Mar 16th 2026
Quick Answer Box What are the standard HVAC wiring color codes? While not always followed, the standard thermostat wiring color code is: Red (R) for 24V power, White (W) for heat, Yellow (Y) for cooli…
Published by HVACProSales Team
Mar 16th 2026
Quick Answer Box Why is my heat pump not working? Common heat pump problems include incorrect thermostat settings, dirty air filters, or a tripped breaker. For more complex issues, it could be a refri…
Published by HVACProSales Team
Mar 16th 2026
Quick Answer Box What is the best HVAC leak detector? The best HVAC leak detector for most technicians in 2026 is an infrared (IR) or heated diode model. Top-rated choices include the Fieldpiece DR82…
Published by HVACProSales Team
Mar 16th 2026
Quick Answer Box What does an HVAC contactor do? An HVAC contactor is a heavy-duty electrical switch that controls the flow of high-voltage power to the outdoor unit's compressor and condenser fan mot…
Published by HVACProSales Team
Mar 16th 2026
Quick Answer Box What size capacitor do I need for my HVAC unit? The correct HVAC capacitor size (measured in microfarads, MFD or µF) is determined by the compressor and fan motor specifications. A 2-…
Published by HVACProSales Team
