Blast Pro 38,000 BTU 3 Zone Mini Split Heat Pump, 20 SEER2, Wifi, 9K + 9K + 12K

Window units block the glass, leak air around the frame and have to come out before winter. Three of them means three machines rattling in three rooms, and none of them heat once the weather turns.

One outdoor unit serves all three zones here, with 9,000, 9,000 and 12,000 BTU indoor units mounted out of the way. It is a heat pump, so the same equipment heats down to -20°C (-4°F) rather than sitting in a garage for eight months.

What a three zone kit looks like out of the carton

One 38,000 BTU condenser, three indoor units of 9,000, 9,000 and 12,000 BTU, and a coil of insulated copper with wiring, tape and putty for each zone. The 12,000 BTU unit is the largest of the three, so point that one at the busiest room.

The numbers behind the winter claim

Two figures matter here: heating down to -20°C (-4°F) and cooling up to 53°C (127°F), both held up by an electric heater built into the outdoor chassis. Heat pump output drops as the outdoor air cools, so treat the low figure as the point it still runs, not the point it runs at full capacity.

Where the 20 SEER2 number comes from

Inverter compressors ramp up and down instead of slamming on and off, which is what holds a room steady and keeps the meter from spiking. The EnergyGuide panel on this outdoor unit shows 20 SEER2 for cooling and 9.5 HSPF2 for heating, and the refrigerant is R32.

Modes, fan speeds and the child lock

Seven operating modes and eight fan speeds cover the range from a mute overnight setting to turbo when a room needs pulling down fast. A 4D swing pattern spreads air across the room rather than straight at the sofa, and a child lock stops small hands changing the set point.

One 38,000 BTU outdoor unit runs all three indoor units. Each zone starts, stops and holds its own temperature, so an empty room costs nothing.

A common rule of thumb is 20 to 25 BTU per square foot (Carrier publishes 25). Here, a 9,000 BTU unit suits roughly 360 to 450 sq ft and a 12,000 BTU unit suits roughly 480 to 600 sq ft. Natural Resources Canada points to CSA F280-12 for a proper load calculation.

The compressor varies its speed instead of cycling on and off. Published ratings are 20 SEER2 for cooling and 9.5 HSPF2 for heating.

A chassis electrical heater keeps the outdoor base pan clear. The manufacturer rates heating down to -20°C (-4°F) and cooling up to 53°C (127°F).

Each zone gets a 16 ft insulated copper line set and 19 ft of communication wire, plus a 8 ft drain hose. That is the material most quotes list separately.

The outdoor unit runs on 208/230V 60Hz. It wants its own branch circuit, sized from the MCA and maximum breaker figures on the unit's own nameplate, with a disconnect within reach.

Wifi app, a remote with a digital display for each zone, Amazon Alexa and Google Home.

The indoor filters pull out, rinse under a tap and go back in. Clean filters are the cheapest way to keep airflow and running cost where they should be.

Ships from a Canadian warehouse. Free shipping on orders over $150. Some remote areas, PO boxes and surcharge regions may be excluded or charged extra.

Return within 14 days of purchase, unused, in original condition and packaging.

Covered directly by the manufacturer under their warranty terms for material and manufacturing defects.

The 12,000 BTU unit takes the busiest space, roughly 480 to 600 sq ft, while the 9,000 BTU units handle quieter rooms. Capacity goes where the heat load actually is.

Older houses, additions, attic conversions and finished basements rarely have ducts where they are needed. Three zones from one outdoor unit avoids opening up ceilings.

This is a heat pump, not a cooling-only air conditioner. It carries an HSPF2 heating rating of 9.5 and a chassis heater for winter operation.

What we stand behind

• Ships from a Canadian warehouse, with free shipping on orders over $150
• 14 day returns on unused items in original condition and packaging
• Covered by the manufacturer's own warranty for material and manufacturing defects
• Line sets, communication wire and a controller for every zone are in the box

How much space will each indoor unit cover?

Sizing runs off the heat load of the room, not just its floor area, and Natural Resources Canada points to CSA F280-12 for the real calculation. As a rough check, 20 to 25 BTU per square foot is the usual rule of thumb. Here, a 9,000 BTU unit suits roughly 360 to 450 sq ft and a 12,000 BTU unit suits roughly 480 to 600 sq ft. Poor insulation, big west-facing windows or a 9 ft ceiling all push that figure up.

The three indoor units add up to 30,000 BTU and the outdoor unit is rated 38,000 BTU. Why the gap?

Multi-zone outdoor units come in fixed sizes and the indoor combinations are built around them, so the totals rarely land exactly. The spare capacity is not wasted: the inverter compressor simply runs at a lower speed, which is where a modulating system gets its efficiency. Either way, do not add the indoor ratings together to judge the system. The 38,000 BTU figure is what can be delivered at one time, shared among the zones that are calling.

How cold can it get outside before it stops heating?

The manufacturer rates low ambient heating down to -20°C (-4°F), helped by an electric heater in the outdoor chassis. Natural Resources Canada notes that air source heat pumps lose capacity and efficiency as it gets colder, with typical COPs falling from 2.0 to 5.4 at 8°C to 1.1 to 3.7 at -8°C, and that most units have a minimum operating temperature between -15°C and -25°C. Keep a backup heat source for the coldest stretches.

Can I install this myself in Canada?

Plan on a licensed installer. In Ontario, for example, the province states that by law only a certified technician may remove, discharge, handle and dispose of refrigerants, including HFCs, and that mechanical work on refrigeration equipment needs a Certificate of Qualification on top of the refrigerant certificate. Other provinces have their own halocarbon rules. The federal Code of Practice says the same thing in plainer terms: the technician doing work that could release refrigerant must hold the proper environmental certification. The 208/230V 60Hz power supply also means an electrician and a dedicated circuit.