When a home in Las Vegas starts to feel warm even though the AC is running, it usually means something inside the system is not working the way it should. Our team at
Fast Affordable Air inspected and repaired a rooftop York package unit that was having Cooling problems. A rooftop package unit is a type of
central Air Conditioner that keeps all of its Heating and Cooling parts inside one metal cabinet on the roof. These units save space and are common in Las Vegas and Clark County.
What We Saw When We Arrived
The York system was clearly working hard. The outdoor coils were covered in dust from the desert wind. Dirty coils make it harder for the AC to release heat, which causes warm air inside the home.
We also inspected the blower section inside the unit. The blower is the big fan that moves cool air through the duct system. The blower wheel was spinning but was loading up with dust. When blower wheels collect dirt,
they lose power and airflow drops.
We also inspected the duct opening under the unit. The duct is the tunnel that carries cooled air into the home. This duct had dust buildup around the edges, which means air leakage. Air leaks make the AC less efficient and cause the system to cool the attic instead of the rooms.
Step 1: Full System Cleaning
We cleaned the outdoor coils on all sides of the York package unit. This helps the Air Conditioner breathe again. Clean coils make a big difference in how fast the system cools the home and how much energy it uses.
The U.S. Department of Energy explains that dirty coils can increase energy use by over 30 percent.
We also cleaned the blower wheel. When dust sticks to a blower wheel, the wheel becomes unbalanced. This can wear out the motor and cause shaking noises. A clean blower moves air more smoothly and helps the system work like it should.
Step 2: Inspecting Electrical Components
Next, we checked the electrical parts inside the AC. Rooftop units often sit in direct sunlight, rain, and desert dust, which can weaken wires and connectors. We inspected the contactor, capacitor, and the motor wiring.
A capacitor is a small cylinder that helps the fan motors start and stay running. If a capacitor goes weak, the AC becomes noisy or won’t cool at all.
The wiring on this older York unit needed tightening. Loose wires can cause overheating. By correcting this, we prevented future breakdowns.
Step 3: Refrigerant Line and Coils
The unit uses R-410A refrigerant, which moves heat from inside the home to the outside. We inspected the service ports and the copper lines. There was no visible refrigerant leak, but the dirt on the coil fins showed
restricted airflow. Cleaning the coil helps the refrigerant cycle work properly again.
Step 4: Duct and Roof Curb Inspection
The roof curb, which is the base the package unit sits on, had cracks in the sealant. Cracked sealant causes air leaks and allows hot attic air to mix with cool air. We resealed the curb area to improve efficiency.
You can learn more about duct sealing on our
Air Duct Repair page.
How These Repairs Help the Home
After the blower wheel was cleaned, the Air Conditioning system pushed more air through the ducts. The home cooled faster and the air felt stronger from the vents.
After the coil cleaning, the AC used less energy to produce the same amount of Cooling. This can lower utility bills, especially during Las Vegas summers when temperatures rise above 110 degrees.
The improved duct seal and fixed curb gaps keep cool air inside the living space where it belongs. This boosts efficiency and helps the system last longer.
We also explained maintenance tips to the homeowner. Regular coil cleaning and yearly checkups keep the central AC running longer. More information is available on the
Fast Affordable Air Maintenance Plan page.
