Skip to content
My Account
Manage your account
Track orders, manage your details, and sign in without a password.
- No password required
- We send a secure 6-digit code to your email
- New email? Signing in creates your account automatically
FREE SHIPPING
APOLLO DHW120 MAX - Stainless Combined Indirect Water Heater Tank
$3,930.08
$3,144.06
20% off at checkout
Shipping
$668
Free
Add this item to cart, then split the order across credit cards, debit + credit, or company + personal cards before checkout.
Choose your tank size
Pay with multiple cards
Add your items to cart, then choose split payment in the cart summary. You can divide the order across two or more payment methods before checkout.
- Two credit cards
- Debit + credit
- Company + personal card
You have 15 days to finish the split-payment checkout. Credit card repayment terms stay between you and your card issuer.
- Space-Saving 2-in-1 DesignCleverly integrates a 95-gal Domestic Hot Water tank and a 25-gal Buffer Tank into a single unit.
- Premium 316 Stainless SteelEngineered with thick, high-grade stainless steel for exceptional durability and corrosion resistance.
- Heat Pump OptimizedThe built-in buffer tank prevents temperature spikes and aids in the winter defrost cycle for hydronic systems.
- High-Efficiency InsulationFeatures 2-inch thick insulation to minimize heat loss, reduce condensation, and save energy.
- Seamless System IntegrationDesigned without an inner coil for perfect compatibility with external plate heat exchangers or Hydro Smart systems.
Product details
STAINLESS COMBINED INDIRECT WATER HEATER TANK WITH BUFFER – SPACE-SAVING ALL-IN-ONE DESIGN
The APOLLO DHW120 MAX is a combined domestic hot water (DHW) and buffer tank, designed for the APOLLO heat pump systems. Built in stainless steel 316, it delivers high durability, excellent insulation, and optimized system performance for residential or commercial installations.
Key Benefits
- All-in-one DHW + buffer tank to save space and simplify installation
- Buffer (25 gal) for improved heat pump performance and defrost cycles
-
Buffer prefilled with 25 gal. 100% propylene glycol
- High insulation (2"–3") to reduce heat loss and prevent condensation
- Stainless steel 316 construction for long-lasting corrosion resistance
-
Domestic cold water inlet APOLLO patent design for 20% more hot water
Specifications
- DHW Volume: 95 gal (359 L)
-
Buffer Volume: 25 gal (94 L) – Prefilled with 100% Propylene Glycol
- Material: Stainless Steel 316 (inner tank & coil)
- Connections: DHW Inlet/Outlet: 3/4", Hydro Smart Inlet/Outlet: 1", Buffer connections: 1"
- Insulation: 2" sides / 3" top polyurethane foam
- Pressure Rating: 200 psi
- Relief Valve: 120 psi
- Drain Valve: Included
- Warranty: 10 years
- Application: Residential & commercial heat pump systems
Customer Success Stories
Since installing the buffer tank, I've cut glycol costs, reduced electricity usage, and improved overall system efficiency. It keeps my home at a stable temperature overnight and even gives me peace of mind during power outages. It's like having a thermal battery that optimizes everything.
The Perfect Alternative to Natural Gas
High efficiency for heating, cooling, and hot water with low electric bills
The Perfect Alternative to Natural Gas
APOLLO DHW120 MAX
Main Features
-
Compact & Multifunction
Save space with a dual-function design for both domestic hot water and buffer storage.
-
Durable Construction
Built with high-quality stainless steel 316 for unmatched durability. Compatible with Hydro Smart systems or plate heat exchangers (PHE) for efficient heat transfer.
-
High Insulation
Featuring 2" polyurethane foam insulation to prevent condensation and minimize heat loss.
-
Includes 24 Gallons of Glycol
Buffer volume filled with 100% Propylene Glycol for optimal heat pump performance and defrost cycles.
-
Ample Capacity
Offers a generous 95-gallon domestic hot water volume and a 25-gallon buffer tank, ensuring ample supply for both heating and hot water needs.
-
Reliable Performance
Comes with a robust 10-year warranty, ensuring reliable and worry-free operation.
Space-Saving Design
The APOLLO DHW120 MAX combines both DHW and Buffer tanks in one unit. Ideal for space-saving installations, perfect for residential and commercial use.
Durable and Efficient Heating
Built with high-quality stainless steel 316 (1/16" thickness) and a painted galvanized steel outer jacket (1/32" thickness). Works seamlessly with Hydro Smart systems or plate heat exchangers for reliable, energy-efficient hot water.
Optimal Performance
Designed for APOLLO Heat Pumps, the buffer volume is prefilled with 24 gallons of 100% Propylene Glycol, helping manage low or no-load conditions, preventing temperature spikes, and aiding in winter defrost cycles.
Advanced Features
Includes 1-1/4" stainless steel valves for main input/output, 2" polyurethane foam insulation, a drain valve, and a pressure relief valve rated at 125 psi for longevity and optimal performance.
Technical specifications
Full specifications for the APOLLO DHW120 MAX combined domestic hot water and buffer tank.
| Inner Tank Material | Stainless Steel 316, 1/16" thickness |
|---|---|
| DHW Volume | 95 gallons |
| Buffer Volume | 25 gallons (prefilled with 24 gallons of glycol) |
| Outer Jacket Material | Painted Galvanized Steel, 1/32" thickness |
| Insulation | 2" polyurethane foam on the side, 3" on top |
| Connections | NPT female |
| Pressure Relief | 125 psi, 210°F (CSA/UL certified) |
| Compatibility | Hydro Smart system or Plate Heat Exchanger (PHE) |
Use a family-specific bottom-tabs section later if this product needs comparison tables, grouped specs, or product-handle logic.
Product documents
Technical documentation for the APOLLO DHW120 MAX.
DHW120 Specifications
Full technical specifications for the APOLLO DHW120 MAX combined tank.
