If you’re asking for heat but only cold air is coming out, the problem likely lies in one of two areas: Either hot coolant isn’t circulating through the heater core behind the dashboard ...

Interestingly, both hot and cold temperatures invoked brain activity ... as a standard for creating an optimal indoor environment (air conditioning) by the American Society of Heating ...

Interestingly, both hot and cold temperatures invoked brain activity ... as a standard for creating an optimal indoor environment (air conditioning) by the American Society of Heating ...