Projects & Service Work
Serving St. Louis, MO & Surrounding Areas

October 8, 2025
We were contacted by the customer who needed to synchronize roofing repairs with flue replacement. Understanding that timing is crucial in such situations, we successfully co-ordinated with the roofing company to schedule the repairs. Our role was to conduct an efficient flue replacement, ensuring a seamless and punctual service from both ends. By utilizing our effective planning capabilities and quality replacement material, we were able to execute the job without any hitches. The amalgamation of proper scheduling and skilled service resulted in a job well done, leaving the customer truly satisfied.
Read More
October 2, 2025
Another amazing project we completed this week. During the initial consultation we were informed of several customer concerns with the existing heating and cooling system. High electric bills, hot/cold spots on home, static, and dust/allergy issues. As part of our installation we addressed and solved all the customer concerns by adding a humidifier, high efficient air filter and made some small duct modification. The Lennox Elite system designed for comfort and efficiency. Proudly serving Mehlville/Oakville
Read More
September 17, 2025
Customer reported issues with the kitchen exhaust fan causing ceiling stains and poor ventilation. Inspection revealed the exhaust system was never properly vented to the exterior, leading to excess heat and humidity buildup that could impact indoor air quality and AC efficiency. To resolve the issue, we core drilled a 14-inch opening through concrete, brick, and cinder block, and installed a properly functioning vent to the outside, improving airflow and overall HVAC system performance
Read More
September 10, 2025
Replaced outdoor condenser an indoor A coil because. when the unit an A coil is older then the senior technician on site it’s probably time to replace the unit.
Read More
September 4, 2025
We were contacted by a customer experiencing issues with their old HVAC system, due to a faulty compressor. Understanding the discomfort that such a problem can cause, we promptly responded by replacing their old system with a newer, more efficient model. To ensure a long-lasting solution, we installed a 2-stage heating and cooling system by Goodman, which is known for its durability and effectiveness. This superior HVAC system is built to last and will provide our customer with much-needed comfort for many years to come. We remain dedicated to delivering complete satisfaction to our customers.
Read More
September 3, 2025
Low airflow causing unit to freeze, added needed return air to allow system to work much more efficiently and supply the correct amount of air to home.
Read More
August 22, 2025
Customer was locked out and tagged out by Spire after reporting a gas smell. Several significant leaks were discovered and corrected throughout the home. Within a few hours we called Spire back to have the gas turned back on. Finally they can have a hot shower again! Proudly serving Creve Coeur and surround areas!
Read More
August 20, 2025
The customer called us for a 2nd opinion regarding their 40-year-old system which was giving them some trouble. Upon investigation, we identified compressor that was in dire need of attention. The poor quality connections stood out and a comprehensive overhaul was essential. Thus, we promptly put our expertise into play. We installed a new Qwik Lug terminal kit to enhance the machinery's functionality. To handle the system pressure better, a supco pressure switch was also added. Accompanying these installations, we performed a few other minor repairs. Who knew this old champ had still more to offer! Now, it's up and running smoothly again. The customer was amazed to see how we spun our magic to breathe life into their old system.
Read More
August 18, 2025
Today we installed a High Efficient Lennox heating and cooling system comprised of a 16 SEER air conditioner and 2-stage 97% efficient gas furnace. The customer immediately noticed the difference going from the main floor to the upper level. This particular system qualified for $600 in federal tax credits and $300 in Spire rebates. We also provide a 3-year parts and labor warranty with the manufacturer 10-year warranty! Proudly Serving Mehlville/Oakville Your locally owned and operated heating and cooling contractor
Read More
August 16, 2025
We were contacted by a customer with an urgent plea for help over the weekend as their air conditioning unit had abruptly ceased to function, turning their home into a mini sauna. With no delay, we responded to the emergency service call and found that the air conditioner required a few minor repairs and a thorough cleaning. We utilized a durable, top-rated product, the Titan capacitor, to fix the issue at hand. Post service, we are happy to report that the air conditioner is now operational and efficiently cooling the house, bringing back much-needed comfort to the customer's home.
Read More
August 14, 2025
The customer reached out to us due to issues with their outdoor unit. In response, we replaced their capacitor and thoroughly cleaned and checked the outdoor unit to ensure it was functioning optimally. The products we used during this service included an AM Rad capacitor, a Fluke voltage meter and amp clamp, Testo refrigerant gauges, and a UEI thermometer. These tools allowed us to provide an efficient and effective solution to the customer's needs. We're helping customers stay cool one system check at a time.
Read MoreAugust 5, 2025
We responded to a service call about a no air conditioning issue. Upon inspection, we discovered that the root of the problem was a malfunctioning fan motor in a 25-year-old system. We quickly sprang into action and repaired the system using a Titan Capacitor and a Rescue Fan Motor, two reliable products we trust. While the air conditioning system is now up and running, we did advise the customer about the potential benefits of replacing the old system in the long run. Always a pleasure to restore comfort and ease to our customers' homes.
Read More
July 29, 2025
We were contacted by a customer who had an air conditioner with a serious refrigerant leak problem. In order to address this issue, we provided our service of replacing the problematic air conditioner with an 18 SEER 2-stage high efficiency unit, known for its superior performance and energy savings. In conjunction with this, we used the General Electric Honeywell Thermostat for precise temperature control. The new installation ensures a cooler, more comfortable home environment and a considerable reduction in energy cost over the long term.
Read MoreJuly 29, 2025
We were contacted by the client for a mew Lennox 16 seer AC coil installation, offering them optimal cooling for their home. We chose Lennox for its reputable performance and the Nest Thermostat for its state-of-the-art technology, ensuring maximum energy efficiency. With our professional expertise and these high-quality products, we were able to deliver a comfortable, energy-saving solution for our customers, enhancing their home comfort with ease and efficiency.
Read More
July 25, 2025
We were contacted by the customer due to their 21-year-old Lennox system not functioning properly during this intense heat wave. Our solution was to replace the small, faulty capacitor that was causing the problem. We used our reliable titan capacitor to get the job done. We're glad we could get the system up and running again and help our customer stay cool in this scorching weather.
Read More
July 24, 2025
We were contacted by a customer to assist with an outdated unit that was raising issues. They were desperate for a speedy solution, which is just what they got! We quickly diagnosed the problem and used a contractor and capacitor to fix the system right up. We're pleased with the progress and the efficient solution we provided; their unit was up and running in no time! It goes to show, even the trickiest units can be brought back to life with a bit of expertise. Count on us for efficient and solution-driven services, always.
Read More
July 24, 2025
The esteemed customer sought our expertise to enhance their comfort levels. They needed an efficient, holistic solution for their enormous space; therefore, we focused on installing six new Hvac units - a large yet delightful task! In providing the ultimate solution to accommodate our client's needs, we selected our trusted partner – Lennox. Lennox's products deliver excellent quality and promise unrivaled performance, which aligns perfectly with our pursuit of customer satisfaction. We're thrilled to have been able to provide effective solutions and contribute to a more comfortable environment for our client.
Read More
May 16, 2025
Sometimes even small repairs on older systems are just not worth it. After being called out for emergency service for a failed capacitor, we found this system from 1997 barely hanging on. After replacing the capacitor we found the unit to be very inefficient and pressures exceeding normal operating range. Several issues during the initial installation are also proving to be a nuisance problem. With JLM we provide a full system diagnostic with every repair. We don’t just replace a part and move on. We want to make sure our customers are educated and have a understanding of what caused the issue and any potential problems in the near future. Proudly serving Fenton and surrounding areas!
Read MoreMay 14, 2025
We were contacted by a customer troubled by the loud noise from her heating and cooling system. Upon examination, we determined the unit was severely damaged and the air conditioner was non-functional. We replaced the system with an affordable option that aligns with the customer's budget, ensuring her comfort and peace of mind. For a complimentary estimate, please contact us at 314-221-3149.
Read More
Our team was contacted to install a powered humidifier to enhance the quality of air in the customer's home. We utilized a high-grade healthy climate power humidifier for this project. This device optimizes the moisture levels, creating a healthier and more comfortable living environment. We're glad we could assist in improving their home's indoor climate. We look forward to any future collaborations!
Read MoreThis west county customer had several concerns addressed and implanted when we changed out her heating and cooling system. During our initial estimate we went over concerns. Her husband has been suffering with dry nose and itchy eyes this past winter, she has mild allergies and the second floor was always warmer than main floor. To help combat the issues we replaced her existing furnace with a 2-stage furnace to help allow the warm air to naturally rise to the second floor on low stage, and if needed we had a high stage to get the house to temperature quickly. We also added a powered humidifier to help get her humidity level at a normal level to help her husband with the dry and “itchiness” felt during the winter months. A pleated 5” media filter was added to the system to help absorb and filter all the allergens. We added an additional furnace base to help maximize airflow to the second floor. With just simple and effective changes this customer will experience a new world of comfort in her home.
Read MoreThis Valley Park customer wanted to really boost their comfort level and have a true comfort high efficient HVAC system. By upgrading from a standard system to a high efficient 97% furnace and modulating air conditioner they will experience the ultimate comfort at home and see a significant energy savings in heating and cooling modes. To top it off, we added another degree of comfort and assurance to indoor air quality with high efficient media air filters and humidifiers to help them breathe easier. Each of these HVAC systems qualify for not only $1,200 in federal tax credits, but also $325 in Spire rebates.
Read MoreOne customer took advantage of the Spring promotion and upgraded her HVAC system. The 35 year old furnace and air conditioner were massive! Unfortunately, they were very inefficient at 60% efficiency. We replaced this tank of a furnace (over 200 lbs!), with a variable speed 2-stage 80% furnace. Even though the new furnace is smaller in size it has a higher capacity than the old tank. With a 2-stage variable speed furnace we can circulate air more effectively, control humidity and filter the air better! The upgraded air conditioner and furnace will save this customer $1,000’s each year and her home will be much more comfortable!
Read MoreThese 20 year old systems had several issues and the customer was expecting repairs in spring for air conditioning, but when the furnace failed it just made financial sense to replace each system. We worked well within the customer budget and replaced both systems. With a 10-year manufacturer warranty this customer can rest assured they will be comfortable with the unpredictable St. Louis weather.
Read MoreThis nearly 40 year old furnace served the homeowners without question until it just couldn’t anymore. Upon arrival customer informed me it was making a loud banging noise. What was actually happening a fireball was shooting out of the furnace! Good they called when they did as a serious and potentially deadly situation had been avoided.
Read More
This Heat Pump served the home owner for 41 years, but eventually like any mechanical system the cost of repair outweighed the advantages and costs to replace. We installed a 17 SEER heat pump with a electric air handler, and the new heating and cooling system's 16.2 SEER2 rating was qualified for $550 in Ameren rebates and $600 in federal tax credits. The customer is thrilled that he can finally have his house at 70 even in the most recent heat wave.
Read More
This project really came to life after the installation was completed. The customer decided to upgrade his Heating and cooling system to a 2 stage air conditioner and 2 stage furnace with a variable speed supply air motor. These enhancements allows for ultimate humidity control and allows equipment to operate at a much lower ratio than standard on/off equipment.
Read More
This Heat Pump served the home owner for 41 years, but eventually like any mechanical system the cost of repair outweighed the advantages and costs to replace. We installed a 17 SEER heat pump with a electric air handler, and the new heating and cooling system's 16.2 SEER2 rating was qualified for $550 in Ameren rebates and $600 in federal tax credits. The customer is thrilled that he can finally have his house at 70 even in the most recent heat wave.
Read MoreView More HVAC Projects
At JLM Heating & Air Conditioning, we take pride in delivering reliable, high-quality HVAC solutions to homes and businesses across St. Louis. Our Latest Projects page highlights recent installations, repairs, and system upgrades—including everything from heating and cooling to geothermal systems and indoor air quality improvements. See how our expert team is helping customers stay comfortable, efficient, and satisfied year-round.
