This table is the result of extensive research into how various side discharge HVAC systems perform under extreme summer conditions common in Arizona cities like Phoenix, Tempe, Mesa, Chandler, and Gilbert. While many systems are rated as 3 Ton, most do not deliver full capacity when outside temperatures exceed 104°F — a common reality in our climate.

Traditionally, installers have assumed older 3 Ton systems produce around 2.5 Ton in high heat. However, recent side discharge condensers often underperform even further, sometimes producing only 2 Ton or less. This performance gap has led to discomfort, inefficiency, and incorrect system sizing.

To address this, we created a list of HVAC models that, although not rated to deliver a full 3 Ton, come closest to doing so in our real-world testing. The recommendations here are grounded in our previous installation practices and climate-specific performance data, helping you select the most reliable system for your conditions.  [Note: This list is only for Side Discharge Condenser Units]