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Air Conditioner Compressor Start Assist Kit

HVAC Tips & Tricks

Compressor Start Assist: What Is It and Why Your HVAC System Needs It?

 At Reeis, we understand that your HVAC system’s compressor is the heart of your air conditioner or heat pump, responsible for circulating refrigerant and ensuring your home stays comfortable. However, starting up the compressor can place a significant strain on your system, especially in older units or in extreme weather conditions. A compressor start assist is a valuable upgrade that can enhance performance and extend the life of your system. But what exactly is it, and how does it work? Let’s dive in.

What is a compressor start assist?

A compressor start assist is an electrical component designed to give your HVAC compressor an extra boost during startup. It consists of a start capacitor and a potential relay, which work together to momentarily provide additional power to the compressor, helping it start more efficiently.

How does an HVAC performance start assist work?

When your air conditioner or heat pump turns on, the compressor requires a surge of energy to begin operation. A start assist kit reduces the strain by:

  • Delivering a temporary high-voltage boost to the compressor.
  • Allowing the compressor to start faster and more smoothly.
  • Reducing the wear and tear caused by hard starts.

Once the compressor reaches its normal operating speed, the start assist disengages, and the system continues running as usual.

Signs your HVAC system may need a compressor start up capacitor

If your HVAC system struggles to start or exhibits any of the following signs, a compressor start assist may be a beneficial upgrade:

  • Frequent tripped breakers – A struggling compressor can cause electrical issues.
  • Loud startup noises – A hard-starting compressor may make loud clicking or humming sounds.
  • Delayed or failed startups – If your system takes longer than usual to start or doesn’t start at all, it could be due to a weak compressor.
  • Older HVAC systems – Aging compressors often require additional support to function efficiently.

Benefits of installing a compressor performance boosting kit

  • Extended Compressor Life – Reduces wear and tear, preventing premature failure.
  • Lower Energy Consumption – Reduces the initial power surge, improving efficiency.
  • Improved System Reliability – Helps prevent startup failures and unnecessary service calls.
  • Enhanced Performance in Extreme Weather – Ensures smooth startups even in hot or cold conditions.

Risks of not installing an air conditioner start assist kit

If your HVAC system struggles to start without a compressor start assist, you may experience:

  • Increased strain on the compressor, leading to early failure. 
  • Higher energy bills due to inefficient startups.
  • Frequent system breakdowns and costly repairs. 

Reduced comfort as your system struggles to maintain temperature.

Is a compressor start assist kit right for your HVAC System?

While not every HVAC system requires a start assist, it is particularly beneficial for older units, systems with long refrigerant line runs, or areas with frequent power fluctuations. If you’ve noticed any of the warning signs above, it’s worth having a Reeis professional assess your system.

Final thoughts on the hard start kit

A compressor start assist is a simple, yet effective upgrade that can improve your HVAC system’s performance, efficiency, and longevity. If your system shows signs of hard starts or inefficiency, installing a start assist may help prevent costly repairs and ensure reliable operation. Contact Reeis today to determine if a start assist is the right solution for your home.

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Frequently Asked Questions

Why is maintenance important for your air conditioning and heating system?

Regular air conditioning maintenance is essential to keep your HVAC system running efficiently, reliably, and cost-effectively. Scheduling REEIS Advanced A/C maintenance help prevent unexpected breakdowns, extend the lifespan of your unit, and improve energy efficiency, leading to lower utility bills.

Neglecting AC maintenance can result in higher energy consumption, expensive repairs, and poor cooling performance, especially during the hottest months. REEIS Advanced A/C maintenance include: condenser coil cleaning, checking refrigerant levels, testing electrical components, and airflow, ensuring your system performs at its best.

Schedule an Advanced A/C tune up with REEIS Air Conditioning to maximize comfort, minimize costs, and protect your investment in Phoenix, Scottsdale, Paradise Valley, Mesa, Tempe and surrounding areas.

What is considered an evidence based HVAC recommendation?

Every component of a HVAC recommendation should be supported by evidence. Evidence should come in the form of a reading, a picture or a technician physically showing you the condition or product they are recommending.

Most air conditioning companies, not REEIS, pay their technician with 100% commission. When a technician is paid only if they sell a product or service it can result in a technician recommending a product or service you may not need. It is always recommended that you request the technician provide you the evidence of the recommendation.

Do air conditioning system have parts which wear out?

Yes. Several air conditioning parts are wear out parts. Just like any car, there are several components which should be replaced as they are beyond their useful life. If you neglect the worn part replacement, larger, more expense repairs may result.

How long does a heating and air conditioning system typically last?

In our Phoenix's extreme climate, air conditioning systems typically have a 10 to 12 year lifespan. Well maintained systems can last significantly longer.

How often should I replace my air conditioning system's filters?

In Phoenix's heavy air conditioning use, most systems require filter changes a minimum of 30 days. Larger format filter such as the REEIS Performance Filters can last as long as 6 months.

If you do not change your filters regularly, you will restrict air flow and allow dirt to infiltrate your HVAC system. Dirt is the enemy of your heating and air conditioning system. If interior components get dirty, the performance of the system is significantly impacted. Interior components such as coils and blower wheels are expensive to clean.

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