Raypak Crosswind V Standard Pool/Spa Pool Heat Pump 85K BTU TWPH-4550EHT08 (Heat Only)

The TWPH-4550EHT08 is Raypak's entry point in the Crosswind V series - a vertical-discharge pool heat pump for in-ground and above-ground pools and spas rated at 85,000 BTU/hr. It runs on 208/230V single-phase power, uses a 4-turn titanium heat exchanger, and includes built-in WiFi with the Raymote app for remote temperature control and real-time diagnostics. At a COP of 5.8, it delivers 5.8 units of heat for every unit of electricity consumed - significantly more efficient than gas heating in moderate to warm climates. Well matched for pools up to around 20,000 gallons in warm climates. TWPH-4550EHT08 Crosswind V Standard Specs and Key Features The TWPH-4550EHT08 runs on 208/230V single-phase, 60 Hz power with a 60-amp recommended breaker and 50-amp minimum circuit ampacity. Water flow range is 20 to 60 GPM - notably higher on the upper end than many comparable heat pumps, which makes it compatible with variable speed pump setups without flow restrictions on most residential systems. The unit weighs 247 lb and connects via industry-standard 2" water connections accessible through the front panel, which simplifies both installation and future service access. TWPH-4550EHT08 Raymote WiFi and VS Pump Control Unlike earlier heat pump platforms that require separate automation accessories, the Crosswind V includes built-in WiFi and Raymote app connectivity out of the box. From the app you can monitor temperature, adjust settings, and receive real-time service alerts from anywhere. The unit also includes variable speed pump control - it can drive most major VS pump brands directly without additional controllers - plus connections for two actuators and three auxiliary devices. For installers, this significantly reduces the equipment needed on a new pad build. Heat Source Delegation - Pairing the TWPH-4550EHT08 with a Gas Heater The Crosswind V platform includes patent-pending Intelligent Performance Calculations that allow the unit to coordinate with a secondary heat source - a gas heater, another heat pump, or an electric heater. When paired with a Raypak AVIA gas heater, the system automatically determines which heat source is most efficient given current conditions and delegates accordingly. In mild weather a heat pump is the lower-cost option; when temperatures drop and heat pump efficiency falls, the system hands off to gas. For year-round pools in climates with cold winters, this combination delivers both efficiency and reliability without manual intervention. Crosswind V TWPH-4550EHT08 - Pool Size and Climate Fit At 85,000 BTU/hr, the TWPH-4550EHT08 is well matched for pools up to around 20,000 gallons in warm climates like Florida, Texas, the Gulf Coast, and the Southwest. In cooler climates - the mid-Atlantic, Carolinas, or Pacific Northwest - a more realistic estimate is 15,000 gallons. Like all air-source heat pumps, efficiency drops as ambient temperature falls; this unit operates most effectively above 50 degrees F. For larger pools, the Crosswind V lineup scales up through the TWPH-5550EHT08 at 95K BTU, the TWPH-6550EHT08 at 110K BTU, and the TWPH-8550EHT08 at 130K BTU. For pools that also need cooling, see the Crosswind V Deluxe heat and cool models. 4-Turn Titanium Heat Exchanger The TWPH-4550EHT08 uses a 4-turn titanium heat exchanger - more passes through the coil than a straight-tube design, which increases the contact time between refrigerant and pool water for more efficient heat transfer. Titanium resists corrosion from chlorine, salt water, and bromine, making it a durable long-term choice for salt chlorine generator pools and coastal installations where standard copper heat exchangers tend to degrade faster. Full Specifications - Raypak Crosswind V Standard TWPH-4550EHT08 Specification Detail Model Number TWPH-4550EHT08 Brand Raypak Product Line Crosswind V Standard BTU Output 85,000 BTU/hr Operation Heat Only Pool Size (Warm Climate) Up to 20,000 gallons COP 5.8 Compressor Type Scroll (6.9 HP) Heat Exchanger 4-turn titanium Discharge Type Vertical (top discharge) Voltage 208/230V Phase Single Frequency 60 Hz Minimum Circuit Ampacity 50A Recommended Breaker Size 60A Min Water Flow 20 GPM Max Water Flow 60 GPM Refrigerant R-410A Weight 247 lb Plumbing Connections 2" (front panel access) WiFi Built-in (Raymote app) VS Pump Control Yes Compatible Pool Types In-ground, Above Ground, Spa Water Chemistry Compatibility Chlorine, Salt Water, Bromine Parts Warranty 2 years Labor Warranty 1 year Frequently Asked Questions - Raypak TWPH-4550EHT08 What size pool can the TWPH-4550EHT08 heat? At 85,000 BTU/hr, this unit is well matched for pools up to around 20,000 gallons in warm climates. In cooler climates, a more realistic estimate is 15,000 gallons. If you are between sizes, sizing up is almost always the right call - a slightly larger unit runs less frequently, uses less electricity over time, and has a longer compressor lifespan. Not sure which model fits your pool? Contact us and we will help you figure it out before you buy. Does this model heat only, or does it also cool? Heat only. The TWPH-4550EHT08 is a standard heating unit. If you need cooling capability - useful in Florida and other warm climates where pool water can climb into the 90s in summer - look at the Crosswind V Deluxe heat and cool models instead. What electrical service does the TWPH-4550EHT08 require? The unit runs on 208/230V single-phase, 60 Hz power. Minimum circuit ampacity is 50 amps; recommended breaker size is 60 amps. A licensed electrician should handle the electrical connection and confirm your panel can support the required circuit before installation. Does this heat pump work with a variable speed pool pump? Yes. The Crosswind V includes built-in variable speed pump control and is compatible with most major VS pump brands without additional controllers. The 20 to 60 GPM flow range also accommodates the lower flow rates typical of VS pumps running at reduced speeds. An optional bypass valve kit is available for setups where flow might exceed 60 GPM. What is the Raymote app and do I need extra hardware? Raymote is Raypak's mobile app for remote pool temperature control, scheduling, and real-time diagnostics. The TWPH-4550EHT08 includes built-in WiFi - no separate gateway or module needed. Once connected, you can monitor and adjust the unit from your phone from anywhere. TWPH-4550EHT08 Manual and Warranty Information The Raypak TWPH-4550EHT08 is part of the Crosswind V heat-only series. The official Installation and Operation Manual covers installation, operation, maintenance, troubleshooting, wiring, and control setup for Crosswind V model 4550. The official Raypak warranty provides 2 years of labor and 7 years of parts, with the titanium tube component of the titanium heat exchanger warranted for 10 years for parts only and 2 years for labor. For full product details, features, and document access, review the links below. Raypak Crosswind V Warranty (PDF) Raypak Crosswind V Brochure (PDF) Raypak Crosswind V Installation and Operation Manual (PDF)