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  • Mar 16th 2026

    What is a TXV in HVAC? A Complete Guide for Technicians

    Quick Answer Box What is a TXV in an HVAC system? A TXV, or Thermostatic Expansion Valve, is a metering device that controls the amount of liquid refrigerant entering the evaporator coil. It modulates…

    Published by HVACProSales Team

  • Mar 16th 2026

    How to Clean an HVAC Flame Sensor: A Step-by-Step Guide

    Quick Answer Box How do you clean an HVAC flame sensor? To clean a flame sensor, first, turn off all power to the furnace. Remove the sensor, which is a thin metal rod located in the path of the burne…

    Published by HVACProSales Team

  • Mar 16th 2026

    AC Compressor Not Starting? A Technician's Troubleshootin...

    Quick Answer Box Why is my AC compressor not starting? An AC compressor typically fails to start due to electrical issues. The most common culprits are a failed capacitor, a faulty contactor, or a tri…

    Published by HVACProSales Team

  • Mar 16th 2026

    Mini Split Error Codes Explained

    Quick Answer Box What do mini split error codes mean? Mini split error codes are diagnostic signals indicating a specific problem. Common codes include E1 (communication error between indoor and outdo…

    Published by HVACProSales Team

  • Mar 2nd 2026

    Mini Split Not Heating: A Complete Troubleshooting Guide

    Mini Split Not Heating: A Complete Troubleshooting Guide A mini-split heat pump that’s not heating is a common issue that can leave your customers in the cold. The causes can range from simple…

    Published by HVACProSales Team

  • Feb 16th 2026

    Mini Split Not Cooling: A Complete Troubleshooting Guide

    Mini Split Not Cooling: A Complete Troubleshooting Guide A mini-split system that’s not cooling is a common complaint that can have a wide range of causes, from simple issues like a dirty filt…

    Published by HVACProSales Team

  • Jan 26th 2026

    AC Compressor Won't Start

    AC Compressor Won’t Start: A Technician's Troubleshooting Guide An air conditioner's compressor is the heart of the system, responsible for circulating refrigerant and enabling the cooling pro…

    Published by HVACProSales Team

  • Jan 19th 2026

    Condensate Pump Not Draining: HVAC Troubleshooting Guide

    Condensate Pump Not Draining: A Comprehensive HVAC Troubleshooting Guide A condensate pump is a small but critical component in many HVAC systems, especially those with indoor air handler units locat…

    Published by HVACProSales Team

  • Jan 12th 2026

    MRCOOL Mini Split Error Codes: E1 & P4 Troubleshooting Guide

    MRCOOL Mini Split Error Codes: E1 & P4 Troubleshooting Guide MRCOOL mini-split systems have become a popular HVAC solution for homeowners and contractors alike, thanks to their energy efficiency, eas…

    Published by HVACProSales Team