Raypak Crosswind V Standard Pool/Spa Pool Heat Pump 138K BTU TWPH-8550EHT08

The TWPH-8550EHT08 is the top output model in Raypak's Crosswind V Standard series - a vertical-discharge pool heat pump for in-ground and above-ground pools and spas rated at 138,000 BTU/hr. It runs on 208/230V single-phase power, uses a 6-turn titanium heat exchanger with a double-row coil, and includes built-in WiFi with the Raymote app for remote temperature control and real-time diagnostics. At a COP of 6.0, it produces 6.0 units of heat for every unit of electricity consumed. Well matched for pools up to around 35,000 gallons in warm climates, and the strongest single-phase heat pump option in the Crosswind V residential lineup. TWPH-8550EHT08 Crosswind V Standard - Specs and Key Features The TWPH-8550EHT08 runs on 208/230V single-phase, 60 Hz power with a 70-amp recommended breaker and 60-amp minimum circuit ampacity. Water flow range is 20 to 60 GPM, compatible with variable speed pump setups on most residential systems. The unit weighs 312 lb - noticeably heavier than the smaller Crosswind V models - due to the larger 6-turn double-row coil and 10.45 HP compressor. Water connections are industry-standard 2" accessible through the front panel. 6-Turn Double-Row Titanium Heat Exchanger The TWPH-8550EHT08 is the only Crosswind V Standard model with a double-row coil - 16 circuits vs. the 9-circuit single-row design in the 5550 and 6550. More circuits and a second coil row means significantly more contact area between refrigerant and pool water, which is how this unit achieves 138,000 BTU/hr at a high COP on single-phase residential power. Titanium construction resists corrosion from chlorine, salt water, and bromine throughout the life of the unit. TWPH-8550EHT08 Raymote WiFi and VS Pump Control The TWPH-8550EHT08 includes built-in WiFi and Raymote app connectivity out of the box - no separate module or gateway needed. From the app you can monitor temperature, adjust settings, and receive real-time service alerts remotely. The unit also includes variable speed pump control, driving most major VS pump brands directly without additional controllers, plus connections for two actuators and three auxiliary devices. Heat Source Delegation - Pairing the TWPH-8550EHT08 with a Gas Heater Like all Crosswind V models, the TWPH-8550EHT08 includes patent-pending Intelligent Performance Calculations that allow it to coordinate with a secondary heat source. When paired with a Raypak AVIA gas heater, the system automatically selects the most efficient heat source based on current conditions - heat pump in mild weather when efficiency is high, gas when ambient temperatures drop and heat pump output falls. For large pools in climates with cold winters, this combination delivers both efficiency and reliability without any manual switching. Crosswind V TWPH-8550EHT08 - Pool Size and Climate Fit At 138,000 BTU/hr, the TWPH-8550EHT08 is well matched for pools up to around 35,000 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 27,000 to 30,000 gallons. Like all air-source heat pumps, efficiency drops as ambient temperature falls; this unit operates most effectively above 50 degrees F. For pools that also need cooling, see the Crosswind V Deluxe TWPH-8550EHC08, which offers comparable heating output with active cooling capability. If you need less output, the lineup steps down through the TWPH-6550EHT08 at 118K BTU, the TWPH-5550EHT08 at 102K BTU, and the TWPH-4550EHT08 at 85K BTU. Full Specifications - Raypak Crosswind V Standard TWPH-8550EHT08 Specification Detail Model Number TWPH-8550EHT08 Brand Raypak Product Line Crosswind V Standard BTU Output 138,000 BTU/hr Operation Heat Only Pool Size (Warm Climate) Up to 35,000 gallons COP 6.0 Compressor Type Scroll (10.45 HP) Heat Exchanger 6-turn titanium, 16 circuits, double-row coil Discharge Type Vertical (top discharge) Voltage 208/230V Phase Single Frequency 60 Hz Electrical Input 6.6 kW Minimum Circuit Ampacity 60A Recommended Breaker Size 70A Min Water Flow 20 GPM Max Water Flow 60 GPM Refrigerant R-410A Weight 312 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-8550EHT08 What size pool can the TWPH-8550EHT08 heat? At 138,000 BTU/hr, this unit is well matched for pools up to around 35,000 gallons in warm climates. In cooler climates, size it for pools up to around 27,000 to 30,000 gallons. When in doubt, 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-8550EHT08 is a standard heating unit. The "EHT" designation in the model number indicates electric heat, top discharge - no cooling capability. If you need cooling, see the Crosswind V Deluxe TWPH-8550EHC08, which pairs comparable heating output with active chilling for pools that get too warm in summer. What electrical service does the TWPH-8550EHT08 require? The unit runs on 208/230V single-phase, 60 Hz power. Minimum circuit ampacity is 60 amps; recommended breaker size is 70 amps. At 6.6 kW input this is the highest draw in the Crosswind V Standard lineup - confirm your panel can support the required circuit before ordering. A licensed electrician should handle the electrical connection. How does the TWPH-8550EHT08 compare to the other Crosswind V Standard models? The 8550 is the largest and heaviest model in the Crosswind V Standard range at 312 lb vs. 268 lb for the 5550 and 6550. The key structural difference is the heat exchanger - the 8550 uses a 6-turn double-row coil with 16 circuits, compared to the 5-turn single-row designs in the smaller models. This gives it significantly more heat transfer surface area and enables the higher BTU output at a COP of 6.0. The 8550 also draws 6.6 kW vs. 5.4 kW for the 6550 and 4.8 kW for the 5550. Does this heat pump work with a variable speed pool pump? Yes. The Crosswind V includes built-in variable speed pump control compatible with most major VS pump brands without additional controllers. The 20 to 60 GPM flow range 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 otherwise exceed 60 GPM. TWPH-8550EHT08 Manual and Warranty Information The Raypak TWPH-8550EHT08 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 8550. 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)