If those steps don't work, call a heating contractor. Despite the improved efficiency of most new furnaces, it's generally more cost-effective to repair a furnace than to replace it. However, if a key component such as the heat exchanger or control module fails, you're probably better off replacing the furnace, especially if the unit is more than about 15 years old. Furnaces typically last an average of 15 to 18 years.

Seattle furnaces can run nine months of the year. Based on the average temperatures in our area, if you compared running your furnace to a car it would get the equivalent of 1.8 million miles over its expected lifespan of 15 years. Your heating system will work hard for you, but like your car, doing routine and regular maintenance will keep it running smoothly, avoid problems, and keep your warranty intact.
First, check to be sure that your thermostat is set to “heat” and not “cool,” and ensure that the fan is set to “auto.” Then, check to be sure that the thermostat is set to a temperature high enough to trigger the furnace to emit heat. If your thermostat is properly set, ensure that it is getting power — check batteries, fuses and circuit breakers — and ensure that the interior components are clean. Dust and debris inside the thermostat can cause it to malfunction. Fortunately, this is usually an easy fix. In some cases, a malfunctioning thermostat may require adjustment or replacement.  

Do you need expertise in HVAC? Roswell and Marietta residents who choose Moncrief Heating & Air Conditioning get the benefit of over 118 years of reputable experience in air conditioning and furnace repair, service and installation. Whether you have an emergency or need routine service, we are available 365 days a year. Call us today at 404-350-2300.
Lennox is another leading manufacturer and marketer of gas central furnaces. Lennox central furnaces are available in single and multistage configurations, with some models capable of an AFUE rating of more than 90 percent. Lennox markets units that meet Energy Star requirements and makes others that it claims offer quiet operation. The average price of a Lennox central gas furnace is about $2,500 and Lennoxes are sold through their dealer network.
The chill of winter can be a scary thought when your furnace needs a repair. When the furnace in your home goes on the fritz, you need it fixed right away to keep your family safe and comfortable. Every BGE HOME technician is licensed in their trade and adheres to a stringent in-house certification program that guarantees their knowledge, affirms their commitment to the customer, and ensures excellence in completing every repair with the highest level of quality. Our technicians average 11 years in the HVAC industry, so you can rest assured that the technician who makes your furnace repair is knowledgeable and experienced.
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