Why Your Heater Is Blowing Cold Air

Heating can be taken for granted until something goes wrong. In many cases, it can be on an extremely chilly day causing a little panic as to what to do.

Perhaps the most scariest situation is when your HVAC System seems to be working fine, but only cold air is coming out.

Glendale, AZ heating_servicesRegardless if the fix is easy or more complex, HVAC Professionals are well-versed in diagnosing and fixing the problem. Even though Furnaces are designed to be resilient, it is important to schedule annual maintenance for those systems. Doing so will help prevent those slowly developing problems from becoming emergency repairs.

Every Furnace is typically made of four components: The Fuel System, Burners, Fans and Ductwork .In order for your Heater to function properly, all components need to be working.

In the case of Heat Pumps, the air circulated is slightly lower than body temperature, and many think the heating coming from the Ductwork is not working, when in fact it is. However, there are times when Heat Pumps and other kinds of Heaters really are blowing out cold air. Here are the three main reasons why:

1. Faulty Controls/Thermostat

Sometimes the reason for cool air is as simple as a thermostat turned to the cool setting, or in many cases, the batteries are not working on a digital thermostat. This is one of the first things an HVAC Professional will check.

Newer HVAC Systems rely on computer automation, and like a Personal Computer, a glitch can occur which may cause the system to lock. The reasons for this kind of malfunction are numerous, ranging from dirt to power surges, but the overreaching problem is something caused the limiters to shut off.

A Furnace may appear to be functioning, but the automation is not allowing fuel delivery. As a result, the fan is only blowing cold air through the Ductwork.

This is a common problem HVAC Professionals find and they are capable of determining if there is a component that needs to be replaced or if the existing hardware can be fixed.

2. Damaged Ductwork/Clogged Filters

This problem has the tendency to develop slowly. In other words, the air coming from your Glendale home Furnace may feel cooler than normal, but progresses over time to a point where service is required.

Additionally, this problem can be costly from an energy perspective because an HVAC System has to work harder in an attempt to get temperatures to desired levels. Over an extended period of time, the life cycle of a Heater may be shortened.

As a filter becomes clogged, the harder it becomes to get warm air to push through for proper Heating. In addition to the thermostat, checking the Furnace Filter is one of the first things an HVAC Professional will do to diagnose why the Furnace is blowing out cold air.

What may be more insidious are problems with the Ductwork. The Heating System can be fine on all fronts, but could still blow out cool air throughout, or possibly create hot or cold zones in a building.

This is all contingent on where holes or unhinged Ductwork lies. Depending on the nature of the problem, it could be slowly developing or an instant problem, and an HVAC Professional will carefully examine all of the venting framework to see where the problem lies.

Again, annual maintenance will catch these problems more often than not, but occasionally something else can cause a problem, such as construction or bumping into something, that will require immediate attention.

Glendale, AZ heater_repair_service3. Burners

With newer Gas Furnaces, a Burner replaces the old pilot flame. These work in the same manner as an incandescent light bulb filament. When the furnace is on, the burner will heat and glow orange, igniting the Fuel Source creating heat to be blown through the fan. In the case of Electric Furnaces, these elements create the same environment for the fan.

The problem could lie with a single igniter or a series of elements and replacement is specific to the kind of HVAC System used. Your HVAC Professional will not only find the right component for replacement, but is qualified to install it in a high voltage environment.

Regardless of the situation, HVAC Professionals can not only provide comfort but piece of mind when a Furnace is malfunctioning with guaranteed repair.

If your Heating System is blowing out cold air, not working the way you think it should, if your utility bills seem higher than normal, or it’s been over a year since you’ve had routine maintenance, you should schedule an appointment at your convenience.

For quality service and peace of mind in the Glendale, AZ area, call Christian Brothers Plumbing, Air Conditioning, and Electric today at (602) 281-4097..