Why is my furnace blowing cold air?
Common causes include a thermostat set to fan only, a dirty filter, a failed igniter, or a flame sensor problem. Try the quick checks first. If the air stays cold, a provider can diagnose it.
AC repair and heating help across the Albany area
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A furnace that will not start, blows cold air, or makes odd noises needs a clear plan. Resultedcrash Heating & Air is a referral service. The repairs are not done by us. We connect homeowners in Albany and the Albany area with independent providers in our network who handle heating repair.
This page works like a checklist. It covers gas safety, quick checks you can do yourself, common repairs, and when replacement makes more sense. It also lists the questions to ask a provider, what a solid answer sounds like, and which red flags to watch for. Ask, then hire. When you are ready, request an estimate or Request a callback to check provider availability. Done right, kept right: good heating work protects your comfort, your home, and its value.
This comes first. If you smell gas (like rotten eggs), do these steps in order:
Do not try to fix a gas leak yourself. A provider can only look at the furnace once the gas company says the home is safe.
Carbon monoxide has no smell. Watch for headaches, dizziness, nausea, or a detector alarm. If any of these show up, get everyone outside into fresh air and call emergency services. Test your detectors each season. Older homes with closed-up basements need working detectors on every level.
If there is no gas smell and no alarm, try this short list before you book a visit:
1. Thermostat: Set it to heat and raise it a few degrees. Replace dead batteries. 2. Power: Check the breaker and the furnace power switch, often near the unit. 3. Filter: A clogged filter can shut a furnace down. Swap it if it looks gray and packed. 4. Vents: Make sure registers are open and nothing blocks them. 5. Intake and exhaust pipes: Clear snow or debris from outside vents.
If the furnace still will not run, stop there. Do not open panels or reset the unit again and again.
Some signs are clear. Others build slowly. Look for:
A yellow flame can point to a combustion problem. Treat it as a safety issue and have a provider look at it.
Long, snowy winters mean long run times. Deep cold pushes a furnace to work nonstop. Snow and ice can also block outdoor vents on high-efficiency units. In older homes with full basements and stone or block foundations, heat can escape fast, so a weak furnace shows its problems quickly.
Summer cooling trouble is a different job. If that is your issue, emergency AC repair has its own page.
Here is the usual order:
1. First, the provider asks about symptoms and checks safety, including gas and carbon monoxide. 2. Next, they inspect the burners, igniter, sensor, blower, and filter. 3. Then, they find the cause and explain it in plain words. 4. After that, you get a written quote before any larger repair starts. 5. Last, they test the furnace and show you the fix.
This kind of HVAC service should feel clear, not rushed.
Most no-heat calls come down to a short list:
Many of these are quick fixes. A cracked heat exchanger is not. It can leak dangerous gases, and providers often advise replacement.
Use this quick test:
If you search for furnace replacement near me, ask providers to quote both a repair and a replacement in writing. Then compare. Installation details have their own page.
A cold house can cause more trouble than discomfort. In older homes, pipes near exterior walls and in basements are at risk during deep cold. Open cabinet doors under sinks, let faucets drip slightly, and use safe space heaters with care. Never use a gas oven or grill for heat. Fixing heating and cooling problems the right way also protects your home and its value for a future sale.
Ask, then hire. Bring this list to every call:
A solid provider answers plainly. They name what they will check. They explain the likely cause and the options. They tell you what is covered by warranty and for how long. They are happy to put it in writing. If you do not follow an answer, ask again. A good provider does not mind.
Be careful if a provider:
One red flag is a reason to pause. Two is a reason to call someone else.
Get ready with this short list:
Check the box on each item:
Keep the paperwork. It helps if you sell the home later.
Book a yearly tune-up before cold weather. Change filters on schedule. Keep the area around the furnace clear. Small habits prevent many winter breakdowns.
Ready to compare providers? Request a callback to check provider availability, or use the request form to ask for an estimate.
Providers look at gas, venting, and carbon monoxide risks before they work on any furnace.
A provider finds the cause of the problem and explains it in plain words.
Ask for the price of parts and labor in writing before any larger repair starts.
After the repair, the provider runs a full heat cycle so you can see it working.
Prices change with the furnace, the part, and the home. These are typical U.S. ranges, not quotes. Always get a written quote from the provider before work starts.
| Repair item | Typical range | Notes |
|---|---|---|
| Diagnostic visit | $75 – $200 | Often applied toward the repair |
| Flame sensor or igniter | $100 – $400 | Common no-heat fix |
| Thermostat replacement | $100 – $350 | Varies by smart or basic model |
| Blower motor | $300 – $1,000 | Depends on motor type |
| Control board | $300 – $800 | Price varies by brand and model |
| Heat exchanger | $1,500 – $3,500 | Often leads to a replacement quote |
If you smell gas or a detector sounds, leave the house and call emergency services first.
Look at the thermostat, power, filter, and vents before booking a visit.
Request a callback to check provider availability, or submit the request form.
Ask questions, review the quote, and pick the provider who answers clearly.
Our checklist helps you ask the right questions and spot clear answers before you choose a provider.
Providers in our network are independent local businesses that do the actual work.
We list warning signs so you can walk away from pushy offers.
Good heating work protects your home, its value, and your comfort.
Describe your heating or cooling problem and request an estimate. A provider from our network will reach out to talk through the next steps.
No obligationCommon causes include a thermostat set to fan only, a dirty filter, a failed igniter, or a flame sensor problem. Try the quick checks first. If the air stays cold, a provider can diagnose it.
It can be. A healthy flame is usually steady and blue. A yellow or flickering flame may mean poor combustion. Turn the furnace off and have a provider inspect it.
Consider replacement if the unit is over 15 to 20 years old, breaks down often, or has a cracked heat exchanger. Ask for written quotes for both repair and replacement.
Describe your heating or cooling problem and request an estimate. A provider from our network will reach out to talk through the next steps.
No obligation