Indoor particulate air pollution is a significant public health concern, and fuel-fired heating equipment has been identified as a potential contributor. This study focused specifically on liquid fuel-fired heating systems and whether they meaningfully contribute to indoor particulate matter (PM), particularly through flue barometric dampers that could release particulates during normal burner cycling.
Low-cost PM sensors were installed in eight homes, positioned near the heating appliance as well as in other key locations such as kitchens, near fireplaces, and outdoors. The primary objective was to assess the relative contribution of the liquid fuel-fired heater compared to other common PM sources.
The findings showed that indoor particulate levels were strongly influenced by cooking activities (especially frying), indoor wood combustion, and elevated outdoor PM events. In contrast, liquid fuel-fired heating systems were not identified as a significant source of indoor particulate matter.
Category Archives: Research
NORA Technical Bulletin
Biodiesel-Rated Products & Accessories
When servicing or installing equipment in homes using biodiesel or Bioheat® fuel, technicians must select components & accessories specifically rated for biodiesel lends at or above the blend being delivered—or as required by state or local regulations.
Biodiesel-rated parts including tanks, gaskets, hoses, filters, pumps, seals, and all other fuel-contact materials are engineered for long-term compatibility with biodiesel. These components resist swelling, degradation, premature wear, and fuel-related failures that can occur when conventional materials are exposed to higher biodiesel blends.
Using biodiesel-rated products not only ensures stable, reliable system performance and helps maintain fuel quality from storage to combustion, but it also future-proofs
the installation. As the industry continues to move toward higher biodiesel blends and low-carbon liquid heating fuels, proper component selection becomes essential for delivering safe, efficient, and trouble-free operation, today and for years to come
NORA’s Michael Devine Joins CFAA Governing Board
December 2, 2025 – The National Oilheat Research Alliance (NORA) announced that President Michael Devine has been elected to the Governing Board of Clean Fuels Alliance America (CFAA), a key leadership role that comes at a pivotal moment for America’s low-carbon fuels industry. The two-year term will position Devine to help shape national strategy for biodiesel, renewable diesel and sustainable aviation fuel (SAF) at a time of rapid industry growth and policy shifts for low-carbon fuels.
CFAA unites leaders from across the clean fuels value chain to promote stable markets, expanded production and long-term policy certainty. Its Governing Board plays a central role in advancing the association’s vision to exceed 6 billion gallons of biodiesel, renewable diesel and SAF by 2030.
“I’m honored to represent NORA and the liquid heating fuels industry on the Clean Fuels Governing Board,” said Devine. “Our interests are closely aligned: supporting America’s farmers, delivering practical low-carbon solutions to homes and businesses, and ensuring that renewable liquid fuels remain a cornerstone of America’s energy strategy. This position strengthens the connection between the home heating sector and the broader clean fuels community as we work together to accelerate decarbonization.”
Devine’s election underscores the growing importance of low-carbon liquid heating fuels within the broader clean fuels landscape. Through NORA, he has championed the adoption of higher blends of biodiesel in home heating oil, expanded research and field demonstrations on renewable liquid fuels, and strengthened workforce training and consumer education.
Devine joins newly elected board member Jeramie Weller of Minnesota Soybean Processors and reelected members Kent Engelbrecht of ADM, Chris Hill of the Minnesota Soybean Research and Promotion Council, Ryan Pederson of the North Dakota Soybean Council, Harry Simpson of Crimson Renewable Energy and Dave Walton of the Iowa Soybean Association.
NORA is a congressionally authorized, not-for-profit organization that works to improve the efficiency, reliability, safety and environmental performance of liquid fuel heating systems through technical research, education, and consumer outreach. Devine’s service on the CFAA Governing Board will further NORA’s mission to advance renewable, low-carbon liquid heating fuels and support a just and affordable energy transition for consumers and the industry.

NORA Releases 2026-2027 Budget for Comment
The NORA Budget Committee and the Executive Committee have reviewed the 2026 & 2027 budget and it is now being released for public comment.
At the conclusion of the public comment period, the budget will be forwarded to the Department of Energy.
Anyone interested in commenting on this should forward comments by September 30, 2025, to mdevine@noraweb.org.
For more information about NORA and its programs or services, visit the website, NORAweb.org
100% Renewable Home Heating Field Study
NORA, in partnership with Chevron and nine liquid heating fuel wholesale/retail distributors across three States, has embarked in the first of its kind, large scale field study on the use of 100% renewable heating fuels in homes. The field test will have homes running on either 80% renewable diesel blended with 20% biodiesel RD80/BD20), or 50% renewable diesel/50% biodiesel (RD50/BD50). These test site homes will be monitored through both a heating season and an off season to determine the fuels suitability for use in the home heating market.
Indoor Comfort Marketing chatted with some of the key players from NORA, Chevron, Rhoads Energy and Broco Energy about the details and goals of the project.
Click the image below to read the story.
NORA to Contribute to Exploring Biodiesel Seminar
XBX|Exploring Biodiesel series of seminars will continue August 21 at the New England Aquarium, Boston, MA.
This session, Navigating the Future, will center around the core questions that middle distillate supply chain participants must address to ensure a successful transition to low-carbon renewable biofuels, including:
- Is the production of bio-based diesel fuels scalable to meet demand in existing and emerging markets while still being economically viable?
- Is our infrastructure robust and reliable?
- Are we effectively communicating our decarbonization story to the public?
- What is the cost of inaction?
NORA, whose mission is to remove carbon emissions from home heating, will be represented on two panel discussions.
Nora’s president, Michael Devine, will be part of a panel discussion titled “Operational Integration, Getting Ready to Roll” about preparing customer-facing representatives to effectively communicate the benefits of low-carbon liquid fuels to end users and what, if any, operational transitions might be needed.
Dr. Jenny Frank, NORA Research Associate, will contribute to the panel discussion “Monetizing the Transition” which will examine the financial aspects of adopting advanced renewable fuels.
Registration and more detailed information for August 21 in Boston can be found here.
Additionally, XBX|Navigating the Future will host another seminar on October 15 in Lancaster, PA.
More about XBX at exploringbiofuels.com
NORA 2024 Technology Workshop
NORA’s Workshop will highlight the research work being done by NORA as well as an international perspective through the participation of Eurofuel.
Established in 2000, NORA mission focuses on Energy Efficiency, Environmental Responsibility, Safety, Research & Development and Professional Education, with particular emphasis on transitioning liquid heating fuels and appliances to a low-carbon source of heat and hot water.
The key purpose of this workshop is to develop a shared vision of the focus of NORA’s activities for the coming year.
The 2024 Technology Workshop will offer presentations and attendee participation in a workshop setting in the following areas:
- Priorities of the Liquid Heating Fuels industry in Europe
- Building Codes Updates
- DOE Efficiency Standards
- Biodiesel: Field & Lab Results and Standards Updates
- Renewable Diesel/HVO: Its application in heating, NORA Testing, European Experience and a Proposed Fuel Test
- Net-Zero Carbon Buildings
- NORA R&D Priorities
Dr. Thomas Butcher, NORA’s Director of Research offered this about the upcoming workshop, “With NORA’s mandate to advance efficiency and environmental responsibility, this workshop provides the opportunity to collaborate with the industry’s leaders and European partners to create a pathway for continued carbon reduction and more efficient building heating. Working with the Southern New England Energy Conference (SNEEC) will provide a stimulating environment for our workshop, and we encourage all SNEEC attendees and other interested parties to attend.”
Registration for the NORA Technical Workshop is included in the Southern New England Energy Conference registration.
NORA Releases 2024-2025 Budget for Comment
The proposed 2024 and 2024 biennial budget for the National Oilheat Research Alliance has been under development for several months. The NORA Finance Committee and the Executive Committee have reviewed the 2024 & 2025 budget and it is now being released for public comment.
At the conclusion of the public comment period, the budget will be forwarded to the Department of Energy.
Anyone interested in commenting on this should forward comments, by September 1, 2021, to mdevine@noraweb.org.
. For more information about NORA and its programs or services, call 703-340-1660 or visit the web site, NORAwe

