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Choosing the Right Air Filter for Your Home

January 24, 2024

When your air conditioner suddenly stops keeping your home cool, it’s not just an inconvenience—it can disrupt your entire day, especially during Indiana’s and Lower Michigan’s hot and humid summer months. While some HVAC issues require professional repair, many common problems start small and can be caught early with a little know-how.

In this air conditioning system troubleshooting guide, we’ll walk you through the most frequent repair issues homeowners face, how to identify them, and when it’s time to call in the experts. Whether you’re a DIY-savvy homeowner or simply looking to stay informed, this guide helps you recognize warning signs and understand what your system is telling you.

1. Your AC Isn’t Cooling Properly

Possible Causes:

  • Dirty Air Filter: One of the most overlooked culprits. A clogged filter restricts airflow, reducing system efficiency and cooling capacity.
  • Thermostat Issues: If your thermostat isn’t working correctly, has dead or weak batteries, or is placed in direct sunlight, it may misread the indoor temperature and cause your AC to run inefficiently.
  • Low Refrigerant Levels: A refrigerant leak can prevent your system from absorbing enough heat from your home.

Troubleshooting Tips:

  • Check and replace your air filter monthly during peak cooling seasons.
  • Make sure your thermostat is set to “cool” and placed away from heat sources.
  • If air is blowing but not cold, contact a professional to check for refrigerant leaks—this requires handling by an EPA-certified technician, and all of Goff’s service experts meet this certification standard.

⚠️ Refrigerant Handling Warning:

Federal law prohibits anyone without proper EPA Section 608 Certification from handling refrigerants like R-410A. This includes checking, refilling, or repairing refrigerant lines. Improper handling not only poses serious health and safety risks—including frostbite, respiratory issues, or chemical burns—but can also damage your AC system and violate environmental regulations.

All Goff Heating and Air Conditioning service technicians are certified and trained to safely handle refrigerants in compliance with EPA standards. If you suspect a refrigerant leak or your system isn’t cooling properly, call our team for professional service you can trust.

2. AC Won’t Turn On

Possible Causes:

  • Tripped Circuit Breaker: Power surges can trip the breaker connected to your AC unit.
  • Blown Fuse or Faulty Wiring: Electrical issues can prevent the system from powering on.
  • Thermostat Malfunction: A dead battery or misconfigured settings can prevent startup.

Troubleshooting Tips:

  • Reset your circuit breaker and see if the system powers up.
  • Replace the thermostat batteries and double-check your settings.
  • If your system still doesn’t respond, schedule a diagnostic service with a licensed HVAC technician.

3. Strange Noises from Your AC

Common Sounds and What They Mean:

  • Banging or Clanking: Could indicate a loose or broken part, such as a connecting rod or piston.
  • Buzzing: Often signals electrical issues or a failing motor.
  • Squealing: Worn-out fan belts or motor bearings are usually to blame.

Troubleshooting Tips:

  • Turn off your system immediately if you hear banging or grinding to avoid further damage.
  • Schedule a repair visit to have internal components inspected.

4. Water Leaks or Excess Moisture

Possible Causes:

  • Clogged Condensate Drain Line: Dirt and debris can block the drain, causing water to back up into your home.
  • Frozen Evaporator Coil: Low refrigerant or airflow issues can cause the coil to freeze and melt.

Troubleshooting Tips:

  • Clear any visible debris near the drain line or pan.
  • If the leak persists or ice is present, it’s time to contact Goff Heating and Air Conditioning for service.

5. Weak Airflow

Common Causes:

  • Ductwork Leaks: Air may be escaping through cracks or disconnections in your ductwork.
  • Fan Issues: The blower fan may be dirty or malfunctioning.
  • Aging System: Older units naturally lose efficiency over time.

Troubleshooting Tips:

  • Replace air filters and check vents for obstructions.
  • Have your ductwork inspected as part of your bi-annual GoffCare Maintenance Membership.

6. Frequent Cycling On and Off

Potential Causes:

  • Oversized System: An AC that’s too large for your home will short cycle.
  • Dirty Components: Dirty filters or coils make your system work harder and cycle more often.
  • Thermostat Problems: Faulty sensors may misread indoor temps.

Troubleshooting Tips:

  • Clean your unit regularly or sign up for a GoffCare Membership for professional tune-ups.
  • Contact a Goff technician to evaluate if your system is properly sized for your home.

7. High Energy Bills

Why It Happens:

  • Inefficient Equipment: Older AC units draw more power to deliver the same performance.
  • Poor Maintenance: Dirty coils, clogged filters, and low refrigerant reduce efficiency.
  • Leaky Ducts: Up to 30% of cooled air can escape through leaks.

Troubleshooting Tips:

  • Schedule an energy audit or performance check.
  • Consider upgrading to a high-efficiency Bryant system installed by Goff, a Bryant Factory Authorized Dealer and 2024 Circle of Champions award recipient.

8. Electrical Component Failures

Common Issues:

  • Capacitors Out of Spec: The capacitor is like a battery that helps your AC motor start and run efficiently. Over time, it can degrade or go out of spec, causing your system to struggle or fail to start altogether.
  • Failing Contactors: Contactors are electrical switches that control the flow of electricity to your system’s components. When they wear out, you might notice a humming sound, intermittent operation, or the unit not turning on at all.

⚠️ Important Safety Warning:

We strongly advise homeowners not to attempt to test or replace capacitors or contactors on their own. These components store high voltage and can deliver dangerous electric shocks, even when the system is powered off. This work should only be performed by trained HVAC professionals—like our skilled technicians at Goff Heating and Air Conditioning.

Troubleshooting Tips:

  • If your AC isn’t starting, is making unusual clicking or humming noises, or is randomly shutting down, it’s likely time for a professional inspection.
  • Goff’s technicians are equipped to safely test and replace these critical electrical components, getting your system back up and running fast.

Prevent Common Repairs with GoffCare

A majority of AC repairs stem from poor maintenance. That’s why Goff Heating and Air Conditioning offers the GoffCare Maintenance Membership, designed to prevent breakdowns before they happen.

GoffCare Membership Benefits:

  • Bi-Annual HVAC Tune-Ups
  • 24-Hour Priority Service
  • Exclusive Discounts on HVAC Repairs
  • Extended Equipment Life

With GoffCare, you’ll stay one step ahead of unexpected repairs—and enjoy peace of mind all year long.

When to Call a Professional

While simple tasks like changing filters and checking your thermostat can be DIY-friendly, anything involving refrigerant, electrical components, or internal parts should always be handled by certified professionals.

At Goff Heating and Air Conditioning, we’ve proudly served South Bend and the surrounding communities since 1937. With over 85 years of experience, we’ve seen—and fixed—it all. Our licensed technicians are trained to diagnose and repair systems quickly, keeping your home cool and comfortable.

Final Thoughts: Know the Signs, Stay Cool

Understanding the early warning signs of air conditioning issues helps prevent small problems from becoming major repairs. Whether it’s a mysterious noise, reduced airflow, or rising energy bills, early intervention is key.

Use this Air Conditioning System Troubleshooting Guide to identify common repair issues—and trust Goff Heating and Air Conditioning to take care of the rest.

Ready to Schedule a Service or Learn More About GoffCare?

Give us a call today or schedule your free consultation online. Our team is here to deliver the Quality You Trust. Service You Deserve. Since 1937.

When it comes to maintaining the air quality in your home, selecting the right air filter is a crucial decision. Not only does it impact the health and comfort of your living space, but it also plays a significant role in the efficiency and longevity of your HVAC system. In this post, we will guide you through the key factors to consider when choosing an air filter, and introduce you to the advanced technology of polarized-media air cleaners, particularly the SolaceAir air cleaners.

Understanding Air Filter Ratings

The effectiveness of air filters is typically measured by their MERV (Minimum Efficiency Reporting Value) rating. This scale ranges from 1 to 16, with higher numbers indicating a filter’s ability to capture smaller particles. While a higher MERV rating means better filtration, it’s crucial to choose a filter that your HVAC system can handle without reducing airflow efficiency.

Consider Your Equipment Needs

Your choice of air filter should also depend on your specific household needs. If you have pets, allergies, or respiratory issues, opting for a filter with a higher MERV rating can be beneficial. However, remember to balance this with your HVAC system’s requirements. When considering larger width 5” filters for your HVAC system, it’s important to note that these filters require a larger filter rack due to their size. This means that if your current system has a standard-sized rack, an upgrade may be necessary to accommodate these thicker filters. However, the investment in a larger rack is often justified by the enhanced air filtration and efficiency these filters provide, leading to improved air quality and system performance in your home.

1″ Pleated Filters: A Convenient and Efficient Option

1″ pleated filters offer a convenient and efficient option for many homeowners. These filters will need to be changed every 1 to 3 months.

These filters provide several benefits:

  • Compatibility: 1″ pleated filters are designed to fit into standard filter racks, making them a versatile choice for most HVAC systems without the need for modifications.
  • Effective Filtration: Despite their smaller size, these filters can effectively capture a wide range of airborne particles, including dust, pollen, and pet dander, helping to improve indoor air quality.
  • Balance of Efficiency and Airflow: With a pleated design, these filters offer a larger surface area for trapping particles while maintaining proper airflow through the HVAC system.
  • Convenience and Availability: These filters are widely available and easy to replace, making them a convenient choice for regular maintenance.
  • While they may not have the same capacity for particle removal as thicker filters, 1″ pleated filters are an effective and practical solution for many households, offering a good balance between filtration efficiency and ease of use.

Some things to consider when purchasing filters:

  • Avoid the box store MERV 12 and up 1” filter. These filters can be damaging to the system and can reduce the system’s efficiency by restricting airflow.
  • If you can see through the filter, that filter is no good!

5” MERV 11 Filters

5” filters are recognized for their high-efficiency filtration, capturing a substantial amount of airborne particles, including dust and pollen. They are designed to maintain optimal airflow, thereby enhancing indoor air quality. We sell both Totaline and Trion Air Bear 5” filters.

  • High-Efficiency Filtration: With their high MERV ratings, these filters excel at capturing a significant amount of airborne particles, including dust, pollen, and other allergens.
  • Enhanced Indoor Air Quality: By effectively removing airborne contaminants, these filters contribute to a healthier indoor environment, crucial for households with allergy sufferers or respiratory issues.
  • Improved Particle Capture: These filters are adept at trapping smaller particles, including mold spores and pet dander.
  • Optimal Airflow: The 5″ thickness allows for a larger filtration surface, aiding in maintaining efficient airflow.
  • Increased Longevity: Typically, these filters have a longer life than thinner 1” filters, ensuring consistent performance.
  • Versatility: Suitable for various settings, they cater to both residential and commercial needs.

Polarized-Media Air Cleaners: A Game Changer

Now, let’s delve into the world of polarized-media air cleaners. These advanced air cleaners, such as the SolaceAir air cleaners we install, use electronic polarized-media technology to achieve maximum air cleaning capability. They are particularly adept at removing the smallest submicron particles, which are often absorbed into our lungs and bloodstream, triggering asthma attacks and allergy symptoms. The air cleaner is installed in your existing 1” filter rack and there are conversion kits if you have a larger filter rack.

How Polarized-Media Air Cleaners Work

These air cleaners operate using a safe, 24-volt current to establish a polarized electric field. As airborne particles pass through this field, they adhere to the media. What’s remarkable about these air cleaners is that their efficiency increases as they load. This means they offer exceptionally high efficiency with air resistance much lower than that of expensive disposable filters.

Benefits of Polarized-Media Air Cleaners

  • Highly Effective Particle Removal: They capture even the smallest particles that traditional filters might miss.
  • Reduction in Allergens: Ideal for those suffering from asthma or allergies.
  • Odor and Gas Control: Effective in neutralizing odors and gases, contributing to a fresher indoor environment.
  • Cost-Effective: Lower air resistance means less energy consumption and lower utility bills.

Conclusion

Choosing the right air filter involves understanding your specific needs, the capabilities of your HVAC system, and the level of air purification desired. Whether it’s the advanced technology of polarized-media air cleaners, the reliability and filtration of a 5” MERV 11 filter, or the balanced efficiency of a 1” pleated filter, there’s a solution for every home. Call us today at 574-289-6511 for more information or to schedule an appointment.