◎ Luxury pools, ponds & waterscapes, nationwide
Heaters & Chillers Review

Pentair UltraTemp Heat Pump Review

An efficient, quiet electric heat pump for steady, season-extending warmth at a low running cost. The economical way to heat a pool long-term.

★★★★★ 4.7 / 5 WETYR Pools editorial review
Pentair · Electric pool heat pump

The verdict in brief

The Pentair UltraTemp is an electric heat pump for pools, and it represents the efficient, modern answer to the heating question. Rather than burning fuel, it moves heat from the surrounding air into the pool water, which makes it inexpensive to run and well suited to extending the swim season over the long term.

Best for: Owners who want efficient, low-cost, season-extending pool heat and can heat gradually.

Visit Pentair

Overview

A heat pump does not generate heat; it relocates it. The UltraTemp draws warmth out of the surrounding air and transfers it into the pool water, using electricity only to run the process rather than to create the heat directly. Because moving heat takes far less energy than making it, a heat pump is highly efficient, which is the entire reason to choose one.

The UltraTemp is engineered for a long outdoor life and quiet operation, and it carries the Pentair name, automation compatibility, and support network. For an owner whose priority is comfortable water at a sensible running cost, it is a strong, well-proven choice.

Who it is for

The UltraTemp suits the owner who wants to extend the swim season and keep the pool comfortable at the lowest practical running cost, and who is happy for the pool to heat gradually rather than on demand. A heat pump warms a pool steadily over hours, not minutes, and for season-extending pool heat that is exactly the right behavior.

It is the natural choice in a climate with mild and warm air, because a heat pump works by harvesting warmth from the air and is most effective when there is warmth in the air to harvest. For the large number of pools in warm regions, the UltraTemp is the efficient, sensible primary heater.

What it does well

Efficiency is the UltraTemp's defining strength. Because it moves heat rather than burning fuel, its running cost is a fraction of what a gas heater costs to deliver the same warmth, and that gap recurs every hour the heater runs, for the life of the equipment. For an owner who wants to actually use a heated pool freely rather than ration it against a fuel bill, that changes everything.

It is also quiet, durable, and able to integrate with pool automation so heating can be scheduled and managed as part of the whole pool. Paired with a pool cover to hold the heat in overnight, an UltraTemp delivers comfortable, season-extending water economically and reliably.

What to know before buying

A heat pump's nature sets its limits, and they should be understood up front. It heats gradually, so it is not the tool for warming a pool, or especially a spa, quickly on demand. And because it harvests heat from the air, its effectiveness falls as air temperature drops; on a genuinely cold day a heat pump works harder and slower. For steady pool heating in a warm climate, neither limit is a problem; for instant spa heat or cold-weather performance, a gas heater is the better tool.

As with all heating equipment, the UltraTemp must be correctly sized to the pool, and its economics improve dramatically when it is paired with a cover. A heat pump heating an uncovered pool is fighting a constant overnight heat loss it should not have to.

How WETYR Pools installs and services it

WETYR Pools sizes, installs, and services Pentair heating equipment, including the UltraTemp, as part of our equipment work. We help you decide honestly whether a heat pump or a gas heater suits how you actually want to use the pool and spa, and we size the unit correctly to the pool.

We also design solar pool heating, the lowest running cost of all, and a heat pump and solar pair extremely well. Integrated with automation and a cover, an UltraTemp becomes a quiet, efficient, season-extending heater that you can use without watching a meter.

The Balance

Pros and cons

What we like

  • Very low running cost compared with gas heating
  • Efficient season-extending warmth
  • Quiet, durable, automation-compatible
  • Pairs well with a cover and with solar heating

What to weigh

  • Heats gradually, not instantly on demand
  • Effectiveness falls as air temperature drops
  • Higher purchase price than a basic gas heater
At a Glance

Pentair UltraTemp Heat Pump specifications

Type Electric pool heat pump
Heating method Moves heat from the air into the water
Best use Efficient, steady, season-extending pool heat in warm climates
Automation Compatible with Pentair automation systems
Efficiency Heat pumps are highly efficient, many are ENERGY STAR certified, see energystar.gov

Specifications are general guidance. Confirm current details with Pentair before purchase.

WETYR Pools Can Help

Installed and serviced by one accountable team

WETYR Pools sizes, installs, and services pool equipment as part of our craftsman-led service work. The right product, installed correctly, is what delivers the result.

Questions Answered

Pentair UltraTemp Heat Pump FAQ

How does a pool heat pump work?+

A heat pump does not create heat. It draws warmth out of the surrounding air and transfers it into the pool water, using electricity only to run the process. Because moving heat takes far less energy than making it, a heat pump is highly efficient and cheap to run.

Is a heat pump cheaper to run than a gas heater?+

Yes, considerably. Because it moves heat rather than burning fuel, a heat pump's running cost is a fraction of a gas heater's for the same warmth, and that saving recurs every hour it runs. Its trade-off is that it heats gradually rather than on demand.

Does the Pentair UltraTemp work in cold weather?+

A heat pump harvests heat from the air, so its effectiveness falls as air temperature drops. In a warm climate it is an excellent, efficient pool heater. For instant heat or genuinely cold conditions, a gas heater is the better tool.

Should I pair a heat pump with a pool cover?+

Yes. A cover holds heat in overnight, so the heat pump works far less to maintain temperature. Heating an uncovered pool means heating water and then letting much of that heat escape into the night air.

Compare

Other heaters & chillers reviews

Heaters & Chillers

The right equipment, installed right

Talk to WETYR Pools about the best heaters & chillers for your pool, supplied, sized, and installed by one accountable team.