Piney Manufacturing ENVIRO CHIP-500
Piney Manufacturing ENVIRO CHIP-500 is a non-catalytic hydronic heater from Piney Manufacturing certified at 5.4 g/hr particulate emissions with 73% HHV efficiency (previously certified, no longer in production).
Previously certified (out of production). This model appears in the EPA Certified Wood Heater Database but is no longer on the current certified list, which usually means it is no longer manufactured. The specifications below are its certified figures, kept for reference and for owners of installed units. Browse currently certified heaters for models sold new today.
| Appliance type | hydronic-heater |
|---|---|
| Combustion technology | Non-Catalytic Stove |
| Certified fuel | Cord Wood |
| Covered model numbers | ENVIRO CHIP-500 |
| Emission rate | 5.4 g/hr |
|---|
| Efficiency (HHV) | 73 % |
|---|
| Heat output (high) | 280000 BTU/h |
|---|
| 25C tax credit eligible (≥75% HHV) | No |
|---|---|
| 2020 NSPS compliant | No |
| Currently in production | No |
What space does the Piney Manufacturing ENVIRO CHIP-500 suit?
- Certified burning Cord Wood — the test fuel closest to real-world firewood.
Similar hydronic heaters
- HeatMaster Furnaces G Series G10000 (0 g/hr)
- Heatmaster Furnaces Inc. (SteelTech Inc.) G Series G10000
- Fröling Heizkessel und Behälterbau Ges.m.b.H P4 Unit 80
- Greentech Manufacturing Crown Royal RS7400E (8 g/hr)
- Central Boiler Inc.- WoodMaster Classic Edge 760.1
- Heatmor Manufacturing 350X (9.2 g/hr)
Frequently asked questions
Is the Piney Manufacturing ENVIRO CHIP-500 EPA certified?
The Piney Manufacturing ENVIRO CHIP-500 holds EPA certification number n/a but is no longer on the current certified list — it is previously certified, which usually means the model is out of production. Already-installed units are unaffected by that status in most jurisdictions.
What is the Piney Manufacturing ENVIRO CHIP-500's emission rate?
The Piney Manufacturing ENVIRO CHIP-500 is certified at 5.4 grams of particulates per hour (tested with cord wood). Real-world emissions depend heavily on fuel moisture and operation — the lab figure assumes seasoned fuel and correct air settings.
Does the Piney Manufacturing ENVIRO CHIP-500 qualify for a federal tax credit?
No — the federal 25C credit for biomass stoves was terminated for property placed in service after December 31, 2025. The Piney Manufacturing ENVIRO CHIP-500's certified efficiency is 73% HHV, which did not meet the credit's ≥75% HHV threshold while it existed. State and local incentive programs may still apply — check your state energy office and air district.
Sources
- cfpub.epa.gov (retrieved 2026-07-23)