THERMO 2000 BTH Ultra 20 Electric Boiler | 20 kW - 240V

A 20 kW electric boiler to heat the whole home with hot water

What the BTH ULTRA 20 is

Thermo 2000’s BTH ULTRA 20 is a 20 kW, 240 V wall-mounted electric boiler, or 68,240 BTU/h. Its four 5 kW elements work over four stages of equal output, controlled by the T2 UltraSmart controller. It weighs 63 lb and holds 2 US gallons of water: a compact unit that leaves room in the mechanical room.

This size is aimed at homes that rely entirely on hot water for heat. Think of new construction where radiant floors cover every level, or a renovated home that keeps its radiators and hot water baseboards. Thermo 2000 designs it for new installations and replacements alike, and as backup for a heat pump, geothermal or solar.

Well suited to radiant floors

A radiant floor performs best when the water temperature follows the weather. That is the job of the supplied outdoor sensor: the controller uses it to set the water on one of three curves (MIN, STD, MAX), and presets by distribution system save starting from scratch. Warm weather shutdown leaves the slab alone when the spring sun is enough, and Boost mode remains available.

The controller also provides a 24 V supply for the thermostat and accessories, as well as a pump purge function. The backlit display makes the settings easy to read.

An electrical load to plan early

In a construction or renovation project, the boiler circuit is planned from the start. At 240 V single phase, the BTH ULTRA 20 draws 83.3 A; Thermo 2000 lists a 110 A breaker and copper wire gauge 3 or aluminum gauge 2. At 208 V, output is multiplied by 0.75, a point to check in some buildings.

What AirGreen’s installation covers

We first meet you for a free on-site estimate, ideally before the walls are closed in new construction. You receive a written quote describing the boiler, its location and the planned electrical work. Our technicians then mount the boiler, connect it to the loop through its 1 in female NPT connections (two reducers supplied) and to the electrical circuit, fill and purge the system, then set the temperature curve and the thermostat.

AirGreen is a family business established in Montreal for more than fifteen years, holding RBQ licence 5645-9605-01 in ventilation, refrigeration and electrical work. Thermo 2000 covers the tank for 15 years and electrical and mechanical components for 2 years.

Get your project started

We work in Montreal, Laval, Longueuil, on the South Shore and on the North Shore.

Ask for your free estimate: you receive a written quote for your BTH ULTRA 20, and financing is available.