5 Common HVAC Problems and What They Mean

Posted - July 12, 2021
5 Common HVAC Problems and What They Mean

How to Detect Your Residential AC Unit Problems

It’s the middle of summer, you’re relaxing on the couch, cranking up your AC to avoid the outside heat, when suddenly, the sound of your system running cuts out before reaching its target temperature. It won’t take long for your home to become uncomfortable. It’s time to find out what’s wrong with your HVAC system, fast. 


After all, even the smallest problem can lead to overheating compressors and total system burnout. Don’t let an AC issue fester, take the necessary steps to find out what could be causing a glitch in your system.

How Can You Detect HVAC Problems?

Advanced Home Comfort is Dallas and Plano’s first choice for HVAC replacements, repairs, and maintenance services. While we have the experience to quickly diagnose your problem and create an effective solution, we understand that some homeowners may want to have an idea of what’s wrong with their system.


Some HVAC problems are obvious while others require deeper professional digging. Here’s a look at some of the most common HVAC problems and how to detect them. 

Refrigerant Leak

Your system’s refrigerant lines are the reason why your AC provides your home with cool air when it needs it. Any leak in your refrigerant line will have a painful impact on how your HVAC functions.


Some of the most common signs of a refrigerant leak include the following issues:


  • Hissing refrigerant lines
  • Warm air coming from the vents
  • Your AC running longer than normal and never quite reaching its set temperature
  • Ice buildup on your coils or refrigerant line

Clogged Drain Lines

Drain lines are essential in your AC system. They drain water from your evaporator coil and prevent water damage within your unit and home. Over time, drain lines can become clogged and start to cause malfunctions within your system.


Although most modern systems have built-in fail-safes that prevent water buildup, a clogged drain line can be a real problem for your comfort. Some signs of a clogged drain line include:


  • Short cycles
  • Water leaking from your unit
  • Dampness throughout your home


A home health technician can quickly determine if a clogged drain line is your problem and can help you clear out your lines and bring back cool air into your home. 

Thermostat Malfunction

The average thermostat will manage your temperature output for about a decade. When your thermostat starts to malfunction, your AC system won’t keep your home as cool as it should.


Here are some of the signs that your thermostat is the root of your home’s AC problem:


  • Your thermostat is unresponsive
  • Your system runs constantly no matter your settings
  • Your system won’t turn on
  • Unexpected temperature shifts
  • Unusually high energy bills

Dirty Evaporator Coils

Your AC components should regularly be cleaned throughout the year; especially your system’s evaporator coils. Your evaporator coil absorbs heat from inside your home and keeps your rooms cooler.


If the coil gets dirty and stays dirty, it becomes an insulator and leads to some of these signs that it’s time to call in an AC professional:


  • Warm air coming from your vents
  • Your AC runs longer than average
  • Frequent system starts and stops 
  • Inconsistent cooling throughout the home
  •  Banging or hissing noises coming from your system

Premiere AC Maintenance in Dallas and Plano

One of the easiest ways to avoid HVAC problems is through preventative maintenance. An annual inspection from a licensed AC technician can keep common system problems away and overall unit costs down.


Not only can we help keep your AC running, but our inspection and maintenance process ensures that your system reduces energy costs and keeps your home at an even temperature.  

Repair or Replace Your Faulty HVAC Unit with Advanced Home Comfort

Don’t let the heat beat you down if your residential AC goes on the fritz. Reach out to the home comfort experts for the best HVAC repairs in Dallas. 


At Advanced Home Comfort, we specialize in HVAC repairs, replacements, and can even secure the comfort of other essential systems in your home like attic insulation, ductwork, and crawl space.

No matter your home comfort needs, our technicians are prepared to help. Reach out to us today to schedule an inspection and start getting your home’s health back in shape.