Pentair MasterTemp 125
A compact, light heater for spas and above-ground pools, best for owners with Pentair automation.
Amazon $2,098$2,098
The Pentair MasterTemp 125 is the better gas pool heater overall, rated 2.6 to 2.4. The Pentair MasterTemp 125 leads on value and heating input. The Raypak 106A wins on warranty. The Pentair MasterTemp 125 costs $21 less ($2,098 vs $2,119).
$2,119
Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Pentair MasterTemp 125 for value ($16.78 per 1,000 BTU/h ($2,098, 125,000 BTU/h) vs $20.18 per 1,000 BTU/h ($2,119, 105,000 BTU/h)) and heating input (125,000 BTU/h vs 105,000 BTU/h).
- Choose the Raypak 106A for warranty (2-year warranty vs 1-year warranty).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every under 250,000 BTU gas pool heater; a clear win is highlighted. How we rank explains each one.
| Factor weight | Pentair MasterTemp 125 | Raypak 106A |
|---|---|---|
| Overall rating | 2.6/5 | 2.4/5 |
| Value 35% | 52 $16.78 per 1,000 BTU/h ($2,098, 125,000 BTU/h) | 25 $20.18 per 1,000 BTU/h ($2,119, 105,000 BTU/h) |
| Heating input 25% | 25 125,000 BTU/h | 5 105,000 BTU/h |
| Efficiency 20% | 33 82% thermal efficiency | 33 82% thermal efficiency |
| Warranty 20% | 0 1-year warranty | 50 2-year warranty |
Specifications
| Pentair MasterTemp 125 | Raypak 106A | |
|---|---|---|
| Heating | ||
| Gas input | 125,000 BTU/h | 105,000 BTU/h |
| Gas type | Natural gas or propane | Natural gas or propane |
| Thermal efficiency | 82% | 82% |
| Condensing | No | No |
| Low NOx | Yes | No |
| Heat exchanger | - | Copper |
| Max water flow | 70 GPM | 70 GPM |
| Installation and controls | ||
| Ignition | - | Electronic |
| Venting | Both | Both |
| Digital controls | Yes | No |
| Automation or app | Yes | - |
| Weight | 80 lb | - |
| Warranty | 1 year | 2 years |