Monday, September 22, 2014

The New HS Tarm Bonus Plus Wood Boiler

Coming this fall we will be introducing a new wood boiler to our line-up, the HS Tarm Bonus Plus. This will be a great boiler for someone looking for a compact, easy to use, well priced boiler. We are calling this the little sibling of our popular HS Tarm Solo Innova boiler. It is well suited for well insulated small to mid sized homes. This boiler will also work great with a single 400 or 300 gallon tank which simplifies piping and saves space.

Bonus Light High Resolution Image copyBounus Plus Cutaway

Big Heat Small Price

The “Bonus” is affordability “Plus” no compromising with this efficient and clean burning boiler, which exceeds Europe’s Class 5 rating* . At 825 pounds, the Bonus Plus is no light-weight with regard to quality or features.

  • Round heat exchange tubes are vertically orientated and arrive standard with turbulators for increased ash separation and efficiency.
  • 28” high flue collar and short over-all boiler height allows installation in basements with low ceilings and connection to almost any thimble.
  • Reversible, full firebox width doors.
  • Firebox heat cladding for enhanced combustion.
  • High quality EBM induction blower.
  • Firebase primary air for consistent clean combustion.
  • Arrives fully assembled.
  • Exterior mounted doors to all air and exhaust passages for simple maintenance.
  • Danish engineering derives high function from simple form.
  • 20-year limited warranty.
    * Minimum boiler efficiency of 88.47%, CO<700 mg/m3, OGC ,30mg/m3, Dust <60 mg/m3

Technical Data

Technical Data
Maximum heat output BTU/hr 102,000
Firebox Volume Cubic feet 3.2
Load Door in. X in. 13¾ X 12
Max. wood length inches 20
Unit length inches 43
Unit width inches 23
Unit height inches 45
Water Volume gallons 31.7
Weight pounds 825
Flue Collar Size inches 5
Height of flue collar inches 28
* Dimensions are subject to technical alterations.

Thursday, September 18, 2014

Saturday Hours

We will be open on two Saturday’s this fall for you to come in and see our boilers.

Dates: September 20th and October 11th
Time: 9:00-12:00PM
Our Address: 4 Britton Lane
                          Lyme, NH 03768

For more information, please call: 1-800-782-9927

Friday, September 5, 2014

Fröling P4 Pellet Boiler in Connecticut Zero Energy Challenge Home

The third place winner of the 2010 Connecticut Zero Energy Challenge has the Fröling P4 32/38 installed as its main heat source.
Project datasheet link here.

Tuesday, July 1, 2014

New York State Department of Environmental Conservation Certifies Fröling FHG Wood Boiler


Media Contact: Scott Nichols,, 603-795-9102

Tarm Biomass, of, Lyme, NH is pleased to announce that the New York Department of Environmental Conservation (NY DES) has certified the Fröling FHG Model 20 wood heating boiler for use in New York State. The wood boiler is the first in nation to be certified for its emission and efficiency performance using the new Brookhaven National Laboratory Partial Thermal Storage Test Method for Wood Boilers. NY DES rigorously analyzed the Brookhaven data before accepting the results. The Brookhaven Test Method could be adopted or modeled by the United States Environmental Protection Agency as it continues to work on the Residential New Source Performance Standards for wood burning appliances (

About the Test Method:

The Brookhaven Test Method is designed to test wood burning boilers used with mass thermal storage. Brookhaven National Laboratory has succeeded in providing consumers, regulators, and the wood boiler industry with a test that is accurate while mimicking real world operation and at the same time, lowering testing costs. The test method requires testing boilers through a range of outputs and thermal demands while tracking efficiency and exhaust pollutants using firewood as the fuel. For more information, please visit:

About the Fröling FHG Wood Boiler:

The Fröling FHG 20 wood boiler is a residential wood-fired heating boiler made in Austria and imported and distributed By Tarm Biomass ( It is the first wood boiler to be tested using the Brookhaven Test Method. The Fröling FHG uses special controls including oxygen sensing and automated air adjustment to ensure clean and efficient burning of wood. The boiler produces hot water for space heating and domestic hot water heating. Results of Brookhaven's rigorous testing show that the boiler is nearly two times cleaner than limits adopted by the U.S. EPA for becoming a partner in its voluntary wood boiler testing program. The FHG is normally used within homes for central heating, where it is exempt from regulation. With New York State Certification, the boiler is also legal for use in outbuildings in New York State.

About Mass Thermal Storage:

Mass thermal storage generally consists of several hundred gallons of water in a tank or tanks that are used as a thermal battery. Thermal storage allows wood burning boilers to operate more consistently and conveniently throughout a broad range of operating conditions. Consistent high temperature operation of wood boilers is essential for emissions reduction.

Tuesday, April 15, 2014

Pictures from the Northeast Biomass Heating Expo

We want to thank everyone who came and checked out our booth at the Northeast Biomass Heating Expo. It was a very successful show and we saw many new and familiar faces. Here are some pictures of our booth and the arena. 

_DSC8250 copy

_DSC8255 copy

_DSC8265 copy


Waiting to be picked-up…

Thursday, April 3, 2014

Northeast Biomass Heating Expo April 9-11, 2014 Portland, ME

The largest Biomass Conference in the Northeast is happening next week. It will be held at the Cumberland County Civic Center in Portland, ME. This year they will have two days open to the public to visit the Exhibitor portion of the conference and it is FREE! It will be open Thursday, April 10 5-7:30pm and Friday, April 11 9-1:00pm. So come on by and visit us. We will have three booths showing our product line, including the new TX 150 commercial wood pellet/chip boiler. Click here for more information on the FREE Green Heating Fair. If you are interested in going to the conference, here is a glimpse of the program:programGlance2014

Tuesday, March 11, 2014

Our next show: The Hanover, NH Home Life Expo March 14, 15, 16, 2014

Come visit us this weekend at the Hanover, NH Home Life Expo. We will have three booths displaying our boilers and accessories. The hours will be Friday 2-8pm, Saturday 10-8pm, and Saturday 10-3pm. Click this link for more information:


Featured Installation-Four Fröling TX 150 Wood Chip and Wood Pellet Boilers

Equipment: Four Fröling TX 150 wood pellet/chip boilers connected to a 4000 gallon thermal storage tank. Each boiler has it’s own bulk store room. The rooms can either be filled with wood pellets or chips. The boilers can switch fuels with just minor equipment adjustments.
Building: The boilers are heating a new 90,000 sq. ft manufacturing building with options of heating two additional buildings up to 225,000 sq. ft.
System Installed by: Froling Energy 19 Grove Street, Peterborough, NH 03458 603-924-1001



Friday, January 17, 2014


Come visit us next week at the AHR Expo in NYC between January 21- 24. We will be located at booth # 7251. We will be available to talk to you about your boiler needs and we will also have a representative from LK Armatur to talk about valves, loading units, and heat controllers. So, come on by and say hello.

For more information on the AHR show:

Which would you choose?