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AC and Furnace Repair in Southern Highlands, Las Vegas
Last updated: November 4, 2026 · Published by Colton Air Conditioning, NV license 0092120
Colton Air Conditioning (Colton Mechanical LLC, Nevada license 0092120) does AC and heating repair in Southern Highlands (89141), Las Vegas. Call (702) 738-6976 or book online. Open 24 hours, 7 days.
HVAC repair for larger, multi-system Southern Highlands houses: side-yard condensers, long line sets, and original air conditioners and furnaces that are aging out.
ZIP 89141
It is southwest Las Vegas, mostly ZIP 89141, from the parkway up toward the golf course and the mountain backdrop. The houses are bigger than a typical valley tract home, often two stories with two or three systems, tile roofs, and condensers parked in side yards that do not move much air.
Original air conditioners are now old enough to fail every summer, and plenty are still on equipment that is no longer worth recharging. A dead upstairs system is not a reason to replace the downstairs one that is still running.
Neighbors to the west in Enterprise have a lot of 2000s and 2010s equipment too.
AC repair in Southern Highlands
Short answer: Southern Highlands is in unincorporated Enterprise, Clark County, mostly ZIP 89141. Many homes are two-story with more than one system. When one floor won't cool, that floor's system gets its own diagnosis before anyone talks about replacing anything. Book online or call (702) 738-6976 to schedule.
If your home has one AC with zone dampers instead, see one zone not cooling.
Checks before you call
- Outdoor unit: breaker on. If the breaker trips again after one reset, leave it off. See AC tripping breaker.
- Indoor drain: if water is near the air handler, see AC leaking water.
Side-yard condensers
Condensers here often sit in narrow side yards between block walls. A condenser needs clear airflow around its coil, so keep plants and stored items back from it. Dust packs into the coil faster when air can't move. See dirty AC coil.
Common parts failures: capacitor, contactor, and fan motor. Running but not cooling? See AC running, not cooling. For the full process, see AC repair in Las Vegas. For uneven floors, see two-story temperature balance.
Need AC help in Southern Highlands? Call (702) 738-6976 to schedule.
Book online or call (702) 738-6976 to schedule.
AC replacement in Southern Highlands
Replacing equipment in this community is a house-by-house job. Square footage on the listing is not a tonnage. Bonus rooms, west glass, and a system that only serves the second floor change the load. We match the indoor and outdoor equipment for the zone that failed.
Golf-course and custom lots often have long line sets. We plan placement before anything is ordered. Financing is available through the lenders we work with if you want the cost spread out. You do not have to decide at the kitchen table.
Furnace repair in Southern Highlands
Short answer: The USGS puts Southern Highlands at about 2,390 to 2,510 feet, a few hundred feet above the Harry Reid airport weather station (about 2,100 feet). Gas furnaces above 2,000 feet must be derated for altitude, so a furnace that runs poorly here needs its setup checked, not just its parts. Book online or call (702) 738-6976 to schedule.
If you smell gas, leave the house right away. Don't use light switches, thermostats, appliance controls or anything that could spark. Once you're outside, call 911 and Southwest Gas (877-860-6020). Don't flip switches or try to relight anything.
Why elevation matters
The fuel gas code (NFPA 54) says gas appliance input ratings apply up to 2,000 feet. Above that, input is reduced by 4% per 1,000 feet, or per the manufacturer's instructions. On a Southern Highlands service call we check the gas pressure and orifice setup against the manufacturer's altitude instructions, not just whether the burners light. NOAA publishes Las Vegas climate normals at the airport only. Its January average low is 40.5°F. There's no official figure for Southern Highlands itself.
Two systems, two diagnoses
An attic furnace needs a clear passageway, a light and a service receptacle (IRC M1305.1.3). If yours doesn't have them, tell us before the visit. A closet furnace needs combustion air, so keep the closet clear.
Checks before you call
- Furnace switch on, blower door seated.
- Breaker reset once. If it trips again, leave it off.
If the burners light and then quit, see furnace flame sensor. If it starts and stops, see furnace short cycling. If the air from the vents is cool, see heater blowing cold air. If you have a heat pump, see heat pump not heating.
Because Southern Highlands is unincorporated, a permit for a furnace replacement goes through Clark County, not the City of Las Vegas. For the full furnace process, see furnace repair in Las Vegas and heating repair. For neighbors to the west, see Enterprise. Our office is in 89148.
If the furnace still won't heat after these checks: Book online or call (702) 738-6976 to schedule.
We do heat pump repair in Southern Highlands too: defrost problems, reversing valves, outdoor units that won't start and backup heat. See heat pump repair and heat pump not heating.
Southern Highlands streets and sections we work in
We work across Southern Highlands in ZIP 89141, from the homes along Southern Highlands Parkway and St. Rose Parkway up to the golf club custom lots on the hillside. The production neighborhoods and the guard-gated custom sections have different problems, so we ask which one you are in before we show up.
- Production two-story plans: usually two systems. The upstairs unit runs out first in July.
- Custom and golf-course lots: three systems and longer line sets.
- Townhomes and smaller plans near the parkway: a single system, often in a tight side yard or on a small pad.
Fall Heating Check in Southern Highlands
Cold nights come fast once October ends. A fall heating check covers ignition, the flame sensor, the blower, the filter and the thermostat on gas furnaces, plus defrost and auxiliary heat on heat pumps, so the first cold night isn't the first time the system runs. See heating maintenance for what we check.
See Comfort Club plans, or see what a visit covers on our AC maintenance in Las Vegas page.
Recent work in Southern Highlands
- Zoned system controller replacement, ZIP 89141, August 2026.
- Dual run capacitor replacement, ZIP 89141, June 2026.
- Gas/electric split system installed with a new electrical disconnect and condensate drain trap, ZIP 89141, April 2026.
- Furnace control board and single run capacitor replacement, ZIP 89141, April 2026.
- Compressor replacement, ZIP 89141, March 2026.
- Condensate drain re-pipe, ZIP 89141, February 2026.
Services in Southern Highlands
FAQ — Southern Highlands
Do you come to Southern Highlands?
Yes. We do air conditioner repair in Southern Highlands, along with furnace and HVAC repair, across ZIP 89141. Book online or call (702) 738-6976 to schedule.
Only my upstairs system quit. Do I have to replace both?
No. Each system is diagnosed on its own. A working downstairs unit is not part of the conversation unless you want it to be.
Are you licensed?
Yes. Nevada contractor license 0092120.
Upstairs is warm but downstairs is cold this winter. Is a furnace failing?
Not always. Warm air rises, so in many two-story homes the downstairs system has to work harder in winter. We check the downstairs thermostat, filter, and furnace first. If that furnace lights and then shuts off, or blows cool air, it needs a repair. If it runs normally and the room still lags, the cause is usually airflow. See heater not working for checks you can do first.
Can you check both furnaces on the same visit?
Yes. Tell us how many systems the house has when you book, and we will plan enough time to look at each one. Each system gets its own diagnosis, so a problem with one does not get blamed on the other.
I live in a guard-gated section. What do you need from me?
Add Colton Air Conditioning to your gate list for the appointment day, or tell us the gate procedure when you book. If the equipment is behind a locked side-yard gate, let us know where the outdoor unit is.
Who handles permits for a furnace replacement in Southern Highlands?
Southern Highlands is part of unincorporated Enterprise, so any permit a furnace replacement needs goes through Clark County, not the City of Las Vegas. We tell you up front whether a permit applies.
Do you repair both furnaces and air conditioners in Southern Highlands?
Yes. Colton Air Conditioning repairs gas furnaces, heat pumps and central AC in Southern Highlands (89141), with a diagnosis before any replacement talk. Book online or call (702) 738-6976 to schedule.
Is Southern Highlands in the City of Las Vegas?
No. It's in unincorporated Enterprise, Clark County. It uses a Las Vegas mailing address, mostly ZIP 89141, and permits go through Clark County.
Does elevation affect my gas furnace in Southern Highlands?
Yes. Most of the area is about 2,400 to 2,500 feet up. The fuel gas code reduces gas appliance input above 2,000 feet, by 4% per 1,000 feet or per the manufacturer's instructions.
My upstairs is hot but downstairs is fine. What's wrong?
Many homes here have a separate system for each floor. Usually only one has failed. Call (702) 738-6976 to schedule.
What should I do if I smell gas?
Leave the house right away. Don't use light switches, thermostats, appliance controls or anything that could spark. Once you're outside, call 911 and Southwest Gas (877-860-6020). Don't flip switches or try to relight anything.
Is Colton open around the clock in Southern Highlands?
Yes. Colton Air Conditioning is open 24 hours, 7 days for AC and furnace repair in Southern Highlands (89141). Book online or call (702) 738-6976 to schedule.
Do you do heat pump repair in Southern Highlands?
Yes. Colton Air Conditioning repairs heat pumps across Southern Highlands and ZIP 89141, and we're open 24 hours, 7 days. Book online or call (702) 738-6976 to schedule.
Nearby areas we serve
Inspirada, Anthem, Las Vegas, Enterprise, Mountains Edge, Silverado Ranch, and Spring Valley.
Recent work
Summer in the Southern Highlands area brought a run of small, specific fixes. In June we replaced a dual run capacitor at one home and a motor starter at another. In August we replaced a multi-zone controller on a zoned system. Each one was a single-part repair, and no system was replaced at any of those homes.
This spring brought two bigger jobs in the Southern Highlands area. In March we replaced the compressor on one home's air conditioner. In April we replaced two gas/electric split systems at another home with new Goodman equipment. Different homes, different answers: one needed a single major part, and the other got all-new equipment.
Heating season brings its own calls in the Southern Highlands area. In January we inspected a furnace for one homeowner. In February we re-piped a condensate drain line at another home, and in April we replaced a furnace control board. The drain line and the control board were both repairs, with no equipment replaced.
Common HVAC Problems in Southern Highlands Homes
The usual pattern is an upstairs system that falls behind, a side-yard condenser packed with dust, or original equipment from the late 1990s and 2000s that fails in July. A dead upstairs unit is not a reason to replace a downstairs system that is still running.
Repair, Replacement, or a Second Opinion?
A minor part stays a repair. Replacement comes up when useful life, refrigerant, repair cost, and a major failure say the equipment is finished. If another company already wrote a replacement quote, a second look is a fair ask.
Before you call
One system is down and the other is still running. Do both get replaced?
Not automatically. We diagnose the system that failed. If the other one is keeping up and the heat exchanger or compressor is sound, we leave it alone and price only the side that is done.
The house still has the original air conditioner. Is replacement the only option?
Age is one factor. It still is not, by itself, a replacement. We separate minor repairs from major ones and look at refrigerant, repair cost, and whether the system has been a repeat problem.
Heating and cooling in Southern Highlands
AC repair in Southern Highlands
Diagnosis first. A minor part stays a repair.
AC replacement in Southern Highlands
Matched indoor and outdoor equipment, sized to ACCA standards.
Heat pumps in Southern Highlands
Cooling and heating on the same system.
Furnace repair in Southern Highlands
No heat, a flame that drops out, or a furnace that sat idle all summer.
HVAC second opinion
Another company already quoted a full system. We will look first.
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Local HVAC Service for Southern Highlands Homes
Colton Air Conditioning serves Southern Highlands with AC repair, replacement, heat pump, furnace, and multi-system HVAC help. We diagnose the system before recommending the next step.
Nevada contractor license 0092120.