Bypassing heater core ?

[Dayle]

Can I bypass my heater core

 

[GRPAVL]

yes - but I dont know why. Depending on the engine you can do it at the engine where the pipes come in/out or you can do it at the firewall by unplugging both and joining somehow (piece of pipe normally).

Wont kill anything if you loop it but dont simply block the pipes.

Q

 

[jatsvl]

yes! but you will have no windscreen demister.
pain in the @rse and a defect.

 

[Not_An_Abba_Fan]

yes! but you will have no windscreen demister.
pain in the @rse and a defect.

Yes you will, and no it isn't. The regulations state that you must have air blowing on the inside of the windscreen, not warm air. The fan will still work, just not blow warm air.

 

[ari666]

Yes you will, and no it isn't. The regulations state that you must have air blowing on the inside of the windscreen, not warm air. The fan will still work, just not blow warm air.

hmmmm, thats the thing i love about ADR's, its all down to interpretation:

23. DEMISTING OF WINDSCREENS
very motor vehicle having a windscreen must be fitted with a device capable of removing condensed moisture from the inside of the windscreen. This requirement does not apply to LA, LB, LC, LD or LEM vehicle categories or vehicles that do not have provision for a roof.

but i do believe you are correct NAAF, i have never really read that ADR with that way of thinking, always just interprited as warm air is the way to get rid of condensation... suppose it comes down to who the tester is.

 

[Jxfwsf]

although it goes against physics i find cold air from the ac (in victoria atleast) removes fog much quicker than using the heater... theory is you need warm air to evaporate the moisture but i never find this to work effectively

 

[Not_An_Abba_Fan]

The A/C works as a dehumidifier, whether the temperature of the air is warm or cold doesn't matter. Having the A/C on will get rid of the "fog" much quicker.