What Are the Most Frequent HVAC Issues?

Goff Heating & Air Conditioning | Granger, Indiana

Is your air conditioning system acting up again? You’re not alone. For homeowners in Granger, Indiana, air conditioning repair is a common need—especially during those humid Midwest summers. At Goff Heating & Air Conditioning, we know how frustrating it can be when your HVAC system isn’t working as it should. That’s why we’ve put together this comprehensive guide to the most frequent HVAC issues, their causes, and how to solve them.

If you need immediate help, call Goff Heating & Air Conditioning at 574-289-6511 for expert air conditioning repair in Granger, Indiana.

Introduction: Why HVAC Problems Are So Common 

If you’re searching for air conditioning repair in Granger, Indiana, you’re probably already dealing with an uncomfortable home or business. HVAC systems are complex machines—made up of electrical, mechanical, and refrigerant components that work hard year-round.

Over time, wear and tear, dirty filters, or just plain old age can create problems. The good news? Most HVAC problems are common and have proven solutions.

Whether you’re facing a system that won’t turn on, uneven cooling, or strange noises, understanding the most common HVAC repair issues can help you take action quickly—and even prevent bigger problems down the road.

Understanding Your HVAC System: The Basics 

Before diving into specific HVAC repair issues, it helps to know the basics:

• HVAC stands for Heating, Ventilation, and Air Conditioning.

• Common components:

• Furnace or Air Handler: Heats and moves air.

• AC Compressor & Condenser: Cools air and removes humidity.

• Evaporator Coil: Located inside your home, absorbs heat.

• Ductwork: Delivers conditioned air.
  
• Thermostat: Controls the system.

10 Most Common HVAC Problems and Solutions 

Let’s break down the top 10 most frequent HVAC issues, what causes them, and how they can be fixed.

1. AC Not Cooling Properly

Symptoms:

• Warm air blowing from vents

• Rooms not reaching set temperature

Causes:

• Low refrigerant levels

• Dirty air filters

• Blocked condenser unit

• Thermostat issues

Solutions:

• Check air filter: Replace if dirty.

• Inspect outdoor unit: Remove debris, trim back plants.

• Call a professional: For refrigerant issues or compressor problems, contact an HVAC technician.

Expert Tip:

“Low refrigerant isn’t a ‘top off’ situation—it usually means there’s a leak that needs to be found and fixed by a pro.”

 

2. HVAC Unit Won’t Turn On

Symptoms:

• No air from vents

• Thermostat display is blank

Causes:

• Tripped breaker or blown fuse

• Loose or faulty wiring

• Thermostat malfunction

• Safety switch engaged

Solutions:

• Check breaker box: Reset if needed.

• Inspect thermostat: Replace batteries.

• Check shutoff switches: Some units have outdoor shutoff switches that may get bumped.

• Call for service: Electrical and wiring issues are best handled by licensed professionals.

3. Poor Airflow

Symptoms:

• Weak air from vents

• Hot or cold spots in rooms

Causes:

• Dirty air filters

• Blocked or leaking ducts

• Blower motor problems

Solutions:

• Replace filters regularly: Every 1-3 months is standard.

• Check vents and ducts: Make sure furniture isn’t blocking airflow.

• Call for duct inspection: Leaks or collapsed ducts may need professional repair.

4. Strange Noises or Smells

Symptoms:

• Banging, squealing, or rattling sounds

• Musty, burning, or chemical odors

Causes:

• Loose or broken parts

• Motor issues

• Mold or mildew in ducts

Solutions:

• Turn off the unit: Unusual noises can mean loose or failing parts.

• Have the system inspected: A qualified HVAC technician can safely diagnose the issue.

Common HVAC Problems and Solutions often start with noticing something unusual—trust your senses!

 

5. Frozen Evaporator Coils

Symptoms:

• Ice or frost on indoor unit

• Weak or no airflow

Causes:

• Restricted airflow (dirty filter, blocked vent)

• Low refrigerant

• Running AC with doors/windows open

Solutions:

• Turn off the system: Allow coils to thaw.

• Replace filter: Restore airflow.

• Call for repair: If coils keep freezing, you may have a refrigerant leak or airflow issue.

6. Thermostat Malfunctions

Symptoms:

• System won’t respond to temperature changes

• Unit cycles on and off rapidly

Causes:

• Dead batteries

• Old or faulty thermostat

• Poor placement (next to a heat source or in direct sunlight)

Solutions:

• Change batteries: Easy DIY fix.

• Recalibrate or replace thermostat: Especially for older units, upgrade to a smart thermostat for better control.

• Call a pro: If problems persist.

7. Refrigerant Leaks

Symptoms:

• AC not cooling efficiently

• Hissing sounds from the unit

• Ice on refrigerant lines

Causes:

• Wear and tear on refrigerant lines

• Factory defects

• Vibration damage

Solutions:

• Call an HVAC technician: Refrigerant is regulated by the EPA and must be handled by a licensed pro.

• Don’t ignore leaks: Low refrigerant reduces efficiency and can cause compressor failure.

8. Clogged or Dirty Filters

Symptoms:

• Poor airflow

• Increased energy bills

• System short cycling

Causes:

• Forgetting to change filters

• Using incorrect filter size or type

Solutions:

• Replace or clean filters regularly: Every 1-3 months (more often with pets/allergies).

• Mark your calendar: Set a recurring reminder.

9. Drainage Problems

Symptoms:

• Water pooling around unit

• Musty smell or humidity issues

Causes:

• Clogged condensate drain line

• Rusted drain pan

• Improper installation

Solutions:

• Clear the drain line: Use a wet/dry vacuum to remove clogs.

• Schedule maintenance: Annual tune-ups catch these issues before they cause water damage.

10. Electrical Issues and Blown Fuses

Symptoms:

• System shuts off unexpectedly

• Frequent breaker trips

Causes:

• Power surges (thunderstorms are common in Granger!)

• Aging wiring or loose connections

• Overloaded circuits

Solutions:

• Reset breaker: If it trips again, call an expert.

• Have wiring inspected: Safety first—don’t DIY electrical issues.

Seasonal Maintenance: Preventing Future Repairs 

One of the best ways to avoid common HVAC repair issues is preventative maintenance. In Granger, Indiana, the spring and fall are ideal times for a professional tune-up.

Benefits of Seasonal Maintenance:

• Extend equipment lifespan

• Improve energy efficiency

• Lower utility bills

• Fewer unexpected repairs

• Better indoor air quality

What to expect from a maintenance visit:

• Cleaning and inspecting coils

• Checking refrigerant levels

• Tightening electrical connections

• Lubricating moving parts

• Inspecting thermostat operation

• Replacing filters

Pro Tip:

“A well-maintained HVAC system can last 15 years or longer. Schedule annual service to protect your investment.”

 

When to Call for Professional Air Conditioning Repair in Granger, Indiana 

While some HVAC issues have easy DIY fixes, many require a trained professional—especially those involving refrigerant, electrical work, or complex repairs.

If you experience any of these, call Goff Heating & Air Conditioning at 574-289-6511:

• No cooling or heating at all

• Water leaks or ice formation

• Electrical smells or frequent breaker trips

• Hissing, banging, or burning odors

• Poor air quality or allergy issues

Don’t wait until a minor issue becomes a costly emergency.

The sooner you address common HVAC problems, the less you’ll spend in the long run.

Why Choose Goff Heating & Air Conditioning? 

Locally owned and trusted in Granger, Indiana, Goff Heating & Air Conditioning has served St. Joseph & Elkhart County and the surrounding communities for decades.

Here’s why customers keep coming back:

• Expert Technicians: Certified, trained, and experienced.

• Upfront Pricing: No surprises—just honest, transparent service.

• Fast Response: Same-day and emergency repair available.

• Comprehensive Services: We handle heating, air conditioning, indoor air quality, duct cleaning, and more.

• Community Commitment: Proud to serve Granger, Indiana, and beyond.

Don’t take our word for it—check out our 5-star reviews from satisfied Granger homeowners!

 

Frequently Asked Questions 

Q: How often should I replace my air filter?

A: Most filters should be replaced every 1-3 months. If you have pets, allergies, or smoke, replace them more often.

Q: What’s the average cost of air conditioning repair in Granger, Indiana?

A: Costs vary depending on the issue, but simple repairs (like capacitor replacement or a new thermostat) can be affordable. More complex jobs (compressor or refrigerant leaks) are higher. Call us for a quote!

Q: Can I run my AC with a frozen coil?

A: No. Shut the system off and call a pro. Running it can damage your compressor and lead to bigger problems.

Q: What brands of HVAC equipment do you service?

A: Goff Heating & Air Conditioning services all major brands, including Bryant, Carrier, Trane, Lennox, Rheem, Goodman, and more.

Q: How can I tell if my HVAC system needs to be replaced instead of repaired?

A: If your system is over 10-15 years old, requires frequent repairs, or your energy bills are increasing, it may be time to consider replacement. Our team can provide a no-pressure evaluation.