We’re the #1 Choice for Local HVAC & Electrical Services

Jack Lehr Heating, Cooling & Electric has been specializing in residential and commercial HVAC and electrical services for more than 45 years. We are a local, family-owned business dedicated to providing exceptional service, the highest quality parts and equipment, and superior results.

365/24/7 Emergency Service

At Jack Lehr Heating, Cooling & Electric, we know that HVAC and electrical emergencies can happen when you least expect it, including outside of standard business hours. That’s why we offer our customers round-the-clock emergency service to repair any major HVAC or electrical issue.

Why Is My Furnace Blowing Cold Air?

There is nothing more frustrating than when the weather turns cold and your heating system stops working. If your furnace starts blowing cold air, or even air that is not warming your home, it is likely time to call an expert.

Furnaces can be complicated pieces of equipment and with DIY repair, you may end up voiding your warranty, leading to major complications in the future. Finding the right pieces to repair your furnace with can also become tricky and using the wrong replacement pieces could become a costly mistake.

There are a few common problems that may cause your furnace to blow cold air. Jack Lehr Heating, Cooling & Electric has been providing affordable heating services for over 45 years. We can help diagnose your furnace issues and get it back up and running. For furnace repair in the Greater Lehigh Valley area, call 888-454-7365.

Common Reasons a Furnace Will Blow Cold Air

Thermostat – It is true that a furnace that is blowing cold air could be a simple problem. The first thing you should check is your thermostat, if the fan is set to on, you will want to switch it to auto. This will stop cold air blowing in when the heat is not on. If you flip the switch on your thermostat and the furnace is still blowing cold, it could be a bigger issue.

Fuel Problems – Whether your furnace is fueled by oil, gas, or electric, if the fuel supply is cut off then the air will not be heated.

  • When it comes to oil furnaces the blockage could be due to clogged filters, these filters will need to be checked and replaced before the furnace can work correctly.
  • Gas furnaces may stop heating if the pilot light has been extinguished, though it may seem as easy as just lighting the pilot light, it is not a good idea to fuss with gas furnaces unless you are qualified.
  • Electric furnaces may stop working due to breaker issues if this keeps happening, it is best to call an electrician.

Failing Parts – Your furnace is made of a myriad of electrical components, as your system ages it is likely that these parts may fail. When this happens cold air will blow from your system, or your system may not work at all. Calling a trained electrician is the best way to diagnose what is going on, these parts can then be replaced quickly without further damaging your system.

Flame Sensor – The most common reason a furnace will blow cold air is due to a dirty flame sensor. When the sensor is dirty it may cause your furnace to start blowing hot air but then the air will quickly turn cold again and begin blowing into your home. You will need to call a qualified electrician so that they can clean the sensor and check for any other problems that may be present.

Contact Jack Lehr Heating, Cooling & Electric for Furnace Repair

Whether your furnace is blowing cold, or you are looking to install a whole new system, Jack Lehrs’ technicians have the knowledge and the equipment to help. Our certified technicians are trained in all the latest technology, we will never send a sub-technician to your home as we believe in providing exceptional service with every visit. All products and parts that we install are the highest of quality and we offer a 100 percent satisfaction guarantee on all work we perform.

When you call Jack Lehr, you can expect high quality workmanship at affordable prices.

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