: This is the most critical step. You must determine the correct tonnage (for cooling) or BTUs (for heating). Professionals use a "Manual J" load calculation, which considers your home's square footage, insulation, and window placement.
Buying an HVAC unit online is an increasingly popular way for homeowners to save money, often reducing equipment costs by up to compared to traditional full-service quotes from local contractors. However, this "equipment-only" route shifts the responsibility of sizing and installation logistics onto you. The 3-Step Online Buying Process buy hvac units online
: You can purchase directly from wholesale sites like AC Direct or HVACDirect.com . These sites often provide filters for SEER2 ratings, fuel types (gas vs. electric), and brands. : This is the most critical step