diff --git a/code/__DEFINES/atmospherics/atmos_helpers.dm b/code/__DEFINES/atmospherics/atmos_helpers.dm
index f53e5a67b36..e321404ad15 100644
--- a/code/__DEFINES/atmospherics/atmos_helpers.dm
+++ b/code/__DEFINES/atmospherics/atmos_helpers.dm
@@ -99,12 +99,17 @@ GLOBAL_LIST_INIT(atmos_adjacent_savings, list(0,0))
  *
  * Not immediately obvious, but saves us operation time.
  * 
+ * We put a lot of parentheses here because the numbers get really really big. 
+ * By prioritizing the division we try to tone the number down so we dont get overflows.
+ * 
  * Arguments:
  * * temperature_delta: T2 - T1. [/datum/gas_mixture/var/temperature]
+ * If you have any moderating (less than 1) coefficients and are dealing with very big numbers 
+ * multiply the temperature_delta by it first before passing so we get even more breathing room.
  * * heat_capacity_one:  gasmix one's [/datum/gas_mixture/proc/heat_capacity]
  * * heat_capacity_two: gasmix two's [/datum/gas_mixture/proc/heat_capacity]
  * Returns: The energy gained by gas mixture one. Negative if gas mixture one loses energy.
  * Honestly the heat capacity is interchangeable, just make sure the delta is right.
  */
 #define CALCULATE_CONDUCTION_ENERGY(temperature_delta, heat_capacity_one, heat_capacity_two)\
-	(temperature_delta * heat_capacity_one * heat_capacity_two / (heat_capacity_one+heat_capacity_two))
+	((temperature_delta) * ((heat_capacity_one) * ((heat_capacity_two) / ((heat_capacity_one) + (heat_capacity_two)))))
diff --git a/code/modules/atmospherics/environmental/LINDA_turf_tile.dm b/code/modules/atmospherics/environmental/LINDA_turf_tile.dm
index 002d46cff09..4cc7d10f7bb 100644
--- a/code/modules/atmospherics/environmental/LINDA_turf_tile.dm
+++ b/code/modules/atmospherics/environmental/LINDA_turf_tile.dm
@@ -650,7 +650,8 @@ Then we space some of our heat, and think about if we should stop conducting.
 	if(heat_capacity <= 0 || abs(delta_temperature) <= MINIMUM_TEMPERATURE_DELTA_TO_CONSIDER)
 		return
 	// Heat should be positive in most cases
-	var/heat = thermal_conductivity * CALCULATE_CONDUCTION_ENERGY(delta_temperature, HEAT_CAPACITY_VACUUM, heat_capacity)
+	// coefficient applied first because some turfs have very big heat caps.
+	var/heat = CALCULATE_CONDUCTION_ENERGY(thermal_conductivity * delta_temperature, HEAT_CAPACITY_VACUUM, heat_capacity)
 	temperature -= heat / heat_capacity
 
 /turf/open/proc/temperature_share_open_to_solid(turf/sharer)
diff --git a/code/modules/atmospherics/gasmixtures/gas_mixture.dm b/code/modules/atmospherics/gasmixtures/gas_mixture.dm
index 944b22c02bb..7e227dad419 100644
--- a/code/modules/atmospherics/gasmixtures/gas_mixture.dm
+++ b/code/modules/atmospherics/gasmixtures/gas_mixture.dm
@@ -443,7 +443,8 @@ GLOBAL_LIST_INIT(gaslist_cache, init_gaslist_cache())
 		sharer_heat_capacity = sharer_heat_capacity || sharer.heat_capacity(ARCHIVE)
 
 		if((sharer_heat_capacity > MINIMUM_HEAT_CAPACITY) && (self_heat_capacity > MINIMUM_HEAT_CAPACITY))
-			var/heat = conduction_coefficient * CALCULATE_CONDUCTION_ENERGY(temperature_delta, sharer_heat_capacity, self_heat_capacity)
+			// coefficient applied first because some turfs have very big heat caps.
+			var/heat = CALCULATE_CONDUCTION_ENERGY(conduction_coefficient * temperature_delta, sharer_heat_capacity, self_heat_capacity)
 
 			temperature = max(temperature - heat/self_heat_capacity, TCMB)
 			sharer_temperature = max(sharer_temperature + heat/sharer_heat_capacity, TCMB)