HVAC Maintenance & Comfort Club Plan in San Antonio

HVAC maintenance is a scheduled check, cleaning and test of your air conditioner, heat pump or furnace. In San Antonio, the best schedule is a cooling tune-up in spring and a heating tune-up in fall. Modern Air Systems follows a written checklist on every visit, and the Comfort Club plan keeps both visits on your calendar every year.

Every HVAC maintenance visit follows a checklist, and we show you what we find.

After the visit you get a written summary of what we checked, anything that needs attention and an honest opinion on what can wait.

A spring tune-up gets your air conditioner ready before the long cooling season. Dirty coils, weak capacitors and clogged drain lines are the most common causes of summer breakdowns, and all three are easy to catch during HVAC maintenance.

A fall visit checks your furnace or heat pump before the first cold front. Gas furnaces need their safety controls and venting checked so they heat safely, and heat pumps need their defrost cycle tested.

Regular maintenance can also help keep manufacturer warranties in good standing. Many manufacturers require proof of professional maintenance, so keep your visit records.

The Comfort Club is our HVAC maintenance plan for homeowners who want to stop thinking about their system. Members get their spring and fall tune-ups scheduled for them, so the visits actually happen and problems get caught early.

Ask our team for current Comfort Club details and pricing when you book your next tune-up.

Is a maintenance plan worth it?

It depends on how you use it. A plan is worth it when the visits actually happen and the technician does real work, not a quick look and a sales pitch. That is how we run the Comfort Club: real checklists, written results and honest recommendations. If your system is new and you prefer to book tune-ups yourself, we are happy to do that too.

• It has been more than a year since your last tune-up
• Your AC runs longer than it used to or never seems to shut off
• Water is leaking around the indoor unit or the drain line is clogged
• There is ice on the refrigerant lines or the outdoor unit
• Rooms are uneven, or your upstairs is much hotter than downstairs
• Your electric bill went up without a clear reason
• You hear buzzing, clicking or grinding when the system starts
• Your heater smells like it is burning when it first comes on

If you notice any of these, book HVAC maintenance or an AC repair visit before the problem gets worse.

Property managers, landlords and small business owners can schedule maintenance for several units at once. We keep records for each system so you know what was checked and when. Ask us about maintenance for rooftop and packaged units on light commercial buildings.

• Family-owned and run by Andy Garza, with three generations of HVAC experience in San Antonio
• Licensed and insured, Texas license TACLB27872E
• Real checklists and written results, not a five-minute visit
• An honest, repair-first opinion with no pressure
• Upfront pricing before any repair work starts

Most summer breakdowns we see in San Antonio start as small problems that a tune-up would have caught:

• A weak capacitor that finally fails on a 100-degree afternoon
• A clogged condensate drain that overflows and stains a ceiling
• A dirty outdoor coil that makes the compressor run hot
• A frozen evaporator coil from poor airflow or a dirty filter
• Loose electrical connections that cause the unit to short cycle
• A furnace flame sensor that keeps the heat from staying on

The U.S. Department of Energy recommends regular air conditioner maintenance, including changing filters, cleaning coils and keeping condensate drains clear, because neglected equipment loses performance over time.

• Check or change your air filter every one to two months during cooling season
• Keep at least two feet of clear space around the outdoor unit
• Rinse grass clippings and leaves off the outdoor coil with a gentle hose spray
• Pour a cup of water into the condensate drain access to check that it flows
• Keep supply and return vents open and unblocked by furniture
• Call us if you hear new noises, smell burning or see water or ice

Older systems benefit the most from HVAC maintenance. A tune-up shows how much life is left, which parts are wearing out and whether a repair still makes sense. If your system is near the end of its life, we will tell you honestly and explain your options for HVAC system replacement, without pressure.

Heat pumps run in both summer and winter, so they need attention twice a year. We test the reversing valve, defrost controls and refrigerant charge in both modes. For ductless mini splits, we clean the indoor heads, filters and blower wheels, which collect dust and moisture quickly.