Summer electric bill spike in St. Louis? Your AC is usually why. Five causes, what to check first, and honest fixes from a local team.
You open the electric bill, do a double take, and check that it is actually yours. Summer bills always run higher in St. Louis, but a genuine spike, noticeably worse than the same month last year, is usually your air conditioner telling you something. Cooling is the single biggest line item on a summer electric bill, so when the number jumps, the AC is the first place to look.
Outstanding...Giovani was superb..need him as a regular for our regular maintenance!
Response from the owner:Thank you, Brad! We're glad to hear you had a great experience with Giovani. We appreciate your feedback and will certainly keep your request in mind for your regular maintenance.
The repairman arrived at around 8:30 AM and spent about three hours working on the unit, which I purchased from them less than a year ago. At the end of three hours, he informed me that my unit was not working because I had the wrong filter in it. I raised a question about why it took three hours to replace the filter. I can't really explain his response because it was in technical jargon that I did not understand well enough to know what other questions to ask. The unit has a two year parts and labor warranty and a 10 year manufacturer parts warranty. unfortunately, I did not get the benefits of those warranties because, as the technician put it, the onus for using a less effective filter, rests with the customers. Then, he went on to describe to me the best filter choice, something the average customer would not automatically know. My greatest disappointment was being denied the benefits of my warranties.
On the plus side, once management became aware of my dissatisfaction, they reached out to me with an apology for any role they played in my dissatisfaction and, as a show of their good intentions, they shredded my check, subsequently, not charging me for their service. This response showed a genuine commitment to quality and efficient service, as well as a commitment to customer satisfaction. Consequently, I highly recommend Hoffmann Air Conditioning services.
Response from the owner:Thank you, James, for your 5-star rating; we truly appreciate your support!
I was distraught to find out our 20 year old HVAC needed to be replaced. Hoffman was beyond empathetic and took care of me within 24 hours during the heat wave. They were on time and very efficient. I have to have trust worthy people work on our house and be in our cocoon, therefore Hoffman has always been our contractor and always will be! They have become family;) I refer all of my clients to them!!!
Response from the owner:Thank you, Katie! We're so glad to hear that you felt supported during a tough time. Your trust means the world to us, and it's wonderful to know that we’ve become part of your family. We appreciate your referrals and look forward to continuing to serve you and your clients!
My experience was very pleasant. Nick was great got my problem taken care of. He explained how to use my new equipment . Thank you for a true 24 hr service.
Response from the owner:Tiffany, thank you for the 5-star review. We appreciate you and your business!
Very prompt, conscientious and personable. Work well done.
Response from the owner:Thank you, Kathleen! We appreciate your kind words about our team's promptness and attention to detail. Your feedback means a lot to us!
The tech was great. He showed up on time, was very polite, answered all my questions and got the job done. The service was also very reasonably priced.
Response from the owner:Thank you, Lisa! We're glad to hear you had a great experience with our technician. Your feedback about punctuality, politeness, and value is much appreciated!
Technician, Giovanni Leone, did such a great job in fixing our AC on a Saturday morning when the Temp is supposed to get up to 100 degrees, later today! I felt like we were in excellent hands and he explained everything he was going to do and then explained in even greater detail once everything was done! I told him if he ever wants to go into sales, he should! He has great personable skills! We have used Thomas Hoffmann before for our heating and cooling needs and they are always professional and trustworthy! My only mistake was not having them to come out to check our AC in the past 3 years!
Response from the owner:Thank you, Bill! We're so glad to hear about your positive experience with Giovanni. It's great to know that you felt well taken care of and appreciated his thorough explanations. We truly value your trust in us for your heating and cooling needs, and we look forward to serving you again in the future!
He came early and identified the problem ordered the part and put it in. He was professional, neat in appearance. I would say an asset to your company.
Response from the owner:Thank you, Robinette! We appreciate your kind words about the professionalism and neatness you experienced. It's great to hear that our team member made a positive impact. Your feedback means a lot to us!
Nick came by, identified the problem quickly and had it fixed. Great service!
Response from the owner:Thank you, Ted! We're glad to hear that Nick provided you with quick and effective service. Your feedback is greatly appreciated!
The technician that came to my house was awesome. He explained the issue and was 100% honest with me. He worked with my wishes and did a great job!
Thank you
Response from the owner:Thank you, Jacob! We're glad to hear that the technician provided excellent service and was honest with you. Your feedback is much appreciated!
Quick response, professional service. Made it out made the repair even on a holiday.
Response from the owner:Thank you, Lucas! We're glad to hear you appreciated the quick response and professional service, especially during the holiday. Your satisfaction means a lot to us!
Zach came out quickly and fixed our A/C on the 4th. He was pleasant and super efficient! A/C fixed and he was out of here, made our day for sure! Plus he likes dogs!
Response from the owner:Thank you, Beth! We're glad to hear that Zach was able to fix your A/C quickly and efficiently, and it's great to know he made your day better. We appreciate your kind words!
Response from the owner:Thank you, Rich! We're glad to hear you had an excellent experience with our customer service and repair work. Your feedback means a lot to us!
Nick was fantastic. He was a great communicator, efficient and educated me and let me take the drivers seat to decision making without feeling pushed. I will for sure recommend friends and family. Service like this doesn’t come around much these days.
Response from the owner:Thank you, Jennifer! We're glad to hear that Nick provided you with excellent service and made you feel empowered during the process. We appreciate your recommendations and look forward to serving you and your friends and family in the future!
Tom was prompt, courteous and got the AC running right away. I will call him again with any needs.
Response from the owner:Thank you, Elizabeth! We're glad to hear that Tom provided prompt and courteous service. We appreciate your trust and look forward to assisting you again in the future!
This is the 2nd time we have used this company for our hvac needs. Great company, fast response, tons of communication and they find the problem and fix immediately. Even during the very hot weather. Couldn't recommend them enough.
Response from the owner:Thank you so much for the kind review, Erin. We appreciate your continued support!
Very prompt response and very professional and conscientious repair service. Nick did a great job and is a very nice guy.
Response from the owner:Thank you, Rich! We're glad to hear you had a great experience with our repair service. Nick will be pleased to know his efforts made a positive impression. We appreciate your feedback!
I called on a Monday morning as air conditioning was blowing warm air. They were able to come to my house very early afternoon and fixed the problem. Would highly recommend and will use them again.
Response from the owner:Becky thank you so much for your great review. We appreciate your business and your kind words.
First, Rule Out the Boring Explanations
An honest company tells you this part first. Before assuming your AC is failing, check two things. Compare this month’s usage in kilowatt hours, not dollars, against the same month last year; if usage is similar but the bill is higher, your utility’s rates went up, and your AC is innocent. Then consider the weather: a stretch of 100-degree heat-index days forces even a healthy system to run harder. Your utility’s website usually shows both numbers side by side. If your usage itself jumped and the weather was roughly normal, keep reading. Something in your system is working harder than it should.
1. A Clogged Filter or Dirty Coils
The most common culprit and the cheapest fix. A loaded filter chokes airflow, and grime on the indoor or outdoor coils blocks heat transfer. Either way, the system runs longer cycles to hit the same temperature, and every extra minute shows up on the bill. St. Louis makes this worse: long cooling seasons, heavy pollen, and cottonwood fluff coating outdoor units by mid-June. Replace the filter and gently clear debris from around the outdoor unit. Deep coil cleaning is part of a professional tune-up.
2. A Slow Refrigerant Leak
Low refrigerant is sneaky because the AC still works, just badly. It runs longer, cools less, and removes less humidity, so you feel warm and sticky while paying more. If your bills have crept up over two or three summers while comfort has crept down, a leak is a strong suspect. This is a certified technician repair: find the leak, fix it, and recharge the system.
3. Leaky or Uninsulated Ductwork
In many St. Louis homes, ducts run through attics that hit 130 degrees in July. If those ducts leak, and studies suggest a meaningful share of homes lose a significant portion of conditioned air through duct leaks, you are paying to cool the attic. Telltale signs: rooms that never quite cool, dust buildup near vents, and bills out of proportion to thermostat settings.
4. Short Cycling
If the system starts, runs a few minutes, and shuts off over and over, that is short cycling, and those constant starts draw far more power than steady running. Causes range from a failing thermostat or capacitor to icing coils or a system that was oversized on day one. Short cycling also beats up the compressor, so it is worth a professional look sooner rather than later.
5. A System Simply Wearing Out
Efficiency declines with age. A 12 to 15-year-old unit can use more electricity than a modern high-efficiency system to do the same job, and in St. Louis, our humidity accelerates that aging. If your system is in that range and the bills keep climbing, the spike is part of the repair-or-replace conversation and deserves honest math, not a sales pitch.
What to Do Next
Check the filter, clear the outdoor unit, and compare your usage history. If the numbers still do not make sense, a diagnostic visit can usually pinpoint the cause in one trip, and you get a written explanation of what we found and what it costs to fix before any work begins.
Contact Tom Hoffmann Air Conditioning & Heating Today
Tired of paying for your AC’s bad habits? Call (314) 471-7625 or schedule service online. A real St. Louis dispatcher answers 24/7, and our AC repair team will tell you exactly what your system has been trying to say.
