"Pentair - Minimax Pool Heater - Spa Heater - 75N - Natural Gas - 75,000 BTU - 80% Efficiency"

Why buy more heater than you need, when MiniMax ™ 75 is sized specifically for your spa or small aboveground pool. The MiniMax  heater is a compact, self-contained unit  perfect for heating spas and small aboveground pools.. Equipped with either a reliable direct-spark ignition or a standing pilot and Presslite ™ millivolt internal ignition, MiniMax is easy to install and maintain. The MiniMax heater is the efficient and economical way to keep your spa or small pool at the optimum comfort temperature.

• High 82% thermal efficiency keeps operating costs low while directing more produced heat to your pool instead of into thin air.
• Patented thermostatic bypass valve minimizes condensation-related calcium scaling and corrosion, preserving heat transfer efficiency.
• Quiet, dependable operation from proven burner system.
• Service-friendly design includes bronze header system for long life and union connection fittings for fast draining and easy winterization.
• Energy-efficient design for minimal fuel consumption and low operating cost.
• Quiet and dependable operation from proven packaged burner system.
• Stainless steel burners for long, corrosion-free life.
• Ceramic tile insulation prevents heat loss for greater heat transfer efficiency and cool-to-the-touch exterior.
• Low-profile design with rounded corners is visually attractive.
• User-friendly controls make operation simple and trouble-free.
• Prewired for automatic pool/spa controls.
• Built-in vent top for efficient combustion.
• 1-1/2" NPT connections for easy installation.
• One year warranty.