A pool that's swum most of the year where steady, low-cost heat matters more than fast heat-up.
★★★★★ 230+ Google Reviews · CPO C-105377 · 40+ years of combined founder experience
Sizing comes first.The right heater is set by your pool's surface area and the temperature rise you want, and by the flow your pump and plumbing deliver. Start with the heater size calculator; we confirm it on site before quoting.
Our own score for what saves you money and headaches in South Florida.
HE125-RA
4.4
out of 5
From the manufacturer's documents listed under Sources. Where the documents disagree, the table says so.
| Heating capacity | 118,000 BTU/hr at 80°F air / 80°F water / 80% RH |
|---|---|
| COP | 6.0 at 80/80/80; manufacturer states all models meet or exceed COP 4.0 at the AHRI low (50/63/80) test point |
| Heat or heat and cool | Heat only (RA); the HE125-TA is the reverse-cycle version |
| Heat exchanger | Titanium, 2-inch full-flow |
| Cabinet | UV-stabilized ABS, no rust |
| Electrical | 208-230V, 1 phase, 60 Hz |
| Minimum circuit amps / maximum breaker | 37 A minimum circuit amps, 50 A maximum breaker |
| Water connections | 2" unions |
| Water flow | 30 GPM minimum, 70 GPM maximum, 45-50 GPM optimal |
| Clearances | 12" each side, 4 ft above; outdoor installation only |
| Operating temperature | Defrost cycle below 48°F ambient; will not operate below 35°F |
| Condensate | Up to 3 gallons per hour per the owner's manual |
| Dimensions and weight | 31 x 31 x 46 in, 237 lb |
| AHRI rating | Rated at the AHRI 80/80/80 point; the spec sheet states all models meet or exceed COP 4.0 at the AHRI low (50/63/80) test point |
| Manufactured in | North Fort Myers, Florida (G&F Manufacturing) |
| Controls and automation | Digital LCD display with plain-language status and fault messages, dual pool/spa thermostats, keypad lockout, spa timer and multi-language menus; automation through dry-contact remote thermostat terminals. No RS-485 connection, no published app or Wi-Fi control. |
Parts
7 years
Labor
2 years
Heat exchanger
Under the parts term
| Parts | 7 years |
|---|---|
| Labor | 2 years |
These are the manufacturer's published terms. Terms can depend on the installer, the dealer program and where the heater was bought, and they change without notice, so we confirm the exact term for your install on the written quote.
Titanium doesn't corrode in pool water, so it's the standard on quality heat pumps and the reason a heat pump can sit on a salt pool for years without exchanger trouble. It costs more, which is why it's rare on gas heaters, and the ETi 400 is the exception here.
See every material side by side on the comparison page.
Most to least forgiving of salt and unbalanced water.
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Onboard controls only
Every figure on this page comes from these manufacturer documents. We re-open each one and match the model number, capacity and efficiency before the date moves. How we verify.
| Document | Type | Last checked |
|---|---|---|
| Pentair / GulfStream — HE125-RA SKU pagepentair.com | Product page | October 14, 2026 |
| Pentair — GulfStream Heat Pumps product page (model table: BTU, COP, heat-only vs heat/cool)pentair.com | Product page | October 14, 2026 |
| GulfStream Heat Pumps — HE Series spec sheet (capacity, COP, amps, breaker, flow, dimensions)pentair.com | Spec sheet or brochure | October 14, 2026 |
| GulfStream Heat Pumps — sell sheet (7 year parts / 2 year labor, no trip charges)pentair.com | Spec sheet or brochure | October 14, 2026 |
| GulfStream Heat Pumps — Installation and User Guide (clearances, flow, plumbing order, defrost, automation, water chemistry)pentair.com | Manual or guide | October 14, 2026 |
| GulfStream Heat Pumps — Installation Manual (G&F Manufacturing, North Fort Myers FL; dry-contact wiring; enclosed-space warning)pentair.com | Manual or guide | October 14, 2026 |
| Pentair — pool product warranty information (cross-brand warranty table listing GulfStream)pentair.com | Warranty terms | October 14, 2026 |
Manufacturers revise terms without notice. Treat this page as a starting point and confirm the current terms before you buy. If something here is out of date, tell us and we'll fix it.
Parts: 7 years. Labor: 2 years. These are the manufacturer's terms as published; warranty terms change and can depend on the installer and the channel, so we confirm the exact term for your install on the written quote.
The HE125-RA is rated at 118,000 BTU/hr heating output. Heater size comes from your pool's surface area and the temperature rise you want, not from gallons, and the pump and plumbing have to deliver the flow the heater needs. Use our heater size calculator for a starting number, and we confirm it on site before quoting.
Not directly. The HE125-RA connects to pool automation through a relay, and the heater has no app of its own.
Titanium doesn't corrode in pool water, so it's the standard on quality heat pumps and the reason a heat pump can sit on a salt pool for years without exchanger trouble. It costs more, which is why it's rare on gas heaters, and the ETi 400 is the exception here.
Every figure on this page comes from the manufacturer's own documents, listed under Sources with the date we last checked them. Manufacturers revise terms without notice, so treat the page as a starting point and confirm the current terms on your quote.
We quote, install and service GulfStream heaters across Palm Beach and Broward, managed by us under our Florida Certified Pool/Spa Contractor license (CPC1461731). You get a free on-site sizing visit and one written price. Gas lines, new circuits and refrigerant work are done by licensed contractors we manage.
We call back within 30 minutes during business hours.
