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- Space Heating
Space Heating
HTP's space heating boilers provide ultimate comfort and the best overall efficiency ratings while keeping maintenance and operating costs to a minimum. With a HTP high efficiency boiler you can achieve the heat your family or business needs while also saving money and energy.
Residential
- • Elite Ultra Wall and Floor New
- • Elite Fire Tube Ultra New
- • Pioneer
Commercial
- • Elite Ultra Duo New
- • Elite XL
Accessories
- •ELU/EFTU 0-10V Clip-In Board New
- • ELU/EFTU Cascade Kit New
- • ELU/EFTU Common Vent Kit New
- • Elite XL Stack Rack New
- • Elite XL System Flow Kit New
- • HTP Link New
- • ModBus BACnet
- • The Universal Stand
Not sure which type of space heater is right for you? Learn more by viewing our space heating selection guide
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- Water Heating
Water Heating
Residential
Tank TypeGas SeriesElectric SeriesCommercial
Tank TypeGas SeriesElectric SeriesHTP has several water heating options for your needs: tank type water heaters, tankless water heaters, our Crossover series water heaters, or supply boilers. HTP also has models for both your residential or commercial needs.
Not sure which type of water heater is right for you? Learn more by viewing our water heating selection guide
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- Indirect Water Heating
Indirect Water Heating
HTP's Indirect Water Heaters can be a part of your combination heating system whether you need indirect tanks or storage tanks for your residential or commercial needs.
Not sure which type of indirect water heating option is right for you? Learn more by viewing our indirect water heating selection guide.
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- Combination Appliances
Combination Appliances
Combination appliances save homeowners money on operating expenses, reduces overall installation costs, and takes up less space than traditional space heating and hot water appliances.
Floor and Wall Combis
- • Elite Ultra Wall and Floor New
- • Elite Fire Tube Ultra New
Phoenix Series
The UFT - Medium Mass Boiler
The UFT Boiler is a medium mass high efficiency boiler. This advanced modulating gas condensing boiler has a 316L stainless steel fire tube heat exchanger with a 96% AFUE rating. It also has ultra-low NOx emissions, making the UFT eco-friendly and your best option in today's green market. It is available in both a wall mounted version and a floor standing version.
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Ultra High Efficiency
The UFT Boiler has been rated one of the Most Efficient Boilers by ENERGY STAR for 3 years in a row! HTP's high efficiency residential boilers save energy, money, and protect the environment. While traditional boilers are not able to modulate, high efficiency boilers modulate which allows the boiler to run longer and at lower fire rates while maintaining the desired temperate in your home. This improves efficiency and saves energy.
The UFT puts everything you love about HTP’s focus on high efficiency in this versatile boiler. It is compliant with the NOx emissions limit set forth in SCAQMD Rule 1146.2. resulting in an eco-friendly boiler. The UFT is ETL listed and exceeds the latest minimum efficiency requirements of ASHRAE 103 with an AFUE rating of up to 96%.
If just 1 in 10 households used ENERGY STAR certified heating equipment, we would prevent annual greenhouse gas emissions of 12 billion pounds!
More Power Behind Every BTU
The UFT Boiler is available in six different models ranging from 80,000 to 199,000 BTUs in both wall and floor standing units. It is suitable for any residential application in both natural gas and liquid propane. It can be used in radiant flooring, with fan coils, base boards, snow melt, and domestic hot water (with indirect tank) or pool heating (with indirect tank). The UFT Boiler is also a wonderful option for new construction and retro fitting.
When ordering, replace * in model number with W for Wall or F for Floor units.
Model Btuh/Input Range AFUE Energy Guide UFT-80* 8,000-80,000 95.4% 
UFT-100* 10,000-100,000 95.1% UFT-120* 12,000-120,000 95.6% UFT-140* 14,000-140,000 95.0% UFT-175* 19,900-175,000 95.9% UFT-199* 19,900-199,000 96.0% 10 to 1 Turndown Ratio
The UFT Boiler's Combustion System is equipped with a specialized mixer on the inlet of the blower to increase boiler turndown to a 10 to 1. Modulating technology matches fuel consumption to demand to provide high system efficiency even during low load conditions. Greater turndown allows the UFT Boiler to modulate at lower firing rates which reduces short cycling, conserves energy and improves component reliability.
Answers at Your Fingertips
The Digital Control System with back lit design assists in detecting faults and maintenance intervals and also highlights the master boiler in cascade operation with multiple boilers. If digital control system senses a problem the display will show a fault code and narrative to aid in troubleshooting. It can also be used to view and adjust temperatures.
A better experience with every installation
The UFT Boiler features top and bottom supply and return connections on every unit. This allows for greater installation options. No primary/secondary piping is needed. The boiler vents in inexpensive, easy to install PVC, CPVC or Polypropylene piping. It also an overall vent length of 100' in 3" pipe or 50' in 2" pipe.
We recommend referencing local codes for additional requirements.
The UFT Advantage
An extremely durable laser welded 316L stainless steel heat exchanger features high temperature aluminum fins that are inserted into the individual fire tube circuits to increase heat transfer capabilities and resists corrosion. Its unique downward fire tube design provides optimal condensation drainage and produces self-cleaning for low maintenance.
The compact storage size of the unit allows for low pressure drop and higher efficiency. It's equipped with an outdoor sensor that adjusts the UFT's set point to match seasonal conditions which improves the overall operating efficiency.
The HTP Guarantee
The UFT Boiler is backed by a limited 10 year residential warranty out of the box! No registration is required.
On the Go? Take HTP with You!
Download HTP’s FREE Mobile App. Perfect for when you need guidance on the job. You’ll be able to access installation manuals, parts and installation drawings, brochures, troubleshooting videos and more.
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