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--- hvac:heating [2024/11/22 19:17]
frater_secessus [Non-ventilated Propane Heaters] corrected btu typo
+++ hvac:heating [2024/11/22 19:38] (current)
frater_secessus [Non-ventilated Propane Heaters]
@@ Line 71: / Line 71: @@
 ==== Non-ventilated Propane Heaters ====
-Burning propane doesn't produce the poisonous exhaust that diesel and gasoline does, and therefor can //sort of// safely be run indoors without ventilating the exhaust products. There are a couple of things to remember about this method though:
+Note:  these are called //non-ventilated// heaters because there is no external exhaust for the heater.
-  * Burning propane **generates water vapor** which will increase the humidity in your vehicle. You may require additional ventilation or [[hvac:dehumidifier|dehumidification]].
-  * Burning propane **generates carbon dioxide.** Even clean-burning, low CO2 emission heaters **generate much more CO in low oxygen levels**.  This is the reason you are supposed to ventilate.
+  * **Ventilation of the heated space is still required**.  (ie the heater isn't vented but your living space must be)
+  * the primary outputs of propane combustion/catalysis are **water vapor** and **CO2**.  This means running an unvented propane heater will increase the humidity in your vehicle. You may require additional ventilation or [[hvac:dehumidifier|dehumidification]] unless you are in an area with very low humidity.
+  * **if  O2 levels are too low** (due to insufficient ventilation)  the reaction gives off **increasingly-deadly amounts of CO**((carbon *mon*oxide)).  This is the same culprit as deaths from folks running generators indoors, vehicles in the garage, etc.  So we keep O2 levels normal by ventilating the space.
   * Any forced air heater will require electrical power to run the fan.
@@ Line 81: / Line 83: @@
 Although Chinese Diesel Heaters are becoming more popular, traditionally [[http://amzn.to/2gRq7qB|{{ https://images-na.ssl-images-amazon.com/images/I/51Fp5yqOMpL._AC_US160_.jpg}}]]
-the most common way to heat vehicles off-grid has been with open flame propane.  The most common non-OEM propane heater for RVers is the [[http://amzn.to/2gE6pB7|Mr.Heater Buddy]] series.
+the most common way to heat vehicles off-grid has been with open flame propane.  The most common non-OEM propane heater for RVers is the [[http://amzn.to/2gE6pB7|Mr.Heater Buddy]] series.  They use direct flame to heat a ceramic matrix like the old gas heater at your grandparent's house.
   * [[http://amzn.to/2pPW7C1|Little Buddy]] - 3800btu.((1113w equivalent))  A small round unit that mounts directly to a 1# propane bottle.  It's rather tall -- compare the size of the 1# propane bottle it sits on.

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