explore documents
Elite FT Boiler

Elite FT – Heating Boiler

The Elite FT® is a high efficiency heating boiler for residential and commercial applications. This versatile unit is wall hung and comes in two models, ranging from 285,000 to 399,000 BTUs. An exclusively designed stainless steel heat exchanger provides superior heat transfer. The Elite FT has up to a 95.1% AFUE rating with up to a 10 to 1 turndown ratio. Top and bottom connections provide greater installation options.

view brochure

Watch and Learn


Energy Star's Most Efficient Boiler


The Elite FT was rated one of the Most Efficient Boilers for the past 6 years (2015 – 2020) by ENERGY STAR. It is highly efficient, saving you energy and money. Not only does this unit have up to a 95.1% AFUE making select models ENERGY STAR certified, it is also eco-friendly. The Elite FT is compliant with the SCAQMD Rule 1146.2, making it an environmentally friendly heating choice.


learn more about choosing high efficiency products

Versatile Application Range


The EFT is available in five models ranging from 285,000 – 399,000 BTUs. It is a wall hung, space saving unit that can be used in residential or commercial applications. Top and bottom connections are featured allow for greater installation options. The EFT has an unbeatable combined vent length of 200 ft. in 3” PVC pipe.

See just how efficient our units are by clicking on the yellow Energy Guide images!

Model Btuh AFUE Shipping Weight Energy Guides / Energy Star
EFT-285 285,000 95.1% 203 lbs. Energy Guide
EFT-399 399,000 97.1* Thermal Efficiency 298 lbs. N/A


Quality that's Elite

The EFT is constructed with a durable stainless steel heat exchanger. Stainless steel resists corrosion and lasts longer than typical copper or aluminum heat exchangers. Stainless steel also allows for superior heat transfer properties, increased thermal mass and low pressure drop. Together, this eliminates short cycling of the unit, allowing for a better heating experience.

view our user manual

A Better Experience with Every Installation

The EFT’s heat exchanger is a down fire design, promoting self-cleaning of the combustion system, making this unit virtually maintenance free. It also contains a built in condensate collection system. The EFT can be cascaded with up to eight boilers!

Our advanced control system is user friendly, allowing homeowners and contractors the security of having an innovative system that monitors boiler performance.

The outdoor reset senses outside air temperature and readjusts the heating system water to satisfy the heat loss of the home, saving fuel and creating comfort.

This unit also has an indirect water heating integration option, allowing the user to control the water heating through the boiler system to give domestic hot water priority.

learn more in our installation manual
Elite FT Installation

Advanced Security

The Elite FT comes with a twelve year warranty to assure your complete satisfaction.

view warranty

Your Personal Assistant is a Download Away



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.

download the app

Get help buying

Have a question?
Chat Now


Read what others have to say
about our products?

Rebate center

Find available rebates
nearest you.

Warranty claim

Submit your claim,
its as easy as 1, 2, 3.

Stay Connected

App-Icon - HTP
Facebook - HTP YouTube - HTP Twitter - HTP Instagram - HTP LinkedIn - HTP

© Copyright Ariston Thermo USA LLC parent company of HTP | 272 Duchaine Boulevard | New Bedford, MA 02745 | 800-323-9651 Careers | Sitemap