5 Furnace Specifications to Check Before Purchasing


Changing a furnace is always a challenging endeavor. After years with your current one, you might start to notice that your heating bill is steadily increasing or simply isn’t producing enough heat anymore. This may indicate that it needs replacing. However, with all the furnaces in the market today, how do you identify which one is best for you and your family’s needs?

Energy Efficient

Did you know those old furnaces are only 65% efficient? As the furnace ages, this efficiency rating will drop even more, increasing your monthly energy costs.

There are furnaces with a 98% efficiency rating. However, it does not mean that you need those high-end products. There are furnaces with only a 95% efficiency rating for significantly less, and they still do a great job of keeping your bills at bay. 

On top of that, it is easy to control the inefficiency by installing programmable thermostats or regularly replacing your air filter.

Quiet Operation

There are furnace models that are too noisy during operation. Many create a loud, blowing noise which is hated even by pets. While you might think you can get used to this noise, this might result in restless and low-quality sleep./ Look for a furnace that performs quietly for comfort and peace of mind.

Humidity Control

Buyers have two options for furnaces. They can purchase a furnace with a built-in humidity control system or buy a model with a humidifier and a dehumidifier. Either way, humidity control is vital as it provides homes with comfort.

It can be helpful depending on the seasons. For example, during winter, the air can be dry and cold, forcing the furnace to work harder. Humidity control ensures your air contains the proper amount of moisture to encourage a better-functioning HVAC system and healthier air.

Great Warranty

Much like any appliance, try to ask if the furnace you’re considering comes with a warranty. Never buy a furnace without a warranty. It is a way to ensure that buyers don’t end up paying for defects in the furnace and proof that the company is confident in its product. If a furnace is well-made, the manufacturer should have no trouble providing a warranty.


Above all, the furnace should be durable. It should be able to withstand minor breaks and last a long time. Choose a well-known brand with a good reputation and good reviews. You can even ask your local HVAC installers for references from other satisfied customers. That way, you would have first-hand accounts of their service.


All things must come to an end, including your old furnace. But replacing it should be easy as long as these specifications are checked before buying. After all, a furnace is a vital appliance to have, especially during the coldest days and nights. Before buying, make sure to check if the product is the best for your needs, budget, and specifications.

Mainline Heating and Air is a heating and air conditioning service company serving clients since 1989. With more than 30 years in the industry, we are still serving customers in installing, repairing, and maintaining HVAC systems. Our technicians are available from 7 am to 5 pm, from Monday through Friday. Call us through our hotline (205) 664-4751 to schedule an appointment today.

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