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Home Pentair MasterTemp HD Low NOx Pool Heater - Electronic Ignition - Cupro Nickel - Natural Gas - 400,000 BTU HD - 460805
NOTICE: The pool & spa industry continues to face industry-wide shortages on many products that most vendors expect to last late into 2022. We're allowing items to be purchased so that customers who choose to wait will have their order shipped when product is available. Most vendors are not providing any ETA on when items will be available. WE WILL EMAIL YOU RIGHT AWAY IF YOUR ITEM IS BACKORDERED. 

Pentair MasterTemp HD Low NOx Pool Heater - Electronic Ignition - Cupro Nickel - Natural Gas - 400,000 BTU HD - 460805

Pentair MasterTemp HD Low NOx Pool Heater - Electronic Ignition - Cupro Nickel - Natural Gas - 400,000 BTU HD - 460805 Pentair MasterTemp HD Low NOx Pool Heater - Electronic Ignition - Cupro Nickel - Natural Gas - 400,000 BTU HD - 460805 Pentair MasterTemp HD Low NOx Pool Heater - Electronic Ignition - Cupro Nickel - Natural Gas - 400,000 BTU HD - 460805
$3,671.22

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Platinum Preferred Manufacturer
  • Cupro Nickel is highly resistant to corrosion.
  • High Efficiency Rating Makes these Heaters Extremely Economical to Operate.
  • Heats Up Fast so No Long Waits Before Enjoying your Pool or Spa while Achieving Best-In-Class Efficiency.
  • Tough, Rust Proof Exterior Handles the Heat and Weathers the Elements.
  • Improved Resistance to Rodent Intrusion
Purchase Options
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OVERVIEW

Ultra-High Performance in a Compact, Quiet & Eco-Friendly Design

 
MasterTemp Heaters offer all the efficiency, convenience and reliability features you want in a pool heater, plus a lot more. As easy to use as your home heating system, plus, user-friendly indicator lights make system operation and monitoring a snap. The compact design and super-quiet operation won't intrude on your poolside leisure time. 
 
MasterTemps easy-to-read controls make system operation and monitoring simple. Pool and spa temperatures can be pre-set and controlled with the push of a button. A digital display indicates the water temperature, and five LED lights give you system status and let you know if the heater needs service.
 
 
New Improved Rodent Resistance for the MasterTemp High Performance Heater
 
The engineers made improvements to reduce gaps and eliminate access points, including advancements to the heater base, all exterior side panels and louvers, the gas valve and water manifold openings, the exhaust opening and the exhaust cover. These subtle, but important, design changes add up to a better heater, from every angle.
 
In addition to the new rodent resistant improvements, the features and benefits of a MasterTemp High Performance Heater include:
  • Enhanced LCD display and diagnostics include easy to display and front-facing error messages and icons
  • Best-in-class energy efficiency
  • Eco-friendly certified for low, NOx emission and outperforms industry standard
No matter what you're seeking in your swimming pool heater, MasterTemp measures up. Compare this list of features to any other and you'll see why MasterTemp is setting a new standard for total value:
 
Features:
  • Very compact design for such a high performance heater allows for smaller overall equipment pads that won't intrude on your poolscape.
  • Easy to install or retrofit in even the tightest spaces.
  • A fully pre-mixed system with a highly efficient air and gas mixture lets MasterTemp heat up fast. No long waits before enjoying your pool or spa.
  • Compare energy efficiency ratings and you'll find MasterTemp at the top of the list. Comfort and economy can go together.
  • With a hot surface ignition (no pilot light) and pushbutton, digital controls, MasterTemp is as easy to operate as your home heating system. Plus, user-friendly indicator lights make system operation and monitoring a snap.
  • The easy-to-view, rotating digital display places controls front and center, no matter how MasterTemp is positioned on your equipment pad.
  • MasterTemp is engineered for super-quiet operation and won't intrude on your poolside leisure time.
  • A tough, composite exterior handles the heat and weathers the elements.
  • Safe operation is assured through a series of features, including; a water pressure switch that senses the pump is running to prevent overheating; high limit switches assure the heater turns off if water temperature exceeds factory set limits; manual gas shut-off when service is required; stack flue sensor also guards against overheating. 
  • Approved for installation on combustible surfaces.
Why MasterTemp Heaters are the "Greenest" Choice
 
An Eco Select Brand: MasterTemp Heaters offer best-in-class energy efficiency. Plus, they are certified for low NOx emissions, making them eco-friendly favorites. In fact, MasterTemp outperforms current industry standards for air pollution exhaust.
 
The Eco Select Brand identifies Pentair's "greenest" and most efficient equipment choices. These products save energy, conserve water, eliminate noise or otherwise contribute to a more environmentally responsible equipment system. 
 
As the global leader in pool and spa equipment manufacturing, Pentair strives to provide greener choices.
 
  
 
Specifications:
Brand Pentair
Sub Brand MasterTemp
Item Low NOx Pool and Spa Heater
Type High Performance
Gas Type Natural Gas
Control Type Digital
BTUH Input 400,000
Cabinet Width 23.02"
Cabinet Depth 32.61"
Cabinet Height 28.15"
Gas Connection 3/4"
Water Connection 2"
Voltage Rating 120/240 VAC
Frequency Rating 60 Hz
Phase 1-Phase
Flow Rate 120 gpm


Brand: Pentair
SPECIFICATIONS
BTU Rating
400K
Gas Type
Natural Gas
Location
Indoor/Outdoor
Elevation
0-9000'
Ignition
Electronic
Q & A
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 9 questions Browse 9 questions and 25 answers
Should I upgrade the heat exchanger with a purchase of the Pentair Mastertemp HD 400,000 BTU if I have a salt pool?
Mark B on Nov 3, 2015
BEST ANSWER: You need the HD version with the Cupro Nickel coating for a salt pool.
Does anyone know the weight of the unit?
A shopper on May 10, 2019
if you have the heater on in the pool and the pump motor shuts off, does the heater also shut off?
A shopper on Feb 14, 2017
BEST ANSWER: Yes the heater would shut off also. Flow/Pressure switch would get it if electricity interruption occurred. Should never shut water pump off with heater on because heater would likely suffer damage. Fireman's switch should prevent this, if wired properly.
Where is the gas hookup located on the pentair 460805 heater?? I don't see it on the diagram.
Cyndy E on Feb 8, 2018
BEST ANSWER: The gas hook up is on the same side as the exhaust towards the center left. So if looking at the picture of the heater, it would be on the left panel.

https://www.poolsupplyunlimited.com/Products/Manuals/80383_2011120223822.pdf
Picture on page 13
need wiring diagram , how do i hook up ,to a hot 220?
jim t on May 3, 2016
BEST ANSWER: The installation manual pg 29-32 has the wiring diagrams and instructions
What's the thermal efficiency for Model 460805?
James H on Oct 13, 2017
BEST ANSWER: it is one of the best of not the best in the efficiency
So if I order this heater and have it professionally installed for my commercial pool, the warranty lasts just 1 year?
Mark W on Mar 2, 2016
BEST ANSWER: Hey Mark, I bought this same Pentair heater in 2014. The reason I chose Pentair is because my pool service company and my pool builder both recommended it. I previously had a Hayward heater that went out after 5 years. I expect better life out of the Pentair and so should you based on my research.
I need to vent the Pentair Master Temp HD Low NOx Pool Heater - Electronic Ignition - Cupro Nickel - Natural Gas - 400,000 BTU HD - 46080 to the outside of a building. What duct should I use to vent and what vent cap? only going about 3'.

Thanks
Robert G on Sep 3, 2019
BEST ANSWER: If this is a horizontal and positive pressure application then you’ll use 4” venting. Adapter 77707-0086 is used for Heat-Fab venting manufactured by Selkirk Corp. Adapter 77707-0087 is used for venting manufactured by Z-Flex U.S. Venting. Both vents must be stainless steel and should be manufactured by one of these two companies. We sell the adapter but not the vent pipe itself.

If this is a vertical and negative pressure application then you would use adapter 77707-0076 and 6” vent pipe for runs under 8’.
Pentair Sta-Rite 4x6 Metal Flue Collar for Indoor Vertical Venting - Negative Pressure for Distance Less Than 8' | 77707-0076
Pentair Sta-Rite 4x6 Metal Flue Collar for Indoor Vertical Venting - Negative Pressure for Distance Less Than 8' | 77707-0076
Pentair 4" Stainless Steel Appliance Adapter for Horizontal or Vertical Positive Pressure by Heatfab | 77707-0086
Pentair 4" Stainless Steel Appliance Adapter for Horizontal or Vertical Positive Pressure by Heatfab | 77707-0086
Pentair 4" Stainless Steel Appliance Adapter for Horizontal or Vertical Positive Pressure Venting by Z-Flex | 77707-0087
Pentair 4" Stainless Steel Appliance Adapter for Horizontal or Vertical Positive Pressure Venting by Z-Flex | 77707-0087
I live in Las Vegas @ about 2500 feet. I also have a Jandy aqualink RS 1-touch controller which was able to control pool and spa heat with an old Hayward heater I am replacing. Will this heater operate @ this altitude and is it controllable (wired in house) by this controller?
Thanks
john b on Apr 12, 2016
BEST ANSWER: This heater is good for up to 9000 ft elevation and can be ran by the Aqualink RS system
REVIEWS
4.9 / 5.0
15 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
13
2
0
0
0
Rated 5 out of 5
The heater works great with my salt water pool. Installation was a breeze. Would suggest it for salt water application
August 22, 2016
Purchased
over 6 years ago
Rated 4 out of 5
Reliable
I replaced my old Pentair with this heater. I had my first Pentair for 16 years. The life span on these is incredible. Highly recommend these to anybody.
February 3, 2017
Rated 5 out of 5
Excellent Heater
When I open the box everything was there and within 40 minutes it was installed and running. This heater works great! Very quiet, very efficient, very powerful. <br>
March 9, 2017
Rated 5 out of 5
Purchase and Instalation Pentair Pool Heater
Purchased a new Pentair Master Temp pool heater in Jan. 20016. It has been less than a year but the heater is working very well through the hot Calif. summer. Installation went without any trouble. They arrived on time and were in and out in less than two hours, up and running. I was treated very professionally and had any questions answered to my satisfaction.
August 21, 2016
Purchased
over 6 years ago
Rated 5 out of 5
Quick Heat
Heats up our spa/pool really quick. Blower is a little loud but not a deal breaker. It’s great to be able to heat the water to the exact temp you desire.
June 1, 2020
Purchased
over 2 years ago
Rated 5 out of 5
2nd time around
This is my second Pentair nat gas heater. The first one lasted 16 years! That's a win in my book. This one is smaller and more compact, and heats up the pool even quicker. I have only had it two weeks so I do not know if it is more efficient or not yet. Digital display is great and the water temp it shows matched the thermometer in the pool, so that is working correctly as well.
June 19, 2019
Purchased
over 3 years ago
Rated 5 out of 5
2nd time around
This is my second Pentair nat gas heater. The first one lasted 16 years! That's a win in my book. This one is smaller and more compact, and heats up the pool even quicker. I have only had it two weeks so I do not know if it is more efficient or not yet. Digital display is great and the water temp it shows matched the thermometer in the pool, so that is working correctly as well.
June 19, 2019
Purchased
over 3 years ago
Rated 5 out of 5
PENTAIR MASTER HD POOL HEATER
I AM VERY HAPPY WITH MY PURCHASE OF THE PENTAIR MASTER TEMP HD HEATER . AT START UP IT WILL HEAT MY SPA IN 15 TO 20 MINS TO A TEMPETURE OF 98 DEGREES. WHEN STARTING IT HAS A SLIGHT ROAR TO IT, BUT I GUESS THAT IS TO BE EXPECTED FROM A 400,000 BTU HEATER. OVERALL I BELIEVE IT TO BE A GREAT PURCHASE, AND USER FRIENDLY.
October 11, 2020
Purchased
1 year ago
Rated 5 out of 5
Pentair Pool Heater
Fast excellent service. 100% satisfied. This is our second Pentair pool heater, easy to operate. Very efficient. We are in Mesa & John recommended a heater installer who had everything up and running within our an hour.

Thank you John & Company
December 14, 2018
Purchased
over 3 years ago
Rated 5 out of 5
Great, efficient heater
Versatile placement options and made to last. This my 2nd Mastertemp I have owned and its a solid performer. Heats my 20K gal pool quickly.
October 20, 2020
Purchased
1 year ago
RESOURCES
Adobe Acrobat PDF Brochure
Adobe Acrobat PDF Data Sheet
Adobe Acrobat PDF Eco-Friendly Brochure
Adobe Acrobat PDF Owners Manual

Register your Pentair product online at www.pentair.com.

WARRANTY
You've always been able to count on the quality and long service life of Pentair products. Pentair uses state of the art workmanship, materials and manufacturing processes to create the most innovative pool and spa equipment anywhere. And now Pentair products can deliver even more value and peace of mind, because Pentair offers extended warranty coverage on select products that are installed by a qualified installer*.
 
While the majority of Pentair products are covered by a sixty- (60) day warranty, a select number of products qualify for extended warranty coverage.
 
Select Bundled Products: applies to purchases and qualified installation of a minimum of a pump and filter, and one or more of the following: heaters, heat pumps, control systems, automatic cleaners, lighting, salt chlorine generators or UV sterilizer**
 
*Note: Qualified Installer - Defined as a licensed professional who charges a fee for his services, and possesses a business license, contractor's license and/or resale permit. Common examples of a "qualified installer" include: Swimming Pool, Home Repair or Landscape Professional; Plumber or Electrician; General Contractor; Heating and Air Conditioning Specialist.
 
**Note: Bundled products - must be purchased on the same invoice and installed at the same time. If any product within a bundle is ineligible for the bundled warranty coverage then all products within the same bundle will be disqualified from receiving the three (3) year extended warranty coverage for bundled products.
 
TradeGrade products must be purchased from a retail store (brick & mortar), pool builder or pool service company to receive a one-year, two-year or three-year warranty. If purchased online will only receive a sixty-day limited warranty. View the list of TradeGrade Products.
 
Ecommerce (EC) products: Products purchased from an Authorized Pentair Online Reseller (products beginning with EC-) receive a one (1) year (parts only) warranty from the date of purchase. The exceptions are: IntelliChlor cells and IntelliFlo SVRS pumps which receive a two (2) year warranty. EC products are not eligible for the bundled three (3) year extended warranty.
 
Visit www.pentair.com to submit your product warranty registration.
 
This information was updated on 11/19/2021. For the most current information and full warranty policy please visit www.pentair.com/warranty.


 Adobe Acrobat PDF Warranty Information
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ABOUT THE STORE
Pool Supply Unlimited is an e-commerce company that loves water. We love to pump it, filter it, heat it, chlorinate it, light it up and stare at it while we're barbequing a fat, juicy steak. There are real pool professionals working here. Our guys have seen thousands of pools in their careers, no exaggeration. We are based in Southern California and can land most products to your door (within the 48 contiguous states) in less than a week.
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