diff --git a/code/modules/atmospherics/environmental/LINDA_fire.dm b/code/modules/atmospherics/environmental/LINDA_fire.dm
index ace235e0c8f8..d4e00991b509 100644
--- a/code/modules/atmospherics/environmental/LINDA_fire.dm
+++ b/code/modules/atmospherics/environmental/LINDA_fire.dm
@@ -45,7 +45,7 @@
 
 //This is the icon for fire on turfs, also helps for nurturing small fires until they are full tile
 /obj/effect/hotspot
-	anchored = 1
+	anchored = TRUE
 	mouse_opacity = MOUSE_OPACITY_TRANSPARENT
 	icon = 'icons/goonstation/effects/fire.dmi'
 	icon_state = "1"
diff --git a/code/modules/atmospherics/machinery/airalarm.dm b/code/modules/atmospherics/machinery/airalarm.dm
index 74dde0f4c167..fd8a4646df58 100644
--- a/code/modules/atmospherics/machinery/airalarm.dm
+++ b/code/modules/atmospherics/machinery/airalarm.dm
@@ -73,7 +73,7 @@
 	name = "alarm"
 	icon = 'icons/obj/monitors.dmi'
 	icon_state = "alarm0"
-	anchored = 1
+	anchored = TRUE
 	use_power = IDLE_POWER_USE
 	idle_power_usage = 4
 	active_power_usage = 8
@@ -92,12 +92,12 @@
 	var/remote_control = TRUE
 	var/rcon_setting = RCON_AUTO
 	var/rcon_time = 0
-	var/locked = 1
+	var/locked = TRUE
 	var/datum/wires/alarm/wires = null
-	var/wiresexposed = 0 // If it's been screwdrivered open.
-	var/aidisabled = 0
+	var/wiresexposed = FALSE // If it's been screwdrivered open.
+	var/aidisabled = FALSE
 	var/AAlarmwires = 31
-	var/shorted = 0
+	var/shorted = FALSE
 
 	// Waiting on a device to respond.
 	// Specifies an id_tag.  NULL means we aren't waiting.
@@ -223,7 +223,7 @@
 			setDir(direction)
 
 		buildstage = 0
-		wiresexposed = 1
+		wiresexposed = TRUE
 		set_pixel_offsets_from_dir(-24, 24, -24, 24)
 
 	. = ..()
diff --git a/code/modules/atmospherics/machinery/atmospherics.dm b/code/modules/atmospherics/machinery/atmospherics.dm
index 9d76c6f1a83d..8f5fc1355770 100644
--- a/code/modules/atmospherics/machinery/atmospherics.dm
+++ b/code/modules/atmospherics/machinery/atmospherics.dm
@@ -9,7 +9,7 @@ Pipes -> Pipelines
 Pipelines + Other Objects -> Pipe network
 */
 /obj/machinery/atmospherics
-	anchored = 1
+	anchored = TRUE
 	layer = GAS_PIPE_HIDDEN_LAYER  //under wires
 	resistance_flags = FIRE_PROOF
 	max_integrity = 200
@@ -18,8 +18,8 @@ Pipelines + Other Objects -> Pipe network
 	active_power_usage = 0
 	power_channel = ENVIRON
 	on_blueprints = TRUE
-	var/nodealert = 0
-	var/can_unwrench = 0
+	var/nodealert = FALSE
+	var/can_unwrench = FALSE
 	/// If the machine is currently operating or not.
 	var/on = FALSE
 	/// The amount of pressure the machine wants to operate at.
diff --git a/code/modules/atmospherics/machinery/components/binary_devices/circulator.dm b/code/modules/atmospherics/machinery/components/binary_devices/circulator.dm
index 90361aca549e..308ba3e38ee9 100644
--- a/code/modules/atmospherics/machinery/components/binary_devices/circulator.dm
+++ b/code/modules/atmospherics/machinery/components/binary_devices/circulator.dm
@@ -10,11 +10,11 @@
 
 	var/obj/machinery/power/generator/generator
 
-	anchored = 1
-	density = 1
+	anchored = TRUE
+	density = TRUE
 
-	can_unwrench = 1
-	var/side_inverted = 0
+	can_unwrench = TRUE
+	var/side_inverted = FALSE
 
 /obj/machinery/atmospherics/binary/circulator/detailed_examine()
 	return "This generates electricity, depending on the difference in temperature between each side of the machine. The meter in \
@@ -72,39 +72,36 @@
 	update_icon()
 
 /obj/machinery/atmospherics/binary/circulator/proc/get_inlet_air()
-	if(side_inverted==0)
-		return air2
-	else
+	if(side_inverted)
 		return air1
+	else
+		return air2
 
 /obj/machinery/atmospherics/binary/circulator/proc/get_outlet_air()
-	if(side_inverted==0)
-		return air1
-	else
+	if(side_inverted)
 		return air2
+	else
+		return air1
 
 /obj/machinery/atmospherics/binary/circulator/proc/get_inlet_side()
 	if(dir==SOUTH||dir==NORTH)
-		if(side_inverted==0)
-			return "South"
-		else
+		if(side_inverted)
 			return "North"
+		else
+			return "South"
 
 /obj/machinery/atmospherics/binary/circulator/proc/get_outlet_side()
 	if(dir==SOUTH||dir==NORTH)
-		if(side_inverted==0)
-			return "North"
-		else
+		if(side_inverted)
 			return "South"
+		else
+			return "North"
 
 /obj/machinery/atmospherics/binary/circulator/multitool_act(mob/user, obj/item/I)
 	. = TRUE
 	if(!I.use_tool(src, user, 0, volume = I.tool_volume))
 		return
-	if(!side_inverted)
-		side_inverted = TRUE
-	else
-		side_inverted = FALSE
+	side_inverted = !side_inverted
 	to_chat(user, "<span class='notice'>You reverse the circulator's valve settings. The inlet of the circulator is now on the [get_inlet_side(dir)] side.</span>")
 	desc = "A gas circulator pump and heat exchanger. Its input port is on the [get_inlet_side(dir)] side, and its output port is on the [get_outlet_side(dir)] side."
 
diff --git a/code/modules/atmospherics/machinery/components/binary_devices/passive_gate.dm b/code/modules/atmospherics/machinery/components/binary_devices/passive_gate.dm
index 1b1443f78538..ad13f06dbe2e 100644
--- a/code/modules/atmospherics/machinery/components/binary_devices/passive_gate.dm
+++ b/code/modules/atmospherics/machinery/components/binary_devices/passive_gate.dm
@@ -7,7 +7,7 @@
 	name = "passive gate"
 	desc = "A one-way air valve that does not require power"
 
-	can_unwrench = 1
+	can_unwrench = TRUE
 
 	target_pressure = ONE_ATMOSPHERE
 
diff --git a/code/modules/atmospherics/machinery/components/binary_devices/pump.dm b/code/modules/atmospherics/machinery/components/binary_devices/pump.dm
index e6fb4f66f8c0..2b8ccb022aa4 100644
--- a/code/modules/atmospherics/machinery/components/binary_devices/pump.dm
+++ b/code/modules/atmospherics/machinery/components/binary_devices/pump.dm
@@ -19,7 +19,7 @@ Thus, the two variables affect pump operation are set in New():
 	name = "gas pump"
 	desc = "A pump"
 
-	can_unwrench = 1
+	can_unwrench = TRUE
 
 	target_pressure = ONE_ATMOSPHERE
 
@@ -55,7 +55,7 @@ Thus, the two variables affect pump operation are set in New():
 
 /obj/machinery/atmospherics/binary/pump/on
 	icon_state = "map_on"
-	on = 1
+	on = TRUE
 
 /obj/machinery/atmospherics/binary/pump/update_icon()
 	..()
diff --git a/code/modules/atmospherics/machinery/components/binary_devices/valve.dm b/code/modules/atmospherics/machinery/components/binary_devices/valve.dm
index e13854d04b49..283aca14f916 100644
--- a/code/modules/atmospherics/machinery/components/binary_devices/valve.dm
+++ b/code/modules/atmospherics/machinery/components/binary_devices/valve.dm
@@ -5,9 +5,9 @@
 	name = "manual valve"
 	desc = "A pipe valve."
 
-	can_unwrench = 1
+	can_unwrench = TRUE
 
-	var/open = 0
+	var/open = FALSE
 
 	req_one_access_txt = "24;10"
 
@@ -19,7 +19,7 @@
 	return "Click this to turn the valve. If red, the pipes on each end are separated. Otherwise, they are connected."
 
 /obj/machinery/atmospherics/binary/valve/open
-	open = 1
+	open = TRUE
 	icon_state = "map_valve1"
 
 /obj/machinery/atmospherics/binary/valve/update_icon(animation)
@@ -40,7 +40,7 @@
 		add_underlay(T, node2, get_dir(src, node2))
 
 /obj/machinery/atmospherics/binary/valve/proc/open()
-	open = 1
+	open = TRUE
 	update_icon()
 	parent1.update = 0
 	parent2.update = 0
@@ -49,7 +49,7 @@
 	return
 
 /obj/machinery/atmospherics/binary/valve/proc/close()
-	open = 0
+	open = FALSE
 	update_icon()
 	investigate_log("was closed by [usr ? key_name(usr) : "a remote signal"]", "atmos")
 	return
@@ -98,7 +98,7 @@
 	..()
 
 /obj/machinery/atmospherics/binary/valve/digital/open
-	open = 1
+	open = TRUE
 	icon_state = "map_valve1"
 
 /obj/machinery/atmospherics/binary/valve/digital/power_change()
diff --git a/code/modules/atmospherics/machinery/components/binary_devices/volume_pump.dm b/code/modules/atmospherics/machinery/components/binary_devices/volume_pump.dm
index f7e50707cdb3..5929225ea16d 100644
--- a/code/modules/atmospherics/machinery/components/binary_devices/volume_pump.dm
+++ b/code/modules/atmospherics/machinery/components/binary_devices/volume_pump.dm
@@ -19,7 +19,7 @@ Thus, the two variables affect pump operation are set in New():
 	name = "volumetric gas pump"
 	desc = "A volumetric pump"
 
-	can_unwrench = 1
+	can_unwrench = TRUE
 
 	var/transfer_rate = 200
 
@@ -51,7 +51,7 @@ Thus, the two variables affect pump operation are set in New():
 	return ..()
 
 /obj/machinery/atmospherics/binary/volume_pump/on
-	on = 1
+	on = TRUE
 	icon_state = "map_on"
 
 /obj/machinery/atmospherics/binary/volume_pump/atmos_init()
diff --git a/code/modules/atmospherics/machinery/components/trinary_devices/filter.dm b/code/modules/atmospherics/machinery/components/trinary_devices/filter.dm
index f40ecda91475..f27d01c89696 100644
--- a/code/modules/atmospherics/machinery/components/trinary_devices/filter.dm
+++ b/code/modules/atmospherics/machinery/components/trinary_devices/filter.dm
@@ -58,7 +58,7 @@
 
 /obj/machinery/atmospherics/trinary/filter/flipped
 	icon_state = "mmap"
-	flipped = 1
+	flipped = TRUE
 
 /obj/machinery/atmospherics/trinary/filter/update_icon()
 	..()
@@ -74,7 +74,7 @@
 		icon_state += on ? "on" : "off"
 	else
 		icon_state += "off"
-		on = 0
+		on = FALSE
 
 /obj/machinery/atmospherics/trinary/filter/update_underlays()
 	if(..())
diff --git a/code/modules/atmospherics/machinery/components/trinary_devices/mixer.dm b/code/modules/atmospherics/machinery/components/trinary_devices/mixer.dm
index 3b34a95c1bab..f1568410eb9c 100644
--- a/code/modules/atmospherics/machinery/components/trinary_devices/mixer.dm
+++ b/code/modules/atmospherics/machinery/components/trinary_devices/mixer.dm
@@ -2,7 +2,7 @@
 	icon = 'icons/atmos/mixer.dmi'
 	icon_state = "map"
 
-	can_unwrench = 1
+	can_unwrench = TRUE
 
 	name = "gas mixer"
 
@@ -33,7 +33,7 @@
 
 /obj/machinery/atmospherics/trinary/mixer/flipped
 	icon_state = "mmap"
-	flipped = 1
+	flipped = TRUE
 
 /obj/machinery/atmospherics/trinary/mixer/update_icon(safety = 0)
 	..()
@@ -49,7 +49,7 @@
 		icon_state += on ? "on" : "off"
 	else
 		icon_state += "off"
-		on = 0
+		on = FALSE
 
 /obj/machinery/atmospherics/trinary/mixer/update_underlays()
 	if(..())
diff --git a/code/modules/atmospherics/machinery/components/trinary_devices/trinary_base.dm b/code/modules/atmospherics/machinery/components/trinary_devices/trinary_base.dm
index 86b1aa74699b..7a6f32261b36 100644
--- a/code/modules/atmospherics/machinery/components/trinary_devices/trinary_base.dm
+++ b/code/modules/atmospherics/machinery/components/trinary_devices/trinary_base.dm
@@ -17,7 +17,7 @@
 	var/datum/pipeline/parent2
 	var/datum/pipeline/parent3
 
-	var/flipped = 0
+	var/flipped = FALSE
 
 /obj/machinery/atmospherics/trinary/New()
 	..()
diff --git a/code/modules/atmospherics/machinery/components/trinary_devices/tvalve.dm b/code/modules/atmospherics/machinery/components/trinary_devices/tvalve.dm
index 1ad9a1095a79..d59a206d0008 100644
--- a/code/modules/atmospherics/machinery/components/trinary_devices/tvalve.dm
+++ b/code/modules/atmospherics/machinery/components/trinary_devices/tvalve.dm
@@ -8,7 +8,7 @@
 	name = "manual switching valve"
 	desc = "A pipe valve"
 
-	can_unwrench = 1
+	can_unwrench = TRUE
 
 	var/state = TVALVE_STATE_STRAIGHT
 
@@ -21,11 +21,11 @@
 
 /obj/machinery/atmospherics/trinary/tvalve/flipped
 	icon_state = "map_tvalvem0"
-	flipped = 1
+	flipped = TRUE
 
 /obj/machinery/atmospherics/trinary/tvalve/flipped/bypass
 	icon_state = "map_tvalvem1"
-	flipped = 1
+	flipped = TRUE
 	state = TVALVE_STATE_SIDE
 
 /obj/machinery/atmospherics/trinary/tvalve/update_icon(animation)
@@ -121,11 +121,11 @@
 
 /obj/machinery/atmospherics/trinary/tvalve/digital/flipped
 	icon_state = "map_tvalvem0"
-	flipped = 1
+	flipped = TRUE
 
 /obj/machinery/atmospherics/trinary/tvalve/digital/flipped/bypass
 	icon_state = "map_tvalvem1"
-	flipped = 1
+	flipped = TRUE
 	state = TVALVE_STATE_SIDE
 
 /obj/machinery/atmospherics/trinary/tvalve/digital/power_change()
diff --git a/code/modules/atmospherics/machinery/components/unary_devices/cryo.dm b/code/modules/atmospherics/machinery/components/unary_devices/cryo.dm
index cd573c2f3e90..1de74b34eb0a 100644
--- a/code/modules/atmospherics/machinery/components/unary_devices/cryo.dm
+++ b/code/modules/atmospherics/machinery/components/unary_devices/cryo.dm
@@ -6,11 +6,11 @@
 	desc = "Lowers the body temperature so certain medications may take effect."
 	icon = 'icons/obj/cryogenics.dmi'
 	icon_state = "pod0"
-	density = 1
-	anchored = 1.0
+	density = TRUE
+	anchored = TRUE
 	layer = ABOVE_WINDOW_LAYER
 	plane = GAME_PLANE
-	interact_offline = 1
+	interact_offline = TRUE
 	max_integrity = 350
 	armor = list(MELEE = 0, BULLET = 0, LASER = 0, ENERGY = 100, BOMB = 0, BIO = 100, RAD = 100, FIRE = 30, ACID = 30)
 	var/temperature_archived
@@ -23,7 +23,7 @@
 	var/current_heat_capacity = 50
 	var/efficiency
 
-	var/running_bob_animation = 0 // This is used to prevent threads from building up if update_icons is called multiple times
+	var/running_bob_animation = FALSE // This is used to prevent threads from building up if update_icons is called multiple times
 
 	light_color = LIGHT_COLOR_WHITE
 
@@ -361,7 +361,7 @@
 		if(src.on && !running_bob_animation) //no bobbing if off
 			var/up = 0 //used to see if we are going up or down, 1 is down, 2 is up
 			spawn(0) // Without this, the icon update will block. The new thread will die once the occupant leaves.
-				running_bob_animation = 1
+				running_bob_animation = TRUE
 				while(occupant)
 					overlays -= "lid[on]" //have to remove the overlays first, to force an update- remove cloning pod overlay
 					overlays -= pickle //remove mob overlay
@@ -388,7 +388,7 @@
 					overlays += "lid[on]" //re-add the overlay of the pod, they are inside it, not floating
 
 					sleep(7) //don't want to jiggle violently, just slowly bob
-				running_bob_animation = 0
+				running_bob_animation = FALSE
 
 /obj/machinery/atmospherics/unary/cryo_cell/proc/process_occupant()
 	if(air_contents.total_moles() < 10)
diff --git a/code/modules/atmospherics/machinery/components/unary_devices/generator_input.dm b/code/modules/atmospherics/machinery/components/unary_devices/generator_input.dm
index cb095b1e5516..ae4cb9d270b5 100644
--- a/code/modules/atmospherics/machinery/components/unary_devices/generator_input.dm
+++ b/code/modules/atmospherics/machinery/components/unary_devices/generator_input.dm
@@ -1,7 +1,7 @@
 /obj/machinery/atmospherics/unary/generator_input
 	icon = 'icons/obj/atmospherics/heat_exchanger.dmi'
 	icon_state = "intact"
-	density = 1
+	density = TRUE
 
 	name = "generator input"
 	desc = "Placeholder"
diff --git a/code/modules/atmospherics/machinery/components/unary_devices/outlet_injector.dm b/code/modules/atmospherics/machinery/components/unary_devices/outlet_injector.dm
index f1bf25957d89..80d4f7bc4ca2 100644
--- a/code/modules/atmospherics/machinery/components/unary_devices/outlet_injector.dm
+++ b/code/modules/atmospherics/machinery/components/unary_devices/outlet_injector.dm
@@ -6,23 +6,23 @@
 
 	resistance_flags = FIRE_PROOF | UNACIDABLE | ACID_PROOF //really helpful in building gas chambers for xenomorphs
 
-	can_unwrench = 1
+	can_unwrench = TRUE
 
 	name = "air injector"
 	desc = "Has a valve and pump attached to it"
 
 	req_one_access_txt = "24;10"
 
-	var/injecting = 0
+	var/injecting = FALSE
 
 	var/volume_rate = 50
 
 	var/id
-	Mtoollink = 1
+	Mtoollink = TRUE
 	settagwhitelist = list("id_tag")
 
 /obj/machinery/atmospherics/unary/outlet_injector/on
-	on = 1
+	on = TRUE
 
 /obj/machinery/atmospherics/unary/outlet_injector/New()
 	..()
@@ -64,7 +64,7 @@
 /obj/machinery/atmospherics/unary/outlet_injector/process_atmos()
 	..()
 
-	injecting = 0
+	injecting = FALSE
 
 	if(!on || stat & NOPOWER)
 		return 0
@@ -85,7 +85,7 @@
 	if(on || injecting)
 		return 0
 
-	injecting = 1
+	injecting = TRUE
 
 	if(air_contents.temperature > 0)
 		var/transfer_moles = (air_contents.return_pressure())*volume_rate/(air_contents.temperature * R_IDEAL_GAS_EQUATION)
@@ -157,7 +157,7 @@
 				icon_state = "[i == 1 && istype(loc, /turf/simulated) ? "h" : "" ]off"
 		else
 			icon_state = "[i == 1 && istype(loc, /turf/simulated) ? "h" : "" ]exposed"
-			on = 0
+			on = FALSE
 		return*/
 
 /obj/machinery/atmospherics/unary/outlet_injector/multitool_menu(mob/user, obj/item/multitool/P)
diff --git a/code/modules/atmospherics/machinery/components/unary_devices/oxygen_generator.dm b/code/modules/atmospherics/machinery/components/unary_devices/oxygen_generator.dm
index fdeb02b7b833..ac223678e699 100644
--- a/code/modules/atmospherics/machinery/components/unary_devices/oxygen_generator.dm
+++ b/code/modules/atmospherics/machinery/components/unary_devices/oxygen_generator.dm
@@ -1,7 +1,7 @@
 /obj/machinery/atmospherics/unary/oxygen_generator
 	icon = 'icons/obj/atmospherics/oxygen_generator.dmi'
 	icon_state = "intact_off"
-	density = 1
+	density = TRUE
 
 	name = "oxygen generator"
 	desc = ""
@@ -19,7 +19,7 @@
 	else
 		icon_state = "exposed_off"
 
-		on = 0
+		on = FALSE
 
 /obj/machinery/atmospherics/unary/oxygen_generator/New()
 	..()
diff --git a/code/modules/atmospherics/machinery/components/unary_devices/passive_vent.dm b/code/modules/atmospherics/machinery/components/unary_devices/passive_vent.dm
index 94f9f17e4b59..438e95f021dd 100644
--- a/code/modules/atmospherics/machinery/components/unary_devices/passive_vent.dm
+++ b/code/modules/atmospherics/machinery/components/unary_devices/passive_vent.dm
@@ -6,7 +6,7 @@
 	name = "passive vent"
 	desc = "A large air vent"
 
-	can_unwrench = 1
+	can_unwrench = TRUE
 
 	var/volume = 250
 
diff --git a/code/modules/atmospherics/machinery/components/unary_devices/portables_connector.dm b/code/modules/atmospherics/machinery/components/unary_devices/portables_connector.dm
index 64aaa045c8f8..5f032649e40a 100644
--- a/code/modules/atmospherics/machinery/components/unary_devices/portables_connector.dm
+++ b/code/modules/atmospherics/machinery/components/unary_devices/portables_connector.dm
@@ -5,7 +5,7 @@
 	name = "connector port"
 	desc = "For connecting portables devices related to atmospherics control."
 
-	can_unwrench = 1
+	can_unwrench = TRUE
 	layer = GAS_FILTER_LAYER
 
 	var/obj/machinery/portable_atmospherics/connected_device
diff --git a/code/modules/atmospherics/machinery/components/unary_devices/tank.dm b/code/modules/atmospherics/machinery/components/unary_devices/tank.dm
index ed0c438008a3..9b772373fe7c 100644
--- a/code/modules/atmospherics/machinery/components/unary_devices/tank.dm
+++ b/code/modules/atmospherics/machinery/components/unary_devices/tank.dm
@@ -9,7 +9,7 @@
 
 	var/volume = 10000 //in liters, 1 meters by 1 meters by 2 meters ~tweaked it a little to simulate a pressure tank without needing to recode them yet
 
-	density = 1
+	density = TRUE
 
 /obj/machinery/atmospherics/unary/tank/update_underlays()
 	if(..())
diff --git a/code/modules/atmospherics/machinery/components/unary_devices/thermal_plate.dm b/code/modules/atmospherics/machinery/components/unary_devices/thermal_plate.dm
index 6cd050de0229..e27754d25c91 100644
--- a/code/modules/atmospherics/machinery/components/unary_devices/thermal_plate.dm
+++ b/code/modules/atmospherics/machinery/components/unary_devices/thermal_plate.dm
@@ -5,7 +5,7 @@
 	icon = 'icons/obj/atmospherics/cold_sink.dmi'
 	icon_state = "off"
 
-	can_unwrench = 1
+	can_unwrench = TRUE
 
 	name = "thermal tansfer plate"
 	desc = "Transfers heat to and from an area"
diff --git a/code/modules/atmospherics/machinery/components/unary_devices/vent_scrubber.dm b/code/modules/atmospherics/machinery/components/unary_devices/vent_scrubber.dm
index c489ae93b250..4799db33bd3a 100644
--- a/code/modules/atmospherics/machinery/components/unary_devices/vent_scrubber.dm
+++ b/code/modules/atmospherics/machinery/components/unary_devices/vent_scrubber.dm
@@ -12,7 +12,7 @@
 	idle_power_usage = 10
 	active_power_usage = 60
 
-	can_unwrench = 1
+	can_unwrench = TRUE
 
 	var/area/initial_loc
 
@@ -20,17 +20,17 @@
 
 	var/list/turf/simulated/adjacent_turfs = list()
 
-	var/scrubbing = 1 //0 = siphoning, 1 = scrubbing
-	var/scrub_O2 = 0
-	var/scrub_N2 = 0
-	var/scrub_CO2 = 1
-	var/scrub_Toxins = 0
-	var/scrub_N2O = 0
+	var/scrubbing = TRUE //FALSE = siphoning, TRUE = scrubbing
+	var/scrub_O2 = FALSE
+	var/scrub_N2 = FALSE
+	var/scrub_CO2 = TRUE
+	var/scrub_Toxins = FALSE
+	var/scrub_N2O = FALSE
 
 	var/volume_rate = 200
-	var/widenet = 0 //is this scrubber acting on the 3x3 area around it.
+	var/widenet = FALSE //is this scrubber acting on the 3x3 area around it.
 
-	var/welded = 0
+	var/welded = FALSE
 
 	var/area_uid
 	var/radio_filter_out
@@ -201,7 +201,7 @@
 		return
 
 	if(!node)
-		on = 0
+		on = FALSE
 
 	if(welded)
 		return 0
diff --git a/code/modules/atmospherics/machinery/pipes/pipe.dm b/code/modules/atmospherics/machinery/pipes/pipe.dm
index 2e79545b2061..5641306414d4 100644
--- a/code/modules/atmospherics/machinery/pipes/pipe.dm
+++ b/code/modules/atmospherics/machinery/pipes/pipe.dm
@@ -4,7 +4,7 @@
 	var/volume = 0
 	force = 20
 	use_power = NO_POWER_USE
-	can_unwrench = 1
+	can_unwrench = TRUE
 	damage_deflection = 12
 	var/alert_pressure = 80*ONE_ATMOSPHERE //minimum pressure before check_pressure(...) should be called
 
diff --git a/code/modules/atmospherics/machinery/portable/canister.dm b/code/modules/atmospherics/machinery/portable/canister.dm
index e945d2117932..54bbd15930d6 100644
--- a/code/modules/atmospherics/machinery/portable/canister.dm
+++ b/code/modules/atmospherics/machinery/portable/canister.dm
@@ -43,13 +43,13 @@ GLOBAL_DATUM_INIT(canister_icon_container, /datum/canister_icons, new())
 	name = "canister"
 	icon = 'icons/obj/atmos.dmi'
 	icon_state = "yellow"
-	density = 1
+	density = TRUE
 	flags = CONDUCT
 	armor = list(MELEE = 50, BULLET = 50, LASER = 50, ENERGY = 100, BOMB = 10, BIO = 100, RAD = 100, FIRE = 80, ACID = 50)
 	max_integrity = 250
 	integrity_failure = 100
 
-	var/valve_open = 0
+	var/valve_open = FALSE
 	var/release_pressure = ONE_ATMOSPHERE
 
 	var/list/canister_color //variable that stores colours
@@ -61,13 +61,13 @@ GLOBAL_DATUM_INIT(canister_icon_container, /datum/canister_icons, new())
 	//passed to the ui to render the color lists
 	var/list/colorcontainer
 
-	var/can_label = 1
+	var/can_label = TRUE
 	var/filled = 0.5
 	pressure_resistance = 7 * ONE_ATMOSPHERE
 	var/temperature_resistance = 1000 + T0C
 	volume = 1000
 	use_power = NO_POWER_USE
-	interact_offline = 1
+	interact_offline = TRUE
 	var/release_log = ""
 	var/update_flag = 0
 
@@ -254,9 +254,9 @@ update_flag
 
 
 	if(air_contents.return_pressure() < 1)
-		can_label = 1
+		can_label = TRUE
 	else
-		can_label = 0
+		can_label = FALSE
 
 	updateDialog()
 	return
@@ -396,31 +396,31 @@ update_flag
 /obj/machinery/portable_atmospherics/canister/toxins
 	name = "Canister \[Toxin (Plasma)\]"
 	icon_state = "orange" //See New()
-	can_label = 0
+	can_label = FALSE
 /obj/machinery/portable_atmospherics/canister/oxygen
 	name = "Canister: \[O2\]"
 	icon_state = "blue" //See New()
-	can_label = 0
+	can_label = FALSE
 /obj/machinery/portable_atmospherics/canister/sleeping_agent
 	name = "Canister: \[N2O\]"
 	icon_state = "redws" //See New()
-	can_label = 0
+	can_label = FALSE
 /obj/machinery/portable_atmospherics/canister/nitrogen
 	name = "Canister: \[N2\]"
 	icon_state = "red" //See New()
-	can_label = 0
+	can_label = FALSE
 /obj/machinery/portable_atmospherics/canister/carbon_dioxide
 	name = "Canister \[CO2\]"
 	icon_state = "black" //See New()
-	can_label = 0
+	can_label = FALSE
 /obj/machinery/portable_atmospherics/canister/air
 	name = "Canister \[Air\]"
 	icon_state = "grey" //See New()
-	can_label = 0
+	can_label = FALSE
 /obj/machinery/portable_atmospherics/canister/custom_mix
 	name = "Canister \[Custom\]"
 	icon_state = "whiters" //See New()
-	can_label = 0
+	can_label = FALSE
 
 
 /obj/machinery/portable_atmospherics/canister/toxins/New()
diff --git a/code/modules/atmospherics/machinery/portable/portable_atmospherics.dm b/code/modules/atmospherics/machinery/portable/portable_atmospherics.dm
index 625b47a7fe77..0f8789859d87 100644
--- a/code/modules/atmospherics/machinery/portable/portable_atmospherics.dm
+++ b/code/modules/atmospherics/machinery/portable/portable_atmospherics.dm
@@ -65,7 +65,7 @@
 		connected_port.build_network()
 	connected_port.parent.reconcile_air()
 
-	anchored = 1 //Prevent movement
+	anchored = TRUE //Prevent movement
 
 	return 1
 
@@ -73,7 +73,7 @@
 	if(!connected_port)
 		return 0
 
-	anchored = 0
+	anchored = FALSE
 
 	connected_port.connected_device = null
 	connected_port = null
diff --git a/code/modules/atmospherics/machinery/portable/scrubber.dm b/code/modules/atmospherics/machinery/portable/scrubber.dm
index f106e7b84064..0904fd72a553 100644
--- a/code/modules/atmospherics/machinery/portable/scrubber.dm
+++ b/code/modules/atmospherics/machinery/portable/scrubber.dm
@@ -164,14 +164,14 @@
 /obj/machinery/portable_atmospherics/scrubber/huge
 	name = "Huge Air Scrubber"
 	icon_state = "scrubber:0"
-	anchored = 1
+	anchored = TRUE
 	volume = 50000
 	volume_rate = 5000
-	widenet = 1
+	widenet = TRUE
 
 	var/global/gid = 1
 	var/id = 0
-	var/stationary = 0
+	var/stationary = FALSE
 
 /obj/machinery/portable_atmospherics/scrubber/huge/New()
 	..()
@@ -212,6 +212,6 @@
 
 /obj/machinery/portable_atmospherics/scrubber/huge/stationary
 	name = "Stationary Air Scrubber"
-	stationary = 1
+	stationary = TRUE
 
 #undef MAX_RATE