Top 5 HVAC Issues to Watch Out for This Summer
Summer in Garland TX brings soaring temperatures that put a heavy load on your HVAC system. At Jason’s Airtex, we see a clear pattern of common problems that homeowners face during these hot months. Understanding these issues helps you keep your system running smoothly and avoid emergency repairs when you need your air conditioner the most.
In this post, we’ll walk you through the most frequent summertime HVAC problems we encounter, explain why they happen, and share how regular maintenance can protect your system and your comfort.
Frozen Evaporator Coils
One of the most surprising problems we see in summer is frozen evaporator coils. When your AC runs, refrigerant absorbs heat from inside your home through these coils. If airflow is restricted or refrigerant levels drop, the coils can freeze over.
Common causes include:
Dirty air filters blocking airflow
Low refrigerant from leaks
Malfunctioning blower fans
Frozen coils reduce cooling efficiency and can cause your system to shut down. If you notice ice buildup on your outdoor unit or reduced cooling, call us immediately. We’ll inspect your system, clean or replace filters, check refrigerant levels, and fix airflow issues.
Capacitor Failures
Capacitors help start and run your AC’s motors. The summer heat stresses these components, leading to failures that cause your system not to start or run properly. Signs include:
AC won’t turn on
Humming sounds without fan movement
Intermittent cooling
Capacitors wear out over time, especially under heavy summer use. Regular inspections during maintenance allow us to spot weak capacitors before they fail, saving you from sudden breakdowns.
Clogged Drain Lines
Your AC removes humidity by condensing moisture on the evaporator coils. This water drains through a line outside your home. During summer, these drain lines can clog with algae, dirt, or debris, causing water to back up and potentially damage your system or home.
Symptoms of clogged drain lines include:
Water leaks around the indoor unit
Musty odors
AC shutting off unexpectedly
We recommend clearing drain lines during routine service to prevent blockages and water damage.
Thermostat Issues
Thermostats control your HVAC system’s operation. In summer, thermostat problems can cause your AC to run too long, not turn on, or cycle erratically. Common thermostat issues include:
Dead batteries
Loose wiring
Calibration errors
If your home isn’t cooling properly or your energy bills spike, your thermostat might be the culprit. We can test and recalibrate thermostats or recommend upgrades for better control.
Dirty Filters
Dirty air filters are a leading cause of many HVAC problems. They restrict airflow, forcing your system to work harder, which can lead to frozen coils, increased wear, and higher energy use. Filters also trap dust and allergens, so neglecting them affects indoor air quality.
Changing or cleaning filters every 1-3 months during summer keeps your system efficient and your air clean.
Worn Contactors
Contactors are switches that control the flow of electricity to your AC’s compressor and fan motors. Summer heat and frequent cycling cause contactors to wear out, leading to:
AC not starting
Intermittent operation
Buzzing noises
During maintenance, we inspect contactors and replace worn parts to keep your system reliable.
How Preventative Maintenance Helps
Preventative maintenance is the best way to avoid these common summer HVAC problems. At Jason’s Airtex, our summer tune-ups include:
Checking and replacing air filters
Inspecting and cleaning evaporator coils
Testing capacitors and contactors
Clearing drain lines
Calibrating thermostats
Checking refrigerant levels and system pressures
Regular maintenance improves efficiency, extends equipment life, and reduces emergency repairs. It also helps you spot small issues before they become costly breakdowns.
Taking a proactive approach means your AC will keep your home comfortable all summer long without unexpected interruptions.
Summer heat in Garland TX challenges your HVAC system, but knowing the common problems and how to prevent them makes a big difference. Frozen coils, capacitor failures, clogged drains, thermostat glitches, dirty filters, and worn contactors are all manageable with the right care.
If you want to keep your system running smoothly this summer, contact Jason’s Airtex today. Our experienced technicians are ready to schedule your service or provide an estimate. Don’t wait for a breakdown—let us help you stay cool and comfortable all season.
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