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Pentair Mastertemp 400k Btu Pool Heater Propane Review

September 22, 2021 By reviewexpert12321

Pool systems are complex and you cannot say that this pool cleaner is best and that one is not. We have researched on many pool heaters and found Pentair mastertemp is a powerful natural gas heater. Hayward and Pentair are the top 2 brands for manufacturing pool heaters. Pentair is a brand which delivers quality products. It is a global company that focus on water and fluid solutions, valves and controls, and equipment protection. Pentair mastertemp 400 is a long lasting, energy efficient and reliable natural gas pool heater for homeowners. It has a user-friendly rotating digital display that makes it easy to operate and monitor. It is ultra-quiet as compared to other models. Its control panel displays the water temperature and five led lights show you the system status.

Pentair Master Temp

POOL HEATER / SPECSPentair Master Temp
Brand Pentair MasterTemp
Model Number 460737
Manufacturer Pentair

Dimensions 36 x 25 x 30 inches
Weight 128 pounds
Pool Size Large sized pool
Specific pool water type Suitable for saltwater pools + all pool types
Installation Not to difficult to install
Electrical Rating 60 Hz120 / 240 Volts AC, single phase.
Heat output 400,000 BTU
Pool type
Spa/ hot tub
Heat exchanger Cupro-Nickel heat exchanger

Fuel type Propane gas
Controls
Digital
Ignition Electronic
Emission Low Nox
Maximum water flow rate
40 GPM
Pool water heating rate Heats up the water extremely fast
Automatic shut-off To prevent overheating
Heater size Small and compact
Warranty3 yrs

FEATURES

POOL TYPE – Pentair MasterTemp is ideal for large sized pool and it can heat up small pools quickly. This pool heater can be used in saltwater, bromine, and hard water pool systems. This pool heater is specifically designed for heating pools and spas.

INSTALLATION – a proper installation is required for any pool heater. If you, do it by your own then you should be very careful to connect all the parts at the right place otherwise you may face leakage problem. You should not be stored it close to windows, doors and air vents. You can also take the help through the user manual.

CONTROL PANEL- The control panel displays the water temperature, and five led lights give you system status which indicates when your pool heater needs servicing. These are the list of buttons and each button perform different functions for the Pentair MasterTemp 400.

  • POOL ON- This button sets the temperature of pool heater.
  • SPA ON- This button is used to change the heater temperature of SPA.
  • HEATER OFF- this button is used to switch off the heater.
  • TEMP UP- you can raise the temperature of heater by pressing this button.
  • TEMP DOWN- This button is used to low the temperature of heater.

HEATER DESIGN –The exterior design of Pentair MasterTemp is rustproof that prevent it to moisture and humidity. When we talk about the interior part the heating chamber protect the gas crevices from dust and bugs. In winter season, you should drain water from the heater, pool pump, filter and PVC pipes to protect your equipment from destroying. This process increases the life of your pool heater.

CUPRO-NICKEL HEAT EXCHANGER –Pentair MasterTemp pool heater heat exchanger comes with coiled wiring rather than burner that heats up quickly. It also comes with combustion chamber. traditional heat exchangers are made of copper that are cheap but they are not corrosion free and they can’t be used in salt and hard water.  While Pentair master temp comes with cupro-nickel heat exchanger which transfers maximum heat to the pool that heats up the pool in less time and maintain the temperature for long time. Cupro-nickel heat exchanger is long lasting than copper heat exchanger. It can be used with both chemical and hard water.

DIGITAL DISPLAY – Pentair MasterTemp is equipped with digital display monitor that makes it easy to operate. After setting in, you operate this heater with the help of digital dial pad that has up and down thermostat buttons. The dial pad also uses to inform the user when it needs servicing.  It also has a multifunction temperature controller that is used to operate it correctly.

WARRANTY – MasterTemp provides 3 -year extended warranty to all models after registering the product.

Pros & Cons

Pros
  • Small and compact
  • Works fast
  • Eco-friendly – Low NOX emissions
  • easy to install
  • Rotating top dial pad (to face either left or right)
  • Automatic shut off to prevent overheating
  • 3-year warranty (once product is registered)
  • Suitable for saltwater pools and all pool types including bromine, hard water, and high flow pressure pools
Cons
  • Little bit noisy

FREQUENTLY ASKED QUESTIONS

Q: What is a 400k BTU rating?
A: BTU stands for British Thermal Unit and 1BTU can increase the water temperature at 1 degree of 1lb of water that means higher BTU raise the water temperature quickly.

Q: What kind of heat exchanger does Pentair MasterTemp pool heater uses?
A: Pentair MasterTemp comes with a coiled heat exchanger with a combustion chamber. Cupro-nickel heat exchanger transfers the maximum heat to the pool. It is long lasting and also works with chemical and hard water.

Q: How long does it take for Pentair MasterTemp pool heater to heat up the pool?
A: A 400k BTU pool heater can approximately increase the water temperature by 2 degree per hour of a medium sized pool. Matertemp can heat up a small pool very quickly.

Q: Does gas heater or heat pump heat up the pool faster?
A: Heat pump works when the outside temperature is 104-degree F. Gas heater heat up the pool 7 times faster than a heat pump.

Q: Can Pentair MasterTemp pool heater be used in saltwater or hardwater pools?
A: Pentair pool heaters can work with chlorine, bromine or salt water of pools and spas.

Q: Is installing the MasterTemp easy and convenient?
A: If you want a proper connection without any issue then it is recommended to get a qualified engineer for installation. But if you, do it by own with help of manual and videos, you should connect all connection tightly and properly. And if you get some issues then its warranty helps to protect.

Q: How is the water temperature set on the heater?
A: you can set the water temperature by using the dial pad on main board.

Q: Does the heater automatically shut down after reaching the required temperature?
A: yes, it has the feature of automatic shut down when it reaches the required temperature.

Q: Does gas heater work in any type of climate?
A: yes, it works well in any climate, even in cold weather

Q: Does Pentair MasterTemp pool heater use natural gas or propane?
A: Pentair MasterTemp pool heater with model number 460737 uses propane.

Q: How to keep the pH levels under control?
A: low PH is more harmful for a pool heater than high PH so you should keep your pool clean and in balanced PH. You should check the PH level of your pool water daily. PH should be between 7.4-7.6 and chlorine must be over 1.5.

Q: What is the required flow rate for Pentair MasterTemp pool heater?
A: the required flow rate of Pentair MasterTemp is at least 40 GPM. If rate is different then heater will not start.

CONCLUSION 

Pentair MaterTemp pool heater is ideal for large sized pools. This is small and compact pool and spa heater that works extremely fast. It is used for salt and hard water both. Its rustproof exterior design increases the life of product. It can work in extreme weather conditions. Overall Pentair MasterTemp comes with all the features that a pool owner wants. It’s a value for money product.

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Filed Under: Pool Heater Tagged With: 400k, Pentair master temp

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