Multi Zone Heating & Cooling Systems
GREE MULTI+ ULTRA COMPRESSOR -35°C
Meet the Thermolux Gree Multi+ Ultra series — versatile, inverter-driven ductless mini-split heat pumps engineered for flexible multi-zone comfort across Greater Montreal, Laval, Longueuil, the South Shore and the North Shore. Spanning 18 000 to 42 000 BTU and supporting 2 to 5 zones per outdoor unit, these systems deliver dependable performance with low-ambient heating down to -35 °C.
Optimized for quiet operation and adaptable installations, Thermolux Multi+ Ultra outdoor units pair with a wide range of indoor heads to fine-tune capacity room by room, reduce energy waste and simplify everyday control for homes and light-commercial spaces.
- G10 inverter technology for precise temperature regulation and optimized power draw across multiple zones.
- Cold-climate comfort with robust low-ambient heating down to -35 °C for Quebec winters.
- Quiet performance thanks to variable-speed compression and intelligent defrost management.
- Reliability and control with built-in Wi-Fi, auto-diagnostics, low-voltage start and anti-corrosion coated fins.
- R410A refrigerant and multi-zone compatibility for 2, 3, 4 or 5 zones depending on the outdoor model.
10-Year Warranty: Compressor and parts are covered for ten years for lasting peace of mind.
SEER:
23
EER:
12
HSPF:
10
Sound Level:
62
Model:
MULTIU36HP230V1DO, MULTIU42HP230V1DO, MULTIU18HP230V1DO, MULTIU24HP230V1DO
AHRI:
204664395, 204631568, 204630893, 203989085, 204664396, 203989086, 204630894, 204288780, 204664397, 204288781, 204630895, 204664398
Minimum Operating Temperature:
-35
Series:
MULTI+-ULTRA-COMPRESSOR
Capacity:
18 000 BTU, 24 000 BTU, 36 000 BTU, 42 000 BTU
Refrigerant:
R-410A
Compressor Technology:
Inverter
Connectivity:
Wi-Fi
Technology Features:
G10 inverter, Intelligent defrost, Self-diagnosis, Low-voltage start
Rebate Programs:
LogisVert
Parts Warranty:
10
Labor Warranty:
10
Technology:
2-stage/3-cylinder variable-speed compressor, Corrosion-resistant acrylic resin coil coating, Reliable heating down to -35 °C, Built-in WiFi, High efficiency (SEER2/HSPF2)
Aesthetics:
Discreet wall-mounted design, Compact indoor units, Uniform white finish, Integrated LED display
Technical details:
High efficiency 23 SEER, Heating down to -35 °C, Cooling range: -18 °C to 46 °C, Built-in Wi-Fi, Two-stage / three-cylinder variable-speed compressor, Anti-corrosion acrylic resin coil coating, Outdoor sound pressure: 62 dB(A), 220V power supply, R-410A refrigerant, AHRI certified (204288780), 10-year parts warranty, 10-year compressor warranty, Optional 10-year labor warranty
Coverage guide:
9 000 BTU — 300 – 500 sq. ft., 12 000 BTU — 400 – 650 sq. ft., 30 000 BTU — 1 100 – 1 600 sq. ft.
