The Best Thermostat Installation in Las Cruces

On The GO Heating & Cooling leads Las Cruces thermostat installation, with customers calling the crew relentlessly honest and detailed.

By The Scoop Editorial Team · How we pick · Updated July 2026

Editor's Pick

On The GO Heating & Cooling

★★★★★ 4.9 · 283 reviews

Open 8 AM–5 PM daily

  • Licensed
  • Insured
  • Warranty

On The GO Heating & Cooling's thermostat feedback is dominated by one word: honest. Customers describe a company relentless in pursuing the actual solution rather than the easiest fix, with one specifically calling out the integrity of the crew as something not found frequently in this line of work. Beyond honesty, customers describe fast, reliable, and detailed service, with competitive pricing and a technician who arrived with the part already in hand. One customer mentions the crew setting up automated thermostat control as an add-on during a visit rather than treating it as a separate appointment, a convenient detail for anyone already having other HVAC work done.

"The ONLY company that was relentless in pursuit of the solution and 100% honest, was "On The Go"!"Verified review
Best for: homeowners who most want to trust the diagnosis and the quote
Call Now (575) 642-1708 Visit Website
On The GO Heating & Cooling, Thermostat Installation in Las Cruces
On The GO Heating & CoolingPhoto: Robert
TOP OF THE TOWN LAS CRUCES, NM THE SCOOP THERMOSTAT INSTALLATION
2No. 2 in Las Cruces

Aircon Heating & Cooling

★★★★★ 4.9 · 306 reviews

Open 8 AM–5 PM most days, closed Sun

  • Warranty

Aircon Heating & Cooling customers describe a full smart thermostat setup, an Ecobee installation, that delivered proper thermostatic control and lower fan noise within a couple weeks with no call-backs needed. Another customer had a thermostat replaced under warranty rather than paying out of pocket for a component still covered, and a third describes the thermostat failing during a 102-degree day and the company squeezing them in the same day rather than making them wait through the heat. Customers consistently describe honest, professional service from the very first phone call through the completed installation.

"From the very first phone call, they were professional, honest, and extremely helpful."Verified review
Best for: a smart thermostat upgrade or a warranty-covered replacement
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Aircon Heating & Cooling, Thermostat Installation in Las Cruces
Aircon Heating & CoolingPhoto: Aircon Heating & Cooling
3No. 3 in Las Cruces

Sun City Plumbing & Heating

★★★★★ 4.9 · 1597 reviews

Open 24/7

  • NATE Certified
  • Trane Comfort Specialist
  • Since 1984
  • Warranty

Sun City Plumbing & Heating customers describe thermostat installation as part of larger, well-coordinated HVAC projects, including a full system upgrade covering a new condenser, furnace, evaporative coil, and thermostat together, with the customer reporting extreme satisfaction with the install. On these larger jobs, a dedicated technician specifically installs and walks the homeowner through the new thermostat while separate specialists handle the HVAC and ductwork portions of the same visit, a division of labor that customers describe working smoothly. Customers describe the company as knowledgeable, courteous, and fair on pricing throughout.

"We have always trusted Sun City Plumbing & Heating for our plumbing issues and I can honestly say we have never had a bad experience."Verified review
Best for: a new thermostat bundled with a larger HVAC system upgrade
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Sun City Plumbing & Heating, Thermostat Installation in Las Cruces
Sun City Plumbing & HeatingPhoto: Sun City Plumbing & Heating
4No. 4 in Las Cruces

Starrett's Heating & Air Conditioning

★★★★★ 5 · 138 reviews

Open 8 AM–5 PM, closed Sun & Sat

  • Licensed
  • Insured
  • Since 1993
  • Warranty

Starrett's Heating & Air Conditioning customers describe a technician using genuine diagnostic skill to find the actual cause of a house thermostat that was not working properly, rather than simply replacing it on the spot. Long-tenure customers who have used the company for furnace maintenance over the years describe recently having two smart thermostats installed, with per-unit pricing communicated clearly for the multi-unit job. Customers consistently describe the technicians as honest, knowledgeable, and able to explain the work in terms that make sense to a non-technical homeowner.

"He is honest, knowledgeable, and explains everything perfectly."Verified review
Best for: diagnosing a thermostat that is not working properly, not just swapping it
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Starrett's Heating & Air Conditioning, Thermostat Installation in Las Cruces
Starrett's Heating & Air ConditioningPhoto: Starrett's Heating & Air Conditioning
5No. 5 in Las Cruces

Orange Air

★★★★★ 5 · 37 reviews

Open 8 AM–5 PM, closed Sun & Sat

Orange Air customers describe prompt, professional, and honest service on thermostat work, along with faster response and effective repair compared to what customers expected. One customer specifically describes upgrading to a more modern thermostat capable of circulating air on a set schedule, a meaningful step up from a basic on-off thermostat for households wanting more consistent airflow throughout the day. The thermostat-specific feedback here is limited but consistently positive on both honesty and the practical benefit of the upgrade.

"Everyone arrived on time or early and was pleasant to interact with during the entire process."Verified review
Best for: a simple, honest upgrade from a basic thermostat
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Orange Air, Thermostat Installation in Las Cruces
Orange AirPhoto: Jordyn Thatcher

How Las Cruces's Top Thermostat Installation Compare

How Las Cruces's top thermostat installation providers compare
Business Hours Known for
On The GO Heating & Cooling Top Pick 8 AM–5 PM homeowners who most want to trust the diagnosis and the quote
Aircon Heating & Cooling 8 AM–5 PM a smart thermostat upgrade or a warranty-covered replacement
Sun City Plumbing & Heating Open 24 hrs a new thermostat bundled with a larger HVAC system upgrade
Starrett's Heating & Air Conditioning 8 AM–5 PM diagnosing a thermostat that is not working properly, not just swapping it
Orange Air 8 AM–5 PM a simple, honest upgrade from a basic thermostat

What People Are Saying

★★★★★
The best I have ever dealt with, fast, reliable, dependable, knowledgeable, and honest, very detailed in ask there work thank you..
On The GO Heating & Cooling
★★★★★
The work was done with precision and care and in the 2 weeks since performance is outstanding - lower fan noise, proper thermostatic control via Ecobee, and no call-backs!
Aircon Heating & Cooling
★★★★★
They have been very hard working and very professional during the process.
Sun City Plumbing & Heating

Thermostat Installation in Las Cruces

A smart or programmable thermostat only pays off if it is installed correctly and set up to actually match how a household uses its system, which is a smaller job than a full HVAC installation but one where trust matters just as much. Las Cruces customers consistently single out honesty as the deciding factor on thermostat work, since a bad actor can easily oversell a bigger repair on what should be a straightforward swap. We read the thermostat-specific feedback across the market to find who Las Cruces residents trust with this job.

Why honesty matters more on thermostat calls than almost any other HVAC job

A thermostat is one of the least expensive components in an HVAC system, and diagnosing a thermostat problem correctly is also one of the easiest places for a dishonest technician to oversell a bigger repair, since most homeowners cannot easily verify the actual cause themselves. Customers across Las Cruces companies repeatedly emphasize honesty specifically in the context of thermostat work, more than almost any other service category, which suggests homeowners here have learned to value this trait because it is not universal.

A malfunctioning thermostat can result from a simple dead battery, a wiring issue, a failed component inside the unit, or even a problem with the HVAC system itself that only shows up as a thermostat symptom. A technician who actually diagnoses the cause, rather than defaulting to a replacement recommendation, is worth the extra conversation before agreeing to any work.

Smart thermostats and what they actually change day to day

Upgrading from a basic thermostat to a smart or programmable model changes more than convenience. Customers describe measurable improvements after a smart thermostat installation, including quieter fan operation and more precise thermostatic control that eliminated the need for follow-up service calls. Scheduled air circulation, where the system runs the fan on a set pattern rather than only when actively heating or cooling, is another upgrade customers specifically mention benefiting from.

The value of a smart thermostat depends heavily on whether it is actually set up to match how the household lives, not just mounted and left on default settings. Confirm that the installation includes configuring schedules, and if you use a smart platform like Ecobee, ask whether the technician will walk you through the app and automation features before considering the job finished.

Thermostat replacement as part of a larger HVAC project

When a thermostat is replaced as part of a larger system upgrade, a new condenser and furnace installation, for example, it is easy for the thermostat itself to feel like an afterthought handled quickly at the end of a bigger job. Customers describe companies handling this well by having a specific technician focus on the thermostat portion and walk the homeowner through its operation, even when other crew members are simultaneously finishing the HVAC and ductwork work.

If you are planning a larger HVAC project, ask specifically how the thermostat installation and walkthrough will be handled within that visit, rather than assuming it will get the same attention as the rest of the job by default. A company that names this as a distinct step in the process is generally more likely to get it right.

What to Know Before You Choose

Questions Las Cruces Locals Ask

Who is the best thermostat installation company in Las Cruces?

On The GO Heating & Cooling is our top pick for thermostat installation in Las Cruces. Customers consistently emphasize honesty and integrity on this specific service, along with fast, detailed work and competitive pricing. Aircon Heating & Cooling is a strong runner-up, particularly for smart thermostat upgrades and warranty-covered replacements.

How much does a smart thermostat installation typically involve?

Beyond mounting the device, a proper installation includes wiring compatibility checks, connecting the thermostat to your specific HVAC system correctly, and configuring scheduling or app-based automation. Customers describe the biggest satisfaction gains coming from installations that included this full setup, not just the physical mounting.

Can a thermostat be replaced under warranty in Las Cruces?

If the thermostat is still within its manufacturer warranty period, some companies will handle the replacement under that coverage rather than charging full price. It is worth asking directly whether your unit qualifies before assuming a full-price replacement is necessary.

Should a broken thermostat always be replaced, or can it be repaired?

Not always. Customers describe technicians successfully diagnosing the actual cause of a thermostat that was not working properly, which sometimes points to a wiring or system issue rather than a failed thermostat itself. A good technician investigates before recommending replacement.

Can thermostat installation be added onto an existing HVAC service appointment?

Often, yes. Customers describe Las Cruces companies setting up thermostat installations, including automation setup, as an add-on during a visit scheduled for other HVAC work, which saves the cost and time of a separate appointment.

What does a modern thermostat add over a basic on-off model?

A modern thermostat can circulate air on a set schedule rather than only running when actively heating or cooling, which improves consistency throughout the day. Smart models add remote scheduling and can improve overall system performance, including quieter operation in some cases.

Still deciding? You can't miss with On The GO Heating & Cooling, our top pick. Call On The GO Heating & Cooling
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