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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
Commercial
- • Elite XL
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
Phoenix Series
Safety and Recalls
1. ELU Recall (March 2025)
We are issuing a recall for ELU-150WBN 3260035C8 [242830000265 through 242850000101] and ELU-199WBN 3260036C8 [243240000051 through 250150000083] models due to a potential safety hazard. It has come to our attention that some burner door studs may become loose during operation, posing a risk of injury or damage.
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2. ELX Flue Grommet Recall (July 2023)
Ariston Thermo USA LLC parent company of HTP have discovered a potential issue with the secureness of a grommet seal inside selected HTP boilers. While the likelihood of failure of this component is extremely small, the safe and efficient operation of our HTP boilers is our highest priority.
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