THERMO 2000 ComboMax Ultra 70 Electric Boiler with Built-In Hot Water | 27 kW - 240V

27 kW to heat a large home and make its hot water, without a second appliance

A large home, a single mechanical room

Large homes heated with hot water often pile up appliances: a good-sized electric boiler, one or two water heaters, sometimes a buffer tank. Thermo 2000’s 27 kW ComboMax ULTRA 70 combines the boiler and the water heater in one appliance 70 1/2 in high and 24 in in diameter, built around a 71 US gal tank.

It suits spacious homes in Laval or on the North Shore with radiant floors on several levels, properties with several bathrooms, and small commercial spaces that need both hydronic heating and hot water. Thermo 2000 even provides a separate warranty for commercial use.

Six stages of output and hot water on demand

Six 4.5 kW elements, spread over six stages, heat the tank water and deliver 92,124 BTU/h at 240 V. The output therefore comes on in steps. That heating water supplies your radiant floor zones or radiators, and surrounds parallel copper coils that heat the domestic water as it passes through. Nothing is stored: according to the manufacturer, this reduces the risk of Legionella.

On flow, Thermo 2000 publishes 95 US gal in 10 minutes and 228 US gal in one hour, for water at 110 °F drawn from cold water at 40 °F, with boiler water at 180 °F. The T2 UltraSmart controller gives priority to hot water, runs the heating pump on thermostat demand and groups the settings on a backlit display.

First of all, the electrical service

At this output, the electrical side decides whether the project is feasible. Thermo 2000 specifies a 150 A breaker and Cu 1 or Al 00 wire at 240 V. Many homes in Montreal have a service that does not leave that margin once the range, the dryer and the other loads are counted. We do that calculation during the estimate, before recommending this size over a smaller one.

Our installation, from removal to commissioning

The on-site estimate is free. The written quote that follows specifies the chosen output, the electrical work, the circulator, the expansion tank and the zones to connect. On installation day, our technicians remove the old electric boiler and the water heater, install the ComboMax, connect the heating through the 1 1/4 in NPT connections and the domestic water through the 3/4 in connections, then wire the appliance. They fill and purge the system, set the controller and check the hot water with you.

AirGreen is a family business established in Montreal for more than fifteen years; it holds RBQ licence 5645-9605-01 in ventilation, refrigeration and electrical work. Thermo 2000 warrants the tank and coils for 15 years in residential use (10 years in commercial use) and the electrical and mechanical components for 2 years.

Get your quote

We work in Montreal, Laval, Longueuil, on the North Shore and on the South Shore. Ask for your free estimate: the quote is in writing, and financing is available for this project.