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Why Is My Lennox Furnace Blowing Cold Air Common Causes and Solutions

Why Is My Lennox Furnace Blowing Cold Air? Common Causes and Solutions


Why Is My Lennox Furnace Blowing Cold Air? Common Causes and Solutions

When a Lennox furnace blows cold air, the comfort of your home is at risk. Malfunctioning furnaces can end up costing you big time in the long run and can wreak havoc on your home’s temperature. If your furnace is blowing cold air, here are some causes and solutions to investigate.

Wrong Thermostat Setting

The first thing to check if your Lennox furnace is blowing out cold air is the thermostat setting. Make sure the temperature is turned up high enough and that the control switch is set to “Heat.” Additionally, the fan switch should be set to “Auto” rather than “On.” If this doesn’t fix the problem, try changing the batteries in the thermostat.

Insufficient Heat Source

Make sure your furnace has an adequate source of fuel, such as natural gas or oil. If it runs on electricity, check to make sure there’s not an interruption in the power supply. If the power is cut off, nothing will happen when the thermostat is set to “Heat”, and your furnace will not turn on. Additionally, check that the gas valve is fully open, and the pilot light is on and/or the main burners are burning.

Ventilation Problems

If your Lennox furnace isn’t getting the air it needs for combustion, the fan will run but no heat will be created. Therefore, it is important to regularly inspect your air filters and vents for any build-up of dirt and debris. If the vents or air filters are blocked, air will be unable to pass through the system, and your Lennox furnace will not create heat.

Broken Pilot Light

If your furnace does not start or your pilot light does not turn on, then you may have a broken pilot light. A pilot light consists of a small gas pipe which is connected to a gas valve and the main flame. When the pilot light is turned on, the gas heater will light. If this component is not working correctly, then your furnace will not heat your home.

Faulty Blower Motor

The blower motor is a component of the furnace that pushes the air to the vents. If it is in working order, then it will push hot air into the vents; if it has stopped working, then cold air will flow through the vents. A faulty blower motor can be the cause of your furnace blowing cold air.

It is advisable to call a professional technician if the underlying problems are beyond your knowledge or diagnosing ability. A professional technician can easily diagnose and repair any issues related to your Lennox furnace. If you wish to read more information about Lennox Furnace Blowing Cold Air try click here here If you need help troubleshooting your Lennox furnace, call Local Reliable Appliance Repair at (866) 516-1222 to arrange a service call.

Why Is My Lennox Furnace Blowing Cold Air? Common Causes and Solutions
Why Is My Lennox Furnace Blowing Cold Air? Common Causes and Solutions
Why Is My Lennox Furnace Blowing Cold Air? Common Causes and Solutions

Lennox Furnace Blowing Cold Air: Preventive Actions and Best Practices

For homeowners in San Diego with a Lennox furnace, preventive action and best practices can help avoid problems such as the Lennox furnace blowing cold air. In order to ensure the best possible heating experience and performance, there are several recommended steps that can be taken. Please consider the below itemized list of steps:

1. Check Your Air Filter

Regularly check and replace your air filter, as a clogged filter can prevent air from reaching the heat exchanger and cause your furnace to blow cold air. Depending on your home’s climate and other factors, it may be necessary to replace or clean your furnace filter every month or two. Doing so is an easy way to help keep your furnace running smoothly and maintain optimal performance.

2. Enlist Professional Maintenance

An annual inspection of your furnace by a local HVAC technician is a great way to help spot any issues before they arise. A professional can check that all parts of your heating system are working properly and make sure the system is running as efficiently as possible. They can also provide preventive maintenance services such as cleaning and calibrating the furnace components to help keep the system in the best possible condition.

3. Set the Thermostat Properly

If the thermostat is not set properly, this can cause your furnace to blow cold air. Ensure the thermostat is properly adjusted to the correct temperature and that all settings are correct. Also, check that the temperature is set in the “Heat” mode as some thermostats may accidentally be switched to “Cool” or another mode.

4. Check for Clogged Vents

Clogged vents can also prevent your furnace from properly heating your home. If there is inadequate exposure to fresh air, the system may be unable to generate sufficient heat. Therefore, check for any blocked or clogged vents and clean them if necessary.

5. Check for Gas Leaks

Dangerous and potentially hazardous gas leaks can cause the furnace to blow cold air. As a result, make sure to regularly check for any gas leaks that can be caused by breaks, corrosion and other hazards. If the gas supply has been shut off for any period of time, contact a professional HVAC technician to inspect the system before turning it back on.

By taking the preventive action and best practices outlined above, homeowners with Lennox furnaces can help avoid issues like their furnace blowing cold air and ensure that their heating system is operating optimally.

Average Repair Cost for "Lennox Furnace Blowing Cold Air" in San Diego

Having a Lennox furnace blow cold air isn't a pleasant experience. If you live in San Diego, you can make a call to Local Reliable Appliance Repair{:target="_blank" rel="noopener"} for detailed, professional advice.

The repair or installation cost of a Lennox furnace depends on the complexity of the problem and the necessary materials. At a minimum, the repair cost in San Diego starts at $150 while a complex repair could cost up to $700 or more.

Below is a list of the most commonly replaced parts and their cost:

  • Ignitor ($45 or $90 with mounting kit)
  • Blower motor ($200-$330, refurbished motor $310 with housing)
  • Heat exchanger ($500-$900)
  • Flame sensor ($137)
  • Fan limit switch ($80)
  • Limit control ($150)
  • Relay ($108)

In addition to parts, the cost of repair will include the cost of materials such as wiring, fittings, and whatever else the technician deems necessary. Repair and installation labor cost in San Diego is between $45 and $100 per hour.

For the best outcome, it's best to contact a professional and get detailed advice specific to your issue. To contact a reliable and knowledgeable technician, call Local Reliable Appliance Repair at (866) 516-1222{:target="_blank" rel="noopener"} or visit their website here{:target="_blank" rel="noopener"}.

Are You Experiencing a Lennox Furnace Blowing Cold Air?

In the heat of a San Diego summer, a broken furnace can seem like an unaffordable luxury. Unfortunately, if your Lennox Furnace is blowing cold air, you may have to invest in repairs or even replacement.

The good news is that you don’t have to carry the burden alone. If you’re looking for reliable, friendly, and affordable HVAC or appliance repair services, look no further than Reliable HVAC & Appliance repair.

As a family owned and operated HVAC and appliance repair company, Reliable offers same-day service in San Diego and the surrounding areas in Southern California. They have a team of highly trained technicians, each of whom has a minimum of five years of experience in the field.

Reliable offers fast, fair, and affordable pricing. And as a first-time customer, you can get $25 off labor on your next appointment! Get in touch with Reliable today to get the help you need to get your Lennox furnace back up and running.

Don’t let a broken furnace put a damper on your summer. Contact the knowledgeable technicians at Reliable HVAC & Appliance Repair and get the highest quality repair service for the most reasonable price. Call (866) 516-1222 or email them today!

FAQ: Why Is My Lennox Furnace Blowing Cold Air?

Common Causes and Solutions and Lennox Furnace Blowing Cold Air

What Causes Furnace Blowing Cold Air?
It's possible that your furnace may be blowing cold air due to a few different factors. It could be a thermostat malfunction, a gas valve issue, blocked air filters, or a blockage in the air ducts. In most cases, it can be fixed quickly and easily.

How Do I Fix My Lennox Furnace Blowing Cold Air?
If your furnace is blowing cold air, the first step is to locate the cause. Common causes of a Lennox furnace blowing cold air include a thermostat malfunction, a gas valve issue, blocked air filters, and blockage in the air ducts. Once the cause is identified, the issue can typically be fixed quickly and easily.

Should I Call a Professional if My Lennox Furnace Blowing Cold Air?
It is a good idea to call a professional if your Lennox furnace is blowing cold air. A professional can quickly and accurately diagnose and fix the issue. If the problem appears to be more complex or dangerous, they can also provide advice on how to proceed.

If you're experiencing issues with your Lennox furnace blowing cold air, call Local Reliable Appliance Repair at tel:(866) 516-1222 for help.