Hearth and Home Technologies Quadra-Fire 57ST-ACC-C
Hearth and Home Technologies Quadra-Fire 57ST-ACC-C is a non-catalytic wood stove from Hearth and Home Technologies certified at 1.8 g/hr particulate emissions with 74% HHV efficiency and a 12,772–38,284 BTU/h output range.
| Appliance type | wood-stove |
|---|---|
| Combustion technology | Non-Catalytic Stove |
| Certified fuel | Crib Wood |
| Covered model numbers | Quadra-Fire 57ST-ACC-C |
| Emission rate | 1.8 g/hr |
|---|---|
| Carbon monoxide | 2.5 g/min |
| Efficiency (HHV) | 74 % |
|---|
| Heat output (low) | 12772 BTU/h |
|---|---|
| Heat output (high) | 38284 BTU/h |
| Firebox volume | 2.95 cu ft |
| 25C tax credit eligible (≥75% HHV) | No |
|---|---|
| 2020 NSPS compliant | Yes |
| Currently in production | Yes |
| EPA certification number | 99-17 |
What space does the Hearth and Home Technologies Quadra-Fire 57ST-ACC-C suit?
- Its 38,284 BTU/h peak output covers roughly 1,100–1,550 sq ft at the 25–35 BTU/h-per-square-foot rule of thumb — see the sizing calculator to adjust for your insulation and climate.
- The 2.95 cu ft firebox puts it in the mid-size home class.
- Rough fuel use: about 1.9 cords per season at the midpoint of its output range (8 burn-hours/day, 150-day season, 22 MMBtu/cord — see methodology).
- Certified burning Crib Wood .
Similar wood stoves
- Pacific Energy Fireplace Products Limited Super LE (1.8 g/hr)
- Morso Jernstoberi A/S 6140 B (0.67 g/hr)
- Blaze King Industries King KE40 (2) (1 g/hr)
- Blaze King Industries King KE40 (3) (1 g/hr)
- MF Fire NOVA 2 (1.9 g/hr)
- Travis Industries 42 Apex NexGen-Hybrid (1.2 g/hr)
Frequently asked questions
Is the Hearth and Home Technologies Quadra-Fire 57ST-ACC-C EPA certified?
Yes, the Hearth and Home Technologies Quadra-Fire 57ST-ACC-C is on the EPA's current list of certified wood heaters (certification number 99-17) and meets the 2020 NSPS Step 2 emission limits.
What is the Hearth and Home Technologies Quadra-Fire 57ST-ACC-C's emission rate?
The Hearth and Home Technologies Quadra-Fire 57ST-ACC-C is certified at 1.8 grams of particulates per hour (tested with crib wood). Real-world emissions depend heavily on fuel moisture and operation — the lab figure assumes seasoned fuel and correct air settings.
How many square feet can the Hearth and Home Technologies Quadra-Fire 57ST-ACC-C heat?
Roughly 1,100–1,550 sq ft, estimated from its 38,284 BTU/h peak output at 25–35 BTU/h per square foot. Insulation, climate, ceiling height, and floor plan move this figure substantially in both directions.
Does the Hearth and Home Technologies Quadra-Fire 57ST-ACC-C 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 Hearth and Home Technologies Quadra-Fire 57ST-ACC-C's certified efficiency is 74% 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)