Why does my furnace stop and then start again?

The most common issues that can cause your furnace to stop and start again are: Restricted Airflow: Your furnace draws in air from your home and then cycles the warm air back into your home. If your intake vents and exhaust vents are blocked or airflow is restricted, then you could experience short cycling.

Why is the gas in my furnace not igniting?

If the gas supply to the furnace is disrupted, your furnace could potentially be lacking the amount of fuel necessary to ignite. Finally, if you smell gas or believe there is a leak, evacuate your home immediately and call a professional to evaluate the emergency issue. 3. The Furnace Your furnace could also be the cause of the problem.

Why does my forced air furnace not come on?

That, however, does not mean they are bulletproof and will always come on and work when you need them. Like any type of mechanical appliance, they are prone to occasional breakdowns. One of the most common problems on forced air gas furnaces is their failure to ignite and come on.

When do you know you need to replace furnace ignitor?

If your furnace won’t ignite or won’t turn on at all, it’s giving you a sign that you need to replace the ignitor. Be careful about making a quick judgment though because failure to run is also caused by other problems. Unless you’ve set your thermostat to COOL, your furnace should not blow cold air.

How can I tell if my gas furnace is working?

Another easy way to tell if the gas is on and working properly is by starting another gas burning appliance, like the stove. If it seems like the gas line is not the issue and the gas is flowing to other appliances, check to make sure the gas supply to the furnace itself is open and clear.

Why does my forced air furnace not ignite?

One of the most common problems on forced air gas furnaces is their failure to ignite and come on. It can be a very frustrating experience that literally leaves you out in the cold. Of course, when your gas furnace fails to ignite you can pick up the phone and call your HVAC repair person.

What to do when your furnace is not igniting?

Many homeowners discover that their furnace is not working when they go to turn it on for the first time of the winter season. If you find that your furnace is not igniting at a time when you need it most, try these easy fixes first in an attempt to get your heating system up and running in a short amount of time as possible.

Why does my furnace not start when I Turn on the heat?

This is typically the problem if you can hear your furnace click on but it does not fire up. A faulty or dirty ignition or sensor is a relatively easy fix, so follow these steps, and you may be able to solve the problem yourself.

What happens if you touch an ignitor in a furnace?

Make sure you do not touch the ignitor with your bare hands. If you touch an ignitor with your hands the oil off your skin can transfer to the ignitor and shorten the life of the ignitor. Below we have a picture showing a cracked ignitor. If you do not visually see a crack in the ignitor]