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EFT Combi Wall

The EFT Combi Wall is an advanced modulating condensing gas boiler. It has up to a 95.1% AFUE rating to provide you space heating and endless hot water while saving energy. Its revolutionary design features a stainless steel fire tube heat exchanger for excellent heat transfer capabilities. It is ENERGY STAR certified with low NOx emissions and lead free, making it eco-friendly!

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Most Efficient Boiler of 2016

The EFT Combi was selected as one of this year's most efficient boilers by ENERGY STAR! What does that mean? By choosing an ENERGY STAR certified heating equipment and taking steps to optimize its performance, you can enhance the comfort of your home while saving energy. Saving energy helps you save money on utility bills and protects the climate by reducing greenhouse gas emissions.

ENERGY STAR certified boilers have annual fuel utilization efficiency (AFUE) ratings of 90% or greater for gas boilers. AFUE is the measure of heating equipment efficiency. ENERGY STAR certified boilers can be up to 12% more efficient than models that simply meet the federal minimum standard for energy efficiency. The highly efficient EFT Combi surpasses many boilers with a 95% efficiency rating.

Most Efficient Boiler of 2016

What is a combination boiler?

A combination boiler is one appliance that provides both space heating and domestic hot water. A separate hot water heater is not needed when using a combi boiler, offering space and energy savings. The combi will use an air handler to circulate hot water from the appliance through the heat exchanger. A blower moves the heated air through a standard duct within the appliance. This compact appliance allows you to achieve all of your heating needs in one small unit.

Incredible Turndown Ratio

The Combi Wall’s pre-mixed metal fiber combustion system has up to a 10 to 1 turndown ratio and an AFUE of up to 95.1%. It is available in two model sizes – EFTC-140W and EFTC-199W.

The modulating technology of the EFT Combi Wall matches fuel consumption demand to provide high system efficiency during low load conditions. The 199k BTU unit has a 10 to 1 turndown ratio while the 140k unit operates at a 5 to 1 turndown ratio. The greater turndown allows the EFT Combi Floor to modulate at lower firing rates which reduces short cycling, conserves energy and improves component reliability.

Model DHW Input CH Input AFUE Energy Guides
EFTC-140W 28,000-140,000 28,000-140,000 95.0% Energy Guide
EFTC-199W 19,000-199,000 19,000-140,000 95.1% Energy Guide

Quality Construction

EFT Combi Wall heat exchangers


The EFT Combi is manufactured with the highest quality materials. It uses durable 316L stainless steel for the heat exchangers, burners and domestic hot water tank construction. The Combi uses a combination of sophisticated sensors and safety devices to ensure your appliance is always functioning at peak performance.

It is also equipped with a stainless steel indirect storage tank which eliminates temperature fluctuation. Advanced controls maintain constant temperature and quickly adjust to user demand.

The high quality stainless steel coil indirect fired water heater produces endless hot water and maintains a stable temperature to satisfy your heating needs!

Added Savings!

The EFT Combination unit provides homeowners with one appliance that saves money on operating expenses, reduces overall installation costs and takes up less space than traditional space heating and water heating appliances. It also reduces greenhouse gas emissions by utilizing a mesh burner that reduces nitrogen oxide and carbon monoxide production and meets all nationally recognized low NOx emission standards.

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EFTC Wall Inside

Advanced Assurance

The EFT Combi Wall is backed by a limited 10 year residential warranty and five year commercial warranty.

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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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