A furnace that stops working always seems to pick the coldest night. If this is your first time, take a breath. Most furnace problems have a clear cause, and many can be fixed without a new system.
Healthroles Heating & Air is a referral service. We listen, explain the basics in plain words, and connect you with independent providers in our network. The providers do the repair work, not us. You can compare estimates from providers serving the Greensburg area at your own pace, with no obligation. This page walks you through gas safety, simple checks, warning signs, what a visit looks like, and when replacing may make more sense than repairing.
Smell Gas? Step Outside First
If you smell rotten eggs near your furnace, do not look for the cause. Do not flip switches or light anything. Leave the house and bring everyone with you.
From outside, call your gas utility or the local emergency number. Wait for the all-clear before you go back in. A repair provider can look at the furnace after that.
The same goes for a carbon monoxide alarm that goes off. Get outside into fresh air and call for help. Safety comes first, and the repair can wait.
Quick Checks Before You Reach Out
Some furnace problems are small. A few simple checks may save you a visit, or at least give a provider useful details. Stay on the safe side. Do not open the furnace cabinet or touch gas parts.
Look at the thermostat
Make sure it is set to heat and the temperature is above the room reading. If the screen is blank, the batteries may be dead. Fresh batteries are an easy first step.
Check power and the switch
Furnaces have a service switch that looks like a normal light switch, often near the unit. Someone may have flipped it by accident. Also check the breaker panel for a tripped breaker.
Check the air filter
A clogged filter can make a furnace shut itself off. If yours looks gray and thick, swap it for a new one that matches the size printed on the frame.
Note any error lights
Many furnaces blink a code through a small window. Write down the pattern you see. Providers can use it to guess the problem before they arrive.
Signs Your Furnace Needs Repair
Some signs are loud. Others are easy to miss until a cold snap hits. Here is what to watch for.
Banging, squealing or rattling
New noises mean something is worn, loose or struggling. A squeal often points to the blower. A bang at startup may point to the burners.
Short cycling
If the furnace turns on and off again and again, something is making it shut down early. It is hard on the system and hard on your comfort.
Uneven heat
Some rooms feel warm while others stay cold. This can come from a weak blower, blocked vents or duct trouble. Older homes with long duct runs see this often.
Rising bills
If your heating bill climbs and your habits did not change, the furnace may be working harder than it should.
What Happens During a Furnace Repair Visit
Knowing the steps makes the visit feel calmer. A provider usually starts by asking when the problem began and what you have noticed. Then they check the thermostat, power, filter and airflow.
Next they look at the ignition, burners, safety switches and blower. They may test for proper venting and gas pressure. After that, they explain what they found and give you a written quote before any repair starts.
You can ask questions at every step. A good provider is happy to show you the worn part and explain it in simple words.
Common Furnace Repairs
Ignitor and flame sensor
These small parts help the furnace light and stay lit. They get dirty or wear out with age. Replacing them is a common, fairly modest repair.
Blower motor and fan parts
The blower pushes warm air through your home. If it hums but will not spin, or runs weakly, a part may need to be replaced.
Control board and thermostat
The control board is the furnace's brain. When it fails, the system may not start or may act strangely. A thermostat that misreads the room can cause similar trouble.
Cracked heat exchanger
This part keeps combustion gases separate from your household air. A crack is a serious safety issue. A provider will explain your options, and replacement is often discussed at that point.
Repair or Replace Your Furnace?
This is the question most first-timers worry about. There is no single answer, but a few clues help.
- The furnace is more than about 15 to 20 years old.
- Repairs keep coming back, one after another.
- The quote for one repair is a large share of a new system's price.
- Your heating bills keep climbing.
- The heat exchanger is cracked.
If several of these fit, it may be worth asking about furnace replacement near me options. Older homes with full basements and stone or block foundations often have older systems, so this comes up often. Replacement is covered on its own page for the AC side of heating and cooling, and providers can talk through furnace options during a visit.
Take your time. An older furnace that still runs safely does not have to be replaced in a rush.
Questions to Ask the Provider
A few good questions help you compare, then decide, without pressure.
- What exactly is wrong, and can you show me?
- Is the quote in writing, with parts and labor listed?
- Is the repair covered by a warranty on parts or labor?
- What happens if the same problem returns?
- Would you suggest repair or replacement, and why?
Ask two or three providers if you can. Similar answers are reassuring. Very different answers are a reason to ask more questions.
When Cold Weather Adds Pressure
Cold snowy winters push furnaces hard. A weak system may hold up in fall and fail in a deep freeze. If your furnace has been acting odd, a check before the worst weather can bring peace of mind.
If your home is already cold, use safe backups while you wait. Close off unused rooms, and keep to the one or two rooms you use most. Do not use an oven or outdoor grill to heat the house. Those can create dangerous fumes.
Planning Your Next Step
Start with safety, then try the simple checks. If the furnace still will not run, Request a callback to check provider availability, or send an estimate request. Either way, there is no obligation. You are just gathering information.
What's Included
Problem Diagnosis
A provider checks the thermostat, power, filter, ignition and airflow to find why your heat stopped.
Safety Checks
Providers look at venting, burners and safety switches while the system is open.
Part Repairs
Worn ignitors, sensors, blowers and boards can often be repaired or replaced during the visit.
Written Quote
You get a clear written price with parts and labor listed before any repair work starts.
Typical Furnace Repair Costs
Prices vary with your furnace, your home and the part needed. These are typical U.S. ranges, not quotes. Always ask for a written quote before you agree to any repair.
| Repair item | Typical range | Notes |
|---|---|---|
| Diagnostic visit | $75 – $200 | Often credited toward a repair; ask first |
| Ignitor or flame sensor | $100 – $400 | Common small repair on many furnaces |
| Thermostat replacement | $100 – $300 | Smart models cost more |
| Blower motor | $400 – $1,500 | Depends on motor type and furnace model |
| Control board | $300 – $900 | Parts for older models can cost more |
| Heat exchanger | $1,500 – $3,500+ | Often leads to a replacement discussion |
How It Works
Check for safety
If you smell gas or hear a carbon monoxide alarm, leave the house and call for help.
Try simple checks
Look at the thermostat, power switch, breaker and air filter before reaching out.
Reach out
Request a callback or send the request form to be matched with providers.
Compare quotes and choose
Review written quotes, ask your questions, and pick what feels right.
Why Call Healthroles Heating & Air
Plain-words help first
We explain furnace basics in simple language so you know what you are being asked to decide.
Independent providers
You are connected with local providers in our network who do the actual work.
Compare estimates
Ask more than one provider and compare, then decide at your own pace.
No obligation
Requesting an estimate never commits you to hiring anyone.
Other Services
Need furnace repair in Greensburg?
Not sure what is wrong with your system? Reach out. Tell us what you notice, and we will point you to local providers who can take a look.
No obligationFurnace Repair FAQ
Why is my furnace running but not heating my house?
Common causes include a dirty filter, a thermostat problem, a failed ignitor or a weak blower. Try the simple checks first. If the air stays cool, a provider can find the cause safely.
How long does a furnace usually last?
Many furnaces last about 15 to 20 years with regular care. Age, use and upkeep all matter, so a provider can tell you more about your system.
Is it safe to keep using a furnace that makes strange noises?
Not always. Turn it off if you smell gas, see soot or hear loud banging. Otherwise, have a provider look at it soon so a small issue does not grow.
Request a callback
Not sure what is wrong with your system? Reach out. Tell us what you notice, and we will point you to local providers who can take a look.
No obligation