Evergreen® Pro
Gas Boiler

The Evergreen® Pro boiler extends comfort levels to every area of your property for the long run. The Evergreen® Pro is perfect for residential applications or light commercial and single or multi-unit installations with ZoneStacking up to 24 programmable zones. It’s everything you want in heating: quiet operation, aesthetically pleasing design, floor standing or wall mount options, environmental sustainability, heating comfort while optimizing energy savings.
Features
FLEXIBLE SIZING
Available in 5 Sizes: 110, 155, 220, 299, 399 MBH. Space-saving and compact—can be floor standing or wall mounted (optional wall mount kit for 220-399 sizes)
DURABLE DESIGN
Stainless Steel Fire Tube Heat Exchanger with non-metallic base. Sleek, modern design adds aesthetic value to property.
USER-FRIENDLY CONTROL
Quick setup with 10 heating system presets and an easy to use setup wizard for single and multiple boiler installation; Modbus® to BMS connectivity.
HIGH EFFICIENCY
95% AFUE (110–299); 96.5% Combustion Efficiency (399); SmartSequencing maximizes energy across all boilers on system.
VERSATILE HEATING
Easy heat, effortless comfort to all areas of the home—from your living room to your pool. ZoneStacking—up to 24 programmable zones (multiple boiler system).
EXTENDED WARRANTY
5 Years Extended Warranty on service parts with boiler registration (Must be within 90 days of installation, residential only.)
Additional Highlights
- Modulating Condensing Boiler
- 4 Pump/Auxiliary Outputs (Example: 1 boiler loop pump +3 zone pumps)
- Up to 8 Multiple Boiler Control with lead/lag rotation
- Each input can be assigned to a priority (Up to 3 Priorities)
- Multiple Inputs can be assigned one priority (Zone Based Control)
- All Lag Boiler Inputs and Output can be used
- 0-10 Volt Input (modulation or set point)
- Configurable Auxiliary Input/Output System
- Boiler Circulator Included (ECM version with 110-155)
SEE In ACTion
Evergreen Boiler – Sizes 110-155
Evergreen Boiler – Sizes 220-399
big on warmth, low on energy use
Engineered for comfort, designed for efficiency
Certified ENERGY STAR® and heat pump ready, this high-efficiency boiler delivers powerful, eco-friendly performance while keeping energy costs low.


Technical Specs
MODELS | AFUE (%) | CSA INPUT (MBH) | NET (MBH) | DOE HEATING CAP. (MBH) | VENT SIZE (IN.) |
---|---|---|---|---|---|
EVG-110 | 95 | 110 | 88 | 101 | 3 |
EVG-155 | 95.1 | 155 | 124 | 143 | 3 |
EVG-220 | 95 | 220 | 179 | 206 | 3 or 4 |
EVG-299 | 95 | 299 | 243 | 280 | 4 |
EVG-399 | 96.5* | 399 | 333 | 383* | 4 |
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