The Top 5 Air Conditioner Mistakes and How to Avoid Them

air conditioning

Navigating the complex world of air conditioning can sometimes feel overwhelming, especially when trying to maintain the perfect balance of comfort and cost-efficiency in your home. At Waza Home Comfort, we understand the frustrations that come with common air conditioner mishaps. That’s why we’ve developed a straightforward guide to identify and avoid the frequent mistakes that might be hindering your system’s performance. By addressing these errors, we aim to help you enhance both the efficiency and longevity of your air conditioning unit.

From neglecting routine maintenance to selecting the incorrect size for your living space, each misstep carries its own set of complications. However, with our expert advice, you can navigate these challenges with confidence. We also shed light on how to spot less obvious pitfalls, such as potential scams within the HVAC industry, ensuring you’re equipped with the knowledge to protect your investment. Join us as we explore actionable insights designed to optimize your air conditioning system and ensure year-round comfort in your home.

Ignoring Regular Maintenance: The #1 AC Mistake

When it comes to air conditioners, one of the biggest mistakes we often see is the neglect of regular maintenance. Many of us assume that once an AC unit is installed, it can be left to run indefinitely without much care. However, regular maintenance is crucial to ensure that your air conditioner continues to operate efficiently and effectively. Neglecting this can lead to reduced efficiency, higher running costs, and even system breakdowns. One should ideally schedule a professional maintenance check at least once a year; this not only ensures optimal performance but also extends the lifespan of the unit.

During these maintenance checks, various components of the AC system, including filters, coils, and fins, must be inspected, cleaned, or replaced. Dirt and neglect are the top causes of HVAC system inefficiency and failure. By keeping your system clean and ensuring that it’s checked by professionals, you prevent the common pitfalls that could lead to bigger issues down the line.

Improper Thermostat Settings: Finding the Right Balance

Setting the thermostat incorrectly is another common error that can compromise both your comfort and your wallet. Often, we might set our AC to a much lower temperature, thinking it will cool the space faster. However, air conditioners work most efficiently when they are set to gradually reach the desired temperature. Moreover, each degree of cooling below your usual comfort range can significantly increase your energy consumption and costs.

To find the perfect balance, we recommend setting your thermostat at a comfortable yet energy-efficient temperature. During summer, setting your thermostat to about 25-26 degrees Celsius when you are at home and increasing it by a few degrees when you are away can help reduce your cooling costs significantly. Additionally, consider using programmable or smart thermostats. These devices automatically adjust the temperatures based on your schedule and preferences, ensuring comfort when you’re home and energy savings when you’re not. By optimizing your AC settings, you not only save energy but also enhance the longevity of your unit by preventing it from overworking.

Choosing the Wrong Size Air Conditioner for Your Space

Selecting the correct size for your air conditioner is crucial for ensuring the comfort, efficiency, and longevity of the system. A common error many homeowners make is choosing an AC unit that is either too large or too small for their space. A unit that’s too large will cycle on and off too frequently, which not only wastes energy but also fails to properly dehumidify your air, leading to a clammy feeling environment. On the other hand, an undersized unit will run continuously, struggling to cool your space efficiently and increasing your energy bills in the process.

When we assist in choosing the right size air conditioner, we consider several factors beyond just the square footage of your space. These include ceiling height, window size and location, insulation quality, and even the heat generated by appliances. By taking a comprehensive approach, we ensure that the unit selected is perfectly suited to your home’s unique characteristics, providing optimal cooling without wasteful over-exertion or unnecessary energy expenditure.

Recognizing and Avoiding HVAC Service Scams

In the HVAC industry, unfortunately, there are less-than-reputable practitioners who can turn a necessary home improvement into a costly mistake. To safeguard against scams, it’s important to be aware of common red flags. One major sign of a scam is when a technician does not perform basic checks, such as inspecting the filter or verifying the thermostat settings, before diagnosing a system with a major problem. If a technician immediately suggests expensive repairs or replacements without a detailed explanation or visible proof of failure, this should raise your suspicions.

To protect ourselves and our customers, we always recommend seeking second opinions for expensive repairs and choosing service providers with verified reviews, proper certifications, and a good reputation in the community. It is also beneficial to familiarize yourself with your AC system’s basic operations so you can ask informed questions and understand the technician’s explanations. By being cautious and educated, we can avoid falling victim to scams and ensure our air conditioning systems are serviced by trustworthy professionals.


Navigating the complexities of air conditioning repair, sizing, and servicing doesn’t have to be a daunting task. By understanding the top causes of HVAC inefficiency and how to avoid them, we position ourselves to enjoy a cooler, more comfortable home environment while avoiding unnecessary costs and complications. 

At Waza Home Comfort, we are dedicated to helping you make informed decisions about your HVAC needs. Whether you’re looking to properly size your AC unit, need reliable maintenance, or require advice on avoiding service scams, we are here to offer our expertise.

If you suspect your air conditioning system might not be running as efficiently as it could be, don’t hesitate to contact us at Waza Home Comfort. Let us help you optimize your home’s cooling system for maximum comfort and efficiency.


As an owner-operated local company that has been in business for over 19 years, we are proud to accept Homestars ‘Best of’ Award for our 12th consecutive year in a row. Here’s to a great year, and many more to come.