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^lol

anyway, the lack of heat felt in the air emitted from the vents even when the heater dial is set to full hot and directed to the front vents could be caused by several things in the chain, working systematically backwards (excuse the sheldon bigbangtheory-like description lol):
ur perseption of heat on ur hands is outnumbered by the freezing temp of the surrounding cabin air, or ur skin is cold blooded asbestos
incorrectly adjusted redirection controls leading to hot air partially bled to other vents rather than directed fully to the front vents
incorrectly adjusted temperature control vane - the dials set to hot but the vane could actually be at 75% hot so some of the fresh cool air bleeds through making it seem not as hot as before
intake air density too high - air flowing through the heater matrix is either too fast or far too cold for the matrix to transfer sufficient amount of heat from the coolant so the low amount of heat energy per cubic volume of air makes it feel though its not hot enough
heater matrix blocked by debris resulting in insufficient airflow/heat transfer through the matrix and the built up air pressure would rather take the easiest path around the cool side of the diverter vane hence more % of cool vs % of hot air = warm (can be tested by feeling if airflow seems alot more restricted when set to fully hot vs fully cold)
insufficient flow of hot coolant through the heater matrix due to either limescale/debris blockage in the matrix or incorrectly adjusted coolant flow control valve at one of the matrix coolant pipes connected to the heater dial mechanism
insufficient heat in the coolant - either cos the engine has just fired up and is still cold = wait abit longer to warm up, or the heat energy from the engine is removed from the coolant prematurely by the radiator before the system has reached 82C due to a stuck open/missing thermostat.

<blockquote data-quote="pollyp" data-source="post: 543827" data-attributes="member: 4527">^lol&nbsp;anyway, the lack of heat felt in the air emitted from the vents even when the heater dial is set to full hot and directed to the front vents could be caused by several things in the chain, working systematically backwards (excuse the sheldon bigbangtheory-like description lol):<ul>
<li data-xf-list-type="ul">ur perseption of heat on ur hands is outnumbered by the freezing temp of the surrounding cabin air, or ur skin is cold blooded asbestos <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite19" alt=":p" title="Stick out tongue&nbsp; &nbsp; :p" loading="lazy" data-shortname=":p" /></li>
<li data-xf-list-type="ul">incorrectly adjusted redirection controls leading to hot air partially bled to other vents rather than directed fully to the front vents</li>
<li data-xf-list-type="ul">incorrectly adjusted temperature control vane - the dials set to hot but the vane could actually be at 75% hot so some of the fresh cool air bleeds through making it seem not as hot as before</li>
<li data-xf-list-type="ul">intake air density too high - air flowing through the heater matrix is either too fast or far too cold for the matrix to transfer sufficient amount of heat from the coolant so the low amount of heat energy per cubic volume of air makes it feel though its not hot enough</li>
<li data-xf-list-type="ul">heater matrix blocked by debris resulting in insufficient airflow/heat transfer through the matrix and the built up air pressure would rather take the easiest path around the cool side of the diverter vane hence more % of cool vs % of hot air = warm (can be tested by feeling if airflow seems alot more restricted when set to fully hot vs fully cold)</li>
<li data-xf-list-type="ul">insufficient flow of hot coolant through the heater matrix due to either limescale/debris blockage in the matrix or incorrectly adjusted coolant flow control valve at one of the matrix coolant pipes connected to the heater dial mechanism</li>
<li data-xf-list-type="ul">insufficient heat in the coolant - either cos the engine has just fired up and is still cold = wait abit longer to warm up, or the heat energy from the engine is removed from the coolant prematurely by the radiator before the system has reached 82C due to a stuck open/missing thermostat.</li>
</ul></blockquote>

[QUOTE="pollyp, post: 543827, member: 4527"] ^lol anyway, the lack of heat felt in the air emitted from the vents even when the heater dial is set to full hot and directed to the front vents could be caused by several things in the chain, working systematically backwards (excuse the sheldon bigbangtheory-like description lol): [LIST] [*]ur perseption of heat on ur hands is outnumbered by the freezing temp of the surrounding cabin air, or ur skin is cold blooded asbestos :p [*]incorrectly adjusted redirection controls leading to hot air partially bled to other vents rather than directed fully to the front vents [*]incorrectly adjusted temperature control vane - the dials set to hot but the vane could actually be at 75% hot so some of the fresh cool air bleeds through making it seem not as hot as before [*]intake air density too high - air flowing through the heater matrix is either too fast or far too cold for the matrix to transfer sufficient amount of heat from the coolant so the low amount of heat energy per cubic volume of air makes it feel though its not hot enough [*]heater matrix blocked by debris resulting in insufficient airflow/heat transfer through the matrix and the built up air pressure would rather take the easiest path around the cool side of the diverter vane hence more % of cool vs % of hot air = warm (can be tested by feeling if airflow seems alot more restricted when set to fully hot vs fully cold) [*]insufficient flow of hot coolant through the heater matrix due to either limescale/debris blockage in the matrix or incorrectly adjusted coolant flow control valve at one of the matrix coolant pipes connected to the heater dial mechanism [*]insufficient heat in the coolant - either cos the engine has just fired up and is still cold = wait abit longer to warm up, or the heat energy from the engine is removed from the coolant prematurely by the radiator before the system has reached 82C due to a stuck open/missing thermostat. [/LIST] [/QUOTE]

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