HVAC Services in New Braunfels, TX

New Braunfels sits along the Comal and Guadalupe rivers, and the surrounding terrain holds moisture year-round, creating a latent cooling burden that standard systems sometimes struggle to keep up with. If your AC runs regularly but the home still feels sticky, the system may be oversized, which causes it to short-cycle and shut off before pulling enough moisture from the air. A technician can evaluate whether system sizing, refrigerant charge, or a clogged condensate drain is the root cause.

A musty odor from the vents almost always points to mold or mildew growth inside the air handler, most often on or around the evaporator coil where condensation collects. In high-humidity environments like New Braunfels, coils that are not cleaned regularly become a breeding ground for microbial growth. Professional coil cleaning and treatment eliminates the odor at the source and improves the air quality moving through your home.

Hissing typically indicates refrigerant escaping through a leak in the system, while bubbling or gurgling sounds often point to refrigerant moving through a section where it should not be in liquid form. Both sounds suggest a refrigerant issue that needs prompt attention, since running a system low on refrigerant damages the compressor over time. A licensed technician can locate the leak, make the repair, and recharge the system to the correct level.

Warning signs include water pooling around the indoor air handler, a musty smell near the unit, or the system shutting off unexpectedly due to a float switch activation. New Braunfels homeowners deal with clogged drain lines more often than homeowners in drier climates because the system produces more condensate in humid conditions. Clearing the line and treating it to prevent algae buildup is a standard part of a seasonal HVAC maintenance visit.

Yes. Sigma Air offers 24-hour emergency service every day of the week, including weekends and holidays. For scheduled maintenance and non-emergency repairs, our team works to accommodate appointment times that fit your schedule. Call 210-610-2332 or contact us online to book a time.

Clear a path to the indoor air handler and ensure the outdoor unit is accessible with at least two feet of clearance around it. If you have a specific concern, note when the symptom started and what conditions triggered it, since that information helps the technician diagnose faster. You don’t need to do anything else — our technician arrives prepared to handle the evaluation from the moment they walk in.

If the system is more than 12 years old and the repair cost runs above 40 to 50 percent of what a new system would cost, replacement usually provides better long-term value. In New Braunfels, where systems run hard through long humid summers, equipment that was borderline a few years ago tends to fail more frequently as it ages further. A Sigma Air technician will give you an honest breakdown of both options so you can make the decision that fits your situation.

Most HVAC manufacturers and industry guidelines recommend two maintenance visits per year, one in spring before the cooling season and one in fall before the heating season. In New Braunfels, the spring visit is especially important given the humidity and the pollen and organic debris that accumulates on outdoor coils over winter. Enrolling in a maintenance plan makes it easy to stay on schedule without having to remember to book each appointment separately.