💧 Pentair WhisperFlo® High Performance Pool Pump | 1.1 THP, 115/208-230V, Single Speed, TEFC | 015583

The Industry’s Top-Selling High Performance Pool Pump – Now DOE Compliant with NEMA Premium® Efficient Motor Technology 🏊‍♂️

📋 Product Overview

The Pentair WhisperFlo® (015583) is the updated, DOE-compliant version of the pool industry’s best-selling high performance pump. Featuring the first and only single-speed NEMA Premium® Efficient motor designed specifically for pool applications, this pump delivers powerful water circulation while meeting current Department of Energy efficiency requirements.

Pentair’s legendary hydraulic design has been refined over 40 years to move water more efficiently and more quietly than competing pumps. The WhisperFlo’s patented FunnelFlo™ diffuser and high-efficiency impeller maximize flow while minimizing turbulence and noise – earning its name as a true “whisper-quiet” performer. Under typical operating conditions, it delivers the highest water flow of any high performance pump in its class.

Built with a heavy-duty Totally Enclosed Fan-Cooled (TEFC) motor, commercial-grade frame, and corrosion-resistant thermoplastic housing, the WhisperFlo 015583 is engineered to handle demanding installations and deliver years of trouble-free operation. The dual-voltage design (115/208-230V) provides flexible installation options for both residential and commercial applications.

⭐ Key Features

✅ NEMA Premium® Efficient Motor – The first and only single-speed pool pump to use NEMA Premium Efficient motor technology, optimizing energy use while maintaining full hydraulic performance

✅ DOE Compliant – Meets current U.S. Department of Energy minimum efficiency requirements, ensuring regulatory compliance for new installations

✅ Whisper-Quiet Operation – Pentair’s proprietary hydraulic design and advanced FunnelFlo™ diffuser minimize turbulence and noise for a peaceful backyard environment

✅ Totally Enclosed Fan-Cooled (TEFC) Motor – High-quality proprietary motor design provides superior cooling, dust and moisture protection, and extended motor life

✅ Cam and Ramp™ See-Through Lid – Engineered-polymer clear lid permits fast and easy strainer basket inspection, locks in place with just a quarter turn

✅ Advanced FunnelFlo™ Diffuser & Impeller – Patented design maximizes water flow while minimizing turbulence and energy waste

✅ Dual-Voltage Flexibility – Operates on 115V or 208-230V electrical systems, accommodating a wide range of installation setups

✅ Heavy-Duty Construction – 40% glass-filled thermoplastic housing withstands extreme heat and resists corrosion for long service life

✅ Oversized Strainer Basket – Extended time between cleanings, reducing maintenance effort

✅ 2″ NPT Suction & Discharge Ports – Industry-standard connections for easy integration with existing plumbing systems

🔧 Technical Specifications

Specification	Value
Model Number	015583 / EC-015583
Brand	Pentair
Series	WhisperFlo® High Performance
Pool Type	In-Ground
Pump Type	Self-Priming, Single Speed
Total Horsepower (THP)	1.1 THP
Hydraulic Horsepower (HHP)	0.69 HHP
WEF (Weighted Energy Factor)	3.4
Motor Type	NEMA Premium® Efficient TEFC
Input Voltage	115/208-230VAC at 60Hz
Input Current	10.5A @ 115V / 5.5A-5.4A @ 208-230V
Service Factor	1.0
Motor Phase	Single Phase
Motor Frame	56 Square Flange (NEMA)
Motor Shaft	Stainless Steel, Threaded
Motor Bearings	Permanently Lubricated, Sealed
Suction Port Size	2″ NPT
Suction Connection	Female Pipe Thread (FPT)
Suction Style	Top
Discharge Port Size	2″ NPT
Discharge Connection	Female Pipe Thread (FPT)
Discharge Style	Center
Housing Material	40% Glass-Filled Thermoplastic
Strainer Lid	Engineered Clear Polymer (Cam & Ramp™)
DOE Compliant	Yes
ENERGY STAR® Certified	No (Single-Speed Design)
Certifications	UL Listed‡, NSF/ANSI 50§
Replaces	011513, 011580
Application	Residential & Commercial

‡ ‘UL’ indicates the pump bears a UL mark and/or cUL mark, signifying evaluation to UL 1081, the US Standard for Safety of Swimming Pool Pumps, Filters, and Chlorinators

§ ‘NSF/ANSI 50’ indicates evaluation to NSF/ANSI/CAN 50, the Standard for Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities

💰 Usage Costs & Running Expenses

📊 Annual Running Cost Calculation

Energy Rate Used: $0.1778 per kWh (US national average residential electricity rate, EIA data, February 2026)

Power Consumption Estimate: Based on verified electrical specifications:

• At 230V: 5.4A × 230V = ~1,242W apparent power
• At 115V: 10.5A × 115V = ~1,208W apparent power

⚠️ Note: The above figures represent apparent power calculated from nameplate voltage and amperage. Actual real power consumption depends on power factor and operating conditions. For cost estimation purposes, we use a conservative estimate of 1.2 kW based on these nameplate ratings.

🏊 Usage Scenario 1: Standard Residential Pool (Seasonal Use)

Parameters:

• Daily runtime: 8 hours
• Pool season: 180 days (6 months)
• Estimated power: 1.2 kW

Calculation:

• Annual hours: 8 × 180 = 1,440 hours
• Annual energy: 1.2 kW × 1,440 hours = 1,728 kWh
• ✅ Annual cost: 1,728 × $0.1778 = $307.24

♨️ Usage Scenario 2: Extended Season (Warmer Climates)

Parameters:

• Daily runtime: 8 hours
• Pool season: 270 days (9 months)
• Estimated power: 1.2 kW

Calculation:

• Annual hours: 8 × 270 = 2,160 hours
• Annual energy: 1.2 kW × 2,160 hours = 2,592 kWh
• ✅ Annual cost: 2,592 × $0.1778 = $460.86

🔥 Usage Scenario 3: Year-Round Operation (Florida, Arizona, etc.)

Parameters:

• Daily runtime: 6 hours
• Pool season: 365 days
• Estimated power: 1.2 kW

Calculation:

• Annual hours: 6 × 365 = 2,190 hours
• Annual energy: 1.2 kW × 2,190 hours = 2,628 kWh
• ✅ Annual cost: 2,628 × $0.1778 = $467.26

🌎 Regional Cost Variations (Seasonal Use – 1,440 hours/year)

State/Region	Rate ($/kWh)	Annual Cost (1,728 kWh)
North Dakota (Lowest)	$0.1193	$206.15
Texas	$0.145	$250.56
US National Average	$0.1778	$307.24
California	$0.3191	$551.41
Hawaii (Highest)	$0.402	$694.66

Regional rates based on EIA Electric Power Monthly data, 2025-2026

📈 WhisperFlo DOE vs. Pre-DOE Single-Speed Pump Comparison

The WhisperFlo 015583 features a NEMA Premium® Efficient motor that delivers improved energy efficiency compared to older standard-efficiency single-speed pumps. Pool owners replacing an aging pre-DOE pump can expect measurable energy savings due to the motor’s higher efficiency rating.

Factor	Pre-DOE Standard Motor	WhisperFlo DOE (015583)
Motor Type	Standard Efficiency	NEMA Premium® Efficient TEFC
DOE Compliant	❌ No	✅ Yes
Motor Cooling	Open Drip-Proof or TEFC	✅ Advanced TEFC
Motor Protection	Basic	✅ Totally Enclosed, Dust/Moisture Sealed
Expected Motor Life	Standard	✅ Extended (Better Cooling & Sealing)

⚠️ Important Consideration: While the WhisperFlo DOE is the most efficient single-speed option available, pool owners should be aware that variable speed pumps (such as the Pentair IntelliFlo3 or WhisperFlo VST) offer significantly greater energy savings – up to 90% compared to single-speed pumps. Variable speed technology is the recommended choice for maximum energy efficiency. The WhisperFlo 015583 is best suited for specific applications where single-speed pumps are appropriate, such as small pools, pumped water features, and situations where variable speed is not practical.

🎯 Real World Examples & Applications

🏊‍♂️ Small to Medium Residential Pools

The WhisperFlo 015583 at 1.1 THP is ideally sized for residential pools where consistent, reliable circulation is the priority. Its high-performance hydraulics deliver strong flow rates with less horsepower than competing pumps, making it an efficient choice for everyday pool filtration.

🌊 Pumped Water Features

Under DOE regulations, single-speed pumps remain a practical solution for dedicated water feature applications such as fountains, waterfalls, and deck jets. The WhisperFlo’s balanced flow design and quiet operation make it well-suited for water features that require consistent high flow rates.

🔄 Drop-In Replacement for Older WhisperFlo Models

The 015583 is a direct replacement for discontinued models 011513 and 011580, with identical port alignment and plumbing connections. Pool owners upgrading from these older models benefit from the NEMA Premium Efficient motor and DOE compliance without any plumbing modifications.

🏢 Commercial Pool Applications

The WhisperFlo’s commercial-grade construction, heavy-duty motor frame, and corrosion-resistant housing make it suitable for commercial pool installations where durability and sustained performance are essential. The TEFC motor design provides added protection in harsh equipment room environments.

🛁 Pool & Spa Combinations

Compatible with all cleaning systems, various filter types, and jet action spas, the WhisperFlo provides versatile performance for combined pool and spa systems that require consistent flow at a fixed speed.

💡 Cost Savings Examples

📍 Scenario 1: Replacing a Failed Pre-DOE WhisperFlo (011513)

When your old WhisperFlo 011513 fails, the 015583 is the direct DOE-compliant replacement. You’ll benefit from:

• ✅ NEMA Premium Efficient motor (improved energy efficiency)
• ✅ Better motor protection (TEFC vs. standard open motors)
• ✅ Extended motor life expectancy
• ✅ DOE regulatory compliance
• ✅ Zero plumbing modifications required (drop-in replacement)
• ⏱️ Minimal downtime – same footprint and connections

📍 Scenario 2: Cost of Ownership – WhisperFlo vs. Variable Speed

For budget-conscious pool owners weighing their options:

At US national average electricity rates ($0.1778/kWh) with 8 hours/day, 180-day seasonal use:

Metric	WhisperFlo 015583 (Single-Speed)	Variable Speed Pump (Low-Speed Filtration)
Estimated Annual Power Use	~1,728 kWh	~432 kWh*
✅ Annual Operating Cost	$307.24	$76.81*
💰 Annual Difference	—	Saves ~$230/year*
Purchase Price	Lower upfront cost	Higher upfront cost

*Variable speed estimates based on typical low-speed filtration (~300W average). Actual savings vary by pump model, pool size, and usage patterns.

⚠️ The Bottom Line: The WhisperFlo 015583 has a lower purchase price, making it a smart choice when budget is the primary concern, for dedicated water feature pumps, or when a single-speed pump is the most practical option. For long-term energy savings on pool filtration, a variable speed pump typically pays for itself within 2-3 years.

📥 Downloads & Resources

📄 WhisperFlo & SuperFlo Single-Speed Pump Brochure (PDF) – Official Pentair brochure with specifications for DOE-compliant models (P1-252 03/21)

📄 WhisperFlo Owner’s Manual – (PDF) – Complete installation and user guide for 2021+ DOE-compliant models

🏆 Why Choose the Pentair WhisperFlo 015583?

✅ Industry’s Best-Selling Pump Design – Over 2 million Pentair pumps selected by pool professionals, backed by 40+ years of hydraulic engineering refinement

✅ DOE Compliant with NEMA Premium® Efficient Motor – The first and only single-speed pump with NEMA Premium motor technology, delivering maximum efficiency for a single-speed design

✅ Whisper-Quiet Performance – Advanced FunnelFlo™ diffuser and precision-balanced flow path minimize noise and vibration for peaceful pool operation

✅ Built to Last – Commercial-grade motor frame, stainless steel shaft, sealed bearings, and corrosion-resistant thermoplastic housing engineered for years of reliable service

✅ Easy Maintenance – Cam and Ramp™ see-through lid provides tool-free strainer basket access with a simple quarter-turn, and the oversized basket extends time between cleanings

✅ Versatile Installation – Dual voltage (115/208-230V), 2″ NPT ports, and compatibility with all cleaning systems, filters, and spa jets make it adaptable to virtually any pool system

🛒 Why Buy From Parts4Tubs?

✅ Fast Shipping Across the USA – Get your WhisperFlo pump delivered quickly to minimize pool downtime

✅ Expert Customer Support – Real pool and spa professionals available to answer your technical questions about compatibility and installation

✅ Competitive Pricing – Fair, transparent prices with no hidden fees or surprise charges

✅ Hassle-Free Returns – Easy return process backed by our commitment to your satisfaction

✅ Trusted by Thousands – American pool and spa owners count on Parts4Tubs for genuine, quality equipment

✅ Secure Checkout – Shop confidently with Visa, Mastercard, American Express, PayPal, Apple Pay, and Google Pay

✨ Summary

The Pentair WhisperFlo® 015583 brings DOE-compliant efficiency to the pool industry’s most trusted single-speed pump platform. With its NEMA Premium® Efficient TEFC motor, legendary quiet operation, and rock-solid commercial-grade construction, it’s the smart choice for pool owners who need a reliable single-speed solution that meets today’s efficiency standards. Whether you’re replacing an older WhisperFlo model or outfitting a new installation, the 015583 delivers Pentair’s proven performance with modern energy efficiency.

Order the Pentair WhisperFlo 015583 today and experience the pump that’s been the industry standard for over 40 years – now better than ever! 💪