HP 21

Currently certified

EPA rows

Retail names in the model line

These are the names split from EPA's model cell. They are aliases for this line, not separate listings.

• HP 21

Other model lines from this manufacturer

• ComfortBilt HP22N, HP22, and HP22i Insert Currently certified
• ComfortBilt HP50S Currently certified
• HP 40 Currently certified
• HP 61 Currently certified
• HP41 - Alpine Currently certified
• HP42-Alpine Currently certified
• HP75C Currently certified
• ComfortBilt HP54 Previously certified
• ComfortBilt HP55 Previously certified
• HP22 ComfortBilt Previously certified

Nearest model lines by EPA figures

Nearest means the smallest absolute difference on that EPA figure, among other Pellet Stove model lines that list it. Ties are ordered by model name.

Emission

• 25-CBPAH, 55-SHPCBPAH, 55-TRPCBPAH — 1.5 grams per hour
• 509-1 Optimum — 1.5 grams per hour
• 6039, 6039 T, 6039 HF, 6039 TP, 6041, SP6000 — 1.5 grams per hour
• Breckwell SP1000, Big E — 1.5 grams per hour
• ComfortBilt HP54 — 1.5 grams per hour

HHV efficiency

• 55-SHPCB120, 55-TRPCB120, and 25-CB120 — 76 percent
• 5780-E, AP5780-E, VG5780-E, SP5780-E, SP58-E — 76 percent
• AGP Insert — 76 percent
• AGP PS — 76 percent
• BayWin Free Standing, BayWin Insert, BWS-BD, BWS-GD, BWI-BD, BWI-GD — 76 percent

Heat output

• Quadra-fire Classic Bay 1200i-C — 10,182–33,925 BTU/hr
• Quadra-Fire CAB50-C, ECO CAB50-C, ECO PS50-C — 7,488–36,591 BTU/hr
• Slimquadro 9 — 11,356–32,691 BTU/hr
• P158, P158 D, and P158 T — 12,482–31,491 BTU/hr
• Harman P43 — 12,600–31,300 BTU/hr

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