Schedule Appointment
Request a quote, book a service appointment, or ask a question.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Request a quote, book a service appointment, or ask a question.
Long hauls under the southern sun can put brutal pressure on your rig’s climate control, especially if your condenser, blower motor, or refrigerant system is anything less than 100%. You could be hauling freight down I-65 or navigating construction zones off Highway 431, without a cool cab, you may lose some sanity.
So, let’s walk through real-world tips to boost your HVAC’s performance and keep your truck road-ready, no matter how high the mercury climbs.
Before the season hits full swing, get ahead of potential failures with a full HVAC system checkup. Many issues are preventable if caught early. Leaks, worn-out components, and electrical hiccups tend to show themselves before the heat becomes oppressive.
If your HVAC hasn’t been looked at since last summer, don’t roll the dice. Tennessee humidity mixed with a stressed-out system is a recipe for uncomfortable driving and unexpected downtime.
Here’s what to include in your inspection:
Airflow will ensure great HVAC performance. Even if your compressor’s healthy and your refrigerant is topped off, you won’t get proper cooling without unrestricted airflow. Over time, road grime, pollen, and bugs may clog your condenser, while interior dust blocks your cabin filter.
One of the quickest performance upgrades? Pull and replace that dirty air filter with a high-efficiency OEM or aftermarket option designed for heavy-duty trucks. Some filters now come with activated carbon layers that also reduce odors and allergens.
Also, make sure your vent controls and blend doors are functioning properly. If you're stuck in one mode, say, defrost or floor only, you’re probably dealing with a worn blend door actuator or a faulty switch.
If your system isn’t blowing as cold as it used to, you might need more than a top-off. A full AC recharge, done right, involves vacuum testing the system for leaks, draining any moisture, and refilling with the correct amount of refrigerant and lubricant.
Don’t attempt this project yourself unless you’ve the right tools. Overfilling the system can be just as bad as running it low—it increases pressure, risks blowing seals, and can damage the compressor.
Shops around Springfield offering certified HVAC service will use:
Trucks built before 2015 may still be running with original blower motors, compressor clutches, or thermostatic switches that are well past their prime. Even if they haven’t outright failed yet, degraded components reduce efficiency and can cause uneven cooling.
Consider upgrading to modern, high-efficiency parts:
Yes, it’s an investment, but in a world where downtime kills revenue, smart upgrades mean more uptime and fewer repairs.
Believe it or not, your driving habits affect HVAC performance. In Springfield’s thick summer air, even a little efficiency gain goes a long way toward keeping things cool. Here’s a quick checklist to keep your system from overworking:
Before the first 90°F day hits, work this simple checklist into your truck's preventive maintenance routine:
If your truck’s HVAC performance has been “just okay,” that’s not good enough for 2025’s summer. Be proactive. With Brant Jones, we offer a couple of small tweaks today—filter swaps, system inspections, and it can be the difference between cruising in comfort and sweating through your shirt on I-24.
And if it turns out your system needs more serious help? We understand diesel HVAC inside and out. For drivers around Springfield, Tennessee, staying ahead of the heat starts now. To learn more about overheating trucks, not just in your cabin, read our article on the three common causes of overheating.