When Jennifer moved into her 2006 home in Hurricane, her summer energy bills felt high but she assumed that was just the cost of living in Southern Utah. Air conditioning bills over $350 per month in July and August seemed normal to her neighbors. It wasn't until she scheduled a professional home energy audit that she discovered her home had three fixable problems costing her more than $800 per year.
This is her story — and what every Southern Utah homeowner can learn from it.
What the Blower Door Test Revealed
A blower door test depressurizes the home and measures how much outside air leaks in. Jennifer's home tested at over three times the recommended air leakage rate for a home her size — meaning her AC was fighting a constant battle against hot outside air flooding in through gaps she couldn't see.
Using a thermal camera during the blower door test, our technician identified the three main culprits:
- Attic hatch without insulation or weatherstripping: The pull-down attic stairs were an uninsulated hole in the ceiling, allowing 160°F attic air to pour directly into the home during summer. This single issue accounted for roughly a third of her excess cooling load.
- Missing insulation above the garage: The room above the attached garage — a guest bedroom — had no insulation in the floor. Summer heat from the 150°F garage ceiling transferred directly into that room, requiring the AC to fight the heat conducted from below as well as above.
- Recessed light fixtures without air sealing: Throughout the home, older recessed "can" lights penetrated the ceiling with no air barrier around them — effectively creating a series of direct conduits between the living space and the attic.
What the Duct Blaster Test Found
The duct blaster test measures leakage in the HVAC duct system. Jennifer's ducts were losing approximately 22% of conditioned air into the attic — meaning for every dollar she spent cooling her home, 22 cents was literally going into the attic and out through the roof vents instead of into her living rooms.
This was the second largest source of waste: the AC system was doing real work, but more than one in five dollars of that work wasn't reaching her living spaces.
The Fixes — and the Savings
After the audit identified the problems, Jennifer had three things fixed over the following month:
- Insulated attic hatch cover installed (pull-down stair cover with R-38 insulation): $280
- Spray foam air sealing of all recessed light fixtures from the attic side, plus blown-in insulation increase to R-49: $1,100
- R-19 insulation added between garage ceiling joists (under the guest bedroom): $600
- Professional duct sealing with mastic at all accessible joints: $350
Total investment: approximately $2,330.
The following summer, her July energy bill dropped from $368 to $241 — a $127 monthly reduction during peak months. Over the entire year (including winter heating savings from better attic insulation), she saved $847 in her first year. Her payback period: about 2.7 years. Every year after that, the savings are pure return on investment.
The Lesson for Southern Utah Homeowners
Energy waste in Southern Utah homes often hides in plain sight — or rather, where you can't see it. Attic bypasses, duct leaks, and insulation gaps don't announce themselves. You only feel them in your energy bill.
A professional energy audit with blower door and duct blaster testing typically costs $200–$400 and delivers an itemized map of your home's energy losses ranked by impact. For most homeowners, the audit pays for itself within a single cooling season from the improvements it identifies.
Ready to find out what your home is costing you? Learn about our energy testing services or schedule an audit with High Desert Garage Door & More. We serve Hurricane, St. George, and all of Southern Utah. 📞 (435) 680-2859
Need help with garage door repair, HVAC, or energy testing in Southern Utah? Call (435) 680-2859 — same-day service available.
