4-Head DIRECT AIR DA25 Heat Pump (-25°C) | Ext: 36000 BTU
The Direct Air DA25 36 000 multi-zone heat pump heats and cools 4 rooms with a single outdoor unit. it delivers 26,800 BTU/h at −8 °C, heats down to −25 °C and qualifies for a $1,340 LogisVert grant. Installed by AirGreen in Montréal, Laval, Longueuil, the North Shore and the South Shore.
4 rooms, one outdoor unit.
Compared with the 141 multi-zone systems of 36,000 BTU we sell. Every number on this page carries its source.
The parts that make a multi-zone system.
Tap a part to learn more.
Outdoor unit
One compressor for the whole house. It supplies up to 4 heads and modulates from 10,000 to 29,600 BTU/h depending on what the rooms call for (NEEP).
Base pan heater
A heater keeps the outdoor unit’s base pan free of ice below 1 °C and during defrost (NEEP).
Refrigerant lines
One pair of lines per head.
Indoor heads
One head per room, each with its own remote and temperature. The combination is chosen in the “Zones” menu.
Control
Each zone is set separately.
Turn rooms on and off. Watch the power being shared.
One outdoor unit supplies every head: when several rooms call at once, they share its capacity. Pick an outdoor temperature.
Tell us your rooms. We tell you if this size is enough.
Pick the number of rooms and their size. The estimate targets a −15 °C day; it is a guide, the real calculation is done room by room at your home.
The whole series at a glance: find the box that fits you.
Each box is a product: the outdoor unit’s size, and the number of heads.
At −15 °C, it still delivers 70 % of its rated capacity.
Tap a temperature: certified capacity, efficiency and the cost of one hour of heating.
It slows down, it speeds up: the certified modulation range
Light bar: from minimum to maximum capacity. Dark mark: the rated value.
At every temperature, cheaper than baseboards.
Cost of one hour at full output, for the same heat delivered. Hydro-Québec Rate D, second tier: 11.142 ¢/kWh.
The official ratings, on the same scales as before.
SEER2, HSPF2 and EER2 come from the AHRI certification. The mark shows the median of the same-size multi-zone systems we sell.
A grant you can calculate, not guess.
The capacity at −8 °C comes from Hydro-Québec’s list of October 1, 2026. $50 per 1,000 BTU/h is the rate for ENERGY STAR heat pumps (guide v1.10).
Where it ranks among same-size multi-zone systems.
Compared with the 141 multi-zone systems of 36,000 BTU we sell, using the LogisVert list figures. Weaknesses too, said plainly.
Against three other brands in its class.
Same rated size, other manufacturers. Pick the opponent.
One multi-zone or several wall units? Both sides, honestly.
We compare both options on your floor plan during the estimate.
What to know before installing a multi-zone system.
Dimensions, wiring and lines, drawn. Then our six steps.
The outdoor unit, dimensioned
One circuit for the whole house
Published sound levels, on one scale.
We use the outdoor figure to choose where the unit goes.
What is particular about this machine.
Only facts published by ENERGY STAR, NEEP or the manufacturer.
Every number, and where it comes from.
Each line carries its source; a line with no published value is not shown.
The manufacturer’s documentation, as PDF.
Everything we have written about this system.
An intelligent multi-zone solution for precise comfort in every room
At AirGreen, we regularly install multi-zone systems in homes, condos, and multi-dwelling units in Montreal, Laval, Longueuil, on the North Shore, and the South Shore. The DIRECT AIR DA25 (36000 BTU) 4-head heat pump represents a particularly effective solution for those who want to independently control several spaces while optimizing their energy consumption.
This model stands out for its ability to power up to 4 distinct zones, with reliable performance down to -25°C, which perfectly matches Quebec's climatic realities.
Why choose a multi-zone heat pump like the DIRECT AIR DA25?
Personalized comfort management
With a quad-zone system, each room equipped with an indoor unit can be controlled individually:
- Different temperature in each zone
- Reduced energy losses
- Perfect adaptation to living habits
In a recent project in Boucherville (South Shore), we installed this system in a multi-story house where:
- The basement required little heating
- The ground floor required stable comfort
- The upstairs bedrooms had varying needs
Result: a measured reduction in energy consumption of more than 25% compared to an old, poorly balanced central system.
Performance adapted to the Quebec climate
Efficient heating down to -25°C
The DA25 series is designed to operate in extreme conditions:
- Heating operational down to -25°C
- Heating capacity at -15°C: 25,200 BTU
- Power at -8°C: 26,800 BTU
According to the technical brochure, these systems offer an impressive operating range:
- Air conditioning: -25°C to 50°C
- Heating: -25°C to 30°C
Energy efficiency data
- SEER2: 23.9 (high-efficiency cooling)
- HSPF2: 19.5 (efficient heating)
- COP at -8°C: 11.83
These performances ensure excellent energy efficiency, even in winter.
Complete technical configuration
Outdoor unit (DIRM-36DA25-4Z)
- Capacity: 36,000 BTU
- Voltage: 220V
- Sound level: 63 dB(A)
- Dimensions: 37.24 × 16.14 × 31.89 in
- Refrigerant: R-410A
- Recommended breaker: 40A
Indoor unit compatibility
This system is compatible with several types of units:
- Wall-mounted (DIRM-09 / 12 / 18 / 24 DA25-WM)
- Consoles
- 4-way ceiling cassettes
- Ducted units
- Floor/ceiling
This flexibility is a major advantage for complex projects, especially in renovations in Montreal where space is limited.
Advanced technology and features
Smart comfort and automation
Indoor units include several useful features:
- Automatic restart
- Intelligent defrost
- 24-hour programmable timer
- Eco mode and turbo mode
- Integrated humidity sensor
- "Follow Me" function for precise adjustment
Optimized airflow control
- Vertical vanes: automatic
- Horizontal vanes: automatic
- Vane position memory
This allows for uniform air distribution, essential to avoid cold or hot spots.
AirGreen actual installation: case study
Laval Project – Intergenerational home
We recently installed a DIRECT AIR DA25 4-zone heat pump in an intergenerational property:
Configuration:
- 1 x 18,000 BTU unit in the main living room
- 2 x 9,000 BTU units for the bedrooms
- 1 x 12,000 BTU unit in the basement
Challenges encountered:
- Significant piping length
- Balanced load distribution
According to the manufacturer's combination rules:
- Total indoor capacity must be between 66% and 133% of the outdoor unit
We adjusted the configuration to optimize real performance.
Result:
- Stable comfort in all zones
- Minimal noise (22.5 dB in some rooms)
- Satisfied client after a full winter
Subsidy and profitability
LogisVert Program
This heat pump is eligible for a provincial subsidy:
- Amount: $1340
Even if this model is not classified as "Cold Climate Energy Star," it remains highly efficient and cost-effective in a residential context.
Common mistakes to avoid
Incorrect sizing
A poorly calculated multi-zone system can lead to:
- Loss of heating performance
- Imbalance between rooms
- Premature wear
At AirGreen, we always analyze:
- Actual surface area
- Insulation
- Orientation
- Occupancy habits
Non-optimized installation
Errors observed on some external projects:
- Poorly insulated piping
- Poor drainage
- Inadequate unit placement
These errors can drastically reduce performance.
Maintenance and durability
Recommended maintenance
To ensure longevity:
- Filter cleaning: every 2 to 3 months
- Annual comprehensive inspection
- Refrigerant level check
Lifespan and warranty
- Warranty: 5 years compressor / 5 years parts / 0 year labor
- Extended warranty options available
Why choose AirGreen for your HVAC installation?
Recognized field expertise
- Certified and experienced technicians
- Installation compliant with RBQ standards
- Real performance optimization
Transparency and support
- Clear quote before work
- No hidden fees
- Post-installation support
Local presence
We intervene quickly in:
- Montreal
- Laval
- Longueuil
- North Shore
- South Shore
Conclusion: a strategic choice for multi-zone properties
The DIRECT AIR DA25 (36000 BTU) 4-head heat pump stands out as an effective solution for:
- Homes with several distinct zones
- Duplexes and multi-dwelling units
- Complex renovations
It combines flexibility, performance, and precise comfort control, while remaining financially accessible.
Contact AirGreen for a personalized evaluation
To obtain a detailed quote, tailored recommendation, or to schedule your HVAC installation in Montreal, Laval, Longueuil, North Shore, or South Shore, contact our team now.
We analyze each project with precision to offer you the most effective and sustainable solution.
What people ask us about multi-zone systems.
Can I heat one room and cool another at the same time?
No. On a multi-zone system like this one, every head works in the same mode, heating or cooling. Each room still keeps its own set temperature.
What happens when every room calls for heat?
They share the outdoor unit’s capacity: 26,800 BTU/h at −8 °C, 25,200 at −15 °C.
How many heads can I connect?
Up to 4 on this outdoor unit. This product is configured for 4 heads.
How much is the LogisVert grant?
$1,340 according to Hydro-Québec’s list of October 1, 2026. The grant never exceeds 100 % of the cost before taxes; apply within 9 months of installation.
Is it ENERGY STAR certified?
Yes, ID 2473856. It also meets the ENERGY STAR Most Efficient criteria, according to the ENERGY STAR database.
Down to what temperature does it heat?
Down to −25 °C.
Is it noisy?
Indoors, the reference head goes down to 22.5 dB(A). Outdoors, 63 dB(A): we place the unit away from bedroom windows.
Why a multi-zone instead of several wall units?
One outdoor unit on the wall and one circuit. In return, the rooms share the capacity, and if the outdoor unit stops, every zone stops.
What does the warranty cover?
Our sheet lists 5 years on the compressor and 5 years on parts; labour is not included by the manufacturer. AirGreen extended warranty: possible.
A multi-zone system is planned room by room. At your home.
We measure every room, draw the line route and choose the right head for each zone. The on-site estimate is free and the quote arrives within 24 h.