13 Seer vs 15 Seer Savings Calculator

Upgrading from a 13 SEER to a 15 SEER air conditioner can significantly reduce your energy bills. Use this calculator to determine your potential annual savings and return on investment when considering an upgrade.

What is SEER?

SEER (Seasonal Energy Efficiency Ratio) measures how efficiently an air conditioner converts energy into cooling. A higher SEER rating means better efficiency and lower energy consumption. The U.S. Department of Energy recommends a minimum SEER rating of 14 for new air conditioners.

The SEER rating is calculated by dividing the total cooling output (in BTUs) by the total electrical energy input (in watts) over a cooling season. The formula is:

SEER = (Total Cooling Output in BTUs) / (Total Electrical Energy Input in Watts)

For example, an air conditioner with a SEER of 15 uses 15 watts of electricity to produce 1 BTU of cooling.

How to Calculate Savings

To estimate your annual savings from upgrading to a higher SEER air conditioner, you need to know:

Your current air conditioner's SEER rating (13 in this case)
The proposed new air conditioner's SEER rating (15 in this case)
Your average monthly electricity cost for running the air conditioner
The number of months your air conditioner typically runs per year

The savings calculator uses this formula to determine annual savings:

Annual Savings = (Current Monthly Cost × Current SEER × (New SEER - Current SEER)) × Number of Months

This formula accounts for the increased efficiency of the new unit, which will use less energy to provide the same cooling.

Comparison Table

Here's a comparison of energy efficiency between 13 SEER and 15 SEER air conditioners:

SEER Rating	Energy Efficiency	Annual Energy Savings	Cost Savings Potential
13 SEER	Moderate	Lower	Lower
15 SEER	High	Higher	Higher

As shown in the table, a 15 SEER unit is significantly more energy efficient than a 13 SEER unit, potentially saving you hundreds of dollars annually on your energy bills.

Worked Example

Let's look at a practical example to illustrate how the savings calculator works.

Suppose you currently have a 13 SEER air conditioner and are considering upgrading to a 15 SEER unit. Your current monthly electricity cost for running the air conditioner is $120, and you use it for 8 months each year.

Using the savings formula:

Annual Savings = ($120 × 13 × (15 - 13)) × 8 Annual Savings = ($120 × 13 × 2) × 8 Annual Savings = $3,120 × 8 Annual Savings = $24,960

This means you could potentially save $24,960 per year by upgrading from a 13 SEER to a 15 SEER air conditioner.

Note: Actual savings may vary based on your specific usage patterns, climate, and other factors. This is an estimate based on average conditions.

FAQ

How much does a SEER upgrade typically cost?

The cost of upgrading to a higher SEER air conditioner varies depending on the size of your system and the brand. Generally, you can expect to pay between $3,000 and $8,000 for a new high-efficiency unit.

How long does it take to recoup the cost of a SEER upgrade?

The payback period for a SEER upgrade depends on your energy costs and the efficiency difference. With significant savings, you may recoup the cost within 2-5 years.

Are there government incentives for upgrading to a higher SEER unit?

Yes, many governments offer tax credits, rebates, or other incentives for installing energy-efficient HVAC systems. Check with your local utility company or government agency for available programs.