Your HVAC system rarely fails without warning. It usually sends signals first, such as weak airflow, strange noises, rising energy bills, or uneven temperatures.
The problem? Most homeowners ignore the signs until the system completely stops working.
Common HVAC problems include poor cooling, heating failure, airflow issues, refrigerant leaks, clogged filters, thermostat malfunctions, and electrical problems. Some are minor and inexpensive to fix. Others can lead to full system failure if ignored.
Queen City Heating and Cooling is here to guide you about common HVAC problems and the solutions that can save you hundreds of dollars from Heating and cooling service in Nixa, MO.
Your air conditioner runs, but your home never reaches the set temperature. You definately needs our ac repair service.
Low refrigerant can damage the compressor—one of the most expensive parts of your AC.
If the system runs constantly or the air feels warm.
Your AC is on, but warm air is coming from the vents.
If warm air continues, you likely have deeper air conditioner problems requiring professional repair.
Your furnace runs but doesn’t produce heat—or won’t turn on.
Gas furnaces can leak carbon monoxide if malfunctioning.
Immediately if:
The system is completely unresponsive.
If it still won’t start, it’s likely an electrical failure.
$150–$1,200 depending on component.
The system turns on and off every few minutes.
Short cycling strains components and shortens the system's lifespan.
$150–$2,000 depending on the cause.
Weak airflow is one of the most overlooked signs that your HVAC needs repair.
Smart thermostats improve efficiency and reduce heating and cooling issues.
Refrigerant must be handled by licensed professionals.
$300–$1,500 depending on leak location.
Ignoring this can destroy your compressor.
Turn the system off and allow it to thaw.
Call a professional if freezing continues.
The #1 cause of common HVAC problems.
Replace every 1–3 months.
Skipping this increases failure risk by over 40%.
Loose or broken part.
Worn belt or motor bearing.
Loose panel or debris.
$150–$800 depending on the issue.
Never ignore new noises.
Musty odors affect indoor air quality and health.
If bills suddenly spike, your system is losing efficiency.
An inefficient system can increase energy use by 20–40%.
Check the drain line for blockage.
$150–$600 typically.
Water damage can become expensive quickly.
Do this to avoid most furnace problems and air conditioner problems:
Replace filters every 1–3 months
Schedule professional maintenance twice per year
Keep the outdoor unit clear
Clean vents and registers
Check thermostat calibration
Inspect ductwork every 2–3 years
Flush the condensate drain annually
Regular maintenance:
Skipping maintenance is the fastest way to shorten system life.
Call for emergency HVAC repair immediately if:
Delaying service in these cases can cause safety hazards or major damage.
The most common HVAC problem is a clogged air filter. Dirty filters restrict airflow, reduce efficiency, cause frozen coils, and strain motors. Replacing filters regularly prevents many larger heating and cooling issues.
If your HVAC system is running but not cooling, it may have low refrigerant, dirty coils, restricted airflow, or a failing compressor. Start by checking the filter and thermostat before calling a technician.
HVAC repair costs typically range from $150 to $1,500, depending on the issue. Minor electrical repairs are inexpensive, while compressor or major component replacements are significantly more expensive.
Signs your furnace needs repair include strange noises, uneven heating, frequent cycling, higher gas bills, and difficulty starting. Systems over 15 years old are especially prone to failure.
Short cycling happens when the system turns on and off frequently. Dirty filters, oversized equipment, thermostat placement issues, or refrigerant imbalance may cause it.
Homeowners can safely replace filters, reset breakers, and check thermostat settings. Electrical repairs, refrigerant handling, and gas furnace repairs require licensed professionals.
HVAC systems should be serviced twice per year—once before cooling season and once before heating season. Regular maintenance prevents breakdowns and keeps warranties valid.
Skipping maintenance, ignoring repairs, dirty filters, and short cycling significantly reduce system lifespan. Most systems last 15–20 years with proper care.
Most HVAC systems not working could have been prevented.
Small warning signs turn into expensive failures when ignored.
If your system is:
Now is the time to act.
A licensed HVAC technician can diagnose the issue, prevent further damage, and restore efficiency quickly.
Don’t wait for a complete breakdown in the middle of summer or winter.
Schedule a professional inspection today and protect your comfort, your budget, and your home.
Your comfort isn’t optional—it’s essential.
