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AC running but not cooling your McAllen home? Here are the seven most common causes, which ones you can check yourself, and when to stop and call a technician.
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Ice on the refrigerant line or indoor coil means restricted airflow or low refrigerant. Here is how to thaw it safely and what has to be fixed afterward.
AC Repair
Water around your air handler or dripping through the ceiling? Here is what causes AC water leaks in humid South Texas and the first thing to do about it.
Energy Savings
Fourteen ways to cut summer electric bills in South Texas, ranked from free to expensive, with an honest assessment of what each one is actually worth.
AC Repair
A step by step guide for Rio Grande Valley homeowners when the AC quits: what to check, what to do while you wait, and when it is genuinely an emergency.
Energy Savings
What temperature to set your thermostat in the Rio Grande Valley, how much setback actually saves, and why turning the AC off completely backfires here.
AC Repair
A methodical checklist for an air conditioner that is completely dead, covering thermostat, breakers, disconnects, float switches, and the service door switch.
AC Repair
Buzzing, clicking, screeching, banging, or gurgling? Here is what each air conditioner noise usually means and which ones mean shut it off right now.
Buying Guides
How to tell when repairing your air conditioner stops making financial sense, with the age, refrigerant, and repair cost thresholds that actually matter.
Seasonal
How to protect your HVAC system before a storm, what to do if the outdoor unit floods, and why you must never restart a submerged condenser.
Indoor Air Quality
Cold but humid is the most common comfort complaint in the Rio Grande Valley. Here is what causes it and the four ways to actually fix it.
Buying Guides
A straight comparison of ductless mini splits and central air conditioning for Rio Grande Valley homes, including cost, humidity control, and when each one wins.
Buying Guides
What SEER2 means, why Texas has a higher federal minimum than the rest of the country, and how much the rating actually matters compared with installation quality.
Indoor Air Quality
Practical ways to improve indoor air quality in South Texas, ordered by what actually works, and an honest note on which popular products do less than advertised.
Maintenance
Exactly what a real HVAC tune up covers, what the readings mean, and how to tell whether the technician actually measured anything or just put a sticker on the unit.
Seasonal
A pre-season checklist for Rio Grande Valley homeowners. Nine things to do before April so your air conditioner is not the one that fails in July.
Maintenance
National guidance says once a year. South Texas run hours say otherwise. Here is the maintenance schedule that actually fits Rio Grande Valley conditions.
Maintenance
What Valley landlords and property managers should know about HVAC: turnover checks, tenant education, repair versus replace, and avoiding August emergencies.
Buying Guides
Air conditioners last 10 to 15 years in the Rio Grande Valley, shorter than the national average. Here is why, and what determines where your system lands.
Indoor Air Quality
Which MERV rating to use, why a higher number is not always better, and how often to change filters in the dusty Rio Grande Valley.
Buying Guides
Heat pumps suit the Rio Grande Valley climate unusually well. Here is how they differ from a standard AC, what they cost to run, and when a plain AC still wins.
Heating
Valley freezes are rare, which is exactly why they cause so much trouble. What to check on your heating system in the fall and what to do when a freeze warning comes.
AC Repair
The HVAC failures we see most often in McAllen, Edinburg, Mission, and across the Valley, why our climate causes them, and what prevents each one.
Energy Savings
Duct leaks waste 20 to 30 percent of your cooling, and in 130 degree South Texas attics the loss is worse than the number suggests. Here is how to find and fix it.
Buying Guides
The questions to ask, the license to verify, and the sales tactics to walk away from when hiring an HVAC company in McAllen or anywhere in the Valley.
Maintenance
What HVAC maintenance actually prevents, what it is worth in a climate where systems run eight months a year, and where the marketing overstates the case.
Maintenance
What rooftop units, restaurants, clinics, and retail spaces in the Rio Grande Valley need on a maintenance schedule, and why building pressure matters more than tonnage.
Reviewed by the A&A HVAC LLC service team, licensed HVAC technicians serving McAllen and the Rio Grande Valley.
Last reviewed for accuracy on . Guidance here is general. Diagnosis of your specific system requires an on site inspection.
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