A larger residence, located in an area with colder winters, would require a more complex system to maintain satisfactory conditions year-round including all except:

In a larger residence situated in a region with colder winters, maintaining comfort throughout the year is essential, which includes managing temperature, humidity, and air quality. When considering the components of a complex HVAC (Heating, Ventilation, and Air Conditioning) system, cooling is typically not a primary focus during the winter months, as heating is the predominant necessity in such climates.

Humidification is important in cold weather as heating systems can dry out indoor air, leading to discomfort and respiratory issues. Filtration is crucial for maintaining indoor air quality by removing dust, allergens, and pollutants, which can become trapped in a larger space. Ventilation helps ensure that stale air is replaced with fresh air, which is vital for healthy indoor air quality year-round.

Cooling, on the other hand, while necessary in warmer months, is less relevant in a cold winter environment. Thus, the complexity of the system needed for year-round comfort is less likely to involve cooling, especially when considering the seasonal priority shifts in temperature control and comfort.