Boiler, Furnace, or Heating System Trouble-Shooting Checklist
Link Mechanical Services receives dozens of phone calls each year from homeowners who are having problems with their heating system. They often ask if there is something they can do before having to schedule a system repair.
If your heating system isn't producing enough heat, or it is not switching on when it should, follow this troubleshooting checklist before you call for a repair:
Natural Gas Furnaces and Boilers:
- Ensure that the thermostat is set in the heating mode, and that
the temperature is set above the current room temperature (3-5 degrees higher).
- If your thermostat is battery operated, check your batteries.
- If your furnace is a forced-air system, check the fan thermostat switch it should be in the "AUTO" position.
- Verify that your filter is clean (forced air systems).
- Make sure all vents and return air ducts are open and not blocked (forced air systems).
- Check the emergency switch at the top of the cellar stairs to ensure it is in the "ON" position.
- Check the service switch on the side of the system to make sure it is in the "ON" position.
- Check to see if any circuit breakers are tripped in the electrical panel. Reset if needed.
- If you have a standing pilot model gas burner, make sure the pilot is lit. Re-light if needed.
- Make sure your gas meter is on, and service has not been interrupted.
- Check to make sure the flue vents are not blocked on high-efficiency systems. Clear away any snow or ice.
- JUST CALL LINK for service if this does not get your system up and running.
$50 OFF
Furnace/Boiler Repair*
*Valid on minimum purchase of $275. Cannot be combined with other offers or be applied to Discount Comfort Club or previous offers. Offer valid through December, 2024
Oil / Propane / LP Gas Furnaces and Boilers:
For Propane or Oil Furnaces and Boilers, follow the steps listed above, plus these:
- Make sure your fuel tank has fuel in it. Low tank levels and cold weather can cause intermittent problems.
- JUST CALL LINK for service if this does not get your system up and running.
If Your System is Having any of the Following Problems, Call for Service Right Away:
- You notice fluid or water leaking around the system or humidifier.
- Your system is making strange noises or is noisier than usual.
- Your system has a hard time starting up, takes longer than usual to get started, or you notice your lights dim upon start-up.
- Your system runs longer than normal and doesn't keep your home comfortable.