NO HEAT COMING FROM THE SYSTEM

 When your heating system isn’t producing any heat, it’s a clear sign something’s wrong.

 Common causes include:

• Thermostat settings: 

  • Double-check that your thermostat is set to “heat” and the temperature is set higher than the room temperature. 

  • Replace the batteries if needed and ensure the screen is functioning.

• Power supply: 

  • Make sure the system is receiving power. Check the circuit breaker and ensure the unit is plugged in. 

  • Look for a tripped breaker related to your furnace or boiler and reset it if necessary.

  • Locate the switch near your furnace or boiler and ensure it’s in the “on” position.

• Pilot light or ignition: For older systems, the pilot light may have gone out. Relight it according to the manufacturer’s instructions or call a technician if you’re unsure.

UNEVEN HEATING ACROSS ROOMS

If some rooms in your home are warmer than others, your heating system might not be distributing heat evenly.

Here’s what you can check:

• Blocked vents:

  • Walk through your home and make sure all supply and return vents are open.

  • Ensure furniture, curtains or other objects aren’t obstructing airflow.

  • Slightly close vents in warmer rooms to redirect heat where it’s needed.

  • Vacuum the grilles periodically to keep airflow smooth and clean.

• Air filters: Dirty filters can restrict airflow and impact performance. 

  • Replace the air filters every 1-3 months. (More frequently if you have pets, allergies or if you are running your system constantly.)

  • Always shut off your heating system before removing or replacing the filter for safety and to avoid sucking in dust.

  • Check for the airflow direction arrow on the filter and make sure it points toward the blower motor (into the ductwork, not out of it).

• Ductwork: Leaks or poorly insulated ducts may cause heat loss. Consider sealing or insulating your ducts.

  • Common signs of leaky ducts:

    • Uneven heating (some rooms colder than others)

    • High energy bills

    • Dust buildup around vents

  • Look for disconnected joints, holes, or tears—especially in attics, basements, or crawl spaces.

  • Use duct wrap insulation (available at hardware stores).Use foil-backed tape or mastic sealant, not regular duct tape (which actually fails over time).

  • Clean the Ducts (As Needed)

  • If you notice:

    • Musty odors from vents

    • Visible dust/pet hair blowing out

    • Signs of mold or rodent activity

    • Allergy symptoms worsening indoors

 …it might be time to call in a professional duct cleaning service.

STRANGE NOISES

Unusual sounds like banging, rattling, or squealing could indicate mechanical problems:

• Banging: This might result from air in the system or a malfunctioning part like the blower motor.

• Rattling: Loose components or ductwork could be to blame.

• Squealing: Belts or bearings might need lubrication or replacement.

Ignoring these noises can lead to more severe damage, so it’s best to address them promptly.

HEAT FREQUENTLY TURNING ON AND OFF

Short cycling, where the system starts and stops frequently, can reduce efficiency and increase wear.

Possible causes include:

• Dirty air filters: These can cause the system to overheat and shut down prematurely.

• Thermostat placement: If the thermostat is near a heat source, it may register the wrong temperature and turn off too soon.

• Oversized system: An overly powerful system can heat the space too quickly, causing it to cycle off and on.

Consulting an HVAC professional can help you determine the underlying issue and correct it.

HIGH ENERGY BILLS

If your heating costs have suddenly spiked, your system may be running inefficiently.

Causes include:

• Old or poorly maintained equipment: Regular maintenance can keep your system running efficiently.

• Air leaks: Drafts around windows and doors can let heat escape.

• Thermostat settings: Using a programmable thermostat to lower the temperature when you’re not home can help save energy.