How To Choose The Right Hard Start Kit?

by | Feb 12, 2023 | AC Maintenance

Starting an HVAC compressor can be a nightmare, especially if your fan is reluctant to run during the hot summer months. This is where a hard start kit comes into play. It’s a device that can help you start the compressor successfully so your AC system can start functioning normally. But, with so many hard start kits available in the market today, it can be challenging to know which one to choose. This article will guide you through the process of selecting the right hard start kit for your compressor.

1. Understanding the Importance of a Hard Start Kit

A hard start kit is an essential component of HVAC systems that helps the compressor start efficiently. HVAC systems need hard start kits to give the compressor the necessary boost of energy to start up smoothly, especially when there is a power surge or when it’s too cold. Without a hard start kit, the compressor can become damaged and ultimately fail, leading to costly repairs.

What Happens Without a Hard Start Kit

Compressors are mechanical devices that rely on electricity to start running. However, sometimes the amount of power they need to start running exceeds the amount of electricity coming into the unit. In this case, a hard start kit provides a boost of energy to the compressor, enabling it to start up quickly and efficiently. Without a hard start kit, the compressor will struggle to start up, leading to high energy consumption, reduced efficiency, and ultimately, compressor failure.

The Benefits of Having a Hard Start Kit

When you have a hard start kit installed in your HVAC system, you can enjoy several benefits. These include improved compressor efficiency, reduced energy consumption, and increased lifespan of the compressor. With a hard start kit, your HVAC system is better equipped to handle power fluctuations, protecting your equipment from damage, and saving you money on costly repairs.

Investing in a hard start kit can be an excellent way to ensure that your HVAC system functions optimally and to avoid costly repairs in the future. It’s important to choose the right kit for your specific needs, taking into consideration the factors discussed in the next section.

2. Factors to Consider When Choosing a Hard Start Kit

Choosing the right hard start kit can be a daunting task, considering the different types of kits available in the market. You need to take into account specific factors to ensure you get the appropriate hard start kit for your HVAC system. Below are some factors you should consider when choosing a hard start kit for your HVAC system.

1. Voltage

The first and most important factor to consider is voltage. It is vital to get the right voltage of the hard start kit for your HVAC system. If you purchase a kit with a voltage rating that is too low, it may not be able to start the compressor, whereas if you choose one with a voltage rating that is too high, it may damage your compressor.

2. Compressor Size

The size of the compressor is also essential when choosing a hard start kit. The kit you select should be compatible with the size of your compressor. If you choose an oversized kit for a small compressor, it may overwork the compressor, causing it to fail.

3. Type of Compressor

Another factor to consider when choosing a hard start kit is the type of compressor in your HVAC system. Different types of compressors require different types of hard start kits. For instance, a reciprocating compressor requires a different type of hard start kit from a scroll compressor.

In conclusion, choosing the right hard start kit is crucial to ensure the efficient and safe operation of your HVAC system. You can consult with an HVAC expert to help you choose the right kit and install it correctly.

3. Different Types of Hard Start Kits

A hard start kit helps to provide the necessary power boost to the compressor during the initial start-up, enabling it to function smoothly. There are three primary types of hard start kits, which differ in the components used in the kit and the functionality they offer.

1. Potential Relay Hard Start Kit
The potential relay hard start kit comprises a relay, start and run capacitors, and a potential relay. It is an affordable option that works best for residential and light commercial units under 5 tons. The potential relay is responsible for disconnecting the start capacitor and ensuring that the compressor operates with a single run capacitor once it reaches the desired speed.

2. Solid State Hard Start Kit
The solid-state hard start kit uses a microprocessor and voltage sensing technology to provide the required power boost to the compressor. It is a reliable and durable alternative that offers better performance than the potential relay hard start kit. The solid-state hard start kit includes a start capacitor, a run capacitor, and a solid-state module.

3. Current Relay Hard Start Kit
The current relay hard start kit uses amperage sensing to detect the start-up of the compressor. It contains a relay, a start capacitor, and a current relay. The current relay hard start kit is ideal for large commercial units and systems that require heavy-duty operation. It ensures the compressor receives the required power boost and protects against premature failures.

Choosing the right hard start kit can be a daunting task, but understanding the differences between the three major types can help you make an informed decision. You should consider the size and type of the HVAC system, as well as the specific needs of the compressor when picking a hard start kit. By selecting the right hard start kit, you can prevent damage to the compressor, improve its efficiency, and extend its lifespan.

4. Tips for Installing a Hard Start Kit

Installing a hard start kit can be quite challenging, even for experienced HVAC technicians. The process can be complicated, and even a small mistake can result in an inefficient system that can lead to significant electrical and mechanical issues down the line. To help ensure a smooth and successful installation, here are some valuable tips you should follow.

Test Your Capacitors

Before you start the installation process, it is essential to test your capacitors to ensure they are in good working condition. The hard start kit requires a functioning capacitor to work correctly. If your capacitor is faulty, it may be best to replace it before installing the hard start kit.

Read the Manufacturer’s Instructions Carefully

It is vital to read the manufacturer’s instructions carefully before starting the installation process. Follow each step, and take note of any important details like the type of wiring needed, specific placement of components, and any additional parts required. If you are not sure about anything, don’t hesitate to contact the manufacturer’s technical support team for guidance.

Choose the Right Location for the Hard Start Kit

Choosing the right location for the hard start kit is crucial for the unit’s optimal performance. The kit should be placed close to the compressor or condenser unit and away from any moving parts. Also, the location must protect the kit from any moisture or water damage. Make sure you secure the hard start kit properly, as it may vibrate during operation.

Use the Right Tools

Using the correct tools is non-negotiable when it comes to HVAC installations. Make sure you have all the necessary tools and equipment before you start the installation process. You may need needle-nose pliers, wire strippers, duct tape, and other tools depending on your HVAC system and the type of hard start kit you are installing.

By following these tips, you can increase the chances of a successful hard start kit installation. Remember, when in doubt, seek assistance from a professional HVAC technician or the manufacturer’s technical support team.

5. Potential Risks of Choosing the Wrong Hard Start Kit

How To Choose The Right Hard Start Kit

Choosing the wrong hard start kit for your HVAC system can lead to various risks. These include but are not limited to:

  • Damaging the Compressor: Using a hard start kit that is too powerful can cause damage to your compressor, leading to costly repairs or even needing to replace the entire unit.
  • Inefficient Operation: A hard start kit that is not compatible with your HVAC system can cause it to operate less efficiently, leading to higher energy bills and reduced performance.
  • Increased Wear and Tear: A hard start kit that is too weak for your system can cause more wear and tear on other components, leading to premature failure and the need for more repairs.

It is important to always choose the correct hard start kit for your HVAC system to avoid these potential risks. Consult with a professional HVAC technician or refer to the manufacturer’s specifications for guidance.

6. Best Hard Start Kits for Different HVAC Systems

How to Choose the Right Hard Start Kit?

In this section, we will discuss the . It is important to choose the right hard start kit for your specific HVAC system to ensure proper functioning and avoid potential risks. Here are some top options:

1. Supco SPP6 Super Boost Hard Start Kit

The Supco SPP6 Super Boost Hard Start Kit is a popular choice for AC units and heat pumps. It is easy to install, with a simple two-wire connection. This kit is designed to boost compressor starting torque by up to 500%, reducing the time it takes for your HVAC system to start and increasing its efficiency. It is compatible with most 115V, 208V, and 230V systems.

2. 5-2-1 Compressor Saver Hard Start Kit

The 5-2-1 Compressor Saver Hard Start Kit is another highly rated option for AC units and heat pumps. It provides increased starting torque, as well as protection against power surges and voltage drops. This kit has a universal design that can be used with most HVAC systems and is easy to install with a step-by-step guide.

3. Rectorseal Kickstart T05 Hard Start Kit

The Rectorseal Kickstart T05 Hard Start Kit is specifically designed for single-phase compressor units. It provides up to 600% more starting torque and can be installed in just a few minutes with a simple four-wire connection. This kit includes a surge protector to prevent damage from power surges and is compatible with 115V and 230V systems.

When choosing a hard start kit for your HVAC system, it is important to consider factors such as the type of system you have, the voltage and amperage it requires, and the size of the compressor. It is also important to follow proper installation instructions to avoid potential risks and ensure optimal performance. Consult an expert or manufacturer recommendations to make an informed decision.

7. Expert Recommendations for Choosing the Right Hard Start Kit

.

In this section, we will provide you with for your HVAC system. These recommendations are based on years of experience in the HVAC industry and a thorough understanding of the various types of hard start kits available in the market.

1. Consult with an HVAC professional

Our first recommendation is to consult with an HVAC professional before choosing a hard start kit. This is because they have the expertise to identify the right hard start kit for your specific HVAC system. A professional can also help you avoid potential risks associated with choosing the wrong hard start kit, such as damaging your compressor or other essential components.

2. Consider the type of compressor in your HVAC system

The type of compressor in your HVAC system is an essential factor to consider when choosing a hard start kit. For instance, if your HVAC system has a reciprocating compressor, a potential recommendation is a potential relay hard start kit. However, for HVAC systems with scroll compressors, experts recommend using a start assist kit.

3. Choose a hard start kit that matches your HVAC system

Another expert recommendation for choosing the right hard start kit is selecting one that matches your HVAC system’s make and model. This is because different HVAC systems require various hard start kits, and using the wrong one can lead to costly repairs.

In conclusion, these are just some of the . It’s crucial to do your research to find out more about the different types of hard start kits available in the market. Consulting with an HVAC professional can also help you make an informed decision when selecting a hard start kit for your HVAC system.

People Also Ask

What is a hard start kit?

A hard start kit is a device that helps a compressor start up efficiently by providing extra torque during its starting process. It is usually added to air conditioning units or heat pumps that frequently experience difficulty starting up.

When should I install a hard start kit?

If an air conditioning unit or heat pump frequently experiences difficulty starting up or needs multiple attempts to start, it is a good idea to install a hard start kit. This can also help extend the lifespan of the compressor and save on energy costs.

What types of hard start kits are there?

There are two main types of hard start kits: potential relay and solid state. Potential relay hard start kits consist of a relay and a start capacitor, while solid state hard start kits use a microprocessor to control the start capacitor’s voltage.

How do I choose the right hard start kit?

To choose the right hard start kit for your unit, you should consider the size and type of your compressor, the voltage and amperage ratings, and whether you need a potential relay or a solid state kit. It is important to consult with a professional to ensure proper installation.

Can I install a hard start kit myself?

While it is possible to install a hard start kit yourself, it is recommended to have a professional do it instead. Incorrect installation can lead to damage to the unit or personal injury.

Conclusion

A hard start kit can be a valuable addition to an air conditioning unit or heat pump that’s having trouble starting. When choosing a hard start kit, it’s important to consider the type and size of the compressor, the voltage and amperage ratings, and whether a potential relay or solid state kit is needed. Professional installation is also recommended for best results.