diff --git a/code/game/machinery/air_alarm.dm b/code/game/machinery/air_alarm.dm
index ba2b357284..cc18dc9e86 100644
--- a/code/game/machinery/air_alarm.dm
+++ b/code/game/machinery/air_alarm.dm
@@ -188,7 +188,7 @@
 /obj/machinery/alarm/proc/handle_heating_cooling(var/datum/gas_mixture/environment)
 	if(!regulating_temperature)
 		//check for when we should start adjusting temperature
-		if(!get_danger_level(target_temperature, TLV["temperature"]) && abs(environment.temperature - target_temperature) > 2.0)
+		if(!get_danger_level(target_temperature, TLV["temperature"]) && abs(environment.temperature - target_temperature) > 2.0 && environment.return_pressure() >= 1)
 			update_use_power(USE_POWER_ACTIVE)
 			regulating_temperature = 1
 			audible_message("\The [src] clicks as it starts [environment.temperature > target_temperature ? "cooling" : "heating"] the room.",\
@@ -196,7 +196,7 @@
 			playsound(src, 'sound/machines/click.ogg', 50, 1)
 	else
 		//check for when we should stop adjusting temperature
-		if(get_danger_level(target_temperature, TLV["temperature"]) || abs(environment.temperature - target_temperature) <= 0.5)
+		if(get_danger_level(target_temperature, TLV["temperature"]) || abs(environment.temperature - target_temperature) <= 0.5 || environment.return_pressure() < 1)
 			update_use_power(USE_POWER_IDLE)
 			regulating_temperature = 0
 			audible_message("\The [src] clicks quietly as it stops [environment.temperature > target_temperature ? "cooling" : "heating"] the room.",\