Home Pentair MasterTemp HD Low NOx Pool Heater - Electronic Ignition - Cupro Nickel - Natural Gas - 400,000 BTU HD - 460805
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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
$2,380.00

Quantity:
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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.
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
Does anyone know the weight of the unit?
A shopper on May 10, 2019
REVIEWS
4.8 / 5.0
12 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
10
2
0
0
0
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 4 years ago
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
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
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 4 years ago
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
4 months ago
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
1 year ago
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
1 year ago
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
1 year ago
Would recommend
Excellent pool heater. Warms up water faster than expected.
April 5, 2020
Purchased
6 months ago
Best deal
I had a Pentair heater for 10 years so I knew I wanted to get another one. The new model, Mastertemp, replaced the old Minimax and it works great. We were informed about the upgraded heat exchanger by Brian at PSU since we have a salt pool and we were able to get the upgraded heater for less than what the local store was charging for the standard model! I couldn't be happier with the product and the shopping experience.
March 9, 2014
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
While the majority of Pentair products are covered by a 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 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. TradeGrade products purchased online will receive a sixty-day parts ONLY limited warranty. View the list of TradeGrade Products.
 
^Labor Costs are not covered outside of US/Canada.
 
Warranty by Product / Product Category (subject to TradeGrade requirements if applicable)
Length of Warranty Requires Professional Installation
Automation
SunTouch® Solar and SolarTouch® Control Systems 3 Years Yes
Automation equipment, excluding SunTouch® Solar and SolarTouch®Control Systems 1 Year Yes
IntelliConnect™ 1 Year Yes
IntelliCenter® 1 Year Yes
IntelliLevel™ 1 Year Yes
Filters
Filters 1 Year Yes
Heaters
ETi™ 400 3 Years Parts & Labor^ Yes
UltraTemp ETi™ 3 Years Parts & Labor^ Yes
Heaters 2 Years Yes
Heat Pumps
Heat Pumps 2 Years Parts & Labor^ Yes
Compressor 10 Years Parts & Labor^ Yes
Titanium Heat Exchanger Lifetime Yes
Lighting
Light Bulbs 60 Days Yes
Lights 1 Year Yes
IntelliBrite® 5G White LED Light 2 Years Yes
MicroBrite™ 2 Years Yes
Pumps
Single and Dual Speed Pumps 1 Year Yes
Single-Phase, TEFC Super Duty Pumps 2 Years Yes
Select Variable Speed Pumps 3 Years  
SuperFlo® VS, SuperFlo® VST and SuperMax® VS Variable Speed Pumps 2 Years Yes
IntelliFlo (#011028) and IntelliPro (#P6E6VS4H-209, #013028) 2 Years Yes
IntelliFlo 2 VST (#011055) and IntelliPro 2 VST (#013001) 3 Years Yes
IntelliFlo VSF (#011056) and IntelliFloXF VSF (#022056) 3 Years Yes
IntelliPro VSF (#013004) and IntelliProXF VSF (#023056) 3 Years Yes
Sanitizers
BioShield® UV Disinfection Sanitizer 2 Years Yes
BioShield Sanitizer Quartz Sleeve only 1 Year  
IntelliChlor® Salt Chlorine Generator (without Power Center) 2 Years  
iChlor™ Salt Chlorine Generator - Bundle with Power Supply and Cell (iChlor 15 and iChlor 30) 3 Years Yes
White Goods / Water Features / Valves
White Goods and Water Features and Valves 1 Year Yes
Maintenance Equipment / Replacement Parts
Maintenance Equipment and Replacement Parts
60 Days (with exception of motors)
 
Single-Phase, TEFC Super Duty Replacement Motors 2 Years Yes
Above Ground Systems
Above Ground Systems 1 Year  
Cleaners (Automatic cleaners purchased in the USA from entities outside the USA do not qualify for any warranty)
Tires, Rollers, Brushes, Climbing Rings, Cartridge Fillers 60 Days  
Suction Seal, Foot Pad, Wings, Bumper, Strap, Seal Flaps 1 Year  
Legend and Legend II Inground Cleaner 1 Year  
Racer® Inground Cleaners 1 Year  
Platinum™ Inground Cleaner 1 Year  
Warrior® Inground Cleaner 2 Years  
Lil Rebel™ Above Ground Cleaner 2 Years  
Tires, Rollers, (Rebel, Warrior and Lil Rebel only) 90 days  
Dorado® Inground Cleaner 2 Years  
Kreepy Krauly® Inground Cleaner 2 Years  
Kruiser™ Inground Cleaner 2 Years  
Great White® Inground Cleaner 2 Years  
Racer LS® Inground Cleaner 2 Years  
Rebel® Inground Cleaner 2 Years  
SandShark™ Inground Cleaner 2 Years  
Prowler® 820 and Prowler 830 Inground Cleaners 2 Years  
Prowler® 910, 920 and Prowler 930 Inground Cleaners 2 Years  
Commercial
ACU-TROL AK Color and Accessories 1 Year Yes
ACU-TROL Commercial Controllers 5 Years Yes
ACU-TROL Commercial pH or ORP Probes 2 Year Yes
ACU-TROL Electronic Modules 5 Year Yes
IntelliChem Commercial Chemical Controller 2 Years^ Yes
IntelliChlor (CIC60P & CIC60S) Commercial Salt Chlorine Generator (w/o power center) 2 Years or 15,000 operative hours (whichever comes first) Yes
ETi Heater 3 Years Yes
Heat Pumps 2 Years parts & labor^ Yes
IntelliBrite 5g WHITE Lights 2 Years Yes
STARK Commercial Filters 15 Years tank (prorated years 4-15); 3 Years internals/valves/contollers^ Yes
THS Series Commercial Filters 10 Years tank (prorated years 4-10); 3 Years internals/valves/controllers^ Yes
WhisperFloXF/Max-E-ProXF Variable Speed 5HP Pump 2 Years Yes
Acu Drive XS Variable Speed Drive 1 Year unless extended warranty (3 or 6 Years) purchased Yes
All Other Commercial Products 1 Year subject to TradeGrade requirements if applicable Yes
 
Exceptions that may result in denial of a warranty claim: 
  1. Damage caused by careless handling, improper repackaging, or shipping.
  2. Damage due to misapplication, misuse, abuse or failure to operate equipment as specified in the owner's manual.
  3. Damage caused by failure to install products as specified in the owner's manual.
  4. Damage due to unauthorized product modifications or failure to use Pentair original replacement parts.
  5. Damage caused by negligence, or failure to properly maintain products as specified in the owner's manual.
  6. Damage caused by failure to maintain water chemistry in conformity with the standards of the swimming pool industry for any length of time.
  7. Damage caused by water freezing inside the product.
  8. Accidental damage, fire, acts of God, or other circumstances outside the control of Pentair.
  9. Please see warranty card for commercial exceptions.
Visit www.pentair.com to submit your product warranty registration.
This information was updated on 9/25/2020. For the most current information and full warranty policy please visit www.pentair.com.

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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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