Every time your thermostat calls for heat, the furnace runs a fixed checklist. The inducer motor starts and proves draft by closing a pressure switch, the hot surface igniter heats up, the gas valve opens, the burners light, and the flame sensor confirms there is fire. Only after all of that does the blower start pushing warm air into the house. Finding the step that fails is most of the job. Around Memphis, TN, the usual failure points are an oxide-coated flame sensor, an igniter cracked by years of heating and cooling, a pressure switch that stays open because of a weak inducer or a clogged condensate trap on a high-efficiency unit, and control boards with burned relays. Each one halts the startup, and from the hallway they all look alike.
Memphis HVAC repairs furnaces by testing the sequence, not guessing at it. Our experienced technicians verify each stage with a meter rather than a hunch: igniter resistance, flame signal in microamps, pressure switch operation against actual inducer draft, gas valve voltage, and blower and capacitor health. Every visit includes the safety fundamentals on a fuel-burning appliance: heat exchanger inspection, leak-testing of gas connections, and flue draft verification, because the difference between a furnace problem and a furnace hazard is not visible from the thermostat. We measure temperature rise against the data plate before we leave so the fire and the airflow are matched the way the manufacturer intended.
We work on natural gas, propane, and electric furnaces from every major brand, both conventional 80 percent units and condensing high-efficiency models with their traps, drains, and dual pressure switches. The truck stock covers the parts that actually fail: igniters, flame sensors, pressure switches, capacitors, inducer assemblies, and blower motors, so most no-heat calls end with heat the same visit. For furnace repair anywhere in Memphis, call (901) 749-7931 and we will get the burners lit today.
Cooling trouble instead? See AC Repair in Memphis.
How Much Does Furnace Repair Cost in Memphis?
For most Memphis homes, a furnace repair runs $150 to $600. Cleaning a flame sensor is a small job; replacing a blower motor or control board is a bigger one. Every furnace repair starts with a real diagnosis and a clear price.
| Repair | Typical cost | What it usually means |
|---|---|---|
| Flame sensor cleaning or replacementFurnace lights, then shuts off within seconds | $80–$250 | Burners light but cut out almost immediately |
| Hot surface igniter replacementFurnace clicks and tries to start but never lights | $150–$400 | No ignition; one of the most common winter failures |
| Draft inducer motorStartup fan fails, furnace won't fire | $400–$1,000 | Startup fan fails, furnace won't fire |
| Blower motorNo airflow, or the blower runs nonstop | $400–$1,500 | No airflow, or the blower runs nonstop |
| Control boardErratic behavior, error codes, or no response at all | $300–$700 | Erratic behavior, error codes, or no response at all |
| Gas valve replacementValve fails to open, so the furnace never lights | $250–$700 | Igniter glows but gas never flows to the burners |
Ranges are typical for these repairs; you get an exact quote before any work starts.
What Affects the Price
- The age and efficiency of the furnace, since high-efficiency models use more specialized parts
- Whether a cracked heat exchanger is found, which usually means replacement rather than repair
- Same-day or after-hours service versus a planned visit
- How easy the furnace is to reach
If your furnace is past 15 to 20 years old or the repair is a major one, we'll give you repair and replacement prices side by side. No heat right now? Call (901) 749-7931.
Signs You Need Furnace Repair in Memphis
Spotting the early warning signs gives you the chance to act before the situation spirals into something far more expensive. Here are the most common indicators that it's time to call a professional:
- A pilot or burner flame that is lazy yellow instead of crisp blue
- Squealing or grinding from the blower compartment
- The blower runs constantly but the air never warms
- Flames that start, last a few seconds, and go out again and again
- The igniter glows and clicks, yet no flame ever appears
- A bang or boom when the burners ignite late
- Water, rust stains, or black soot around the flue or cabinet
- Frequent on-off cycling that never reaches the thermostat setting
Early Action Saves Money
Most HVAC failures start small, a weak capacitor, a squealing blower, a system that runs a little longer each week. If you notice any of these signs, contact Memphis HVAC at (901) 749-7931 for a prompt inspection.
Ready to Solve Your Furnace Repair Problem?
Our experienced technicians are standing by to help.
Call (901) 749-7931 NowFrequently Asked Questions About Furnace Repair
Why Hire a Professional for Furnace Repair?
The most serious furnace problem is usually hidden. A cracked or corroded heat exchanger can let combustion gases into the airstream, and nothing about it is visible from the outside of the cabinet. Delayed ignition makes things worse, because each boom at light-off puts more stress on that metal. Add high voltage, a gas valve, and a flue to the same box, and there is little room for guesswork. Diagnosis is full of traps too. A high limit that keeps tripping could be a bad switch, or it could be doing exactly its job because a filter is clogged or the blower is dying, and replacing a good switch only hides the real fault.
At Memphis HVAC, no symptom gets treated in isolation. A meter tells us the flame signal, so we never condemn a good sensor while the real culprit, a cracked igniter or a weak gas valve, stays in place. We confirm draft at both the pressure switch and the flue, measure temperature rise against the data plate to catch airflow problems early, and leak-test every gas connection with instruments, not a guess. When we are done, the furnace has proven itself safe and correct through a full cycle, and if it is nearing the end of its useful life, we tell you honestly.
How Our Furnace Repair Works
We follow a proven process to ensure every repair and installation is completed to the highest standards. Here's how we handle furnace repair from start to finish:
Sequence Diagnosis
Instead of guessing, we follow the startup sequence step by step, with readings on the inducer, pressure switch, igniter, flame sensor, and gas valve, until the broken link shows itself.
Combustion Safety Check
The heat exchanger is inspected, gas connections are leak-tested, and flue draft verified on every visit. A furnace repair that is not proven safe is not finished.
Same-Visit Repair
Igniters, flame sensors, pressure switches, capacitors, and motors ride on the truck, so most furnaces are lit and heating again before we pack up.
Final Cycle Testing
Before we head out, the furnace runs full cycles while we check temperature rise against the data plate, listen for clean, quiet ignition, and test each limit and safety control.
Furnace Repair Prevention Tips
A few simple habits now, like regular filter changes and seasonal tune-ups, can add years to your system's life. Follow these tips from our experienced technicians:
- Avoid packing the utility room, because burners need open space for combustion air
- Keep a working carbon monoxide alarm on every level of the home and check it each month
- Have the furnace checked every autumn, while a weak igniter or fouled sensor is still an easy fix
- If you have a high-efficiency furnace, check that the condensate drain is flowing freely
- Pay attention when the burners light, since a boom instead of a soft whoosh calls for service
- Replace the filter every month while the furnace is working hard, since it costs less than any other part
- Store laundry supplies, especially chlorine products, well away from the furnace closet
DIY vs. Professional Furnace Repair
Some simple checks are suitable for DIY, but most heating and cooling repairs benefit from professional tools, training, and experience. Consider the following comparison:
| Factor | DIY Attempt | Professional Service |
|---|---|---|
| Heat Exchanger | Cracks invisible from the outside | Inspected on every repair visit |
| Ignition Faults | New igniter installed on a hunch | Every stage measured before replacing parts |
| Gas Safety | Small leaks missed entirely | Instrument leak test on each visit |
| High-Limit Trips | Safety switch bypassed or swapped | Filter, blower, and ducts checked for the cause |
| Airflow Match | Blower speed left wherever it was | Temperature rise set to the data plate |
| Final Check | It lit once, call it fixed | Complete cycles tested before we leave |
Get Furnace Repair Help Today
Get your comfort back before a small fault becomes a full breakdown. Memphis HVAC is ready to respond fast.
Call (901) 749-7931 NowFurnace Repair Across the Memphis Area
Wherever you are in the area, the same experienced team handles your furnace repair. Find your community below.