No Heat Checklist

When Your Heat Stops Working

Losing heat on a cold Cincinnati night is stressful — but sometimes, it’s caused by something simple. This checklist can help you rule out a few common problems before calling for service.

If one of these quick checks fixes it, great. If not, Schmidt Heating & Cooling is ready to help.

Serving Greater Cincinnati and Northern Kentucky — Cincinnati, West Chester, Mason, Loveland, Florence, Covington, Fort Thomas, Milford, and nearby towns.

5 Fast Checks Before You Call

These quick steps may save you a service visit:

• Thermostat – Set to HEAT and at least 3 °F above current room temperature.
• Power – Make sure the furnace or boiler switch is ON and breakers are not tripped.
• Gas Supply – Gas valve open? Are other gas appliances working?
• Air Filter – Replace a dirty filter on forced-air systems.
• Radiators & Vents – Open radiator valves or vents and clear any blockages.

If those fix the issue, you’re good. If not, call 513-531-6900 and we’ll take it from there.

Step 1: Know What Heats Your Home

Most Greater Cincinnati homes use one of the following:

• Gas Furnace – Burns fuel and uses a blower to distribute warm air.
• Heat Pump – Transfers heat from outside to inside (works like an A/C in reverse).
• Boiler – Circulates hot water or steam through radiators or baseboards.
• Dual-Fuel System – Heat pump for mild weather, furnace for extreme cold.

Understanding your setup helps you spot which part might be at fault.

Step 2: Detailed No-Heat Checklist

1. Check Your Thermostat

• Mode: HEAT
• Temperature: 3 °F or more above room temp
• Replace batteries if needed

2. Check the Power

• Verify the furnace or boiler switch (looks like a light switch) is ON.
• Inspect your breaker panel for tripped breakers labeled Furnace, Boiler, or Heat.
• Unsure about fuses? Call us — we’ll walk you through it safely.

3. Check the Gas Supply (for Furnaces & Boilers)

• The gas valve handle should be in line with the pipe.
• Confirm other gas appliances (like a stove) work; if not, contact your gas provider.

4. Replace or Inspect Your Air Filter (Forced-Air Systems)

• A clogged filter restricts airflow and can shut down a furnace or heat pump.
• Replace it monthly during the heavy heating season.

5. Check Radiators or Baseboards (Boilers)

• Ensure valves are open and clear.
• If you hear banging or gurgling, turn the system off and call us.

6. Look for Error Codes

• Many systems show blinking lights through a small window.
• Count the flashes, check your manual, or tell us what you see when you call.

7. Listen & Observe

• Is the blower or pump running?
• Are vents blowing warm air or radiators heating up?

If you smell gas or hear loud bangs, turn off the system and leave the area immediately. Call your gas company first, then us.

Step 3: What’s Normal for Heating

Furnaces – It may take a few minutes before warm air reaches the vents. High-efficiency models run longer but use less fuel.

Heat Pumps – Blow air around 80 °F – 90 °F; it feels cooler than furnace air but still heats efficiently.

Boilers – Warm gradually and evenly; radiators may feel warm (not hot) yet still heat effectively.

During extreme cold, even well-maintained systems may run continuously to keep up — that’s normal.

Step 4: Prevent No-Heat Problems

Routine care keeps heating systems reliable:

• Replace filters regularly
• Keep air intakes clear
• Schedule yearly maintenance

Learn about our Maintenance Plans to keep your equipment protected year-round.

Safety First

If you’re uncertain about electrical, gas, or mechanical checks — stop and call us. Your safety always comes first.

Still No Heat?

If you’ve gone through these steps and your home still isn’t warming up, it’s time for a professional.

Call Schmidt Heating & Cooling — 513-531-6900. We’ll diagnose the problem, fix it right, and restore your comfort fast.

Have a Heat Pump?

These same checks apply to heat pumps. They provide both heating and cooling, switching automatically between modes as temperatures change.