General HVAC
Load Calculation
The engineering process of determining exactly how much heating and cooling capacity your specific home requires, accounting for size, insulation, windows, climate, and other factors.
What Is a Load Calculation?
A load calculation (most commonly a Manual J calculation) is the only proper way to determine what size HVAC system your home needs. It accounts for your home's square footage, insulation values, number and type of windows, orientation to the sun, local climate data (including temperature extremes), number of occupants, and heat-generating appliances. The result tells the contractor exactly how many BTUs of heating and cooling capacity your home needs, which determines the right equipment size.
Why It Matters for Your Home
Proper sizing is the single most important factor in HVAC system performance and longevity. An oversized system wastes energy, creates humidity problems, and wears out faster from short cycling. An undersized system runs constantly and can't keep up on extreme days. Every reputable HVAC installation should begin with a load calculation — if a contractor wants to skip this step, consider it a red flag.
Getting a new HVAC system? Insist on a proper load calculation. Call Trademark Tek at 541-500-0663.
Quick Facts
Category
General HVAC
Also Known As
Load Calculation
