A pool that's used most of the year and could use a chill option in late summer, with steady, low-cost heat the rest of the time.
★★★★★ 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.
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UltraTemp 140 H/C
Pending
From the manufacturer's documents listed under Sources. Where the documents disagree, the table says so.
| Manufacturer model | UltraTemp 140 H/C — P/N 460959 (black), P/N 460958 (almond). Pentair also lists a UT140 H/C Active Defrost variant, P/N 462032. |
|---|---|
| Heating capacity | 140,000 BTU/hr at 80°F air / 80% RH / 80°F water (AHRI Standard 1160) |
| Cooling capacity | 71,000 BTU/hr at 80°F air / 80% RH / 80°F water, COP 4.1 |
| COP | 5.6 at 80/80/80; 5.4 at 80°F air / 63% RH / 80°F water; 4.0 at 50°F air / 63% RH / 80°F water |
| Heat exchanger | 100% titanium; lifetime heat exchanger warranty |
| Cabinet | Long-life corrosion-resistant composite |
| Refrigerant and compressor | R-410A, non-ozone-depleting; scroll compressor with thermostatic expansion valve (TXV) |
| Electrical | 208-230 V, 1 phase, 60 Hz; minimum circuit ampacity 43 A, recommended fuse 50 A, maximum fuse/breaker 70 A. Voltage below 208 V may damage the unit and void the warranty. |
| Water connections | 2" PVC unions |
| Water flow | 30 GPM minimum, 120 GPM maximum (bypass required above 120 GPM); 50 psi maximum working water pressure |
| Clearances | 24" service access at the front, 12" on all other sides, 5 ft clear above if under a cover or overhang, 6" from the house wall, 5 ft from the inside wall of the pool or spa unless separated by a 5 ft barrier. Outdoor use only. |
| Operating limits | Will not heat above 104°F or cool below 45°F. May enter a defrost cycle around 50°F air; if the defrost stop temperature is not reached within 15 minutes the unit shuts down and displays a Low Ambient Temp alarm. |
| Certification | AHRI certified to Standard 1160; ETL listed; CEC listed for California Title 20 |
| Dimensions and weight | 38.7" x 30.7" x 45.5" per the Heat Pump Dimensions table in the installation guide; 320 lb shipping weight and a 43" x 34" x 46" shipping size (the 2025-2026 catalog lists a 344 lb carton weight for the same part numbers, a Pentair-internal conflict) |
| Water chemistry limits | Free chlorine 1.0-3.0 ppm, pH 7.4-7.6, total alkalinity 80-100 ppm (100-120 ppm with dichlor, trichlor, chlorine gas or bromine), calcium hardness 200-400 ppm, cyanuric acid 30-50 ppm, TDS under 2,000 ppm, copper 0 ppm. Pentair states that failing to hold these may void the warranty. |
| Controls and automation | LCD control board with full-word messages instead of numeric codes; independent pool and spa setpoints; heat, cool and auto modes; run timer; keypad lockout. RS-485 serial control with IntelliTouch or EasyTouch on software 1.11 or higher; all other automation packages use the relay remote dry-contact terminals, which is also how Pentair's IntelliConnect guide wires a heat pump. |
Parts
2 years
Labor
2 years
Heat exchanger
Lifetime (limited)
| Parts | 2 years |
|---|---|
| Labor | 2 years |
| Compressor | 10 years parts and labor |
| Heat exchanger | Lifetime on the titanium heat exchanger |
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, or read the Pentair UltraTemp alarm messages guide for what the display is telling you.
Most to least forgiving of salt and unbalanced water.
Raypak · Crosswind V
A pool that's used most of the year and could use a chill option in late summer, with steady, low-cost heat the rest of the time.
Built-in Wi-Fi
Hayward · HeatPro MCHX
A pool that's used most of the year and could use a chill option in late summer, with steady, low-cost heat the rest of the time.
Automation relay (no heater app)
GulfStream · HE Series
A pool that's used most of the year and could use a chill option in late summer, with steady, low-cost heat the rest of the time.
Automation relay (no heater app)
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.
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: 2 years. Labor: 2 years. Compressor: 10 years parts and labor. Heat exchanger: Lifetime on the titanium heat exchanger. 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 UltraTemp 140 H/C is rated at 140,000 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 UltraTemp 140 H/C 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 Pentair 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.
