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What to Know About Fan Efficiency Ratings

When you’re shopping for AC repair services close to Chicago, IL, you’re likely only thinking about how you can fix your unit with quality workmanship for the best price. But if you dig a little deeper, you may come across a term that’s well known in the HVAC industry: fan efficiency ratings or FER.

FER is a set of national standards meant to regulate furnace fans in residential buildings. This standard dictates how much power a fan is allowed to consume. Though the standards were established by the Department of Energy in 2014, they will only take effect this year. The Department of Energy expects that these standards will reduce the amount of energy furnace fans consume by approximately 40 percent.

How Does this Affect Me?

If you’re shopping for AC repair services close to Chicago, IL, you may not have to worry too much about FER just yet. Only when it comes time to purchase a new furnace will you need to consider the impact of fan efficiency ratings on your HVAC needs. Essentially, what these new standards do is place strict rules about what kind of furnaces manufacturers can create and sell.

As a result of fan efficiency ratings, many manufacturers will need to change the components that they’ve traditionally used to manufacture their equipment. This means extra expense, which will likely be passed on to you, the consumer, when you decide to replace your HVAC system. However, on the flip side, given the need to sell these new types of furnaces, there’s a chance that manufacturers will be incentivized to find new, affordable ways to improve the FER of their furnaces. Either way, this is something to consider if you’re within a few years of needing to replace your furnace.

It may make sense to go ahead with a replacement before older furnaces with low fan efficiency ratings become obsolete so you can avoid the high upfront cost of the new furnaces. However, you’ll need to balance that decision-making process with the fact that units with a lower FER will cost more to run and may not last as long.

Big Electricity Savings

Though there is a cost associated with the new fan efficiency ratings, the projected savings are significant. According to the Appliance Standards Awareness Project, the net present value of savings through 2014 for the United States could amount to as much as $28.8 billion.

Client Testimonials

Read the opinions of our satisfied customers.

5 stars

This was my first time as a Deljo customer, and I was very pleased. My technician, Giovanni, was very thorough and diligent. He serviced my furnace and identified a faulty sensor that was causing the unit to shut itself down. Deljo ordered the part, and Giovanni replaced it a few days later. Overall, the team at Deljo was great. The dispatcher kept me informed about Giovanni’s arrival time, and the supervisor assisted Giovanni when he was diagnosing the problem with the furnace. I highly recommend Deljo.

Paul D. 10/15/2026

5 stars

I’ve used Deljo for over 10 years now and they always do a good job. Izzy was the technician for this visit and he did an excellent job with my winter maintenance on my multiple units in the household. He also addressed an issue while cleaning the furnace blower wheel. His communication was clear and concise with what he planned to do to address the issue quickly. He was confident and I had 0 concerns or questions. Great job Izzy!

Jeff S. 10/14/2026

5 stars

Paul was great! Arrived on time and completed maintenance on my humidifier, tankless water heater, and two furnaces. All work was performed under my Gold Star maintenance program, so all maintenance charges were covered. Paul did provide a few proposals for additional services on furnace & tankless water heater, but those were emailed to me for further consideration. Paul was friendly, knowledgeable, and answered all my questions.

Jack N. 10/12/2026

5 stars

Gabe did an excellent job with our annual service visit. He arrived in the early part of our service window, was friendly and knowledgeable, and got the work done in a very reasonable amount of time. I have great confidence in Deljo, and am a long-time customer.

Ruth C. 10/9/2026

5 stars

I’ve been using Deljo for 20 years for HVAC but now venture into enlisting their plumbing services. Bashar was very courteous, efficient & informative, and I’d definitely request him again for the next plumbing job. Great experience!

Christopher R. 10/2/2026

5 stars

Working with Deljo is always a good experience, and today’s appointment with Izzy was no different. He was able to come early which actually worked better with our schedules, but called me ahead of time to make sure that was okay. He was friendly and knowledgeable when he explained the work he had done during his visit and our options for fixes. He was also able to schedule a quote appointment for us while he was still here. We would highly recommend working with Izzy and the Deljo team!

Lauren H.  9/25/2026

5 stars

Drew performed the seasonal maintenance on my AC. It needed some repairs and updates and he was able to fix everything at the same appointment. He also noticed issues with the hot water heater and we were able to get ahead of that, as well.

Emily W. 9/11/2026

5 stars

I would leave six out of five stars if I could! My technician Jorge went above and beyond on his service. There was buildup in the rental property’s toilet from the previous tenant. One maintenance person did a surface level job of cleaning but did not fully remove the obstruction. Jorge went above and beyond and came to a solution and even explained the perpetual problems older toilet models can cause. Moving forward with this insight, I can perform my own upkeep the previous tenant did not. Thank you kindly!

Kayla K.  9/15/2026

5 stars

We just had our new boiler installed by Jonathan and Carlos. First rate work! They arrived on time, removed the old boiler, installed the new unit, and explained the features. Both guys were pleasant. Bring on the cold this winter! We are ready thanks to the team from Deljo.

Edward B.  6/26/2026

5 stars

Deljo’s heating and cooling team was awesome to work with. As a first-time homeowner, I really appreciated how clearly they explained everything and answered all my questions. From the quote to the install and follow-up, the service was top-notch. Highly recommend!

Lindsey A. Chicago, IL

5 stars

Matt did an amazing job. He serviced our home and our rental property. He gave us options to help our systems run more efficiently. He also told us about Deljo’s new plumbing inspection which was very affordable. He is great!

Jordan R. Chicago, IL

5 stars

We had a problem with our Humidifier and called Deljo. Jesus came out to help and was amazing. He was extremely knowledgeable, detail oriented, and super courteous. Amazing customer experience!

Jeff C. Chicago, IL

5 stars

Jordan and Jesus were extremely helpful and knowledgeable! We would 100% work with them and have them back. They were both very professional and efficiently fixed our heating system.

Emily L. Chicago, IL

5 stars

Shout out to Ernesto for coming out and servicing our furnace and air con. Deljo provides a great service and glad to trust them with our HVAC for our small business.

Lauren H. Chicago, IL

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