Reliability and performance in compact sizes.

bth ULTRA electric boilers are available in a wide variety of performance levels, from 7 kW to 36 kW, and with multiple voltage options. They can meet any-and all-of your hydronic heating needs.

Whether you need to heat a condominium, single-family home or commercial building, bth ULTRA is an ultra-silent solution for new installations or replacement of an existing system. Its compact size is ideal for small spaces. In addition, the piping can be connected in multiple ways, making the on-wall boiler installation very easy.

The bth ULTRA can be combined with an auxiliary heater for a dual-energy system. Thanks to its UltraSmart TM controller, the boiler provides optimal comfort with accurate temperature management.

Producing no combustion or GHG emissions, the bth ULTRA is a highly energy-efficient and green alternative. Maintenance is simple and kept to a minimum.

Features

• Accurate and easily configurable UltraSmart TM controller with backlight display
• Preset configurations based on heating distribution system
• Outdoor sensor that modulates boiler water temperature
• The UltraSmart TM controller enables users to view the boiler’s operation status at a glance
• Heating stops when outside temperature gets warmer
• “Boost” mode that automatically increases the temperature when needed
• Works only when triggered by the thermostat
• Ability to purge the pump when system is not running
• Adjustable between 50 °F and 190 °F
• Safety control to limit excessively high temperatures
• Electrical supply and heat pump contact (contact only with commercial boilers)
• Breakers with 33 & 36 kW residential models
• 24 V electrical supply for thermostat and other accessories
• 30 PSI safety relief valve
• Drain/purge valve