Raypak AVIA 404A
The best rounded in-ground pool heater here for most owners: efficient, low NOx and app controlled with a longer warranty, if bought from an authorized dealer.
Amazon $4,426$4,426
The Raypak AVIA 404A is the better gas pool heater overall, rated 4.4 to 3.5. The Raypak AVIA 404A leads on value. The Raypak AVIA 404A costs $874 less ($4,426 vs $5,300).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Jandy JXi 400
For a large in-ground pool on Jandy automation where a compact, light cabinet matters more than price.
Amazon $5,300$5,300
Which should you buy?
- Choose the Raypak AVIA 404A for value ($11.09 per 1,000 BTU/h ($4,426, 399,000 BTU/h) vs $13.28 per 1,000 BTU/h ($5,300, 399,000 BTU/h)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 250,000 BTU and up gas pool heater; a clear win is highlighted. How we rank explains each one.
| Factor weight | Raypak AVIA 404A | Jandy JXi 400 |
|---|---|---|
| Overall rating | 4.4/5 | 3.5/5 |
| Value 35% | 74 $11.09 per 1,000 BTU/h ($4,426, 399,000 BTU/h) | 51 $13.28 per 1,000 BTU/h ($5,300, 399,000 BTU/h) |
| Heating input 25% | 99 399,000 BTU/h | 99 399,000 BTU/h |
| Efficiency 20% | 67 84% thermal efficiency | 67 84% thermal efficiency |
| Warranty 20% | 100 3-year warranty | 0 warranty not published, scored as none |
Specifications
| Raypak AVIA 404A | Jandy JXi 400 | |
|---|---|---|
| Heating | ||
| Gas input | 399,000 BTU/h | 399,000 BTU/h |
| Gas type | Natural gas or propane | Natural gas or propane |
| Thermal efficiency | 84% | 84% |
| Condensing | No | No |
| Low NOx | Yes | Yes |
| Heat exchanger | Copper | Copper |
| Max water flow | 100 GPM | 100 GPM |
| Installation and controls | ||
| Ignition | Electronic | Electronic |
| Venting | Both | Both |
| Digital controls | Yes | Yes |
| Automation or app | Yes | Yes |
| Weight | - | 126 lb |
| Warranty | 3 years | - |