Having to call your HVAC repair company when your furnace stops working and it's 40 degrees in your house at 2 am is never pleasant. While emergencies are always going to happen, there are many times when furnace problems can be detected and treated before they lead to an all-out furnace failure. Here are four signs that you should call your furnace repair team before a loss of heat occurs.
Your heating bills have skyrocketed.
If your heating bills suddenly went up and the increase can't be explained by a sudden increase in fuel prices or a decrease in outdoor temperatures, then it is time to call your HVAC specialist. When there's something wrong with your furnace, such as a failing burner or a faulty thermostat connection, your furnace may have to burn through a lot more fuel to get the job done. Having the problem fixed now will not only keep you from having to go without heat when the problem worsens, but will also save you from high fuel bills.
Your furnace is making banging or rattling noises.
This is a sign that a part is working its way loose. As it bangs and rattles, it is likely becoming looser and looser, until eventually, it will works its way completely apart and probably lead to heating failure. Often, rattling noises are due to loose parts in the blower unit. Popping and banging noises may be due to restricted gas flow, which may mean that your gas jets or the burner need cleaning. All of these issues must be dealt with by a professional.
The flame inside your furnace is yellow rather than blue.
Yellow flames are colder than blue flames. If your furnace's flame is yellow, it's not generating nearly enough heat. This could be due to a problem with the gas flow, a broken or dirty burner, or cracks in the heat exchanger. Sometimes, a yellow flame may be indicative of carbon monoxide being produced and accumulating in the furnace instead of being properly vented away from the furnace. Thus, it's important to make sure your carbon monoxide detector is working if you spot a yellow flame. If the detector goes off, find somewhere else to stay until your HVAC technician is able to inspect and repair your furnace. Also, keep an eye out for signs of carbon monoxide poisoning; leave your home if you experience nausea, confusion, fatigue or headaches.
Calling your HVAC tech when you notice a spike in heating bills, strange noises, or a yellow flame will save you from future hassles and more extensive repairs.