How Much Money Can You Save With A Variable Speed Pump?




We discuss the factors that play into your total energy savings with a variable speed pool pump


 

If you spend the extra money and install a high efficiency variable speed pool pump, how long will it take for your new pump to pay for itself? If you are looking for the quickest way to calculate your savings, you should look the

Jandy Energy Cost Estimator.

If you want to get a better understanding of how a high efficiency, variable speed pump saves you money, read on. Your total savings really depends on several factors: 

  • The size of your current pump and the current cost of operation
  • The size of your pool and the number of hours it takes to complete a filtration cycle
  • The flow requirements of other water features (waterfalls, raised spas, cleaning systems)

HOW MUCH IS YOUR OLD PUMP COSTING YOU TO OPERATE?

In order to understand your savings, you need to understand how much your old standard pump is costing you to operate. Find the HP rating on your pump and then go across the chart to find the annual cost if you are running 8, 10, or 12 hour cycles.

HP Rating

 Amp Draw

 Cost Per Hour

 Yearly Cost - 8 Hour Filter Cycle

Yearly Cost - 10 Hour FIlter Cycle

 Yearly Cost - 12 Hour Filter Cycle

1.0 7.2 17 cents  $505.16 $631.45 $757.74
1.5 9.0 21 cents $621.96 $777.48 $937.94
2.0 12.0 24 cents  $709.86 $886.95 $1,064.34
3.0 13.6 33 cents  $954.84  $1,193.88 $1,432.26



HOW MUCH WILL YOUR NEW PUMP COST YOU TO OPERATE?

We are going to use a 24,000 gallon pool for the sake of this chart. 

Find your pool size and you will see how much flow is required to pump the entire volume of your pool though your filter in one twelve hour cycle. 

If you have a raised spa, you will want to increase the RPM by 200 - 400 RPM to get a nice overflow. If you have other water features such as Rockfalls, Sheer Descents or Laminar Jets, you will also have to account for the flow required by those features. 

Most of the time we also program a higher RPM for two hours per day while the cleaner is operating . Even with these higher speeds, the overall cost of operation is still significantly less than the older, less efficient pumps. 

 

Pool Size 

Required Flow 

 Required RPM

 Wattage/Hour

Cost Per Hour 

Yearly Cost
12 Hour filter cycles 

16,000 Gallons  25 GPM  1600 RPM   262 2.6 cents  $113.88 
24,000 Gallons  35 GPM  1800 RPM  365  3.65 cents  $159.87 
30,000 Gallons  42 GPM  2000 RPM   493 5.0 cents  $219.00 
36,000 Gallons  50 GPM  2400 RPM  834  8.3 cents  $363.54 

SO HOW MUCH ARE YOU ACTUALLY GOING TO SAVE?

When it comes time to replace your pump . . . if you go with a variable speed pump instead of a standard pump, the cost difference between the two is about $750.00. In most cases, you recover that additional expense in just a year or so.

24,000 Gallon Pool, 2.0 HP Pump Annual Savings: $549.99 Payback Time: 16 months

If you have a 24,000 gallon pool with a 2.0 HP pump that is running 8 hour filter cycles, you are currently spending $709.86 per year on your energy bill. If you go with a variable speed pump you will spend about $159.87 per year on your energy bill. That is an annual savings of $549.99!

The cost difference between a standard 2.0 HP pump and a variable speed pump is $750.00. You will recover this cost difference in about 16 months. After that, it will continue to pay you back dividends month after month. 

24,000 Gallon Pool, 1.5 HP Pump Annual Savings: $462.09  Payback Time: 21 months

If you have a 24,000 gallon pool with a 1.5 HP pump that is running 8 hour filter cycles, you are currently spending $621.96 per year on your energy bill. If you go with a variable speed pump you will spend about $159.87 per year on your energy bill. That is an annual savings of $462.09!

The cost difference between a standard 1.5 HP pump and a variable speed pump is $800.00. You will recover this cost difference in about 21 months. After that, it will continue to pay you back dividends month after month, for the entire life of the pump (normally at least ten years)

WILL EVERYTHING WORK WELL AT LOWER FLOW RATES?

Good question!! If you have water features such as a spa that overflows into your pool, or a water fall that runs all the time or sheer descents, then you may need to run the pump at a higher speed to make these work properly. We can also adjust the valves to push more of the water to these features. 

We will generally also program the pump to a slightly higher speed for 2-3 hours per day to create a "cleaning cycle" to coincide with the run time on the automatic pool cleaner so that the skimmers and the main drain more effectively pull in the debris.

With a variable speed pool pump, there is a balance between economy and performance. 

If you choose maximum energy savings, you will probably save 75% or more on your pool energy costs, but your pool may not stay as clean. If you choose maximum performance and run the pump at higher speeds, you will keep you pool as clean as you did with your old single speed pump, but you will still save 40 - 50% on your pool energy costs. Either way . . . YOU WIN!!

PROFESSIONAL INSTALLATION IS A MUST

At Poolstop, we offer professional installation of your variable speed pump. The installation on a new variable speed pump involves more than just plumbing and wiring. It involves optimize the pool and the pump settings for maximum energy savings.

  • Adjust the programming on the pump to achieve a 12 hour turnover time.
  • Adjust the return inlets and the valve actuators at the equipment to provide proper flow to you water features, even at lower speeds
  • Set the various speeds on the pump to provide balance performance with energy efficiency.

Still not sure how much a variable speed pump will save you? Call our office and speak with a trained technician who can review the specifics of your pool and provide you with an estimate of your cost savings.

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