Commercial Heating and Cooling Repair and Maintenance
Commercial heating and cooling service from Caswell Heating Air Plumbing reaches buildings across East Alabama. Below are the services we offer, how preventive maintenance works in general, and how ventilation behaves in a warm-humid climate.
Commercial HVAC Service We Provide Across East Alabama
Commercial equipment fails differently than residential equipment. Units are larger, they run longer hours and a failure affects staff, customers and tenants at the same time. Our commercial service covers the following.
Cooling repair. When a building will not cool, the cause can sit in airflow, refrigerant circuits, coils, drains or controls. Parts are replaced only after the cause is found, and replacement is discussed when repair stops making sense.
Heating repair. Many commercial spaces heat with heat pumps or gas furnaces. Both are worth a look in early fall, before a cold morning exposes a weak unit.
Ductless mini-splits. Older buildings without ductwork and newer additions can be served by ductless systems, which suit spaces the main system cannot reach.
Thermostats and controls. Schedules, setpoints and sensors decide how hard a system works. Well set controls keep a building comfortable when it is occupied and save energy when it is empty.
Ductwork repair. Leaks and disconnected runs waste conditioned air and cause hot and cold rooms. Duct repair can pair with indoor air quality solutions when air movement and filtration need attention.
Emergency service. When a system stops, 24/7 emergency service is offered. Use the contact page to tell us what is happening and where the building is.
Where We Provide Commercial Service
Our base is Opelika. Commercial service is available in Auburn, Lee County, Phenix City, Valley, Salem, Waverly, Loachapoka, Beauregard, Smiths Station and Macon County. See our service areas for the full list.
Ventilation and Economizers in a Humid Climate
Lee County sits in climate zone 3A, which is warm and humid. That matters for commercial buildings because an occupied space needs a steady supply of outdoor air. Ventilation standards such as ASHRAE 62.1 set minimum outdoor air for commercial spaces based on how they are used and how many people are in them.
Most rooftop units meet that minimum with an outdoor air damper. Many also have an economizer, a set of controls that opens the damper wider when outdoor air can cool the building for less money. The University of Illinois EnergySense program explains that an economizer raises outdoor air intake above the ventilation minimum when it helps cooling, and that it needs periodic maintenance and proper programming. Poorly programmed economizers can increase energy use.
In East Alabama, the risk is humidity. A cool spring morning can still carry a lot of moisture, and a controller that looks only at temperature will pull that moisture into the building. A damper stuck open does the same thing all summer, and the cooling coil is left to remove water the system was never meant to handle. A damper stuck closed leaves occupied rooms short of fresh air.
For any rooftop unit with an economizer, the useful questions are whether the damper moves, whether the actuator and sensors respond and whether the minimum outdoor air position matches how the space is used. If a unit has lost its economizer function or its settings no longer suit the building, the options are to repair, adjust or leave it alone, and you should hear each one explained before you decide.
Preventive Maintenance for Commercial Equipment
Preventive maintenance puts the checks on a schedule so failures are found during a planned visit instead of during a busy week. Our guide to preventive HVAC maintenance for businesses explains the reasoning in more detail. The right scope depends on the equipment in the building, so it is worth talking through before anything is scheduled.
Maintenance generally focuses on the parts that decide whether a system runs well:
- Air filters and airflow through the unit.
- Coils, condensate drains and drain pans, which matter more in a humid climate.
- Belts, motors, fans and electrical connections.
- Economizer dampers, sensors and thermostat settings where a unit has them.
- Heating components before the cold season and cooling components before the hot one.
If you also own your home, ask about our Comfort Club maintenance membership.
Repair, Replacement and Financing
Repair makes sense when the unit is otherwise sound. Replacement is worth discussing when failures keep repeating or the equipment no longer suits the space. Both paths should be explained so the decision stays with you. 100% financing is available, and our financing page explains where to start.
Commercial HVAC Service FAQs
What kind of commercial HVAC service do you provide?
Our commercial work covers cooling and heating repair, ductless systems, thermostats and controls, ductwork and preventive maintenance. Send us the building’s equipment and symptoms, and we will say whether the job is a fit.
What should a commercial maintenance visit cover?
The scope depends on the equipment, but it generally centers on filters, coils, drains, motors, belts, controls and any economizer dampers. Ask what will be checked before you schedule, and send questions through our contact page.
Which East Alabama communities do you serve?
Our commercial service area covers Opelika, Auburn, Lee County, Phenix City, Valley and Macon County, along with nearby communities listed on our service areas page.
Why do commercial cooling systems struggle with humidity in East Alabama?
Our warm-humid climate means outdoor air carries moisture for much of the year. If an outdoor air damper or economizer lets in too much of it, the unit works harder to cool and dry the building. Damper operation and controls are worth checking when humidity is the complaint.
How much outdoor air does my building need?
The answer depends on how the space is used and how many people occupy it, and ASHRAE 62.1 is the reference most designers use. A change of tenant or layout is a good time to ask whether your unit is still set correctly.
How do I schedule commercial HVAC service?
Use our contact page to describe the building, the equipment and the problem. Request commercial HVAC service and we will follow up with next steps. If the system is down, mention that it is an emergency.
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