On the 744, it depends where you are. The consistency of temperature control through the aircraft on the older designs (744, also 777) is not as good as in newer designs. if you always favour a part of the aircraft which is consistently above the target temperature, you will think the aircraft is always warm. Commensurately if you favour a place that is always consistently below target temprature you'll think the aircraft is always cold.

Newer aircraft designs have better consistency of temperature as you move around the aircraft.