Aerial view of a gray outdoor air conditioning condenser unit mounted on a concrete pad next to a house with vinyl siding.

AC Maintenance in Las Cruces, NM

Air conditioners here run from May through September, so April is the time for a tune-up. Tell us about your system, and a licensed contractor who covers Doña Ana County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
An overhead view of a residential air conditioning condenser unit mounted on a concrete pad next to a house with vinyl siding.

Five months of hard running in the heat

Your air conditioner works May through September here, and on a 94°F afternoon it doesn't get much of a break. The compressor runs long stretches just to hold the house at temperature, and it does that day after day for five months straight.

Doña Ana County also sees real storms. Ten years of records show 47 hail events and 83 damaging wind events. Hail can dent the condenser fins that let the unit shed heat, and wind can bend the cabinet or throw debris into it. A tune-up checks the coil and fins for damage, confirms the refrigerant charge, and makes sure the unit is still moving air the way it should before the next 94°F day asks everything of it.

5 months
May through September, your air conditioner is on duty
94°F
the average summer afternoon it cools against
47 hail events
in ten years, and hail bends the fins on outdoor coils
83 wind events
in ten years, and wind drives debris into outdoor units
Isometric cutaway illustration of a house showing interior ductwork, an air handler and furnace unit, and an outdoor condenser connected by lines outside the wall.
Your air conditioner works hardest from June through September.

NOAA nClimDiv, 1991–2020 normals

An outdoor air conditioning condenser unit on a concrete pad next to the gray vinyl siding of a residential home.

Book your AC tune-up in April, before homes here start needing cooling in May.

  1. Jan
  2. Feb
  3. Mar
  4. Apr
  5. May
  6. Jun
  7. Jul
  8. Aug
  9. Sep
  10. Oct
  11. Nov
  12. Dec

A tune-up checks the refrigerant charge, cleans the coils, tests the capacitor and tightens the electrical connections.

New Mexico requires HVAC contractors to hold a state license.

The Construction Industries Division tests and licenses HVAC contractors in New Mexico, and the license belongs to the contractor, not to any one job. That means the state has already checked this contractor's qualifications before they ever set foot in your home, and there's a record of who they are.

For a maintenance visit on your air conditioner, that license is what stands behind the work. If the technician opens the refrigerant side of the system, checking the charge or working on the coil, they also need EPA Section 608 certification, which is the federal rule for anyone handling refrigerant, in every state. That certification is separate from the New Mexico license and covers the refrigerant work specifically.

Source: New Mexico Regulation and Licensing Department

What does AC maintenance include?
A technician checks refrigerant pressure, cleans the condenser coil outside, and tests the capacitor and contactor that get the compressor running. They check the coolant lines for wear, clear the condensate drain so it isn't clogged, and check that the thermostat is calling for cool correctly. Anyone who opens the refrigerant side needs an EPA Section 608 certification, so that part of the job always goes to a certified tech.
How often does an air conditioner need maintenance?
Once a year, before the season it works hardest. Here that means getting it checked before May, since the system runs from May through September with summer afternoons averaging 94 degrees. A yearly check catches a weak capacitor or a dirty coil before it has to work through months of that heat.
Is AC maintenance worth it?
Yes, because most of what fails on an air conditioner shows warning signs before it quits outright. A weak capacitor, a low refrigerant charge, a coil caked with dust all show up on a maintenance check, and catching them before a 94 degree afternoon means the system doesn't have to run a five-month season on a fault. A New Mexico licensed contractor can do this kind of check, and if refrigerant needs to be added or recovered, that part requires an EPA certified technician.