Data / ENERGY STAR / Radiant
Radiant ENERGY STAR certified products: 9 models in 2 categories
Radiant has 9 ENERGY STAR certified products across 2 categories on the EPA's list as read on November 4, 2026. Its newest certification is SFK 56 in gas water heaters, dated April 23, 2025, and its largest category is boilers with 7.
SpecStream is the live web data engine for teams and agents. It reads the EPA's ENERGY STAR certified product lists, keyed on the ENERGY STAR Unique ID, and this page is that reading. Ask for the products you track by category, brand or rating, and each new certification arrives in your sheet, CRM, Slack or agent as the EPA publishes it.
- 9Certified products
- 2Categories
- April 23, 2025Newest certification
- Boilers, 7Largest category
Certified products by category
Counts and the latest certification date in each category. Categories with several models link to the brand's page for that category.
| Category | Certified products | Latest certification |
|---|---|---|
| Boilers | 7 | September 14, 2022 |
| Gas water heaters | 2 | April 23, 2025 |
Newest Radiant certifications
The 9 most recent certifications. Each row links to the product's record in the EPA's open data portal.
| Category | Model | ENERGY STAR ID | Certified | Source |
|---|---|---|---|---|
| Gas water heaters | SFK 56 | 4016238 | April 23, 2025 | data.energystar.gov |
| Gas water heaters | SFK 55 | 4016237 | April 23, 2025 | data.energystar.gov |
| Boilers | R2K 24 | 2401468 | September 14, 2022 | data.energystar.gov |
| Boilers | R2K 34 | 2401467 | September 14, 2022 | data.energystar.gov |
| Boilers | R2K 55 | 2401465 | September 14, 2022 | data.energystar.gov |
| Boilers | R2KA 24/20 | 2401464 | September 14, 2022 | data.energystar.gov |
| Boilers | R1K 34/B | 2401463 | September 14, 2022 | data.energystar.gov |
| Boilers | R2KA 34/20 | 2401462 | September 14, 2022 | data.energystar.gov |
| Boilers | R1K 55 | 2401461 | September 14, 2022 | data.energystar.gov |
Updated November 4, 2026. Read from ENERGY STAR certified product data, US Environmental Protection Agency (data.energystar.gov). Public domain data from the US EPA and the US Department of Energy. Products are listed as the EPA publishes them on the date this page was read, and the EPA can revise or withdraw a certification. A product is counted once, under the most specific list that holds it. For heat pumps each ENERGY STAR ID is one outdoor and indoor unit combination, so a model number can repeat. Brand names are as published. This page uses EPA data and is not endorsed or certified by the EPA or ENERGY STAR. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.