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So check them if your gas furnace fails to ignite when you turn the system on. The main reason for this air restriction is usually traced back to dirty air filters. Often times the reason air does not get to your furnace’s igniter is because it is restricted. If the air in your system is not flowing it cannot produce the required gas/air mixture and your home heating system will not ignite because of it. A gas furnace burns a mixture of air and natural or LP gas. You would be surprised how many gas furnace users do not do this step when their heater does not start up and end up getting charged for an expensive HVAC service call.
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You might be charged for the service – another reason to make sure you don’t run out of propane! 2. How much is a service call? Expect to pay between $70 and $125 just to have a technician show up to say, “your propane tank is empty – and that’s your problem.”ĭid you know? If your propane tank runs empty, your propane provider will probably want to do a pressure test of the system to check for leaks after filling the tank. This is true even if being out of LP gas was the only problem with your furnace.
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This is an important step for propane gas users because if you call an HVAC technician before doing this they will charge you for a service call. If this gas pressure gauge reads 10% or above, then you should be OK if not, call your gas company for a fill-up, and you have probably solved the reason why your furnace did not start up. However, some will start to sputter and possibly not supply enough gas for your furnace to fire when they get close to being empty. Most propane systems will continue to supply gas until they are just about empty. In the top center of it, there will be a domed area where its fill valve is. First of all, you need to go out into your yard and locate where your gas storage tank is. It’s much easier to determine if your furnace is getting gas if you are a liquid propane user. If you smell gas near your furnace when you turn it on there is a good chance that your gas supply is not the problem
FURNACE WON T IGNITE PROFESSIONAL
If you are on a city gas line you will not be able to do this step because trying to tell if you are getting natural gas to your heater is dangerous and should only be done by a professional HVAC technician. Troubleshooting a Gas Furnace When It Fails to Ignite One of the first steps in determining why your furnace is not igniting is to make sure it’s getting gas to it. First Things First – Check Your Gas Supply Turn it on, and hopefully the furnace will fire!ģ. If it is perpendicular to the line, the gas has been shut off. The handle is long – and it should run parallel to the line when open/on. The gas valve in the gas line is in the ON position. It should look just like a light switch and be located on or right next to the furnace.Ģ. The power switch on the furnace is in the ON position. OK, three quick things that might be the problem if you’re new to the house or the HVAC system was worked on immediately before it won’t work. If you are successful with one of these and get your furnace to come on, you may just save yourself quite a bit of money on an otherwise costly HVAC service call.
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There are some very simple troubleshooting steps, that anyone with even a light mechanical background can do themselves.