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DOE Heating Capacity (BTU)

Also referred to as Gross Output, this is the output of a boiler after accounting for combustion efficiency. We recommend sizing hot water boilers based on the DOE Heating Capacity.

40000 - 59999 (1)

60000 - 79999 (2)

80000 - 99999 (2)

100000 - 119999 (4)

120000 - 139999 (1)

140000 - 159999 (4)

180000 - 199999 (2)

220000 - 239999 (1)

260000 - 279999 (1)

360000 - 379999 (1)

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Net I=B=R Capacity (BTU)

I=B=R, also referred to as Net Output or AHRI Capacity, is the rated heat output of a boiler after accounting for combustion efficiency, piping loss, and an extra pickup factor. We recommend sizing steam boilers based on the I=B=R rating.

40000 - 59999 (1)

60000 - 79999 (2)

80000 - 99999 (6)

100000 - 119999 (1)

120000 - 139999 (4)

140000 - 159999 (2)

180000 - 199999 (1)

240000 - 259999 (1)

320000 - 339999 (1)

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Maximum Input Capacity (BTU)

The Maximum Input Capacity describes how quickly the appliance will use fuel when delivering it's maximum capacity. The units may change depending on the fuel being used.

50000 - 69999 (1)

70000 - 89999 (2)

90000 - 109999 (1)

110000 - 129999 (5)

130000 - 149999 (1)

150000 - 169999 (3)

170000 - 189999 (1)

190000 - 209999 (2)

230000 - 249999 (1)

290000 - 309999 (1)

390000+ (1)

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AFUE (%)

AFUE (Annual Fuel Utilization Efficiency) measures the efficiency of combustion equipment over the entire heating season, and is calculated by dividing the amount of energy that is actually heating your home by the total energy contained in the fuel used by the boiler/furnace. Learn More

92 (1)

93 (3)

95 (14)

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Challenger Combi (1)

Challenger Solo (5)

Instinct (5)

Prestige Excellence (1)

Prestige Solo (7)

DHW Production

DHW (Domestic Hot Water) is potable water for uses other than space heat. Some boilers are able to provide DHW "out of the box", while others can do so with the purchase of optional accessories.

No (15)

Yes (4)

Product Height (Inches)

23 - 24 (2)

25 - 26 (4)

27 - 28 (3)

33 - 34 (2)

39 - 40 (8)

Product Width (Inches)

17 (6)

19 (5)

21 (5)

24 (3)

Product Depth (Inches)

9 (6)

16 (5)

17 (5)

23 (3)

Triangle Tube PA250 - 222K BTU - 95% AFUE - Hot Water Gas Boiler - Direct Vent

Model: PA250

Wall Mounted, Condensing Boiler with Modulating Gas Valve. Ships Packaged. Ratings: 240K BTU Gross Input, 222K BTU DOE Capacity, 193K BTU Net IBR Capacity. Includes Circulator.

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$4,689.00

Only 5 In-Stock

Free Shipping & Lift Gate

*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.

2% Check Discount

Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.