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Wood Pellet Boilers
Maxim Wood Pellet Boilers

Welcome to the best way to heat with wood pellets!

FREEDOM TO DO MORE – Tending an indoor wood pellet stove can be labor intensive and require constant loading and maintenance. With a Maxim outdoor pellet boiler, you’ll have more time to do things that you want because of the large integrated hopper and extended burn times.

GET IN YOUR COMFORT ZONE – The Maxim gives you whole house comfort, not just one room. Because it uses your existing heating system to deliver the heat, you can set the thermostat where you want in different rooms. You can even heat other buildings like your garage.

PEACE OF MIND – Keep the fire outside and eliminate traditional indoor stove hazards. Burning indoors is inherently dangerous as there is a threat of a fire and carbon monoxide buildup.

IMPROVED INDOOR ENVIRONMENT – The mess stays outside with an outdoor wood pellet boiler. Anyone that has ever heated with an indoor pellet stove is familiar with the smoke, dust, ashes, odors and soot that often occur.

Maxim Brochure Maxim Brochure Maxim Cut-away Image


Independent Power is Maine’s oldest Maxim dealer serving customers all across the state. Contact us to learn more.

Stay Connected


Stay connected to the boiler that saves you money on your heating bill from almost anywhere in the world. Adding the optional FireStar XP wi-fi module keeps you in constant contact with your outdoor wood pellet furnace if you’re away. The FireStar XP wi-fi module can even send you reminders such as when to add fuel.

  • View water and burner temperatures, auger run time and furnace mode in real-time with the easy-to-read interface on your iPhone or other web-enabled device.
  • View performance and operational data charts and graphs over a given period of time.
  • Choose to have texts or emails sent to most any web-enabled device.
Firestar XP with E-Link Technology

How It Works

Maxim Wood Pellet Boiler System

The Maxim outdoor wood pellet boiler is installed outside, next to your home like a central air conditioning unit or up to 500 feet away, and works with any existing heating system. A water jacket surrounds the furnace firebox and heated water is circulated to the home or building through underground insulated pipes. Water-to-air or water-to-water heat exchangers or direct circulation conveys the heat into the structure’s forced air furnace, boiler or radiant floor heating system. This allows for normal thermostatic control of temperature for safe, even and comfortable heat.

Technical Diagrams

Existing Boiler Direct Plumbed Forced Air System Radiant Heat Swimming Pool/Hot Tub Installation

Parts & Accessories

There is no need to run around looking for parts to hook up your system. We carry a complete selection of parts and accessories to simplify the installation and maintenance of your system, including a 48-bushel hopper for increased fuel storage capacity with an optional auxiliary auger for transfer.


Your installation begins with ThermoPEX insulated piping. ThermoPEX consists of two 1-inch oxygen barrier Central PEX pipes (supply and return) that are insulated with high-density urethane insulation and thick, durable, waterproof, UV-protected polyethylene outer jacket. ThermoPEX only needs a narrow trench for installation.

ThermoPEX saves energy and maximizes efficiency. Heat loss is virtually unmeasurable, less than 1 degree F over 100 feet. Greater system efficiency maximizes the delivery of heat from each pound of wood pellets.

ThermoPEX Brochure ThermoPEX Installation CB Parts Catalog

Installation & Operation

DIY Project – The installation is easier than you might think and can be completed in about a day using the installation manual. We provide a customized hookup kit for the do-it-yourselfer that includes all of the materials you need to get from the pellet boiler into your home. And to make it even easier, we’ll give you lots of expert technical advice along the way.

Hire a Contractor – You’re welcome to use your own contractor to do the installation. Or we can refer an installer we know. We’ll make it quick and easy for your installer by providing you with a customized hook up kit that saves him time on the installation and saves you money. We’re always available to answer any technical questions your installer may have.

Maxim Owner's ManualMaxim InstallationPerforming A Water Test Maxim Firestar Controller

The Maine Department of Environmental Protection adopted rules in 2007 related to outdoor wood and wood pellet boilers. Chapter 150 establishes requirements for emission standards, siting criteria and labeling for all outdoor wood and wood pellet boilers.


Finance Now!

The Central Boiler Maxim is a high quality, whole house heating system with a very affordable price. Call us for a customized quote that includes a parts list for hookup so you know exactly what your bottom line will be.



Let's Talk!

Call: 207-946-4444