Product Information
Description
Jandy JXi 400K Heat Exchanger and Header Assembly - R0805805 Genuine Replacement
The Jandy R0805805 Heat Exchanger and Header Assembly is the factory replacement heat-transfer core for 400,000 BTU Jandy JXi gas heaters. Built to restore peak heating performance and combustion efficiency, this complete assembly pairs a new heat exchanger with a matched header, making it the go-to repair when corrosion, scale, or impact damage compromises your original unit.
Key Features:
- OEM Jandy Replacement: Engineered to exact factory tolerances for a precise fit in JXi 400K series heaters.
- Complete Assembly: Includes both the heat exchanger and header together, simplifying installation and ensuring matched components.
- Natural Gas & LP Ready: Labeled for Natural Gas service with included labels for conversion use on LP Gas heaters.
- Heavy-Duty Construction: Robust 65-pound build is designed for reliable, long-term heat transfer performance.
- Broad JXi Compatibility: Fits JXI400N, JXI400NK, JXI400P, and JXI400PK heater models.
Technical Specifications:
- Part Number (MPN): R0805805
- UPC: 052337078191
- BTU Rating: 400,000 BTU
- Weight: Approximately 65 lbs
- Fuel Compatibility: Natural Gas (with LP conversion labels included)
- Fits Models: Jandy JXI400N, JXI400NK, JXI400P, JXI400PK
- Assembly Includes: Heat exchanger and header (burner not included)
- Product Type: Heat Exchanger Assembly
Additional Info
| Category | Parts Pool Parts Pool Heater Parts |
| SKU | PST-R0805805 |
| MPN | R0805805 |
| Manufacturer | Jandy |
| Weight | 71.0 lb |
Let customers speak for us
Item was lost by postal service and PST sent new one within 72 hours so we could open the pool. Communication very good. Thank you so much!
Thanks, I’ll be sending it back for a return. The switch was too long and didn’t match OEM.
Excellent product, cleans debri with ease
The part was delivered quickly, there was an issue with the gauge being damaged but customer service resolved quickly!
Easy to use. Great instructions. Cleans great so far.
Easy to order - received the next day!
Beautiful!!
The valve fit perfectly and works great.
Fast shipping and great price!
Does what a small weed- eater would do it minutes versus an hour
Great product does exactly what was advertised to do.
I ordered the wrong part. Customer service was very helpful. I returned it and within the week my credit card was credited back. Excellent customer service policy.