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Product Summary

Sta-Rite Max-E-Therm 333,000 BTU Natural Gas Pool Heater by Sta-Rite Pool Products
Unlike other heaters, the Max-E-Therm 333k Natural Gas heaters offer you the latest advances from Sta-Rite a rustproof exterior, smart electronics and increased energy efficiency.

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Total Price for 1 item $64.99

Product Details

Sta-Rite Max-E-Therm 333,000 BTU Natural Gas Pool Heater

Sta-Rite Max-E-Therm Pool and Spa Heater | 333,000 BTU Natural Gas Heater

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. 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.

Exclusive Features:

  • 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
  • Calculate gas heater operating costs in your area by clicking here

An Eco Select Brand Product

The Eco Select brand identifies our “greenest” and most efficient equipment choices. Max-E-Therm heaters offer best-in-class energy efficiency. Plus, they are certified for low NOx emissions, making them eco-friendly favorites.

This heater is hot! Pool professionals will tell you the Max-E-Therm heater is an industry favorite for heating pools and spas. Its sleek, contemporary styling offers pool owners an easy choice over the traditional-style heaters—those plain-looking, clunky metal boxes just waiting for the rust to set in. The perfect mix Is the toe test telling you the water could be a bit warmer? No problem. The Max-E-Therm can quickly warm your pool or spa. A perfectly balanced mixture of fuel and air is ignited in the combustion chamber, which produces the optimal temperature for faster heating.

Rated first in its class! If operating cost was holding you back on a heater, you can proceed with confidence - Max-E-Therm has a best-in-class efficiency rating.

Added Benefits:

  • Lightweight making it the lightest heater in its class
  • Compact Design making it ideal for retro-fit installations
  • Easy to Switch Gas Source: 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 first in its class for highest energy efficiency
  • 2 Year Limited Manufacturer's Warranty

Product Specifications

Sta-Rite Pool Products Item SR333NA Documentation and Manuals

Sta-Rite Pool Products Item SR333NA Suggested Applications

  • All Concrete Pools
  • All Plaster Pools Including Colored, Stone, Glass, & Pebble
  • All Painted Pools
  • All Inground Vinyl Liner Swimming Pools
  • All Aboveground Swimming Pools

Shipping Rates

Orders Under $50 $5.00
Orders Over $50 FREE
3-Day Premium add $50.00
2-Day Premium add $65.00

Shipping Policies:

  • We only ship orders to the 48 contiguous United States.
  • Chemicals, pool paint, and some oversized items, will only ship via ground service.
  • Items shipped via Freight Service, such as pool heaters, will only ship via ground service.
  • All orders shipping to Maryland will incur a 6% sales tax charge.
  • Some items, including hazmat, may require a Direct Signature upon delivery.
  • Shipments must be inspected by customer prior to signing delivery receipt.
  • Orders containing small and light-weight items may ship via FedEx SmartPost or USPS.

Order Returns

You may return an item sold to you by up to 30 days after purchase. The product must be in good condition, unused, in original packaging, and must have all parts, accessories and paperwork; returns without these requirements and/or guidelines will not be accepted.

If a delivery attempt is unsuccessful on order requiring a direct signature, a 15% - 25% re-stock fee may be applied should the order be returned to by the carrier.

Any claims to missing parts, items or damaged goods for any orders must be made within 15 days of delivery date. We are not able to credit your shipping and handling fees if the wrong product was ordered due to customer error. However, if you received the wrong products due to an error on our behalf, we will pay for the return services fees and you will receive a full refund or exchange.

To return an item to, please call 800-4MY-POOL to get a Return Merchandise Authorization number (RMA) and return instructions. Any items returned without an RMA number will be refused. We will process your refund upon receipt of the returned product.

Products that cannot be returned:

  • Pool Chemicals
  • Special Orders
  • Pool Liners
  • Pool Paint

Products that may incur a re-stock fee of 15% - 25%:

  • Pool Cleaners *
  • Pool Heaters *
  • Pool Pumps *
  • Pool Filters *
  • Pool Lights & Fixtures *
  • Pool Ladders & Rails *
  • Pool Slides *
  • Pool Chlorinators *
  • Custom Manufactured Safety Covers
  • Pool & Spa Electronics or Controls *
  • In-Stock Safety Covers
  • Pool Covers that are Ordered and for the Incorrect Pool Size
  • Spa Cover Lifters *
  • Umbrellas & Umbrella Stands, and Hammocks *

* These products must not have been used, installed, or attempted to have been installed. All products must include original paperwork, parts & accessories, and everything accompanied with the product.

Concealed damage on any ground shipment must be reported within 3 business days. Freight shipments must be inspected for damages prior to customer signing delivery receipt. Please email any information regarding concealed damage to Please reference your order number in all order related email correspondence.

Customer is responsible for any/all return shipping charges. Some returns may be subject to a 15% - 25% restock fee that will be deducted from your refund.

Please call 800-4MY-POOL if you have questions regarding this return policy.

Thank you for shopping!

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