Page 29 - Green Builder Remodeling Field Report 2021

Before

THE POOL

Going With the Flow

Below is the equipment we have speed possible but fast enough to move the water over the
skimmer. To filter all the water at a lower speed might take
selected and why: 6-12 hours or more, but the result is up to 75% savings on your

FILTER PUMP: I selected the most energy efficient, long-last- energy bills. The additional benefit is that it has longer run
ing, variable speed pump I could find. I landed on the Hayward times and provides cleaner water, with more consistent clarity.
VS Tri-Star 950. It has a WEF (Weighted Energy Factor) rating AUTOMATION: The beauty of the pool equipment we
of 12.9, nearly double the efficiency of every other manufac- selected is that all of the Hayward equipment can be controlled
turer. Variable speed pumps that are properly set up can save and adjusted from their OmniLogic automation system, which
75% on filtration energy costs. If you are wondering how this is can be operated from anywhere with a smartphone App. It
possible, it comes down to basic science. The Affinity Law (see could be raining, or 115 degrees outside, and we can control our
table) states that if you reduce the running speed of the pump pool and outdoor lighting from the comfort of our home.
by 50%, the power draw is reduced by 87.5%. So, for example, LIGHTING: Selecting proper Lighting is important not only
if you reduce the pump speed from 3,450 rpm to 2,400 rpm for energy savings but also pool safety for night swimming. A
(a 30% reduction in speed), the required wattage draws drops typical incandescent pool light draws 500 watts, and often does
from 2,000 watts to 593 watts—a 70% reduction in power. not light all corners of the pool. We chose Hayward ColorLogic
I did a case study for a Department of Energy Guide on LED lights, which use 86% less energy, and have 10 built-in
pools. I co-wrote, and was the subject matter expert on pools, colors and seven light shows. These LED lights last 10 times as
where we replaced a single speed pump and a booster pump long as typical pool incandescent lighting. In addition, the lights
for the pool sweep with one variable speed pump. The energy are small, allowing us to place more lighting throughout to pool
use went from 16 kWh/day to 3.3 kWh/day, for a savings of and spa, for more efficient and attractive illumination.
12.7 kWh per day. FILTRATION: We installed the Paramount in-floor cleaning
The key is setting the pump to run at low speeds for longer and circulation system, which uses pop-up jets that shoot
periods of time. For most residential pools you want to filter water across the pool floor. This cleans the pool bottom, and
all the water once a day. Your pool expert simply calculates the eliminates the robotic pool sweep that we always seem to run
volume of your pool and sets the pump to run at the lowest into while we are swimming laps. GB

REMODELING FIELD REPORT GREEN BUILDER 29