Energy Savings Guide 2026
Texas summers push electric bills into the stratosphere. These 7 proven home improvements can slash your cooling costs 20–40% — and make your home dramatically more comfortable.
The average Houston-area home spends $2,400–$3,600 per year on electricity, with 60–70% of that going to air conditioning. A poorly insulated, leaky home in Montgomery County can see July–August electric bills of $400–$600+.
The good news: Most Texas homes — especially those built before 2010 — have enormous room for improvement. Even homes built to code often have R-19 attic insulation when R-38 to R-49 is ideal for our climate zone.
Cost: $200–$500 | Annual savings: $240–$540 | Payback: 6–12 months
This is the cheapest, fastest improvement with the quickest payback. Seal gaps around: can lights (use IC-rated covers), attic hatches (weatherstrip + insulation board), plumbing vents, electrical penetrations, and ductwork joints. A tube of caulk, a can of spray foam, and an afternoon can save you $20–$45/month.
Cost: $1,500–$3,500 | Annual savings: $360–$900 | Payback: 2–4 years
Most Texas homes have R-19 (6 inches) when they need R-38 to R-49 (12–16 inches). Blown-in fiberglass is the most cost-effective option. Blown-in cellulose offers slightly better performance but costs more. For a 2,500 sq ft home, upgrading from R-19 to R-49 typically costs $2,000–$3,000 and saves $50–$85/month during summer.
Pro tip: Your attic access door or pull-down stairs are often completely uninsulated. Adding an insulated cover here costs $50–$100 and can make a noticeable difference.
Cost: $800–$2,000 | Annual savings: $120–$360 | Payback: 3–5 years
In Houston, an uninsulated attic can hit 140°F+ in August. A radiant barrier — aluminum foil laminate installed on roof rafters — reflects radiant heat back out, reducing attic temps by 20–30°F. Combined with upgraded insulation (#2 above), total savings can reach 20–30% on cooling costs.
Cost: $150–$300 | Annual savings: $130–$280 | Payback: 6–18 months
A smart thermostat learns your schedule and automatically adjusts temps when you're away or sleeping. In Texas, setting your AC to 78°F when home and 82–85°F when away can save 8–12% annually. Models with room sensors (like ecobee) are especially good for two-story Texas homes where upstairs is always hotter.
Cost: $500–$1,500 | Annual savings: $100–$300 | Payback: 2–5 years
The average Texas home loses 20–30% of conditioned air through leaky ducts — mostly in the attic where it's 130°F+. Professional duct sealing with mastic (not tape) and adding R-8 insulation wrap to ducts in unconditioned spaces can dramatically improve HVAC efficiency.
Cost: $8,000–$18,000 (full house) | Annual savings: $240–$720 | Payback: 8–15 years
New ENERGY STAR windows for the Southern climate zone with SHGC ≤ 0.25 and U-factor ≤ 0.30 make a massive difference — especially if replacing single-pane windows. While the payback is longer, the comfort improvement is immediate and dramatic. Focus on west and south-facing windows first.
Cost: $6,000–$12,000 | Annual savings: $180–$500 | Payback: 10–15 years (but necessary when old unit fails)
If your AC is 12+ years old, a new SEER2 16+ unit can cut cooling costs 20–30%. But upgrading insulation and sealing ducts FIRST often means you can buy a smaller (cheaper) unit when replacement time comes. Don't skip the cheaper improvements before dropping $8K+ on a new AC.
These improvements compound. Air sealing + attic insulation + radiant barrier + duct sealing can together reduce your cooling costs 30–40%. For a home with $400 summer electric bills, that's $120–$160/month saved — $480–$640 per summer season.
Total cost for all 4: $3,000–$7,000 | Total annual savings: $820–$2,100 | Combined payback: 3–5 years
We'll inspect your attic, check your insulation levels, find air leaks, and give you a prioritized list of improvements — with exact costs and savings estimates for your specific home.
Serving Montgomery, Magnolia, The Woodlands, Conroe, Tomball & all of Greater North Houston