iAir Services Blog: Posts Tagged ‘Furnace Repair’

The Most Important Repair Your Furnace May Need!

Monday, November 25th, 2019

During the short winter season when you run your gas furnace, your main concern will be that it works the way it should and provides the heat necessary for household comfort. Safety, however, is another concern. We don’t want to be alarmist and make you think the gas furnace in your house is a constant source of potential danger. Modern furnaces are constructed with the uppermost safety in mind, and few furnaces will create any hazards provided they receive routine maintenance inspections from professionals and are repaired promptly when the need arises.

But there is a specific repair issue we want to address—it’s the most important repair your furnace may need, because it is a major safety hazard. And that repair is…

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You May Need Replacement Services Instead of Furnace Repair

Monday, November 20th, 2017

furnace-replacement-repairWith winter on the way, now is the time to give your furnace a thorough look. The fall weather is still relatively mild, but in a few weeks, you’ll have need of your heating system on a daily basis, and if there are any problems with it, you need to spot them before the winter begins in earnest. This is especially true with older systems that may have an expired warranty, and if you’re having trouble with such a device, you should be prepared to consider replacing it instead of repairing it. Sometimes, the money you intend to spend on repairs would be better served going into a replacement system instead.

But how can you tell when a furnace needs replacing and when repairs are enough? Frankly, only the homeowner can answer that question. Every furnace is unique, and you are probably more qualified than anyone to determine if it has another winter left in it, or if you should replace it now. There are a few guidelines that can help you make that decision, however.

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What is Short-Cycling?

Friday, February 20th, 2015

Short-cycling is one of the most damaging behaviors that a furnace can experience, causing all sorts of problems in other parts of the system and increasing the chance of a complete breakdown. It is characterized by the system rapidly turning itself on and off over and over again for a long period of time. Let’s take a look at what the causes of short-cycling are, and how you can prevent it from happening.

The Process of Short-Cycling

Short-cycling is caused by the furnace overheating, which activates a safety device called the “limit switch.” The limit switch shuts down the entire system to prevent it from damaging itself by overheating, but it doesn’t actually address the cause of the overheating. The limit switch is simply a stopgap measure, designed to preserve the health of the furnace as much as possible until the source of the overheating can be fixed. Once the furnace has cooled down sufficiently, it will reactivate in response to the thermostat. It will then overheat again, provoking the limit switch and starting the whole cycle over again. If the source of the overheating isn’t found and fixed right away, this prolonged cycle of turning on and off can cause extreme damage to parts of the furnace. The heat exchanger can develop cracks from the strain, causing a fire risk and releasing combustion gases into the ducts.

What Causes Short-Cycling?

The most common cause of short-cycling is actually one of the easiest furnace problems to fix. All furnaces include an air filter in their air return ducts, designed to protect the system from dust and debris that might otherwise damage it. If not cleaned or replaced every couple of months, however, the air filter will become so clogged with dust that it will prevent the flow of air into the furnace. This causes the internal temperature of the furnace to steadily rise, kicking off the whole short-cycling problem. The easiest way to prevent short-cycling, therefore, is to have your furnace air filter changed at least once every other month.

If you think your furnace may be in need of repair, call Intelligent Air Services. We provide heating repair services throughout Lakeway.

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