THERMO 2000 BTH Ultra 29 Electric Boiler | 29 kW - 240V

29 kW in six steps for homes that need a lot of heat

A residential boiler for large hot-water loops

The BTH ULTRA 29 is the 29 kW residential version of Thermo 2000’s wall-mounted boiler. It runs on 240 V single phase and delivers 98,948 BTU/h according to the manufacturer. What sets it apart is its elements: four of 5 kW and two of 4.5 kW, split into six stages.

It suits large homes heated by hot-water radiators or baseboards, radiant floors across a whole house or an addition, and the replacement of a high-output electric boiler. Think of a house in Laval with a radiant floor in the basement and radiators upstairs: that is the kind of loop for which a model of this size is considered.

Power and water: what to plan for in a Quebec home

A 29 kW boiler weighs heavily on the electrical service. Thermo 2000 lists a 2 x 80 A or a 175 A breaker at 240 V; conductor size is then set according to the electrical code. In some buildings supplied at 208 V, output drops: the manufacturer says to multiply the kW by 0.75 and the amps by 0.867. We run these checks before recommending the unit.

On the hydronic side, the boiler holds 3 US gal of water, connects with 1 1/4 in female NPT fittings and works up to 30 psi (207 kPa), over a range of 50 °F to 190 °F (10 °C to 90 °C). Wall-mounted and compact, it weighs 75 lb.

Six stages and an outdoor sensor

The T2 UltraSmart controller turns stages on as demand calls for them instead of starting full output at once. With the supplied outdoor sensor, it adjusts the water temperature to the weather, along three curves (MIN, STD and MAX), and stops heating in mild weather. It also offers presets by distribution system, a Boost mode and a pump purge. Finally, Thermo 2000 presents the BTH ULTRA as backup for a heat pump.

Installation by AirGreen

The on-site estimate is free: we look at the panel, the loop, the emitters and, where applicable, the old boiler’s nameplate. You then receive a written quote that specifies the boiler and the parts to plan for, including the circulator and the expansion tank, which are not on the list of supplied items.

Our technicians mount the boiler, install the 30 psi relief valve, drain valve and temperature and pressure gauge, connect the piping and the electrical circuit, fill and purge the loop, then set up the controller with you. Thermo 2000 covers the tank for 15 years and the electrical and mechanical components for 2 years (parts). AirGreen is a family business established in Montreal for more than fifteen years, holding RBQ licence 5645-9605-01 (ventilation, refrigeration and electrical).

Start with a free estimate

In Montreal, Laval, Longueuil, on the North Shore and on the South Shore, we come out at no charge and give you a written quote. Financing is available.