An HVAC hard start kit is a device designed to help an air conditioner or heat pump compressor start more easily and efficiently. It provides an extra electrical boost when the compressor kicks on, reducing strain on the system and extending the lifespan of the unit.


How Does a Hard Start Kit Work?

  • When an air conditioner or heat pump starts up, the compressor requires a large surge of power to get moving.
  • A hard start kit stores electrical energy and releases it in a quick burst to help the compressor start up with less effort.
  • Once the compressor is running, the kit disengages, allowing the system to operate normally.

This is especially useful for older HVAC units, systems that struggle to start, or homes with low-voltage power issues.


Benefits of a Hard Start Kit

Reduces Wear on the Compressor – Extends the lifespan of the most expensive part of your AC or heat pump.
Improves Startup Efficiency – Lowers the amount of electricity needed to start the system.
Prevents "Hard Starts" (Short Cycling) – Reduces the loud clunking noise or hesitation when the unit starts.
Helps in Low-Voltage Situations – Useful in areas with unstable power supplies.
Can Prevent Breaker Trips – Reduces the likelihood of circuit breaker overloads.


When Do You Need a Hard Start Kit?

🔹 Your AC or heat pump struggles to start or makes a loud noise when turning on.
🔹 You notice frequent breaker trips related to your HVAC system.
🔹 You have an older compressor that’s harder to start.
🔹 You live in an area with low or fluctuating voltage.


Does Your HVAC System Need a Hard Start Kit?

Not every system requires one, but if your compressor is struggling, installing a hard start kit can provide extra support and extend the life of your unit. If you're in the Philadelphia area, McCorry Comfort can help determine if a hard start kit is right for your system!