Uploaded May 2026 | Updated September 2026, 3 weeks ago
Every HVAC tech needs a solid rule of thumb — and this one is non-negotiable. Before you hook up your gauges, you should always know your expected suction pressure. No guessing. No feeling your way through the job.
The Rule: Suction saturation should run 30–35°F under ambient. Know it. Use it. Every time.
In this clip, we also cover:
How to cross-check your tools to make sure your readings are accurate
Why knowing your indoor conditions is the key to interpreting suction pressure correctly
How experienced techs can estimate suction line temperature before they even touch the line
Whether you're a new tech or brushing up on the fundamentals, this is the kind of foundational thinking that separates good diagnostics from great ones.
Every HVAC tech needs a solid rule of thumb — and this one is non-negotiable. Before you hook up your gauges, you should always know your expected suction pressure. No guessing. No feeling your way through the job.
The Rule: Suction saturation should run 30–35°F under ambient. Know it. Use it. Every time.
In this clip, we also cover:
How to cross-check your tools to make sure your readings are accurate
Why knowing your indoor conditions is the key to interpreting suction pressure correctly
How experienced techs can estimate suction line temperature before they even touch the line
Whether you're a new tech or brushing up on the fundamentals, this is the kind of foundational thinking that separates good diagnostics from great ones.
