Common Summer HVAC Problems in Denver Homes & How to Fix Them
- Terry Hartzell
- Apr 3
- 4 min read
As the sun blazes over the Mile High City, Denver homeowners lean heavily on their HVAC systems to stay cool and comfortable. But with rising summer temps come a host of seasonal HVAC problems that can strain even the most reliable systems. From poor airflow to frozen coils and rising energy bills, these issues can quickly turn your home into a sweatbox.
If your AC isn’t keeping up or your energy bill’s through the roof, you're not alone. This guide will walk you through the most common summer HVAC problems in Denver homes, what causes them, and—most importantly—how to fix them before they lead to bigger (and costlier) breakdowns.
1. AC Not Cooling? One of the Most Common Summer HVAC Problems in Denver Homes
One of the top complaints Denver homeowners report is an AC unit that runs—but doesn’t cool effectively. It’s frustrating, inefficient, and usually a sign of deeper issues.
Common Causes:
Dirty or clogged air filters
Low refrigerant levels
Faulty thermostat or sensors
Leaky or unsealed ductwork
Failing compressor
How to Fix It:
Start with the basics—replace your air filter and check your thermostat settings. If the issue persists, call a licensed HVAC technician to check refrigerant and test system components. A summer tune-up from Hartzell Heating and Air Conditioning can catch these problems early and restore full cooling performance.
2. Uneven Temperatures in Different Rooms
Is your upstairs sweltering while the basement feels like a freezer? Uneven cooling is a common issue, especially in older or multi-level homes around Denver.
Causes:
Poor duct layout or balance
Closed vents or dampers
Outdated thermostats
Inadequate insulation
Airflow restrictions
How to Fix It:
Make sure vents are open and unobstructed, and filters are clean. For persistent problems, consider a zoning system or have your ductwork evaluated for redesign or sealing.
3. AC Turns On and Off Constantly (Short Cycling)
If your AC is turning on and off every few minutes, it’s likely short cycling. This not only wastes energy but also wears down your system faster.
Causes:
Oversized AC unit
Low refrigerant
Dirty evaporator coils
Electrical issues
Faulty thermostat
How to Fix It:
This one needs professional attention. Hartzell can determine whether your system is too large for your home, or if other components are causing the issue.
4. Frozen Evaporator Coils in the Middle of Summer
Frozen coils during hot weather? It’s counterintuitive, but it’s a common Denver issue that usually points to airflow problems or refrigerant imbalance.
Causes:
Dirty air filters or coils
Low refrigerant
Faulty blower fan
Clogged condensate drain
How to Fix It:
Turn off your system and let it defrost. Replace filters and have a tech inspect the unit. Ignoring frozen coils can lead to expensive compressor damage.
5. Strange HVAC Noises or Odors
Grinding, buzzing, or musty smells? These signs often indicate a problem brewing inside your HVAC unit.
Sounds to Watch Out For:
Squealing: worn-out belts
Banging: loose or broken parts
Buzzing: electrical issues
Odors to Note:
Musty smells = mold or mildew in the ducts
Burning smells = overheating or electrical faults
How to Fix It:
Shut off your system and call for immediate inspection. Strange smells and sounds can turn into full system failures if ignored.
6. High Energy Bills Without Better Cooling
Noticing a spike in your energy bill? If your AC is running constantly but you’re still sweating, your system is likely struggling with efficiency.
Common Causes:
Aging HVAC system
Dirty filters or clogged coils
Leaky ducts
Thermostat issues
Poor insulation
How to Fix It:
Schedule an energy efficiency audit with Hartzell Heating and Air Conditioning. A professional can check your system performance, suggest repairs, or recommend energy-saving upgrades.
How Hartzell Heating and Air Conditioning Helps Denver Homes Stay Cool
With over 30 years of experience, Hartzell Heating and Air Conditioning understands Denver’s unique summer climate and how it affects HVAC systems. Our certified technicians provide:
Seasonal HVAC tune-ups
Emergency AC repairs
System diagnostics and upgrades
Indoor air quality solutions
We specialize in helping Denver homeowners maintain energy-efficient, long-lasting HVAC systems.
FAQ
1. How often should I get my HVAC serviced in Denver?At least once per year, ideally in spring before peak summer temperatures hit.
2. Is it bad if my AC is constantly running?Yes—it indicates inefficiency or an underlying issue like refrigerant loss, dirty coils, or thermostat trouble.
3. Can dirty filters really cause AC problems?Absolutely. Dirty filters restrict airflow, reduce cooling performance, and strain your system.
4. How long does an HVAC system last in Denver?On average, 12–15 years, though proper maintenance can extend that lifespan.
5. When should I consider replacing my AC unit?If your system is over 10 years old, needs frequent repairs, or struggles to cool efficiently, it may be time for a replacement.
Stay Cool This Summer with Hartzell Heating and Air Conditioning
Don't wait until your AC fails during a heatwave. A little preventative maintenance and early attention to issues can keep your Denver home cool, efficient, and comfortable all season long.
Schedule your summer HVAC tune-up with Hartzell Heating and Air Conditioning today!
תגובות