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Heating control in Honda Jazz

I don't like air-conditioning and prefer to use fresh air ventilation, but I find the interior of my new Honda Jazz GLi oppressively warm. I thought it could be that the heater controls could have been incorrectly connected and asked the dealer to check them at the first service. The dealer advised me that there was nothing wrong, that all cars are the same. I was also informed to use the air-conditioning if I wanted to be comfortable, but the owner's manual advises against that because it results in increased fuel consumption and it goes on to recommend using the fresh-air ventilation where possible. I am extremely disappointed with the vehicle and believe cars should not be sold with this problem as I feel they are not fit for purpose. Your thoughts?

All cars today are fitted with air-conditioning and there's an assumption that owners will use it, and use it all the time regardless of the outside temperature. As a result there is less emphasis placed on making sure the ventilation system is effective for those few people who prefer to get their air that way. The air coming through the air-conditioning system is as fresh as that coming through the ventilation system if you switch the a/c over to outside air, and if you set the temperature to around the ambient the load of the system won't be overly high and won't affect your fuel economy too much. Other than that there's not much you can do.

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