SEER2 Changed the Game — Here's What You Need to Know
I'm Omar Jacobo, EPA 608 certified (#2396328) and owner of Frosty's HVAC. If you're shopping for a new AC system in 2026, you've probably noticed that efficiency ratings look different than they did a few years ago. That's because the Department of Energy switched from SEER to SEER2 in January 2023. If you're comparing old quotes to new ones, or reading advice that hasn't been updated, you'll get confused fast. Let me clear it up.
What's the Difference Between SEER and SEER2?
SEER (Seasonal Energy Efficiency Ratio) measured how efficiently an AC system converts electricity into cooling over a typical cooling season. SEER2 measures the exact same thing — but under updated testing conditions that more accurately reflect real-world installation. The new test uses higher static pressure (the resistance your ductwork creates against airflow), which means SEER2 numbers come out slightly lower than the old SEER numbers for the same equipment.
A system that was rated 16 SEER under the old standard might test at 15.2 SEER2 under the new one. The equipment didn't get worse — the test got more realistic. Think of it like switching from a treadmill test to running outside with wind resistance. Same runner, harder course, lower score.
The federal minimum for our region (the Southwest, which includes all of Texas) is now 14.3 SEER2 for split systems. You literally cannot buy a new system rated below that.
Why SEER2 Matters More in DFW Than Anywhere Else
Here's what makes this conversation different in Dallas-Fort Worth compared to, say, Ohio or Oregon. We have roughly 2,600+ cooling degree days per year. That means your AC system isn't running a few months — it's running hard from April through October, and sometimes into November. On peak summer days hitting 100-110°F, your system runs 12-16 hours straight. Attic temperatures in Farmers Branch, Coppell, and Irving homes reach 140-160°F, and your ductwork is sitting right in that heat.
In a mild climate, the difference between a 15 SEER2 and a 20 SEER2 system might save you $150 a year. In DFW, that difference can be $400-$700 per year because you're running the system so many more hours. Over a 15-year equipment lifespan, that's $6,000-$10,500 in real electricity savings.
The Three SEER2 Tiers We Install (and Who Each One Is For)
At Frosty's HVAC, we've built our AC replacement packages around three efficiency tiers. Each one is a real option for real homeowners — not a bait-and-switch where we steer everyone to the expensive one.
Stay Cool — 15 SEER2 (Goodman): $8,000-$14,000
This is the entry point, and it's a solid system. A 15 SEER2 Goodman single-stage unit is well above the federal minimum, comes with the Frosty Thermostat (our smart thermostat — included on all tiers), a new disconnect box, electrical whip, overflow condensate shutoff, and a 1-year labor warranty plus manufacturer equipment warranty.
Who it's for: Homeowners on a budget, rental properties, or anyone whose priority is reliable cooling without premium features. If you're in a smaller 1960s ranch-style home in Farmers Branch or an older Irving neighborhood and you're replacing a 10-12 SEER system, a 15 SEER2 unit will cut your summer electric bill noticeably.
Estimated annual cooling cost at 13.8¢/kWh: Around $1,100-$1,400 for a typical 3-ton system in DFW.
Stay Frosty — 18 SEER2 (Carrier): $12,000-$18,000
This is our most popular tier, and for good reason. The jump from 15 to 18 SEER2 is where you see the biggest bang for your buck. A dual-stage Carrier compressor runs at a lower, quieter speed most of the time and kicks up to full power only when it's 100°F outside. That means better humidity control, more even temperatures between rooms, and significantly lower electricity consumption.
Who it's for: Most DFW homeowners. If you have a two-story home in Flower Mound or Coppell where the upstairs is always hotter than the downstairs, dual-stage operation makes a real difference. If you plan to stay in the home 7+ years, the energy savings will offset a big chunk of the price difference versus the value tier. Includes ductwork inspection and sealing (up to 5 connections) plus a 2-year labor warranty.
Estimated annual cooling cost at 13.8¢/kWh: Around $850-$1,100 for a typical 3-ton system. That's roughly $250-$350/year less than the 15 SEER2 tier.
It's A Frosty Life — 20+ SEER2 (Trane): $16,000-$26,000
This is the top of the line. A variable-speed inverter-driven Trane system doesn't cycle on and off — it adjusts its output continuously like a dimmer switch. It holds your set temperature within 1°F, runs whisper-quiet, and delivers the lowest possible energy bills. Includes full ductwork inspection and sealing, vibration isolation mounts, 1-year Frosty Club membership ($99 value), and a 5-year labor warranty.
Who it's for: Homeowners who work from home, have large homes in Grapevine or Flower Mound, or simply want the best system money can buy. If you're keeping the home long-term and your current electric bills are $300-$400/month in summer, the savings add up fast.
Estimated annual cooling cost at 13.8¢/kWh: Around $650-$900 for a typical 3-ton system. That's $400-$500/year less than the value tier.
Running the Numbers: Real Energy Savings in DFW
Let's do the math with actual DFW data. Average Oncor-territory electricity is 13.8¢ per kWh. A typical DFW home uses 2,000-2,500 kWh/month in summer, and roughly 60-70% of that goes to cooling. Over a full cooling season (roughly 7 months of meaningful AC use in Texas), here's what each tier costs to operate for a 3-ton system:
- 15 SEER2: ~$1,200/year in cooling costs
- 18 SEER2: ~$950/year (saves ~$250/year vs. 15 SEER2)
- 20+ SEER2: ~$750/year (saves ~$450/year vs. 15 SEER2)
Over 15 years, the 18 SEER2 saves you roughly $3,750 compared to the 15 SEER2. The 20+ SEER2 saves roughly $6,750. Factor in rising electricity rates (they've gone up every year in Texas), and the real savings are even higher.
What I Tell My Customers
When a homeowner in Lewisville or Grapevine asks me "what SEER2 should I get?" — I ask them three questions:
- How long are you staying in this home? Less than 5 years? The 15 SEER2 makes financial sense. More than 7? The 18 or 20+ starts paying for itself.
- What are your summer electric bills now? If you're already at $300-$400/month, the higher efficiency tiers will make a dramatic difference you'll feel every month.
- How important is comfort vs. cost? Dual-stage and variable-speed systems don't just save money — they keep your home more comfortable with better humidity control and more even temperatures.
There's no wrong answer. Every tier we install comes with professional installation, the Frosty Thermostat, and a system that's properly sized using a Manual J load calculation — not guesswork.
Don't Forget the Frosty Club
Whichever tier you choose, our Frosty Club Premium membership ($300/year) includes 2 tune-ups per year, $500 off any repair, and 15% off parts. Keeping your system maintained is how you actually achieve the efficiency its SEER2 rating promises. A neglected 20 SEER2 system can perform like a 15. The Basic membership ($99/year) gets you 10% off any repair and priority scheduling.
Ready to Talk Numbers?
Try our AC Replacement Cost Calculator to get a ballpark price for your home in about 60 seconds. Or call me directly at (469) 254-0548 for a free in-home estimate. We serve Farmers Branch, Coppell, Irving, Flower Mound, Lewisville, and Grapevine — and we've been doing this since January 2018.
— Omar Jacobo, Owner, Frosty's HVAC | EPA 608 #2396328 | TACLA126718E