Top 7 Things You Should Never Do To Your AC Unit

image of the number 7 depicting diy air conditioner maintenance tasks

In the scorching heat of summer, relying on your cooling system becomes crucial. As a homeowner on a budget, taking a DIY approach may seem appealing, but there are certain areas where expertise and training are necessary. This is particularly true when servicing your air conditioning system or attempting DIY air conditioner maintenance.

Working on such a vital home appliance requires caution and knowledge. You wouldn’t want to make uninformed guesses that could jeopardize your family’s safety and well-being. HVAC specialists emphasize the importance of diligent care to prevent costly problems. Following the advice of certified air conditioning technicians is key to maintaining steady efficiency and ensuring the comfort of your family.

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Seven Things You Should Not Do To Your Home Air Conditioning Unit

The following sections will delve into important aspects of air conditioner preventative maintenance.

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1. Inspect & Change The Air Filter Regularly

image of a dirty air filter for an air conditioner causing air conditioner issues

One of the advantages of an AC system is its ability to enhance indoor air quality by filtering out dust and contaminants. However, HVAC air filters require regular attention as they do not clean or replace themselves. Neglecting to check and change filters can lead to declining air conditioning efficiency and home comfort. Check air filters monthly and replace them at least every two to three months. If you have pets, more frequent filter replacements may be necessary. If you don’t know how to inspect and change the AC air filter, ask your HVAC technician to demonstrate the process during your next air conditioner tune-up.

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2. Do Not Block The Air Conditioning Condenser

Proper clearance around the outside condenser is crucial for its optimal performance. It needs ample room to pull in air efficiently. While it may be tempting to incorporate landscaping around the outside unit, caution should be exercised. Placing objects near the unit can hinder the airflow, resulting in decreased cooling capacity and increased energy consumption. Maintaining a clear area around the condenser allows for optimal airflow, promoting cost-efficiency and preserving the lifespan of the unit.

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3. Do Not Crank The AC Unit

image of homeowner adjusting air conditioner thermostat fan settings

If your air conditioner runs continuously, it could indicate extreme heat in your area or a high setting on your thermostat. While there may be days when increased usage is necessary, setting the thermostat at the highest comfortable temperature is advisable. Take advantage of cooler nights and days to give your AC unit some rest. The longer your air conditioner runs, the harder its components work and the more refrigerant it consumes. By finding a balance between comfort and energy efficiency, you can maximize the performance of your air conditioning system and minimize excessive wear and tear.

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4. Do Not Leave Your Air Conditioner Off Too Long

While keeping your home air conditioning off for extended periods may seem beneficial, it is important to remember that your cooling unit requires a regular operation. Even when the outside temperatures are not excessively high, you must turn on your air conditioner and let it run for a few minutes every day or two. This practice prevents dust and mold from settling inside the unit, allowing optimal functioning and good indoor air quality. By allowing the system to run periodically, you can preserve its efficiency and extend its lifespan while keeping your home clean, comfortable, and free from potential contaminants.

Related Article: Tell-Tale Signs Of An Overcharged Air Conditioner

5. Do Not Power Wash An AC Unit

image of a power washer depicting never power wash your air conditioner

Cleaning your air conditioner is essential, but using a power hose or submerging it in water is not recommended. Instead, gently remove leaves and debris from the outdoor unit and wipe the inside to maintain cleanliness. For more extensive cleaning, rely on certified and experienced HVAC technicians with the expertise to perform the task correctly. Don’t hesitate to schedule an air conditioner tune-up so your unit receives the professional care it requires.

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6. Schedule Regular Air Conditioner Tune-ups 

image of an hvac contractor performing an air conditioner tune-up

Regular annual inspections and tune-ups for your air conditioning system can prevent minor issues from escalating into costly and significant problems. Neglecting to have your system checked and maintained increases the risk of the following:

  • frequent breakdowns
  • reduced efficiency
  • expensive repairs

By scheduling an air conditioning team to inspect and maintain your system, you can alleviate concerns about unexpected breakdowns during critical times when you rely on your cooling unit the most. HVAC tune-ups not only help lower your energy costs but also prolong your system’s lifespan. If you haven’t already scheduled an air conditioner tune-up, now is the perfect time to do so. 

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7. Do Not Perform DIY AC Repairs

When it comes to the maintenance, troubleshooting, and repairs of your AC system, it is crucial to recognize that expertise and experience are essential. Without proper training, you may lack the knowledge to handle the system’s intricacies effectively. Remember, even small mistakes can result in significant costs down the line. 

It is always wise to rely on experienced and certified HVAC professionals for air conditioner installation, maintenance, or service tasks. Before choosing a service provider, conduct a thorough research by reviewing references, checking customer reviews, and verifying licensing and insurance coverage. Trusting the right professionals guarantees that your valuable and expensive home cooling system receives the high-quality work it deserves.

Related Article: Steps to Take When Your Air Conditioner Won’t Turn On


A reliable home air conditioning system is vital during the hot summer. Make sure that you maintain a clean air filter, monitor the functioning of the machinery, and allow it to rest as needed. Avoid obstructing the condenser and exercise caution when cleaning. It is also essential to schedule an annual air conditioner tune-up for optimal performance. To take the best care of your cooling system, rely on the expertise and guidance of your local certified HVAC professionals.

When you require highly-rated, top-quality service at competitive prices, look no further than Miller Oil Company. As a trusted local HVAC service provider, we guarantee your satisfaction and offer expert solutions for all home cooling requirements. Contact us today to experience our exceptional professional service.

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Related Article: 7 Reasons Your Filter Isn’t Improving Your Indoor Air Quality

Call Miller Oil Company For All Of Your HVAC Requirements

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At Miller Oil Company, we take pride in delivering top-notch heating and cooling services to both residents and businesses in the greater Enfield, Connecticut area. Our team comprises highly skilled and certified technicians who excel in HVAC tune-ups, repairs, installations, and replacements. With their expertise, training, and experience, you can trust that your HVAC system will be serviced to the highest standards.

Miller Oil Company is committed to providing the most cost-effective and competitive pricing for heating and cooling services in the region. Our maintenance services are designed to enhance comfort, improve energy efficiency and HVAC costs. Should you require HVAC repairs or a replacement system, our knowledgeable technicians will recommend the best options that suit your home and budget. We stand behind our HVAC work with a satisfaction guarantee. Contact Miller Oil Company today to schedule a service appointment, and don’t forget to ask about our free, in-home estimates.

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To schedule a service appointment, contact Miller Oil Company today. We also offer free, in-home estimates. Click the link to view our service area.