Description
The Grandaire FMA5L3600AL is a 3‑ton (36,000 BTU) indoor air handler in the FMA5L Series, designed for vertical (upflow) mounting and flush installation in tight spaces. It operates on low‑GWP R‑454B refrigerant and includes factory-installed leak dissipation systems. Its multi-speed PSC blower delivers efficient airflow, while the galvanized steel cabinet ensures durability. Ideal for residential, multi-family, and light-commercial buildings, this unit offers reliable year-round comfort.
Performance
Featuring a multi-speed PSC blower, the FMA5L3600AL delivers approximately 1,050–1,250 CFM, adapting to load demands and improving comfort control. The all-aluminum coil maximizes heat exchange while resisting corrosion. A thermostatic expansion valve (TXV) precisely regulates refrigerant, optimizing responsiveness and efficiency. Though single-stage in cooling, its variable blower ensures adaptable system performance across environmental conditions.
Smart Features
This air handler supports a wide range of smart thermostats and zoning systems, making it ideal for modern HVAC setups. While it lacks built-in connectivity, its blower motor and control terminals enable two-stage or communicating thermostat functionality. This flexibility supports zoned climate control for multi-family units or specialty commercial spaces, enhancing comfort, energy efficiency, and remote management capabilities.
Comfort & Noise
Engineered for quiet operation, the FMA5L3600AL features a fully insulated cabinet and vibration-dampening blower mounts. Its sloped, corrosion-resistant drain pan helps maintain indoor air quality and reduces microbial growth. Balanced airflow minimizes drafts and provides even temperature distribution. The compact design also fits unobtrusively in utility closets or wall hang configurations.
Use Case Fit
Suited for residential homes, apartments, condos, and light-commercial spaces, this unit delivers efficient, space-saving performance. It performs reliably in moderate climate regions and supports both new builds and retrofit projects. With R‑454B refrigerant compliance and flexible blower control, it offers future-ready performance aligned with environmental regulations.
Value & Reliability
Constructed with galvanized steel housing, high-density insulation, and a corrosion-resistant coil, the FMA5L3600AL is engineered for long-term durability. Built-in refrigerant safety features support compliance with UL standards. The unit’s straightforward design minimizes maintenance needs, delivering low total cost of ownership. Its robust construction and energy-saving operation make it a reliable choice for contractors, property managers, and homeowners alike.
Summary Wrap-Up
The Grandaire FMA5L3600AL air handler combines high capacity, environmental compliance, and quiet, efficient operation. Perfectly suited for direct consumers and wholesale professionals, it offers compact vertical mounting, flexible thermostat integration, and dependable airflow delivery. Whether outfitting a multi-family building or commercial space, this 3‑ton unit stands out as a future-proof, eco-friendly HVAC solution.
Key Features
- R‑454B Refrigerant: Uses low‑GWP, non‑ozone-depleting R‑454B to support modern environmental standards.
- 3‑Ton (36,000 BTU) Capacity: Delivers powerful and reliable heating and cooling for larger residential or light-commercial spaces.
- Multi-Speed PSC Blower (≈1,050–1,250 CFM): Adjusts airflow dynamically for efficient comfort under varying load conditions.
- All‑Aluminum Coil: Offers excellent heat transfer and strong corrosion resistance for extended service life.
- Thermostatic Expansion Valve (TXV): Provides precise refrigerant control to optimize system responsiveness and efficiency.
- Corrosion-Resistant Sloped Drain Pan: Helps prevent mold and bacteria buildup, promoting better indoor air quality.
- Insulated Galvanized Steel Cabinet: Minimizes noise and vibration for quiet, durable operation in challenging installation environments.
