SEER Rating Chart
Complete SEER rating reference chart from 8 to 25+ SEER. Compare efficiency levels, energy costs, and recommendations for every rating tier. Includes side-by-side tables showing annual kWh usage and dollar costs at each SEER level.
HVAC & SEER Guides
Learn about SEER ratings, energy efficiency, and how to choose the right AC unit for your home and climate.
Our guides cover everything from understanding SEER rating charts and savings calculations to finding your current system's efficiency and navigating the 2023 SEER2 transition. Whether you're planning an upgrade or just learning, these resources will help you make informed decisions.
Featured Guide
SEER Energy Savings Calculator Guide
The complete guide to calculating AC energy savings. Includes formulas, climate zone data, real-world examples, payback period analysis, and tips for maximizing your savings when upgrading to a higher SEER unit.
Read the Full Guide →SEER Rating Guides
What SEER Rating Do I Need?
Choosing the right SEER rating for your climate zone and budget. Specific recommendations for hot, warm, moderate, and mild regions. Features a decision matrix and climate zone map to help you find your ideal efficiency level.
SEER Rating Savings Chart
How much you save at each SEER level with detailed charts by climate zone. Includes payback period analysis, 10-year savings projections, and interactive comparison tables that factor in your local electricity rate.
Is Higher SEER Worth It?
Cost-benefit analysis of high SEER units with real payback calculations. Discover the efficiency sweet spot for your climate and electricity rate. Includes breakeven charts, diminishing returns analysis, and upgrade scenario comparisons.
Calculators & Conversions
SEER Energy Savings Calculator Guide
How to calculate your AC energy savings when upgrading to a higher SEER unit. Includes step-by-step formulas, climate zone data, real-world savings examples, and a detailed walkthrough of payback period calculations.
HVAC Efficiency Calculator Guide
Understanding HVAC efficiency calculations for both cooling and heating. Covers SEER, EER, HSPF, AFUE, and how to compare different system types. Includes worked examples for central AC, heat pumps, and furnaces.
EER to SEER Conversion
How to convert between EER and SEER ratings with our formula and conversion chart. Understand when each metric matters most for your climate. Features a complete lookup table and explains the DOE testing methodology behind each rating.
Equipment & Standards
SEER vs SEER2 Explained
Understanding the 2023 transition from SEER to SEER2 testing standards. Learn conversion formulas and new minimum efficiency requirements. Covers regional differences, compliance timelines, and what the change means for consumers shopping for new units.
Heat Pump SEER Ratings
SEER ratings for heat pump systems explained alongside HSPF heating efficiency. Compare heat pump types and find the right efficiency for your climate. Includes ratings for mini-splits, ducted systems, and cold-climate heat pumps.
How to Find Your AC's SEER Rating
Where to find your unit's efficiency rating using labels, nameplates, and model numbers. Includes manufacturer lookup links, age-based estimation methods, and photo examples showing exactly where to look on your outdoor unit.
Trusted HVAC Resources
These official resources complement our guides with authoritative data on energy efficiency standards, equipment ratings, and available incentives:
U.S. Department of Energy
Official energy efficiency guidelines, minimum standards, and consumer advice for heating and cooling systems.
ENERGY STAR
Find certified high-efficiency air conditioners and heat pumps that meet strict EPA efficiency criteria.
AHRI Directory
Look up certified HVAC equipment ratings by manufacturer and model number.
DSIRE Incentives Database
Find rebates, tax credits, and incentive programs for energy-efficient HVAC equipment in your state.
ACCA - Find a Contractor
Locate certified HVAC contractors in your area through the Air Conditioning Contractors of America.
EIA Electricity Data
Current U.S. electricity rates by state from the Energy Information Administration.
Ready to Calculate Your Savings?
Use our free SEER calculator to estimate energy savings, compare SEER ratings, convert EER to SEER, and calculate annual cooling costs.
Open SEER Calculator →