BOSCH BMAC4248DNTF Evaporator Coil

The 24½ in Bosch coil for wide cabinets

A wide electric furnace or air handler calls for a coil of the same width. The Bosch BMAC4248DNTF meets that need: a cased evaporator coil 24½ in wide and 30 in high, multi-position, compatible with both air conditioning and heat pumps according to Bosch. AirGreen installs it in Montreal, Laval, Longueuil, on the South Shore and on the North Shore.

Who this model is for

The BMAC4248DNTF is worth considering when the existing cabinet is 24½ in wide. When the coil has the same width as the cabinet, it connects directly, with no transition piece narrowing the air path. It suits owners of a Bosch system replacing a coil of the same model, and those adding air conditioning or a heat pump to an electric furnace of that width.

Bosch designed it for its BOVA 2.0 heat pump. In its matching tables, it appears with two outdoor units, the BOVA-36HDN1-M20G and the BOVA-60HDN1-M20G. Bosch does not publish a nominal tonnage for this exact coil: the actual capacity depends on the outdoor unit selected, and we choose it based on what the house needs.

Horizontal, on either side

In many South Shore homes, the basement is finished and the heating equipment ends up lying in a ceiling or tucked into a mechanical room under the stairs. The side the air comes from then depends on the layout of the rooms, not on a choice. The BMAC4248DNTF has an advantage here: Bosch publishes the same maximum airflow, 1,800 CFM, in horizontal left as in horizontal right, as well as in upflow. Only downflow is published lower, at 1,700 CFM. The connection side can therefore follow the layout of the space.

Bosch provides a multi-position drain pan that meets most installations, and an all-aluminum coil designed to resist corrosion.

How we install it

The project starts with a free on-site estimate. We measure the cabinet and the space, note the airflow direction and check the refrigerant lines: this coil needs a 3/8 in liquid line and a 7/8 in vapor line. We then confirm the match with the outdoor unit and the availability of the coil, since Bosch has discontinued this model. You receive a written quote before the work begins.

Once the coil is set in the chosen position, we secure and seal the cabinet on the air handler, then reseal the duct connections. The condensate drain is connected to the pan, the lines are brazed and the circuit is evacuated before charging. Last step: commissioning, during which we check the TXV, a component Bosch requires at the indoor coil to match its outdoor units.

Good to know: sold alone, a coil has no efficiency rating of its own and does not qualify for the LogisVert grant.

Your project, our quote

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. Ask for your free on-site estimate; financing is available for your coil and its installation.