BOSCH BMAC4248CNTF Evaporator Coil

A 21 x 30 in Bosch coil at the heart of a BOVA 2.0 central heat pump

The Bosch BMAC4248CNTF is a multi-position cased evaporator coil that Bosch presents as compatible with both air conditioning and heat pumps. It measures 21 in wide by 30 in high and connects with a 3/8 in liquid line and a 7/8 in vapor line. AirGreen installs it in homes in Montreal, Laval, Longueuil, on the South Shore and on the North Shore.

What the match changes for you

A coil never works alone. It receives refrigerant from an outdoor unit and air from an electric furnace or air handler. The whole set determines capacity and performance, which is why a coil sold alone has no efficiency rating. In its matching tables, Bosch lists the BMAC4248CNTF with two outdoor units of its BOVA 2.0 heat pump: the BOVA-36HDN1-M20G and the BOVA-60HDN1-M20G. Bosch does not publish a nominal tonnage for this exact coil; the outdoor unit is therefore chosen according to the heating and cooling needs of the house, which we assess on site.

With a heat pump, the coil works all year: it cools and dries the air in summer, then transfers to the air the heat collected outside in winter. Bosch requires a TXV at the indoor coil to match its outdoor units.

A 21 x 30 in size: where it fits

Picture an extended bungalow in Laval: its electric furnace already feeds a duct system, and its owners want to replace an old central air conditioner with a heat pump. The BMAC4248CNTF sits on the furnace, in upflow, where Bosch publishes a maximum airflow of 1,800 CFM. The same coil can also be installed horizontally or in downflow: Bosch lists 1,800 CFM in horizontal left, and 1,700 CFM in horizontal right as in downflow.

Two measurements guide the decision: the 21 in (533 mm) width, which must match the cabinet, and the 30 in (762 mm) height, which must fit under the ceiling. The all-aluminum coil and the multi-position drain pan complete the picture Bosch gives of this series.

What our installation includes

Before the work: free on-site estimate, choice of the outdoor unit, confirmation of the match and of the availability of the coil, which Bosch has discontinued.

During the work: setting the coil in the right position, sealing the cabinet to the air handler and the ducts, connecting the condensate drain, connecting and brazing the 3/8 in and 7/8 in lines.

At commissioning: vacuum, charge, TXV check and a test of the system in cooling and, with a heat pump, in heating.

Sold alone, this coil does not qualify for the LogisVert grant; if you are replacing the whole system, we price the complete set in the same quote.

Let’s talk

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. Book a free estimate: you receive a written quote, and financing lets you spread the payment.