Central Heat Pump BOSCH IDS 2.0 | 3 Tons - 36,000 BTU (Air Handler BVA-036WN1-M20) - R410A
A variable-speed central heat pump that keeps a good share of its capacity in cold weather
For a large home that already has ductwork, the central heat pump handles the cooling and most of the heating, with a single thermostat. The Central Heat Pump BOSCH IDS 2.0 | 3 Tons - 36,000 BTU (Air Handler BVA-036WN1-M20) - R410A pairs the BOVC-036HDN1-M20G outdoor unit with the BVA-036WN1-M20 indoor unit, which pushes air through the existing duct system.
Its certified ratings are 19.0 SEER2, 12.0 EER2 and 9.5 HSPF2. Its compressor is variable-speed (inverter technology), and its certificate publishes heating capacities at -8 °C and -15 °C that keep a good share of its nominal size.
For large homes with ducts
The 3-ton size is aimed at large homes that already have ducts: a two-storey house with a finished basement, a detached house with many rooms, a large enlarged single-storey house. It handles the cooling of every room served and most of the heating, including when the cold sets in.
The size is confirmed with a room-by-room load calculation. A recent, well-insulated home may need less; an older, heavily glazed or leaky home may need more. We decide during the visit, before any quote.
The Bosch IDS 2.0 system: two paired units
The BOVC-036HDN1-M20G outdoor unit holds the variable-speed compressor, the outdoor coil and its fan. The BVA-036WN1-M20 indoor unit is an air handler: it houses the indoor coil and the blower that pushes air through the ducts, and it can receive backup electric heating elements. It takes the place of the old electric furnace, in the basement or a utility closet, and connects to the existing plenum and return air.
The two units are certified together and linked by an insulated copper refrigerant line; they run on R-410A. It is this exact pairing that carries the published ratings, and we install it as is.
Variable speed, explained
A conventional heat pump runs at full capacity or stops. A variable-speed compressor adjusts its speed to the home's actual demand: it slows down in mild weather, when little heat is needed, and speeds up as the cold intensifies. The system thus spends long periods running gently rather than constantly starting and stopping.
For the house, this means a more stable temperature, without the swings that follow each stop of a single-speed unit, and air that moves more continuously through the ducts, all the way to the rooms farthest from the cabinet.
What the certificate shows
The certificate lists 28,000 BTU/h at -8 °C (17 °F) and 24,000 BTU/h at -15 °C (5 °F), with a COP of 1.90 at -15 °C. The two points are measured separately; we report each one as published.
Compared with the nominal size of 36,000 BTU, the listed capacity represents about 78% at -8 °C and 67% at -15 °C. In other words, on a -15 °C night, this system still supplies about two thirds of its nominal capacity, and it delivers almost twice the energy it uses.
These figures come from certificate AHRI 214053805, as published in the AHRI certification directory.
Less backup heat when the cold sets in
Every air-source heat pump supplies less heat as the temperature drops, while the house asks for more. The more capacity it keeps in cold weather, the less work is left for the backup. That is what this system's certificate figures show: at -15 °C, the share left to the backup is smaller than with a heat pump that keeps only half of its capacity.
The backup is still needed for the coldest winter nights in Montreal and for defrost. The indoor unit's heating elements then take over the missing share, and switch off as soon as the heat pump is enough again. We size them from the load calculation and the capacity of the electrical panel.
What 19.0 SEER2, 12.0 EER2 and 9.5 HSPF2 mean
- SEER2 (19.0): seasonal cooling efficiency, over a whole summer. The higher it is, the less cooling weighs on the summer bill.
- EER2 (12.0): cooling efficiency at full demand, on a heat-wave day.
- HSPF2 (9.5): seasonal heating efficiency. For a home heated most of the year, this is the rating to look at first.
- COP (1.90 at -15 °C): the heat delivered per unit of electricity used at that temperature. An electric baseboard has a COP of 1.
Variable-speed cooling and dehumidification
In summer, variable speed also changes the way the house is cooled. Once the temperature is reached, the compressor slows down instead of stopping, and the coil stays cold longer. It thus removes humidity from the air continuously, and the house feels cooler at the same temperature. The water removed flows out through the condensate drain.
In a large two-level home, this continuous operation also helps cool air reach the upper floor, where heat builds up under the roof. We set the balancing dampers to send more air upstairs during the hot season.
LogisVert
This pairing does not carry an amount on Hydro-Québec's LogisVert list of October 19, 2026. If the grant matters for your project, we will point you to an eligible pairing of comparable size.
Installation by AirGreen
Ducts and electrical, checked before the quote
The indoor unit takes the place of the old furnace or air handler and connects to the existing duct system. Before the quote, we check duct sizes and the air return, because a variable-speed heat pump only delivers its full efficiency if the airflow keeps up. In a large home, we also look at the long branches, the sealing of the joints and whether there is a return upstairs.
On the electrical side, we check the panel's capacity for the outdoor unit's dedicated circuit and for the power supply to the indoor unit and its backup. Any correction needed appears in the written quote.
The job
- Removal of the old electric furnace and, where applicable, the old air conditioner, with recovery of the refrigerant.
- BVA indoor unit: connection to the plenum and return air, condensate drain to a floor drain or a pump.
- Outdoor unit: on a stand or a bracket, above the snow line, away from roof drips and dryer vents.
- Refrigerant line: insulated copper, brazing, pressure test and vacuum before the valves are opened.
- Electrical: dedicated circuit, outdoor disconnect, power to the backup and a compatible thermostat.
- Commissioning: refrigerant charge, airflow, defrost and settings, then an explanation of how everything works.
Maintenance
Check the system filter every month during the heating and cooling seasons, and replace it according to its format: a clogged filter reduces airflow. Keep the outdoor unit clear of snow and leaves, and do not cover it in winter, since it heats the house all season.
Plan annual HVAC maintenance of the coil, the condensate drain and the electrical connections. In winter, the white vapour rising from the outdoor unit during defrost is normal.
AirGreen, for the life of the installation
A family business active for more than fifteen years in Montreal, Laval, Longueuil, the North Shore and the South Shore, we hold RBQ licences for ventilation, refrigeration and electrical work and carry $5,000,000 in liability insurance. The in-home assessment is free, the quote is in writing, and our financing options let you choose the right unit rather than the cheapest one.
Request your free estimate for the Central Heat Pump BOSCH IDS 2.0 | 3 Tons - 36,000 BTU (Air Handler BVA-036WN1-M20) - R410A. We assess the home room by room and confirm the right size and your grant eligibility before signing.