+		/datum/gas/carbon_dioxide	= new/datum/tlv(-1, -1, 5, 10),
+		/datum/gas/plasma			= new/datum/tlv/dangerous,
+		/datum/gas/nitrous_oxide	= new/datum/tlv/dangerous,
 		/datum/gas/bz				= new/datum/tlv/dangerous,
-		/datum/gas/hypernoblium		= new/datum/tlv/dangerous,
+		/datum/gas/hypernoblium		= new/datum/tlv(-1, -1, 1000, 1000), // Hyper-Noblium is inert and nontoxic
 		/datum/gas/water_vapor		= new/datum/tlv/dangerous,
 		/datum/gas/tritium			= new/datum/tlv/dangerous,
-		/datum/gas/stimulum			= new/datum/tlv/dangerous,
+		/datum/gas/stimulum			= new/datum/tlv(-1, -1, 1000, 1000), // Stimulum has only positive effects
 		/datum/gas/nitryl			= new/datum/tlv/dangerous,
-		/datum/gas/pluoxium			= new/datum/tlv(-1, -1, 135, 140) // Partial pressure, kpa
+		/datum/gas/pluoxium			= new/datum/tlv(-1, -1, 1000, 1000) // Unlike oxygen, pluoxium does not fuel plasma/tritium fires
 	)
 
 /obj/machinery/airalarm/server // No checks here.
@@ -122,19 +122,19 @@
 /obj/machinery/airalarm/kitchen_cold_room // Copypasta: to check temperatures.
 	TLV = list(
 		"pressure"					= new/datum/tlv(ONE_ATMOSPHERE * 0.8, ONE_ATMOSPHERE*  0.9, ONE_ATMOSPHERE * 1.1, ONE_ATMOSPHERE * 1.2), // kPa
-		"temperature"				= new/datum/tlv(200,210,273.15,283.15), // K
+		"temperature"				= new/datum/tlv(T0C-73.15, T0C-63.15, T0C, T0C+10),
 		/datum/gas/oxygen			= new/datum/tlv(16, 19, 135, 140), // Partial pressure, kpa
-		/datum/gas/nitrogen			= new/datum/tlv(-1, -1, 1000, 1000), // Partial pressure, kpa
-		/datum/gas/carbon_dioxide	= new/datum/tlv(-1, -1, 5, 10), // Partial pressure, kpa
-		/datum/gas/plasma			= new/datum/tlv/dangerous, // Partial pressure, kpa
-		/datum/gas/nitrous_oxide	= new/datum/tlv/dangerous, // Partial pressure, kpa
+		/datum/gas/nitrogen			= new/datum/tlv(-1, -1, 1000, 1000),
+		/datum/gas/carbon_dioxide	= new/datum/tlv(-1, -1, 5, 10),
+		/datum/gas/plasma			= new/datum/tlv/dangerous,
+		/datum/gas/nitrous_oxide	= new/datum/tlv/dangerous,
 		/datum/gas/bz				= new/datum/tlv/dangerous,
-		/datum/gas/hypernoblium		= new/datum/tlv/dangerous,
+		/datum/gas/hypernoblium		= new/datum/tlv(-1, -1, 1000, 1000), // Hyper-Noblium is inert and nontoxic
 		/datum/gas/water_vapor		= new/datum/tlv/dangerous,
 		/datum/gas/tritium			= new/datum/tlv/dangerous,
-		/datum/gas/stimulum			= new/datum/tlv/dangerous,
+		/datum/gas/stimulum			= new/datum/tlv(-1, -1, 1000, 1000), // Stimulum has only positive effects
 		/datum/gas/nitryl			= new/datum/tlv/dangerous,
-		/datum/gas/pluoxium			= new/datum/tlv(-1, -1, 135, 140) // Partial pressure, kpa
+		/datum/gas/pluoxium			= new/datum/tlv(-1, -1, 1000, 1000) // Unlike oxygen, pluoxium does not fuel plasma/tritium fires
 	)
 
 /obj/machinery/airalarm/unlocked