Helping a Homeowner Cut Energy Costs by Over 75%
Case Study: Massive Energy Savings from Right-Sizing, Heat Pump Conversion, and Insulation Upgrade
Background
When Mendy purchased his home in Carrollton, TX, it was equipped with two oversized air conditioning systems — a 4-ton and a 3-ton unit — providing a total of 7 tons of cooling for only 1,800 sq. ft. This was significantly over-sized, causing short cycling, poor humidity control, and high electrical demand.
The home also had no gas service, meaning heating relied entirely on electric resistance strips within the air handler — one of the most expensive heating methods available. During colder Dallas winters, this resulted in electric bills exceeding $900 per month.
Assessment and Plan
After evaluating the home’s load requirements and insulation levels, Mendy identified three major improvement opportunities:
- Right-size the HVAC system to match the home’s actual heating and cooling load.
- Switch to a high-efficiency heat pump system.
- Upgrade attic insulation to improve the home’s energy envelope.
Upgrades Performed
- System Replacement & Right-Sizing: Removed both existing units (4-ton + 3-ton) and replaced them with a single 4-ton high-efficiency heat pump, properly matched to the home’s square footage. Learn more about heat pump conversions.
- Attic Insulation Upgrade: Installed new blown-in attic insulation to bring the R-value up to approximately R-38, addressing old insulation that was compressed and missing.
- Solar Integration: Later, Mendy installed rooftop solar panels to offset total electric consumption and further stabilize utility costs.
Results
- Electric bills reduced from $900/month to about $200/month.
- Improved comfort and humidity control.
- Reduced equipment wear and noise.
- Lower environmental footprint due to energy efficiency and solar contribution.
If you’re considering similar improvements, explore our financing options or maintenance plans to maximize long-term savings.
Quote from Mendy
“As a service technician, I knew the systems were oversized, but seeing the results firsthand was incredible. Between right-sizing the unit, upgrading insulation, and adding solar, my energy costs dropped by more than two-thirds.”
Summary
This project demonstrates how proper system sizing, mechanical efficiency, and building envelope improvements work together to deliver major energy savings. For homeowners in the Dallas area, combining a heat pump upgrade, insulation improvements, and solar integration can dramatically reduce energy bills while increasing comfort.
Learn more about Tiger Air & Heating and how our team delivers lasting efficiency upgrades across the Dallas–Fort Worth area.