For Memphis, TN homeowners, SEER2 is the seasonal efficiency rating for air conditioners and heat pumps under the testing standard in force since 2023. More cooling per unit of electricity under test conditions is what a higher number means. If you want help choosing a system, use Call Now and an independent HVAC contractor serving 59 ZIP codes around Memphis will answer.
What SEER2, EER2 and HSPF2 mean
- SEER2: Seasonal Energy Efficiency Ratio 2, cooling efficiency over a season under the updated test
- The 2 reflects a test with higher duct pressure than the old standard, so the numbers are lower than the older SEER values for the same equipment
- HSPF2: Heating Seasonal Performance Factor 2, heat pump heating efficiency
- EER2: Energy Efficiency Ratio 2, efficiency at a fixed hot condition, which matters in hot climates
Regional minimums
Regional minimums for efficiency come from the U.S. Department of Energy. The south and southwest require more of split-system air conditioners than the north does. The equipment label shows the rating, and your contractor can tell you which minimum applies to Memphis.
Is a higher SEER2 worth it?
Energy use drops with a higher rating only when the system is the right size, the ducts are sealed and the installation is good. A mild climate with few cooling hours is slow to benefit from a very high rating, whereas a hot climate with long cooling seasons gets bigger savings. Variable-speed models also bring better humidity control and quieter running.
Reading an efficiency label
- Look for the model and serial numbers on the nameplate
- Compare ratings for the same indoor and outdoor combination
- Check the cooling and heating ratings on the AHRI certificate for the exact matched system
- Ask about utility rebates and eligibility rules
A checklist for this week
- Clear the outdoor unit of debris
- Inspect the drain line outlet and the area around the air handler for water
- Book a tune-up if it has been more than a year
- Test the thermostat and schedule
- Write down any noises or smells
- Check supply and return registers
Ducts, airflow and comfort
Comfort depends on airflow as much as on cooling capacity. Leaky ducts, undersized returns and blocked registers cause hot rooms even when the system is sound. A technician who measures static pressure and airflow, not just refrigerant pressures, will find these problems.
Myths and facts
- Myth: maintenance is optional. Fact: dirty coils and weak capacitors cause many summer failures.
- Myth: a bigger AC is always better. Fact: oversizing causes short cycling and humidity problems.
- Myth: set the thermostat very low to cool faster. Fact: the AC cools at a steady rate and just runs longer.
- Myth: refrigerant is used up. Fact: low refrigerant means a leak.
- Myth: closing vents saves energy. Fact: it raises duct pressure and can cause leaks and noise.
HVAC terms explained
- Static pressure: a measure of airflow resistance in the ducts
- Contactor: the switch that sends power to the outdoor unit
- Capacitor: stores charge to start and run the compressor and fan motors
- Evaporator coil: the indoor coil where refrigerant absorbs heat from the air
- EPA Section 608: the certification required to handle refrigerants
- Superheat and subcooling: readings that show whether the refrigerant charge is correct
- Condenser coil: the outdoor coil where heat is released
- Condensate drain: the line that carries moisture out of the house
What shapes the written scope
Two AC calls that sound alike can be very different jobs. The written scope should say what the technician found and which of these factors applied.
Have the provider show the diagnostic and the repair as separate items, and list any parts, labor or follow-up that are left out.
- Whether the ductwork, return air or thermostat contributes to the problem
- The age, tonnage and refrigerant type of the system
- Access to the air handler in the attic or closet and to the outdoor unit
- Whether the fault is an electrical part, an airflow problem, a refrigerant leak or a drainage problem
- Warranty status of the parts and whether the equipment is registered with the manufacturer
Safety and rules to know
Three hazards share one machine in an air conditioner: high-voltage electricity, pressurized refrigerant and moving parts. Opening electrical panels, bridging contactors and adding refrigerant are not jobs for homeowners, and capacitors can keep a charge after the power is off.
In the United States, anyone who buys or handles refrigerant must be certified under EPA Section 608, and refrigerant must be recovered and not vented. Ask the technician for their certification and check the contractor's licence with Tennessee Board for Licensing Contractors (HVAC classifications).
Questions to ask before approving a repair
- Will you give me the findings and the scope in writing before work starts?
- What are my options: repair now, repair and monitor, or replace?
- What does the repair warranty cover and for how long?
- How old is the system and which refrigerant does it use?
- What failed, how did you confirm it and can you show me the part or the reading?
Prepare your Memphis home before the technician arrives
- Check that the outdoor disconnect and the breaker are on, but do not open electrical panels
- Write down the sounds, smells, leaks or ice you have noticed, and when
- Set the thermostat to cool and note what it shows and what the house temperature is
- Clear weeds, leaves and debris from around the outdoor unit
- Replace or check the filter, and clear furniture from the return grille and the air handler
When to call a professional
Several situations call for a contractor: a system that will not start, ice or water, a problem that returns after your own checks, grinding or banging noises, or anyone in the house who is vulnerable to heat or cold. Use Call Now at the top of the page, describe what the system is doing, and you will reach an independent HVAC contractor who covers your ZIP code, confirms the address and diagnoses the system in person.
What this means for a home in Memphis
Hot, humid Mid-South summers with heat indexes often above 100 degrees; winters can bring ice storms. Humidity drives condensate drain clogs, sweating ducts, and mold in air handlers.
Memphis Light, Gas and Water (MLGW) is the local utility. Older homes in Midtown, Cooper-Young, Binghampton, and Whitehaven; newer homes in Cordova, Collierville, Germantown, and Bartlett. Bring these local details into any comparison of advice, and ask each technician how they apply to your system and your house.
Getting help in Memphis and nearby cities
Independent HVAC contractors covering 59 ZIP codes in Memphis, Tennessee are reached through Air Conditioning Repair Memphis: 37501, 37544, 38101, 38103, 38104, 38105, 38106, 38107, 38108, 38109. Providers who serve Ellendale, Germantown, Cordova and Collierville can also receive requests. Each address is confirmed separately.
Start with Call Now at the top of the page and say what you have found. The contractor checks your address, looks over the system and gives you the scope in writing.
Keep reading
Related pages for Memphis homeowners: Frozen AC Coil: Why It Happens and What to Do; AC Repair or Replace? A Decision Guide for Memphis; Summer HVAC Checklist for Memphis; AC Not Cooling? 12 Causes and Fixes. For the area list, see the service areas page.
Common questions about SEER2 explained for memphis homeowners
What is the difference between SEER and SEER2?
The revised test behind SEER2 gives the same equipment a lower number than the old SEER rating did.
What SEER2 do I need?
At least the regional minimum. Higher ratings save more in hot climates.
Does a higher SEER2 mean better comfort?
Not on its own, since sizing, ducts and staging matter as well.
What is EER2?
A measure of efficiency at a hot test condition, useful in hot climates.
Do heat pumps use SEER2?
Yes for cooling; for heating it is HSPF2.
Where do I find the rating?
Look at the nameplate, the AHRI certificate or the manufacturer data sheet.