Okay, the above may be a slightly overblown statement but only by a little. Because the payback on EC motor condenser systems vs. PSC motor condenser systems goes way beyond the benefits we documented back in 2009 , including higher energy savings, increased reliability, better pressure control, and reduced noise. Everyone is truly concerned with how the EC motors will pay for themselves.
So here goes:
But the real payback comes when we do a little math. Don’t worry, we’ll do it for you.
Example: EC motor costs approximately $500 more than the PSC motor. The gForce unit with EC motors (GHRC-176) costs approximately $2,500 (5 fans at $500 per fan) more than a similar unit with PSC motors. Let’s say we were to put the GHRC-176 on a roof in Atlanta where temperatures reach 85°F less than 1% of the year, between 65°F and 85°F 42% of the year and less than 45°F 17% of the year.
If one KWH costs $.10, and the unit was on 100% of the time, ramping up and down based on ambient temperature, the savings would be $1,114.03 and the payback period for the EC motor condenser over the PSC would equate to 2.2 years.
The EC unit actually pays for itself in a little over 2 years!
While it’s actually fairly easy to calculate payback if you know the ambient temperature of the installation and the temperatures at which our fans ramp up and down, we have put together a Payback calculator for our EC fans on condensers.
Our Payback Calculator will be released later this year. It will give the user the ability to simply input the condenser model number, location cost/KWH and percentage of the year that the unit will run. From the input parameters, the calculator will then output annual energy usage, cost and annual savings between the EC and PSC motor condenser units as well as the payback period for the EC unit.
With this innovative tool, it will be easy to be proactive in going out and selling EC condenser units!