Home Sta-Rite Max-E-Therm Low NOx Pool Heater | Electronic Ignition | Digital Display | Propane | 400,000 BTU | SR400LP
NOTICE: The Texas weather emergency in February, in addition to the ongoing demand increase for pool products from the Covid pandemic, have caused industry-wide shortages on many products that most vendors expect to last late into 2021/early 2022. We're allowing items to be purchased so that customers who choose to wait will have their order shipped when product arrives. Many times there are long shipping delays on the few products we do have in stock. Please contact us to ask about availability. Live Chat and email will get the quickest response. 

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
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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
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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 9 questions Browse 9 questions and 5 answers
The SR400HD is it available in LP?
A shopper on Dec 1, 2020
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.
Does the SR400LP have the optional Smart Heater Bypass valve control to divert water flow when heater bis not in use?
A shopper on Jul 19, 2021
Do you have this pool heater in stock and what is the delivery time? Sta-Rite Max-E-Therm Low NOx Pool Heater | Electronic Ignition | Digital Display | Propane | 400,000 BTU | SR400LP
David P on Jun 17, 2021
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
4.9 / 5.0
7 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
6
1
0
0
0
Rated 5 out of 5
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 3 years ago
Rated 5 out of 5
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 5 years ago
Rated 5 out of 5
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
Rated 5 out of 5
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
Rated 5 out of 5
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 5 years ago
Rated 5 out of 5
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
1 year ago
Rated 4 out of 5
Great pool heater!
Great product. Easy to install and works great. First one lasted for fourteen years. Hopefully this one will last longer.
July 4, 2021
Purchased
3 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
  • LIMITED WARRANTY: Pentair warrants its products to be free from defects in material and/or workmanship for a period of sixty (60) days (parts only) from the original date of purchase and/or installation. Customer agrees to prepay all shipping charges to Pentair.
  • EXTENDED WARRANTY: To receive a product extended warranty (longer than 60 days from the original date of installation), customer must:
  1. Register the product;
  2. Provide a copy of the sales receipt; and
  3. Provide a copy of the installation invoice, provided by the qualified installer, within 60 days of installation (if required). Certain products do not require qualified installation but still require product registration and copy of the sales receipt to receive the extended warranty.
  • TRADEGRADE WARRANTY: TradeGrade products must be purchased from a retail store (brick and mortar), pool builder or pool service company. If purchased online (via internet) the product will only receive a sixty (60) day limited warranty. View the list of TradeGrade products here.
  • ECOMMERCE (EC) WARRANTY: Products purchased from an Authorized Pentair Online Reseller 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. To receive an eCommerce warranty, customer must:
  1. Register the product, and
  2. Provide a copy of the sales receipt
 
Visit www.pentair.com to submit your product warranty registration.
 
This information was updated on 04/05/2021. 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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