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PHOENIX 35, Compact Pellet Boiler, 120K BTU
$8,640.45
$6,912.36
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$1,469
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- Up to 96% efficiencyHigh-efficiency pellet heat.
- 18 or 35 kW outputTwo Phoenix capacities.
- 240 lb built-in hopper3 to 10 days autonomy.
- Self-cleaning operationSimpler routine maintenance.
- App-ready controlRemote module compatible.
Product details
Phoenix Pellet Boiler – 120,000 BTU / 35 kW
High-efficiency pellet boiler designed as a compact, powerful, and technologically advanced heating solution for larger homes, workshops, garages, and commercial hydronic heating applications.
With up to 96% efficiency, a large built-in pellet hopper, automatic fuel modulation, and remote control capability, the Phoenix boiler delivers strong heating performance with simple maintenance.
Key Benefits
- High-efficiency performance with up to 96% efficiency
- 120,000 BTU / 35 kW heating capacity for areas up to 4,500 ft²
- Compact mono-block design with the pellet tank built directly over the heat exchanger
- Integrated self-cleaning system for easier maintenance
- Large 240 lb hopper capacity for 3 to 10 days of autonomy, depending on energy demand
- Programmable operation so you can decide when the boiler turns on or off
- Smart remote control module with Android and Apple app access
- Automatic fuel modulation for efficient operation and low emissions
- Made in Europe using an ISO-9001 automated manufacturing process
- Tested before shipping with vacuum pressure and water testing
- 2-year parts warranty included
Specifications
- Heating Capacity: 120,000 BTU / 35 kW
- Recommended Area: Up to 4,500 ft²
- Efficiency: Up to 96%
- Fuel Type: Wood pellets only
- Hopper Capacity: 240 lbs of pellets
- Autonomy: 3 to 10 days, depending on energy demand
- Weight: 794 lbs
- Dimensions: 24.75" W x 31.15" D x 59.5" H
- Exhaust Pipe: 4" / 102 mm
- Minimum Chimney Diameter: 6" / 160 mm
- Max Water Temperature: 90°C / 194°F
- Working Pressure: 0.5 to 1.0 bar / 7.25 to 15 PSI
- Emissions: Low CO emissions, less than 300 mg/m³
- Origin: Made in Europe
- Warranty: 2-year warranty on parts
Customer Success Stories
Hey, my name is Eric from Michigan with my MBTE 50 Phoenix boiler. This is the 170K unit. I'm using this for in-floor heat in my Barndominium, which is a 3,000 square foot home here in Michigan, which gets down to 5 degrees. And this just keeps up with my home. It does no problem heating a big two-story 3,000 square foot home. I love it. If you're looking to be off-grid, this is a good option for you.
Keeps my home warm with no problem, even at 5 degrees
Hear how Eric from Michigan heats his 3,000 sq. ft. Barndominium with a Phoenix pellet boiler.
Keeps my home warm with no problem, even at 5 degrees
Phoenix Pellet Boiler
Main Features
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96% pellet efficiency
Converts wood pellets into hydronic heat with up to 96% efficiency and low CO emissions.
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18 or 35 kW heating choices
Choose Phoenix 18 for up to 2,500 ft2 or Phoenix 35 for up to 4,500 ft2 heating applications.
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Built-in hopper autonomy
The integrated 240 lb pellet hopper supports 3 to 10 days of autonomy per filling, depending on demand.
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Automatic startup and management
Automatic startup and management simplify daily operation for residential, workshop, garage, and light commercial hydronic systems.
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Easier self-cleaning maintenance
Integrated self-cleaning support helps keep routine maintenance straightforward and boiler performance consistent.
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Low-emission pellet heat
CO emissions are rated below 300 mg/m3, with A-class wood pellets recommended for stable operation.
Compact mono-block layout
The pellet tank is built directly over the heat exchanger, keeping the Phoenix footprint compact for utility rooms, garages, and mechanical spaces.
Remote app-ready control
A smart remote control module enables Android and Apple app access for convenient boiler monitoring and adjustments.
Low-maintenance pellet heating
Automatic fuel modulation, built-in hopper capacity, and self-cleaning support reduce daily handling compared with manual solid-fuel systems.
Hydronic heating fit
Designed for water-based heating systems with operating pressure from 0.5 to 1.0 bar and maximum water temperature of 90 C / 194 F.
Technical specifications
Comparison specifications for Phoenix 18 and Phoenix 35 pellet boilers, based on the official Phoenix Boiler Specifications sheet.
| Product family | Phoenix 18 PWB18KW / Phoenix 35 PWB35KW wood pellet boiler |
|---|---|
| Output and heated area | Phoenix 18: 18 kW / 61,400 BTU, up to 2,500 ft2; Phoenix 35: 35 kW / 120,000 BTU, up to 4,500 ft2 |
| Efficiency and emissions | 96% efficiency; CO emissions below 300 mg/m3 |
| Hopper and autonomy | 109 kg / 240 lb pellet hopper; average autonomy per filling: 3 to 10 days |
| Dimensions | Phoenix 18: 600 W x 795 D x 1465 H mm / 23.6 W x 31.3 D x 57.6 H in; Phoenix 35: 630 W x 791 D x 1510 H mm / 24.75 W x 31.15 D x 59.5 H in |
| Weight | Phoenix 18: 320 kg / 705 lb; Phoenix 35: 360 kg / 794 lb |
| Chimney and connections | 12 Pa chimney draft; minimum chimney diameter 160 mm / 6 in; water input/output 1 1/4 in; exhaust 80 mm / 3 in on Phoenix 18 and 102 mm / 4 in on Phoenix 35 |
| Operating limits and warranty | Water pressure 0.5-1.0 bar / 7.25-15 PSI; maximum water temperature 90 C / 194 F; 2-year parts warranty |
Use A-class wood pellets only and follow the installation guide for chimney, clearance, pressure, and safety requirements.
Product documents
Download the current Phoenix installation guide and specifications sheet.
Phoenix Installation and Maintenance Guide
Installation, startup, exploitation, and maintenance guidance for Phoenix pellet boilers.
Phoenix Boiler Specifications
Official technical specifications for Phoenix 18, Phoenix 35, and Phoenix 50 pellet boilers.
