Pentair MasterTemp 400HD Gas Swimming Pool & Spa Heater
Pentair MasterTemp 400HD Gas Swimming Pool & Spa Heater
Pentair MasterTemp 400HD Gas Swimming Pool & Spa Heater
Pentair MasterTemp 400HD Gas Swimming Pool & Spa Heater
Pentair MasterTemp 400HD Gas Swimming Pool & Spa Heater
Pentair MasterTemp 400HD Gas Swimming Pool & Spa Heater

Pentair MasterTemp 400HD Gas Swimming Pool & Spa Heater

  • Recommended Retail Price
$10,130.00 $7,000.00 Save $3,130.00
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  • Free Shipping Sydney Wide
  • Installation & Setup Available
  • Call To Speak To A Professional: 0421 949 949
  • Low stock - 3 items left
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Pentair MasterTemp 400HD Gas Swimming Pool & Spa Heater

Maximum Heating Power. Built for Performance.

The Pentair MasterTemp 400HD is the ultimate solution for fast, efficient, and reliable heating of large swimming pools and spas. With a massive 400MJ output and a heavy-duty cupro-nickel heat exchanger, it’s designed to perform under pressure — perfect for saltwater environments, high flow rates, and tough Australian conditions.

This high-performance unit delivers commercial-grade power with the convenience and quiet efficiency of a residential heater. Whether you're heating a backyard pool or a premium spa setup, the 400HD gets the job done quickly and consistently.

Key Features:

  • Ultra-Powerful 400MJ Heating Capacity
    Heats even the largest pools and spas rapidly and efficiently.

  • Cupro-Nickel Heat Exchanger
    Corrosion-resistant and ideal for saltwater or high-flow pool systems.

  • Advanced Digital Display
    Rotatable, easy-to-use control panel with full diagnostics and temperature control.

  • Low NOx Emissions
    Environmentally friendly design meets strict air quality standards.

  • Quiet Operation
    Delivers high output with minimal noise.

  • Compact Footprint
    Designed to fit tight equipment spaces without sacrificing performance.

If you're after maximum heating power with uncompromising reliability, the Pentair MasterTemp 400HD is your top-tier choice. It’s the heater of choice for those who demand the best in performance and durability. Shop. Install. Swim. — only at The Pool Lab.

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FREE DELIVERY SYDNEY Wide

We’re offering FREE DELIVERY on all orders over $100, straight to your door. No hidden fees, no extra costs—just fast, hassle-free service!

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Expertise you can trust

With years of hands-on experience in the pool industry, our team brings unmatched technical knowledge to every job.

Service That goes beyond the surface

Prompt, reliable, and friendly communication. Transparent quotes with no upsell pressure.

quality without compromise

Premium equipment and products from trusted brands that deliver long-term results that save you time, money, and headaches.

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Free installation on all oasis pool equipment

Purchase any Sunlover Oasis branded pump, filter, chlorinator or heater and receive free installation.
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Customer Satisfaction at Our Core

Customer satisfaction isn't just a goal — it's the foundation of everything we do. From your first call to the final poolside result, we prioritise clear communication, quality workmanship, and reliable service. We’re committed to delivering a seamless, stress-free experience that leaves every customer confident and satisfied.

💦 What Our Happy Pool Owners Say! 💦

★★★★★

My clients & I couldn’t be happier with the service from Joe at The Pool Lab. Highly recommend & always available, his quality of work is top notch & you will not be disappointed.

Nick Begetis - Begetis Estate Agents
Enfield
★★★★★

You will never go past Joe for his professionalism, courtesy and quality of service. I would never use another pool tech. Support your self employed young people that are doing the right thing by consumers.

Matthew Cragg
Auburn
★★★★★

We couldn't be happier with the service from The Pool Lab. Joe looks after our pool regularly and has been absolutely fantastic. He has provided us with great advice on how to keep our pool in top shape, and recently recommended and set up a new Maytronics robotic pool cleaner. Thanks again for everything!

Roger Alam
Bardwell Valley
★★★★★

I have been dealing with Joe for a couple of years now. Always does an excellent job. Very responsive and very knowledgeable with all things pool related. He is very honest and reliable and I am glad to have found someone I can completely trust to look after my pool.

Mona Fahmy
Strathfield South
★★★★★

I’ve had bad experiences with pool service companies in the past, but Joe and The Pool Lab completely changed my mind. They show up on time, communicate clearly, and always do a fantastic job. Whether it’s cleaning or checking the equipment, they handle everything with care and professionalism. Highly recommend their services!

Rashed Barakat
Burwood
★★★★★

We couldn’t be happier with the amazing job Joe has done restoring our pool. From the start, he’s been honest, reliable, and always willing to help. His support and advice throughout the process made a big difference. The pool looks great and is finally swimmable again. Highly recommend to anyone looking for someone trustworthy and knowledgeable. Thanks again for everything!

Patrick Abu
Roselands
★★★★★

Joe from Pool Lab is trustworthy, reliable, and does a fantastic job maintaining our pool. We’re on a monthly service plan and it’s such a relief to leave everything in Joe’s capable hands. He takes care of it all without fuss. The pool is always in great shape thanks to his consistent and thorough work. I highly recommend Pool Lab for all your pool maintenance and repair needs.

Venetia Maher
Croydon
★★★★★

We are really happy with Joe and The Pool Lab. Super knowledgeable and friendly, offers good options and solutions and our pool is looking better than ever. Highly recommend!

Lewis Tulley
Marrickville
★★★★★

Joe and The Pool Lab have been looking after our pool for a while now, and it’s never looked better. Their attention to detail, reliability, and friendly service make all the difference. Highly recommend!

Gordana Skarzynski
Strathfield

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