Memphis Furnace Repair: What to Check Before Calling for Help

By AJ's HVAC
on
Homeowner checking furnace settings in a Memphis basement

When the Memphis chill rolls in, a furnace that won’t turn on can feel like a flat tire in rush hour traffic. Your home’s warmth and comfort ride on this one system—and when it sputters, you want answers fast.

At AJ’s HVAC, we understand how stressful it is when your heat stops working, especially during a cold snap or holiday weekend. Before you call for furnace repair in Memphis, there are a few things you can check to save time, money, and maybe even restore your heat without waiting for a technician.

Immediate Furnace Checks 🔍

Before you reach for the phone, take a few minutes to walk through these quick steps. Think of it like checking your flashlight batteries before a storm—simple, safe, and can make all the difference.

1. Thermostat Settings

  • Is your thermostat set to “heat”?
  • Is the temperature set above the current room temperature?
  • Do the batteries need replacing? (Many digital thermostats fail silently when batteries die.)

2. Furnace Filter

  • Remove the filter and hold it up to the light. If you can’t see through it, it’s time for a change.
  • A clogged filter can cause the furnace to shut off to prevent overheating. (According to the U.S. Department of Energy, replacing your filter is one of the easiest ways to maintain your system’s efficiency and prevent unnecessary repairs.)

3. Circuit Breaker or Power Switch

  • Check your home’s electrical panel. Look for the breaker labeled “furnace” or “HVAC.” Is it tripped? Flip it off, then back on.
  • Many furnaces also have a nearby power switch (it often looks like a light switch). Make sure it’s “on.”

4. Furnace Door and Safety Switch

  • Modern furnaces have a small switch behind the main access door. If the door isn’t fully closed, the furnace won’t run.
  • Check that the panel is snug and secure.

5. Obvious Signs of Trouble

  • Strange noises? Burning smells? Water or rust around the unit? These are red flags.
  • If you smell gas, leave your home immediately and call 911. Do not try to troubleshoot a gas leak.

Signs You Need Professional Repair

Some problems just aren’t safe or realistic to handle on your own. Here’s when it’s time to call for professional furnace repair:

  • The furnace will not turn on after basic checks.
  • You hear banging, screeching, or rattling noises.
  • The furnace cycles on and off rapidly (short cycling).
  • The blower runs constantly, even when the thermostat isn’t calling for heat.
  • You see water pooling around the furnace or notice rust.
  • There’s a persistent burning, chemical, or electrical smell.
  • The carbon monoxide detector is alarming, or you suspect a gas leak.

If you’re ever in doubt, it’s safer to pause and call in a licensed technician. AJ’s HVAC is trained to handle these hazards—so you don’t have to.

Preparing for Memphis Cold Snaps 🥶

Memphis weather can surprise you. One day it’s mild, the next you’re scraping ice off your windshield. Sudden temperature drops put extra strain on your furnace. Here’s how to get ready:

  • Schedule routine heating maintenance ahead of winter.
  • Keep extra filters on hand.
  • Clear space around your furnace and vents—blocked airflow can lead to shutdowns.
  • Test your thermostat and furnace in early fall, not the first icy morning.
  • Know where your circuit breakers and gas shut-off valves are located.
  • If you’re leaving town for the holidays, set your thermostat to at least 55°F to prevent frozen pipes.

Safe Troubleshooting: Do’s and Don’ts

Do:

  • Turn off power at the breaker before inspecting inside the unit.
  • Replace filters regularly (every 1–3 months during heavy use).
  • Call for help if you see or smell anything dangerous.

Don’t:

  • Try to repair gas lines or electrical wiring yourself.
  • Ignore persistent problems—small issues can become big, expensive ones.
  • Block air intake or exhaust pipes outside your home.

For more on home HVAC safety, the U.S. Consumer Product Safety Commission and your local Memphis building department have helpful guidelines.

The Value of Quick Diagnostics

A few minutes of careful checking can sometimes get your heat running again—especially when it’s just a tripped breaker or a dirty filter. Even if you do need a pro, sharing what you’ve checked helps AJ’s HVAC pinpoint the problem faster. This means less time shivering and more time enjoying a cozy home.

What Happens When You Call AJ’s HVAC

When our technician arrives, here’s what you can expect:

  • We’ll listen to your description of the problem and review what you’ve already checked.
  • We’ll inspect the thermostat, filter, electrical connections, and furnace operation.
  • Diagnostic tools help us spot issues like a faulty ignitor, pressure switch, or motor.
  • We’ll explain the issue in plain language and outline your repair options.
  • If parts are needed, we’ll source them quickly—especially during Memphis’s busiest cold-weather months.

Emergency Furnace Issues: What Qualifies?

You shouldn’t have to wait days when your family’s comfort or safety is at risk. AJ’s HVAC offers 24-hour emergency service for:

  • No heat during freezing weather (especially for homes with infants, elderly, or health concerns).
  • Gas leaks or carbon monoxide alarms.
  • Electrical burning smells, persistent water leaks, or visible sparking.

If it’s urgent, call—day or night.

FAQ: Memphis Furnace Repair

Q: How often should I replace my furnace filter?
A: Every 1–3 months, depending on usage and whether you have pets, allergies, or recent remodeling dust.

Q: My furnace is running, but the house is still cold. Why?
A: Check for closed vents, dirty filters, or thermostat misreadings. If those aren’t the cause, there may be a deeper mechanical issue.

Q: Is it dangerous to run a furnace with a strange smell?
A: Yes. Unusual odors can signal electrical problems, overheating, or a gas leak. Turn off the system and call AJ’s HVAC.

Q: How quickly can repairs be completed?
A: Many common issues are resolved on the first visit. If parts are needed, we’ll communicate realistic timelines based on local supply and weather conditions.

Costs & Time Factors: What to Expect

Furnace repair costs in Memphis depend on the age of your system, the nature of the failure, and the parts required. Most diagnostic visits are straightforward, but more complex repairs (like blower motor or heat exchanger replacement) can take longer. We always provide clear, upfront information before starting work. Timelines vary—especially during peak winter or after a major storm.

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Getting Ready for the Unexpected

Memphis winters can be unpredictable, so a little planning goes a long way. Schedule annual furnace checkups, stock up on filters, and know AJ’s HVAC is here for emergencies—rain, shine, or sleet.

For reliable furnace repair in Memphis, quick tips, and 24-hour emergency support, keep our number handy.

Call AJ's HVAC now — or reach us anytime at  (901) 657-1827 .

Trusted HVAC Help When You Need It Most. Speak to AJ’s now. (901) 657-1827