When it comes to staying cool in Las Vegas, Henderson, and North Las Vegas, your air conditioning system isn’t the only factor that matters. The insulation in your attic plays a major role in how well your central air conditioner performs. Recently, Fast Affordable Air completed a project that highlights just how much proper attic insulation can help improve indoor comfort and reduce energy bills.
Project Overview
During a service call, our technicians were called out to inspect a customer’s attic due to high energy bills and poor cooling performance. Upon entry, we found that while the ductwork was intact and the HVAC system was functioning, the attic insulation was uneven and low in key areas, particularly around air ducts and joist lines.
Identifying the Problem
In the first photo, you can see black flex ductwork snaking across the attic floor. While the ducts were sealed and insulated, the surrounding blown-in fiberglass insulation had settled over time. We also found exposed framing and visible gaps near wiring and plumbing penetrations — these create paths for heat gain from the attic into the living space below.
Using a depth ruler, we measured the existing insulation thickness. It was about 8 to 10 inches in many areas, which translates to roughly R-30. For Southern Nevada’s desert climate, the U.S. Department of Energy recommends R-38 to R-60 in attic spaces (source).
What We Did
Our team at Fast Affordable Air added high-performance loose-fill fiberglass insulation to bring the total depth up to 16 inches, achieving an R-60 rating. This upgrade is especially important in homes with HVAC ductwork running through the attic, as it helps keep the cool air inside the ducts and prevents the attic heat from sneaking into your home.
The second and third images show the results after the insulation was leveled and increased to the appropriate depth. Notice how the new material fully surrounds the truss framing and duct lines. We also made sure to preserve airflow by keeping soffit vents clear and avoiding blockage around plumbing and electrical penetrations.
Why This Matters
- Lower Energy Bills: With thicker attic insulation, the AC system doesn’t have to run as often or as long to keep the house cool.
- Better Indoor Comfort: The house stays cooler during the hottest parts of the day, with fewer hot spots or uneven temperatures.
- Less Stress on Equipment: Reducing thermal load helps prolong the life of your HVAC system, cutting down on repairs and replacements.
- Improved Air Quality: Sealing gaps around ductwork and plumbing helps keep attic dust and allergens out of the living space.
Our Ongoing Mission
Fast Affordable Air is committed to delivering complete comfort solutions — not just quick AC repairs. By focusing on both the equipment and the home’s insulation and airflow, we’re able to offer longer-term savings and comfort to families in Clark County. To see more of our work or learn about our attic insulation and energy-saving services, visit our Air Conditioning Repair page or explore our Indoor Air Quality section.
