Heating & Cooling System Troubleshooting Service Las Cruces
Hi, I’m Gustavo — owner of A to Z Plumbing Heating and Cooling here in Las Cruces. If your heater’s acting up, your AC keeps shutting off, or something just doesn’t feel right with your home’s air, we can help. My team and I have been fixing HVAC problems all across Las Cruces for years, and we always treat your system like we’re working on our own home.
Emergency Call - 24/7
That Time My Friend’s AC Nearly Broke Her Birthday Cake
So, last summer, my friend Anna was baking cupcakes in her East Mesa kitchen. The AC suddenly shut off right when the oven was on full blast. Next minute, her whole house was sticky and hot. Cupcakes? Melted into sad blobs.
She called her usual HVAC guy. He said it was the breaker and left. Next day, same thing. House stayed hot. Cakes gone. She texted me in a panic.
I went over. I found the real issue: her thermostat wire was shorting with a broken duct clamp in the attic. Took me 30 minutes to spot it. I fixed it, reset the breaker—and bingo—AC worked again. She got a refund from the other guy and invited me for cupcakes after.
Troubleshooting heating and cooling systems isn’t about guessing. It’s finding the hidden oopses and fixing them fast.
What Is Heating & Cooling Troubleshooting?
It’s like detective work for your HVAC system.
We don’t just replace parts. We figure out:
Why the AC cycles on and off weird
Why that one room stays hot
Why your furnace smells burning
Why the electric bill doubled
Then we fix that. Not guess, not patch.
Why Homes in Las Cruces Are Weird With HVAC
Las Cruces heat and dust bring unique problems:
| Problem | Common Cause |
|---|---|
| AC shuts off midday | Dirty coils from desert dust |
| Heater smells funny | Gas line or flame sensor issue |
| One room cold, others hot | Bad duct balance or broken dampers |
| AC runs non-stop | Wrong thermostat wiring |
We deal with this stuff from Mesilla to Sonoma Ranch every week.
How We Troubleshoot—Step by Step
We start by talking. You tell us what’s off. Is it hot room, strange sound, bill spike?
We check thermostat. Wrong wire or bad batteries can mess everything up.
We test electrical. We inspect breakers, fuses, capacitors.
We check filters and coils. If they’re clogged, airflow’s bad.
We look at ducts. Leaks and holes mess with airflow big time.
We test heat or refrigerant. Low gas, broken flame sensors, low Freon—all on the list.
We give you a clear report. We show you what’s wrong, why it’s wrong, and how to fix it.
24/7 Emergency heating and cooling services
📞 Call or text A to Z Plumbing Heating and Cooling LLC
🕒 Same-day appointments available
🌙 Emergency Heating and Cooling Service 24/7
EXCELLENT Based on 16 reviews Posted on Brad BranfieldTrustindex verifies that the original source of the review is Google. A to Z Plumbing repaired my leaking tankless water heater. Charles contacted the manufacturer, patiently answered all of their questions, and obtained parts under warranty. Another plumbing company in town didn't want to bother with the warranty. Charles was great during the diagnosis and repair process. I recommend A to Z Plumbing!Posted on Maria CounsmanTrustindex verifies that the original source of the review is Google. Gustavo and company have been nothing short of exceptional. We called one day. They showed up the next. Our AC unit needed to be replaced. Works perfectly. They offered us a great deal that we were very pleased about. We only suffered through warm temps for a few hours. Thank you is never enough.Posted on David FerralesTrustindex verifies that the original source of the review is Google. I can't say enough about the service I received!!! I had a plumbing emergency. I contacted Gustavo after being recommended to him. We spoke, set up a time and he came out and he was able to find the problem very quickly. He showed & explained the cause of the issue and I'm very appreciative of him and son. I would recommend A to Z to anyone wanting an excellent plumber. I will be using them in the future. Thank you!!!!Posted on Carlos MartosTrustindex verifies that the original source of the review is Google. A through Z plumbing replaced two bathtub faucets that were very difficult to access. They took their time and did a fantastic job. They also replaced my pressure regulator. After the job, they were very thorough to make sure that the job was done right and that there were no leaks or any other issues present. I would highly recommend their services!Posted on Michelle RodriguezTrustindex verifies that the original source of the review is Google. I HIGHLY recommend these guys. They came out within 10 min after my call. I ran into an issue with a shower install and they fixed the problem immediately They are my go to plumber from now on. Thanks again guys!!!!Posted on Lee HomesteadTrustindex verifies that the original source of the review is Google. Spoke with Gustavo. Excellent communication and helped me stop a leak issue with my water heater. I am ecstatic to have found a knowledgeable Plummer who is now going to be my ‘go to’ Plummer for anything that arises. Thank you A to Z plumbing!Posted on Diego GamboaTrustindex verifies that the original source of the review is Google. They fixed all the plumbing in my house and installed 3 units in the airbnbs that I have, amazing work. On time ! Gustavo is amazing and very professional, they know what they are doing. Highly recommended ! Very satisfied with the work they did. Very happy with Ivan, joel and abraham amazing work.Posted on Louise SmithTrustindex verifies that the original source of the review is Google. Very friendly. Courteous. Fix my problem in less than an hour. Show me what was wrong. This is the second time I've call them with plumbing problems. The last time was about a year ago. I will always call this company. Very reliable. I would recommend them to all my friends that have plumbing or cooling problems.Posted on Sylvia CarrenoTrustindex verifies that the original source of the review is Google. If you're looking for a good plumber, this is the company to call. I highly recommend. Louie and Joel were very professional, efficient, friendly, and did a great job fixing my shower issue. Thank you both for your awesome service.Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Real Stories From Las Cruces Homes
The Solano House That Forgot a Filter
A landlord near Solano called us after tenants complained about poor airflow. We found a filter that looked like dirty pizza cheese. We replaced it, cleaned coils, and airflow shot up. HVAC ran 20% more efficiently. Tenants happy. Landlord happier.
The Doctor’s Office on Telshor
A clinic’s AC would blow warm air sometimes. We found their thermostat was installed under a vent—too hot to read correctly. We moved it, balanced ductwork, and reset the thermostat. Office cool again, patients stopped sweating in the lobby.
Troubleshooting Common Las Cruces HVAC Problems
AC turns on then off → Usually clogged coils or dirty filters
Some rooms don’t cool → Airflow imbalance or closed vents
Heater smells like rotten eggs → Gas leak or pilot light issue
AC makes loud click sound → Bad relay or failing capacitor
Electric bill spiked → System running harder than needed
If you’re ignoring it, you’re paying more each month. We catch things before they break.
Why We’re Different
Local people—we work here, breathe this heat, know our systems
No fake fixes. We don’t sell you parts to make money
No tech talk. No jargon or nonsense about PSI or AFUE
Leave it clean. We bring mats, sweep footprints, don’t leave grime
Follow-up. We check in a week later—just to make sure things still work






Serving Las Cruces & Nearby Areas
We’re located in Las Cruces, 88005, and we serve all surrounding communities, including:
Mesilla
Sonoma Ranch
Picacho Hills
Alameda-Depot
University Park
Doña Ana
Fairacres
Vado
Mesquite
Radium Springs
If your home is within 40–60 miles of Las Cruces, we’ve probably worked near you.
Heat, Cool, Repeat—Year-Round Care
Summer (June–Sept)
Clean coils regularly
Check refrigerant levels
Inspect outdoor unit for dust build-up
Winter (Nov–Feb)
Inspect gas lines and pilot lights
Check for cracks in heat exchanger
Clean flame sensor and gas burners
Shoulder Seasons (spring/fall)
Balance airflow
Test blower motor
Sync thermostat for heating and cooling
How Much Does Troubleshooting Cost?
Most jobs range $99–$150 for the visit and diagnostics.
Then we tell you the problem and cost to fix. No surprise fees.
A thermostat wire issue might be $40. A capacitor replacement—$120. A duct leak repair—$150. Usually, we catch problems cheap before they blow to $1,000 bills.
When to Call vs. DIY
Try this first:
Change your filter
Check circuit breaker
Replace thermostat batteries
Call us if:
AC turns on and off fast
House freezes or roasts
Strange smells, gas, or noises
Electric bill shot up for no reason
If you’re not sure: call. HVAC issues don’t fix themselves, and waiting can get expensive fast.
Who We Work For
Homeowners across Las Cruces, Mesilla, Telshor, Sonoma Ranch
Renters who can call on landlord approval
Small offices like clinics, shops, and salons
Property managers needing fast tenant fixes
We cover the whole city—no long holds, no waiting days.
Testimonials From Real Neighbors
“They found why my AC cut out every afternoon—dirt clogging the coil. Fixed it quick and cheap!” — Beth, East Mesa
“Our heat smelled off. They fixed a gas sensor and now it’s safe and warm. I trust them.” — Jorge, Alameda
⭐ What Customers Are Saying
📞 Call or text A to Z Plumbing Heating and Cooling LLC
🕒 Same-day appointments available
🌙 Emergency Heating and Cooling Service 24/7
Common Heating and cooling Questions (Real Ones from Las Cruces Folks)
Q: Can you fix my AC if it just won’t cool?
A: Probably. We test refrigerant and coils first before any big fixes.
Q: My heat smells bad—is it safe?
A: Not always. Gas smells mean stop and call us.
Q: Why is my bill so high?
A: Most often it’s dirty parts or broken controls making system work too hard.
Q: Can I wait till next month?
A: You can, but small problems turn into big bills fast around here.
Quick Service On Emergency Call - 24/7
Call now to hire our Heating and Cooling Troubleshoot expert to fix your drainage problem in Las Cruces & nearby areas
