Common HVAC Problems in Hot Weather & How to Solve Them

Central Florida summers are no joke. The heat and humidity are enough to make anyone retreat indoors. But what happens when your HVAC system — the very thing keeping you cool and comfortable — runs into trouble? Hot weather can put significant strain on HVAC systems, causing various malfunctions that not only affect your comfort but also your energy bills.

This blog post dives into the most common HVAC problems during hot weather and how to address them effectively. If you're in need of reliable HVAC supplies in Central Florida, Discount Air Supply has you covered.
 

Why Hot Weather Challenges HVAC Systems

Before jumping into specific issues, it helps to understand why HVAC systems face challenges during hot weather. The high temperatures and constant use of AC units force the system to work overtime, leading to wear and tear. Additionally, increased humidity levels can make the indoor environment even tougher to manage if the HVAC system isn't functioning optimally.

You may notice inconsistent cooling, unusual noises, or an unexpected spike in your energy costs. These are all signs of potential HVAC problems that need immediate attention.
 

Common Hot Weather HVAC Problems and Their Solutions

Here are the most frequent HVAC problems you may encounter during the sweltering heat, along with actionable solutions to keep your system running smoothly.

1. Insufficient Cooling

One of the most frustrating issues is an AC system that just won't cool your home adequately, leaving some rooms warm despite the system running nonstop.

Causes:

• Dirty or clogged air filters
• Refrigerant leaks
• An undersized HVAC system

Solution:

Start by checking the air filters. If they're dirty, replace them. For refrigerant issues, it's best to contact a professional to inspect and refill refrigerant if necessary. If your system is too small for your home, you may need to upgrade to a properly sized unit. Not sure what size to choose? Visit Discount Air Supply for expert advice and premium HVAC supplies in Central Florida.

2. Frozen Evaporator Coils

When the evaporator coils freeze, airflow is restricted, leading to poor cooling performance.

Causes:

• Low refrigerant levels
• Dirt buildup on coils
• Issues with airflow due to blocked vents or dirty filters

Solution:

Turn off your HVAC system and allow the coils to thaw. Once thawed, inspect the filters and vents for blockages, and clean or replace them as needed. If frozen coils persist, reach out to an HVAC specialist to check refrigerant levels and clean the coils thoroughly.

3. High Energy Bills

During peak summer, it's natural for energy bills to rise slightly, but a sudden spike is an indication that your HVAC system is struggling to perform efficiently.

Causes:

• Poor insulation in the home
• Faulty thermostat
• Aging or inefficient HVAC systems

Solution:

First, check and recalibrate your thermostat. You may also want to consider upgrading to a smart thermostat for more precise temperature control. Additionally, ensure your home is well-insulated to prevent cool air from escaping. If your HVAC system is outdated, consider replacing it with a more energy-efficient unit. Check out Discount Air Supply for options on energy-efficient HVAC supplies.

4. Unusual Noises

Rattling, banging, or hissing noises coming from your HVAC system can be alarming and a tell-tale sign that something's wrong.

Causes:

• Loose parts or components
• Refrigerant leaks
• Debris trapped in the system

Solution:

If you hear unusual noises, shut down the system and inspect it for any visible debris or loose parts you can tighten. Persistent noises often require professional attention to identify and fix deeper issues.

5. Frequent Cycling

"Short cycling" occurs when your HVAC system turns on and off too frequently, leading to uneven cooling and higher energy usage.

Causes:

• An oversized HVAC system
• Issues with the thermostat placement (e.g., too close to heat sources)
• A clogged air filter

Solution:

Check the air filter to ensure it's clean and clear. If thermostat placement is a problem, relocate it away from windows, heat-producing appliances, or direct sunlight. If the system is too large for your home, consult a professional to discuss replacement options.

6. Poor Indoor Air Quality

Hot weather combined with high humidity can lead to poor indoor air quality, causing discomfort and even health issues like allergies or respiratory problems.

Causes:

• Dirty air ducts
• Humidity levels not managed by the HVAC system

Solution:

Schedule regular cleaning and maintenance of air ducts to ensure they remain free from dust and other pollutants. If humidity is an issue, consider installing a dehumidifier. For top-notch HVAC supplies, including dehumidifiers, check out the selection offered by Discount Air Supply in Central Florida.

7. Leaking Units

Noticing puddles of water around your HVAC system? This could indicate a clogged drain line or a refrigerant leak.

Causes:

• Blocked or clogged condensate drain
• Faulty drain pan
• Low refrigerant levels

Solution:

Inspect the condensate drain for blockages and, if necessary, use a wet/dry vacuum to clear it. Replace or repair the drain pan if it's the culprit. For refrigerant leaks, professional repair and maintenance are essential.
 

Maintenance Tips for Avoiding Hot Weather HVAC Problems

Prevention is always better than cure, especially when it comes to complex HVAC systems. Here are some maintenance tips to help avoid common issues during hot weather:

• Regular Filter Changes: Replace air filters every 1-2 months to maintain optimal airflow and air quality.
• Seasonal Maintenance: Schedule professional HVAC inspections before peak summer and winter seasons to catch and resolve issues early.
• Clean Outdoor Units: Keep the area around your outdoor HVAC unit clean and free of debris.
• Invest in a Programmable Thermostat: Reduce wear on your system and save energy by setting efficient cooling schedules.
   

Trust Discount Air Supply for Your HVAC Needs in Central Florida

Dealing with HVAC problems during the sweltering heat can be frustrating, but the right supplies and proper maintenance can make all the difference. Whether you're a DIY enthusiast looking for filters and tools or a professional installer in need of first-rate supplies, Discount Air Supply is your one-stop shop in Central Florida.

Don't let your HVAC system fail you when you need it most. Contact Discount Air Supply today for more information about our full range of HVAC supplies. Our expert team is ready to assist you in keeping your home comfortable all year round.