- Brand
- Dettson
- Efficiency
- Up to 96%; verify exact size
- Heating control
- Two-stage
- Purchase check
- Full model + written scope
Dettson Chinook two-stage ECM
The two-stage ECM Chinook is relevant when the required output is below common replacement sizes. Verify the precise two-stage model rather than applying the full Chinook family range indiscriminately.
Size, efficiency & equipment
| Brand | Dettson |
|---|---|
| Model family | Chinook two-stage ECM |
| Fuel / equipment class | Natural gas; approved propane conversion |
| Efficiency | Up to 96%; verify exact size |
| Burner stages / control | Two-stage |
| Blower | ECM variable-speed |
| Input capacity, BTU/h | 15,000–120,000 across Chinook family; not every platform |
| Rated output, BTU/h | Not verified — obtain the exact model specification |
| Cabinet dimensions | Not verified — obtain the exact model specification |
| Canadian availability | Current Canadian catalogue; some PSC variants explicitly Quebec-only. |
Family maxima and ranges are not the specification of every size. Obtain the complete model suffix, current output rating and dimensional drawing. Cabinet dimensions do not include all service clearances.
Manufacturer pictures & technical drawings
Exact cabinet drawing was not verified for this profile. Use the manufacturer sources below and request the selected model’s current dimensional sheet before ordering.
Small loads need a genuine size comparison
Chinook’s low-input offerings make it worth investigating after insulation, air-sealing or window work has reduced a house’s heating requirement. A conventional replacement habit is to keep the old input rating. A better process asks whether the measured load has changed and whether a smaller furnace can deliver the necessary air to all rooms. Ask for both high- and low-fire outputs of the offered two-stage model.
The broad Chinook family range covers more than one platform. The presence of a number in family literature does not prove it is offered with every motor or staging option. Obtain a model-specific submittal and Ontario availability confirmation.
Air distribution remains part of the decision
A small furnace does not automatically solve a large duct imbalance. Have the contractor identify required heating airflow and any cooling airflow requirement before choosing the cabinet. If existing ductwork was designed around a much larger unit, ask whether balancing, return changes or a different cooling arrangement is needed. The point is not to maximize airflow but to deliver the correct amount to the rooms that need it.
The installed quote should show the thermostat and staging arrangement. Ask how the system will respond to a modest temperature setback and how the commissioning technician will demonstrate both stages.
Support for a less common size
Discuss availability of the exact motor, control and gas-train parts with the supplying contractor. A specialist low-output choice should come with a service plan that is as clear as its sizing rationale. Do not accept an invented durability score as a substitute. Keep the heat-loss calculation, equipment selection and startup measurements together; that record allows a later reviewer to understand why this size was chosen instead of a more familiar larger furnace.
Cost, reliability & alternatives
No verified, scope-complete Canadian installed price is assigned to this brand. Compare the exact equipment, labour, site alterations, commissioning, tax and warranty terms. A large unexplained gap between comparable written proposals warrants clarification and an independent second opinion.
Not numerically ranked: no comparable Canadian model-level failure-rate dataset was verified in this research.
Read the Dettson brand assessment · Installed-price context · Compare this model
Sources & verification
Research snapshot: 11 October 2026. Confirm the current complete model, Canadian supply and warranty before purchase.