MBtek
APOLLO Large Water Buffer Tank​ 500/1000 Gal

Buffer Tank — Large-Capacity Commercial

APOLLO Large Water Buffer Tank​ 500/1000 Gal

Capacity: 5000 or 1000 gal

Stabilize hydronic flow, reduce short cycling, and add thermal mass for heating or cooling systems.

Model
500
Coil
Dual Coil
$8,510
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Product details

  • Hydronic thermal mass
  • SS316 construction
  • Residential to commercial
  • 10-year warranty

APOLLO Stainless Buffer Tank – 500 / 1000 Gal (Hydronic Heat Pump Buffer)

High-capacity stainless buffer tanks designed to stabilize hydronic heat pump systems, ensuring smooth operation during low-load conditions and improving efficiency during defrost cycles. Built for durability, flexibility, and long-term performance in residential and commercial applications.

Key Benefits

  • Optimized for heat pump systems to prevent temperature spikes and ensure proper shutdown
  • Supports defrost cycles in winter for improved system efficiency
  • Built with SS316 stainless steel for corrosion resistance and long service life
  • Insulated to reduce heat loss and condensation
  • Available with or without internal coils for system flexibility

Specifications

BF500 – 500 Gallon

  • Volume: 500 gal
  • Material: SS316 inner tank / painted galvanized steel outer jacket
  • Insulation: Polyurethane foam
  • Connections: 3" NPT female

BF1000 – 1000 Gallon

  • Volume: 1000 gal
  • Material: SS316 inner tank / painted galvanized steel outer jacket
  • Insulation: Polyurethane foam
  • Connections: 4" NPT female

Additional Features

  • Includes sensor well, drain valve, and pre-installed plugs for easy installation
  • Max Working Pressure: 200 psi
  • Warranty: 10 years
Volume
500 gal / 1000 gal
Inner tank
SS316, 1/16 in
Outer jacket
Painted galvanized steel, 1/32 in
Configurations
Without coil (0C) or with 2 internal coils (2C)
Relief valve
¾ in, CSA/UL rated 125 PSI / 210°F

Installation help and contact

Need an installer?We made it easy for you.

Listed installers are independent contractors, not MBTEK employees. They're skilled professionals familiar with our products and capable of efficient installation.

Any questions?Reach out to us.

Our team can help with product questions, sizing guidance, and next steps.