HVAC Tips
How to Clean an A-Coil Safely Without Bending the Fins or Ruining the Drain Pan
Tony explains how to safely clean your A-coil without damaging fins or the drain pan, restoring airflow, preventing freezing, and keeping your HVAC system efficient.
Drain Pan & Condensate Issues: Tony Explains Why A-Coils Flood Basements Every Summer
Tony explains the real causes of A-coil drainage failures—bad traps, wrong coil orientation, clogged drains, improper pitch—and how they flood homes every summer.
Why Your A-Coil Freezes Up — And Why It’s Not the Refrigerant’s Fault Most of the Time
Tony explains the REAL causes of frozen A-coils—airflow problems, dirty coils, weak blowers, bad ductwork, and installation mistakes—not “low refrigerant.”
Common A-Coil Installation Mistakes Tony Sees (And How They Destroy Equipment)
Tony reveals the most common A-coil installation mistakes—airflow errors, drain issues, TXV mismatches, bad brazing—and how they destroy HVAC performance fast.
Upflow vs. Downflow Installation: Which One Does YOUR System Actually Need?
Tony explains how upflow vs downflow installation affects drainage, airflow, refrigerant flow, humidity control, and the overall performance of your Goodman A-coil.
How to Match This A-Coil to the Right Goodman Condenser (Or You’ll Kill Efficiency)
Tony explains why matching your A-coil and condenser using AHRI standards is essential for cooling performance, humidity control, compressor safety, and SEER2 efficiency.
3.5 Ton vs. 5 Ton A-Coils — Why Bigger Is NOT Always Better
Tony explains why choosing a 3.5-ton vs. 5-ton A-coil isn’t about “more cooling.” Oversizing destroys humidity control, airflow, efficiency, and comfort.
What Exactly Does an A-Coil Do? Tony Explains Why Your System Depends on It
Tony explains what an A-coil actually does, how it cools your home, why airflow and installation matter, and why the A-coil—not the condenser—determines comfort.
120V vs. 240V vs. Multi-Tap Transformers: Which One Do You Actually Need for Your System?
Tony breaks down 120V, 240V, and multi-tap HVAC transformers—how they work, which systems use which input voltage, and how to choose the right one every time.
Low Voltage Issues in HVAC Systems: How a Weak Transformer Causes Big Problems
Tony explains how low voltage from a weak transformer causes buzzing contactors, dead thermostats, zoning issues, and unpredictable HVAC failures—and how to fix it.
Why Your Furnace Fuse Keeps Blowing (And Why Replacing the Transformer Isn’t the Fix)
Tony explains why furnace fuses keep blowing—shorted wires, contactor issues, humidifier overload, and why replacing the transformer never fixes the real problem.
How to Test a Transformer With a Multimeter (Tony’s Foolproof Method)
Tony shows how to test an HVAC transformer with a multimeter—primary voltage, secondary output, load testing, shorts, failures, and foolproof 24V diagnosis.