Understanding SEER Rating: How It Impacts Your HVAC Efficiency in Oklahoma

Introduction

The triple-digit heat of an Edmond Summer can push your air conditioner into overdrive. Is your air conditioner working as efficiently as you think? Your SEER Rating may hold the answer to both reduced bills and increased comfort at home.

Here, we will define SEER, how your SEER rating impacts the operation of your heating, ventilation, and air conditioning (HVAC) System and the significance of SEER Ratings for Oklahoma Homeowners based on Oklahoma's climate.

Why SEER Rating Matters in Oklahoma

Edmond’s air conditioning (cooling) period runs from May through September in which many days reach the upper nineties in temperature; this long operating time will cost you money unless your air conditioner operates at its highest efficiency.

The United States Department of Energy indicates that replacing an air conditioner over ten years old with a higher SEER rating than the original unit, can reduce your cooling expenses by 20–40 percent per year.

Many local utility companies such as Edmond Electric and OG&E provide incentives (rebates) of up to $600 or greater for installing high-efficiency units, thus making it an attractive financial opportunity.

What Is SEER & How Does It Affect Your HVAC System?

What Is SEER? (Seasonal Energy Efficiency Ratio)

SEER measures how efficiently your AC cools your home during the season. Think of it like MPG for your air conditioner — the higher the number, the more efficient the system.

• Modern ACs range from 14 to 26 SEER

• Oklahoma requires 15 SEER minimum for new installs (as of 2023)

• Older units from the early 2000s may only have 8–12 SEER

How Higher SEER Saves You Money

A jump from 14 to 16 SEER can reduce cooling costs by up to 13%. Over a decade, that's thousands in savings.

Example:

• 14 SEER unit: $100/month

• 16 SEER unit: $87/month

Multiply that over 5 hot months per year, and it adds up fast.

Comfort Benefits of High-SEER Units

High-efficiency systems often include:

• Variable-speed compressors

• Better humidity control

• Quieter operation

This means more consistent temperatures, fewer hot/cold spots, and less indoor humidity — a big plus in Oklahoma’s muggy August evenings.

FAQ: "Does Higher SEER Cool Better?"

Not colder — but better. A 20 SEER unit uses less energy for the same result. Comfort improves due to longer, slower cooling cycles, which maintain steadier temps and pull more moisture out of the air.

How Do I Know My AC's SEER Rating?

Check the yellow EnergyGuide label on your outdoor unit, or look up the model number. If it’s older than 2010, it’s likely well below today’s efficiency standards.

Smart Steps to Improve HVAC Efficiency in Edmond

The following are ways to increase your home’s efficiency in regards to cooling as well as save on energy bills.

• Get a professional tune-up for your HVAC system prior to the onset of summer

• Seal and insulate all duct work (this is especially important if you live in an older home)

• Replace old systems with units that have a minimum 16 SEER rating

• Utilize a programmable thermostat at a temperature no lower than 78 degrees when you are at home

• Contact Edmond Electric to obtain a free home energy audit

Professional Tip: If you replace an old system (10+ years) you may be able to cut your cooling costs in half (up to 40%) provided the new system is properly sized. Have your contractor perform a Manual J calculation to ensure he does not size the unit too large.

Why This Matters Specifically in Edmond

Between summer heatwaves and increasing energy rates, Edmond homeowners can’t afford inefficient cooling. Most local homes either:

• Still run 8–14 SEER systems installed over a decade ago

• Use builder-grade 14 SEER systems in new construction

Local Rebates:

• Edmond Electric: $100 per ton for AC units ≥17 SEER

• OG&E: $100–$200 per ton for units ≥16.2 SEER2

Oklahoma Climate Impact:

• High humidity in July/August

• Design temp ~99°F in peak summer

• Longer cooling season = greater efficiency payoff

Finishing Up

Here’s what to remember about SEER and HVAC efficiency in Edmond:

• Higher SEER = lower bills and better comfort

• Oklahoma's climate makes efficiency a smart investment

• Local rebates make upgrading more affordable

• New systems offer better humidity control and longer life

Get ahead of the summer heat. Schedule a consultation, check your current SEER rating, and see if a more energy-efficient AC could be the solution.

Written by A&T Mechanical | Updated December 2025