Why is my furnace running but not blowing hot air?
Start with the thermostat and filter. A clogged filter or a dirty flame sensor can cause cool air. If the checks do not help, a provider should test the igniter, gas supply and safety switches.
Heating and cooling help for cold-weather trouble
Furnace Repair in Kenner
Request an estimate for your furnace
A furnace that will not start, blows cool air or makes odd noises is a problem you want sorted out. Fingerscosts Heating & Air is a referral service. We connect homeowners in Kenner with independent HVAC providers in our network who diagnose and repair furnaces.
This page walks you through what to do in order. Start with gas safety. Then run a few simple checks you can do yourself. Then learn when to stop and let a pro take over. A careful repair protects the house, keeps the system working the way it should, and helps protect resale value. Winters here are mild, so your furnace may sit idle for months. That makes a first cold night a common time for trouble to show up. Check, then call.
Smell Gas? Get Out First
A rotten-egg smell means stop. Do not flip switches, light anything or use a phone inside. Walk everyone out, including pets. Then phone the gas utility or 911 from outside.
A hissing sound near the furnace is another reason to leave. So is a carbon monoxide alarm. Carbon monoxide has no smell. If your detector sounds, get out first and ask questions later.
Quick Checks Before You Book
No gas smell, just a cold house? A few checks take about ten minutes. Start with the easy ones.
Check the Thermostat
Set it to heat. Raise the target a few degrees above room temperature. If the screen is dim or blank, swap the batteries. Make sure the fan setting is on auto.
Slide Out the Filter
A clogged filter chokes airflow. That can trip a safety switch and shut the furnace down. Slide it out and hold it to the light. If you cannot see through it, replace it.
Find the Furnace Switch and Breaker
Most furnaces have a wall switch that looks like a light switch, often near the unit. Make sure it is on. Then check the breaker panel. Reset a tripped breaker once. If it trips again, leave it alone.
Clear the Space Around the Unit
Furnaces in closets and attics collect clutter. Move boxes, paint cans and laundry away. Keep the area around the vent pipe open and clean.
Know Where DIY Ends
Stay out of the gas valve, burners, wiring and heat exchanger. Do not pull panels past the filter door. Never bypass a safety switch to get heat running. Those switches protect your home from fire and fumes.
If the quick checks do not help, it is time for a provider. Request a callback to check provider availability in your area.
Signs Your Furnace Needs Repair
Some signs are loud. Others creep in. Watch for these:
- No heat, or heat that fades after a few minutes
- Warm air that never gets very warm
- Banging, squealing or rattling when it starts
- A burner flame that looks yellow or flickers
- Short bursts of heat that keep turning on and off
- A heating bill that climbs with no change in habits
- A musty or dusty smell that does not clear
A yellow flame and soot near the unit deserve extra caution. Turn the furnace off and have a provider look at it.
What Happens During a Repair Visit
A provider usually starts by asking when the problem began and what you have already tried. Tell them about the checks you did. It saves time.
Next comes testing. They look at the thermostat, igniter, flame sensor, blower, vents and safety switches. They check airflow and gas pressure. Then they explain what they found and give you a written quote before any repair work starts.
Common Furnace Repairs
Most furnace calls come down to a short list of parts.
Ignition and Sensor Problems
A worn igniter or a dirty flame sensor keeps the furnace from staying lit. These are among the more common fixes.
Blower and Motor Trouble
A weak blower motor or a worn capacitor gives you low airflow or no airflow. Grinding noises often point here.
Control Board and Wiring
Burned contacts or a failing board can cause random shutdowns. This work belongs with a pro.
Repair or Replace Your Furnace?
Age matters. Many furnaces run 15 to 20 years with good care. If yours is near that range and the repair is large, compare a repair quote with a furnace replacement quote. Ask for both in writing.
A cracked heat exchanger usually tips the scale toward replacement. Frequent breakdowns do too. A newer unit can also use less fuel. If you are searching for furnace replacement near me, an estimate from a local provider is a good first step.
Special Care for Older Homes
Older houses hide surprises. A furnace may sit in a tight closet, a crawl space under a pier-and-beam floor, or a hot attic. Old ductwork can leak. Past repairs may have left patched vents or mismatched parts.
Tell the provider what you know about the house. Ask them to look at the vent pipe, duct joints and the space around the unit, not just the furnace itself.
Protect the House
A careful repair does more than bring back heat. It keeps fumes out of living space, protects ducts and framing from moisture and heat, and leaves a record of service. That paperwork helps when you sell. Keep every invoice in one folder.
Questions to Ask the Provider
Before you say yes, ask:
- What is wrong, and can you show me the part?
- Is the quote written, with parts and labor listed?
- Is the repair covered by any parts warranty?
- Does the furnace pass a safety and venting check?
- Would you repair or replace at this age?
A clear provider answers these without fuss. If something feels rushed, get a second opinion.
Ready to Get It Handled
You have done the safe checks. Now let a pro do the rest. Many providers in the Kenner area can respond quickly, though availability varies.
What's Included
Heat Diagnosis
A provider tests the thermostat, igniter, sensors, blower and safety switches to find why your heat quit.
Part Repairs
Worn igniters, sensors, motors and capacitors can often be fixed or swapped during one visit.
Safety Checks
Vent pipes, flame pattern and airflow get a look so fumes stay out of your home.
Written Quote
You get the problem, parts and labor explained in writing before work begins, so you can decide calmly.
Typical Furnace Repair Costs
Prices vary by furnace age, brand, parts and how hard the unit is to reach. These are typical U.S. ranges only. Always ask for a written quote before approving work.
| Repair item | Typical range | Notes |
|---|---|---|
| Diagnostic visit | $75 – $200 | Often applied toward the repair if you proceed |
| Igniter replacement | $100 – $400 | Common no-heat fix on newer furnaces |
| Flame sensor clean or replace | $75 – $300 | Cleaning costs less than a new sensor |
| Blower motor | $400 – $1,500 | Price depends on motor type and access |
| Inducer motor or control board | $300 – $1,000 | Parts for older models can cost more |
| Heat exchanger repair | $1,500 – $3,500 | Often leads to a replacement conversation |
How It Works
Make It Safe
If you smell gas, leave the house and phone the gas utility or 911 from outside.
Run Quick Checks
Test the thermostat, filter, furnace switch and breaker. Write down what you tried.
Reach Out
Request a callback or send the form so a local provider can review your situation.
Review the Written Quote
Compare repair and replacement options, ask questions, then choose what fits your home.
Why Call Fingerscosts Heating & Air
Check Before You Call
Simple checks solve some problems, so you only book a provider when you truly need one.
Clear Limits
We name the jobs that belong to a pro, so you stay safe.
Local Providers
You are matched with independent providers who know homes in Kenner.
House First
A careful repair protects your home and its resale value.
Other Services
Need furnace repair in Kenner?
Tell us what your system is doing. Request an estimate, or Request a callback to check provider availability in the Kenner area. No obligation to move forward.
No obligationQuestions
Furnace Repair FAQ
Is it safe to reset my furnace myself?
Resetting a tripped breaker once is fine. If the furnace shuts off again or you smell gas, stop. Do not keep resetting it. Have a provider inspect it.
How do I know if I need furnace replacement?
Age near 15 to 20 years, frequent repairs, rising bills or a cracked heat exchanger are common signs. Ask a provider for a written repair quote and a replacement quote to compare.
Contact
Tell us what happened
Tell us what your system is doing. Request an estimate, or Request a callback to check provider availability in the Kenner area. No obligation to move forward.
No obligation