Home Sta-Rite Max-E-Therm Low NOx Pool Heater | Electronic Ignition | Digital Display | Propane | 400,000 BTU | SR400LP
COVID-19 Notice: Pool Supply Unlimited is open for business. We are experiencing extremely high call / email volume and responses are delayed. Our FAQ page has answers to many common questions.

Sta-Rite Max-E-Therm Low NOx Pool Heater | Electronic Ignition | Digital Display | Propane | 400,000 BTU | SR400LP

Sta-Rite Max-E-Therm Low NOx Pool Heater | Electronic Ignition | Digital Display | Propane | 400,000 BTU | SR400LP Sta-Rite Max-E-Therm Low NOx Pool Heater | Electronic Ignition | Digital Display | Propane | 400,000 BTU | SR400LP Sta-Rite Max-E-Therm Low NOx Pool Heater | Electronic Ignition | Digital Display | Propane | 400,000 BTU | SR400LP Sta-Rite Max-E-Therm Low NOx Pool Heater | Electronic Ignition | Digital Display | Propane | 400,000 BTU | SR400LP Sta-Rite Max-E-Therm Low NOx Pool Heater | Electronic Ignition | Digital Display | Propane | 400,000 BTU | SR400LP
$2,172.02

Quantity:
Parts AvailableParts Available
Platinum Preferred Manufacturer
  • Lower Operating Costs - 84% efficiency rating - rated 1st in its class for highest energy efficiency

  • Environmentally Friendly - All units are low NOx
  • Compact Design - Ideal for retro-fit installation
RELATED ITEMS
  • Pentair Sta-Rite 4x6 Metal Flue Collar for Indoor Vertical Venting - Negative Pressure for Distance Less Than 8' | 77707-0076
    Indoor Vertical Venting - Negative Pressure 4x6 Metal Flue Collar for Distances Less Than 8' | 77707-0076

    $120.41
  • Pentair Sta-Rite 4x8 Metal Flue Collar for Indoor Vertical Venting - Negative Pressure for Distances Over 8' | 77707-0077
    Indoor Vertical Venting - Negative Pressure 4x8 Metal Flue Collar for Distances Over 8' | 77707-0077

    $120.18
  • Pentair 4" Stainless Steel Appliance Adapter for Horizontal or Vertical Positive Pressure by Heatfab | 77707-0086
    4" Appliance Adapter Horizontal or Vertical Venting, Positive Pressure by Heatfab | 77707-0086

    $123.22
  • Pentair 4" Stainless Steel Appliance Adapter for Horizontal or Vertical Positive Pressure Venting by Z-Flex | 77707-0087
    4" Appliance Adapter for Horizontal or Vertical Positive Pressure Venting by Z-Flex | 77707-0087

    $131.72
OVERVIEW
For indoor or outdoor installations on pools and spas. Features include an LED temperature readout with dual thermostat controls, temperature safety lockout, and 6-position control panel. PMG burner technology requires no outdoor draft hood. Proven Dura-Glas rust-proof construction with plastic manifold and PVC union connections. Heavy-duty units with cupro-nickel exchanger stands up to the harshest of applications, like low pH, high flow or heavy use.

An Eco Select„ Brand: Max-E-Therm® high performance heaters offer best-in-class energy efficiency. Plus, they are certified for low NOx emissions, making them eco-friendly favorites.

Sure, a beautiful pool looks inviting, but its cold water can keep you high and dry. Which is why it pays to have a Max-E-Therm® heater. After all, when the water's just right, you maximize the enjoyment of your pool experience. The fast-heating Max-E-Therm makes your pool irresistible on cool nights. It also allows you to extend your pool season. Unlike other heaters, Max-E-Therm offers you the latest advances from Sta-Rite®: a rustproof exterior, smart electronics and increased energy efficiency. Whether you're looking for quiet relaxation or wild fun, you'll always enjoy your pool in the warm comfort of Max-E-Therm.

Features:
  • Lightweight - Lightest heater in its class
  • Compact Design - Ideal for retro-fit installation
  • Easy to Switch - Change gas sources with installation of separate orifice
  • Environmentally Friendly - All units are low NOx
  • Rustproof Housing Sleek, matte black enclosure is made of Dura-Glas - an exclusive Sta-Rite material that handles the heat and weathers the elements
  • Lower Operating Costs - 84% efficiency rating - rated 1st in its class for highest energy efficiency
  • Custom or Retrofit - Direct-connects to Sta-Rite System:3® Mod Media filter or easily fits other systems
  • High efficiency rating makes the Max-E-Therm extremely economical to operate
  • Specially designed fueling and ignition process permits faster warming of your pool and spa
  • Easy-to-read, conveniently positioned control panel is simple to program
  • Dura-Glas„ housing will not corrode and stands tough against harsh weather
  • If you want that warm-all-over feeling, choose the Sta-Rite Max-E-Therm heater. It's a better choice for a host of reasons
  • Self diagnostics - Control panel indicator lights pinpoint heater or system conditions, which can save money through faster troubleshooting (if required)


Brand: Pentair
SPECIFICATIONS
BTU Rating
400K
Gas Type
Propane
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 6 questions Browse 6 questions and 5 answers
Why wont it heat up can hear it trying to start but no heat and I smell a little gas?
A shopper on Nov 3, 2018
BEST ANSWER: SWITCH IN ELECTRONIC SUPPLY BOX SET FOR 220 VOLTS, REVERSE AND SET FOR 115
SR400NA and LP,: both come with the LP and NG conversion kit. What's the difference?
jason v on May 28, 2020
BEST ANSWER: Sta-Rite makes two 400 models. The newer model has been upgraded to Copper Nickel coils that are more resistant to salt water pools.
What is the range of delivery?
A shopper on May 31, 2018
BEST ANSWER: Typical shipping time is 7-10 business days if the item is in stock. Please contact one of our representatives to check stock. Thank you.
What is the difference between the 400k LP and 400k HD propane heaters?
A shopper on Apr 13, 2018
BEST ANSWER: The heat exchanger is heavy duty made out of cipro-nickel, which will last longer, especially with a salt pool.
Will this heater connect to IntelliCenter?
A shopper on Aug 23, 2020
Is This pool heater available? Sta-rite SR400LP
Please advise
Judy S on Jun 1, 2020
REVIEWS
5.0 / 5.0
6 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
6
0
0
0
0
Representative extremely helpful with my purchase. Heater arrived quickly with no issues. It was installed and have had no problems.
March 17, 2018
Purchased
over 2 years ago
Sta-Rite SR400LP
Arrived very quickly (less than two days) in perfect shape. Installation and operation went very smoothly. An excellent experience.
September 5, 2016
Purchased
over 4 years ago
Great Replacement
My old heater finally went out so I ordered an exact replacement. Very quick delivery and easy installation. This is a work horse.
September 11, 2016
Purchased
over 4 years ago
So Easy
Not only does this heater work great, but it was so easy to convert from propane to natural gas. I bought the heater for a rental property that had propane and then moved it to my house where there is natural gas. There were no expensive and long list of parts to convert it - just one $30 small part that took no time to install. Too easy.
January 9, 2014
Very Happy
I have had it for about a month now. It fired right up and works extremely well and works fast. The savings in time and gas are amazing.<br>
February 9, 2015
Sta-Rite Max-E-Therm
So simple to operate. Very quick to heat the pool up (38k gallons). Highly recommended. And service from Pool Supply Unlimited was excellent.
July 8, 2020
Purchased
4 months ago
RESOURCES
Adobe Acrobat PDF Brochure
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.

CHOSEN FOR YOU
HABLAMOS ESPAÑOL
Hay muchas maneras diferentes de contactarnos, y nos gustaría hablar con usted sobre las preguntas de su compra, ayudarle a diagnosticar los problemas de su equipo y escuchar acerca de cómo podemos mejorar y todo lo que está en su mente.
Click Here
OPEN 7 DAYS A WEEK
5am - 8pm Weekdays
6am - 6pm Weekends
Pacific Standard Time
Will-Call Hours Click Here
NEWSLETTER
Be the first to know the latest news, deals & special events!

Email:


By signing up you indicate that you agree to the terms of our privacy policy.



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.
Visa Mastercard Discover American Express PayPal
McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams