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GAS FIRED HOT WATER BOILERS

Patterson-Kelley boilers are backed by over 122 years of heat transfer experience. In a revolutionary advance, Patterson-Kelley now combines full-modulation burner control with our time-tested modular hot water boiler design. The result is “modular full-modulation” - Modu-Fire. Now you can achieve high efficiency performance at part-load, exactly where you spend most of your operating hours.Though weather differs from city to city, one thing is true everywhere: nearly all of your operating hours are spent at part-load! Modu-Fire provides the highest part-load efficiencies possible without generating corrosive condensate inside the boiler. The Modu-Fire requires Category II venting as it is defined in ANSI Z21.13/CSA 4.9 latest edition. Click on the Modu-Fire below to see how you can start saving immediately!
PK Modu-Fire Modulating Boiler 5 to 1 Turndown Up to 88% Efficiency 5-10-5 Warranty* Requires Category II venting
 Track partial loads with smooth 5:1 turndown !!!
This new hybrid boiler combines the best of our earlier designs with a new generation of burner and control technology,radically simplified, then made battleship tough. High efficiency, load tracking performance made rugged, dependable, uncomplicated. That's Modu-Fire!
HIGH PART LOAD EFFICIENCY CAPTURES UP TO $0.90 OF EVERY FUEL DOLLAR AS COMFORT HEAT
Modu-Fire efficiency is in the range defined by the blue triangle. Exactly where will depend on your system's operating water temperature (which constantly changes with outdoor weather conditions). Typically 2/3 of total seasonal operating hours are spent in the red zone. The intersection of these two zones shows the range of efficiencies you will achieve with your new Modu-Fire boiler.
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SMALL SIZE, BIG OUTPUT
The P-K Thermific boiler is so small and compact that even the largest model can be moved through a 30" doorway. Rated at up to 2,000,000 BTU Input, multiple units can replace larger boilers. P-K Thermific Hot Water Boiler

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Easy access for retrofit. |
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Simplified installation and low installation costs. |
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Quick return on investment. |
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Lower operating costs and lower fuel bills. |
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Low maintenance. |
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10 year guarantee. |
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Fast shipment. |
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Quiet operation. |
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Modular installation. |
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Fire-tested before shipment. |
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Meets all standard codes. |
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Available sealed combustion design can eliminate large air louvers and stacks. |
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Rebates and reduced code requirements may be available with sealed combustion option.
P-K MACH Series Boiler

300,000 BTUH INPUT to 2,000,000 BTUH INPUT
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Achieve up to 99% Efficiency
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Full Modulation Burner with 5:1 Turndown
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Designed for Full Condensing Service
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Aluminum Alloy Metallurgy for Superior Corrosion Protection
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Low O2/CO/NOx standard
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Whisper Quiet |
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