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Why Your Home Needs a Whole Home Humidifier This Winter

February 5, 2025

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.

Recently, our service manager Don appeared on WSBT’s Hometown Living to discuss the importance of whole home humidifiers.

As temperatures drop in South Bend, Granger, Mishawaka and surrounding areas, many homeowners focus on keeping their homes warm, but few realize how dry winter air can impact comfort, health, and even their heating system. Low humidity is a common yet overlooked problem that can lead to everything from health issues to common furnace problems. Installing a humidifier is one of the best ways to maintain balanced indoor air and protect both your home and HVAC system.

In this blog, we’ll cover why humidity matters, the common issues with gas furnaces caused by dry air, and the benefits of a whole home humidifier.

What Happens When Humidity is Too Low?

During winter, cold air holds less moisture, and when your furnace heats that air, it becomes even drier. Ideally, indoor humidity should be around 45%. When levels drop below this range, your home and health can suffer.

Common Problems Caused by Low Humidity

1. Increased Health Issues

Dry air can cause respiratory issues, sore throats, and sinus irritation. It can also worsen conditions like asthma and allergies. Without proper moisture, your nasal passages dry out, making it easier for viruses and bacteria to spread.

2. Dry, Itchy Skin

Low humidity pulls moisture from your skin, leading to dryness, itchiness, and even cracking. It can also cause chapped lips and worsen eczema.

3. Damage to Wood Furniture and Flooring

Wood expands and contracts with changes in humidity. When the air is too dry, it pulls moisture from wood furniture, floors, and even musical instruments, causing cracks, warping, and other permanent damage.

4. Increased Static Electricity

If you’ve noticed more static shocks in the winter, low humidity is to blame. Dry air creates an imbalance in electrical charges, leading to those annoying zaps every time you touch a doorknob or pet your dog.

5. Higher Energy Bills

Dry air feels colder than properly humidified air, which can make you turn up the thermostat. This leads to increased energy use and higher heating costs. A humidifier can help you feel warmer at lower temperatures, reducing the strain on your furnace.

How Low Humidity Affects Your Furnace

Aside from personal discomfort, dry air can contribute to certain common furnace problems, especially with gas furnaces. Here’s how:

1. Increased Wear and Tear on Components

Low humidity can make dust and debris more airborne, which can clog your furnace filter faster. When airflow is restricted, your furnace has to work harder, increasing strain on internal components and potentially shortening its lifespan.

2. More Frequent Furnace Cycling

When humidity is too low, the air feels colder than it actually is. This often leads homeowners to turn up the thermostat, making the furnace run more frequently. Excessive cycling can put unnecessary stress on the system, increasing wear on key components like the blower motor and ignitor, which can lead to more frequent repairs.

3. Comfort Issues Leading to Higher Energy Use

Dry air makes it harder for your home to retain heat. This means your furnace has to run longer to maintain the same level of comfort, resulting in higher energy bills throughout the winter.

Why a Whole Home Humidifier is the Best Solution

Portable humidifiers may provide temporary relief, but they only work in small areas and require constant refilling. A whole home humidifier integrates with your HVAC system to maintain balanced humidity throughout your entire home.

Benefits of a Whole Home Humidifier

Improved Comfort: Proper humidity levels make your home feel warmer, allowing you to set your thermostat lower and save energy.

Healthier Air: A humidifier reduces airborne viruses, allergens, and respiratory irritation.

Protects Your Home: No more cracked wood floors, furniture, or musical instruments due to dry air.

Increases Furnace Efficiency: Proper humidity reduces strain on your heating system, helping it run more efficiently and last longer.

Low Maintenance: Unlike portable units, a whole home humidifier connects to your water supply, meaning no refilling and minimal upkeep.

Get a Whole Home Humidifier Installed by Goff Heating and Air Conditioning

If you’re experiencing dry air this winter, don’t wait until it leads to bigger problems. Our team at Goff Heating and Air Conditioning can install a whole home humidifier to keep your air comfortable and protect your HVAC system from common furnace problems.

Schedule your appointment today and breathe easier all winter long!

Call us at 574-289-6511 or visit www.goffheating.com to learn more.

Quality You Trust. Service You Deserve. Since 1937.