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Fan Coil Unit — Ceiling Cassette (4-way)
Flush drop-ceiling heating and cooling with even four-way air distribution for open-plan rooms.
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I installed the Apollo wall fan coil in our living room and I couldn't be happier. It's incredibly quiet—you barely notice it's running—yet it heats the space up super fast. Plus, the clean white design looks great on the wall.
Whisper-Quiet Comfort
A sleek, modern design that blends perfectly into any room.
The APOLLO Ceiling Cassette Fan Coil Unit is designed for efficient hydronic heating and cooling without ductwork. Its compact ceiling-mounted design provides quiet comfort, clean integration, and 4-way air distribution for homes, offices, garages, and light commercial spaces.
Remote control and thermostat not included. Requires a compatible 120VAC FCU thermostat, purchased separately.
| Cooling | 17,000 BTU (2T) / 34,000 BTU (4T) |
|---|---|
| Heating | 24,500 BTU (2T) / 45,500 BTU (4T) |
| Coverage | 900–1,500 ft² (2T) / 1,500–2,300 ft² (4T) |
| Airflow | 250–515 CFM (2T) / 500–1,000 CFM (4T) |
| Noise | Approx. 43 dB (2T) / 45 dB (4T) |
| Power usage | Up to 72 W (2T) / 128 W (4T) |
| Water flow | 3.8 GPM (2T) / 7.0 GPM (4T) |
| Connections | ¾ in FPT, PEX adapter included |
| Thermostat control | 120 VAC |
| Pressure rating | 200 PSI |
Complete the system

APOLLO Heat Pump
Fan coils need hot or chilled water to run. Our Apollo air-to-water heat pumps supply that water — heating in winter, cooling in summer.
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APOLLO Wi-Fi Thermostat
A dedicated fan coil thermostat runs the unit on a schedule and only when there is real demand, reducing energy use and improving room-by-room comfort.
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Multi-zone install
The Y-connector lets two fan coil units share a single heat pump circuit, expanding whole-home coverage without adding a second outdoor unit.
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Hydro Station
Combines pump, controls, and electric backup into one compact wall station — less loose parts, faster install, cleaner mechanical room.
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Water Heater Tank
The combined buffer and indirect tank lets the heat pump supply household hot water with no separate water heater needed.
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Manifold Station
Distributes warm water evenly to each radiant floor loop. Fan coils and radiant can both run from a single outdoor unit.
View detailsAnswers
Estimated coverage guidance is 900–1,500 ft² for 2 Ton and 1,500–2,300 ft² for 4 Ton. Actual sizing depends on insulation, layout, ceiling height, climate, water temperature, and heat loss.
The 2 Ton model delivers 17,000 BTU cooling and 24,500 BTU heating at 250–515 CFM. The 4 Ton model delivers 34,000 BTU cooling and 45,500 BTU heating at 500–1,000 CFM.
No. It mounts flush and distributes air directly in four directions without supply or return ductwork.
A built-in condensate pump and water level switch lift condensate to a drain line, with dual drain outlets for flexible routing.
Use a compatible 120VAC FCU thermostat, sold separately. This differs from Apollo wall and floor FCUs, which use 24VAC thermostats.
The suspension foundation must support a reinforced structure over 200 kg (440 lb). Use a qualified technician and plan at least 39 in clearance on all sides, 98–137 in ceiling height, and level mounting.
It uses ¾ in FPT connections with a PEX adapter and offers selectable 2-pipe and 4-pipe variants rated to 200 PSI.
The 2 Ton model operates at approximately 43 dB and 72 W; the 4 Ton model at approximately 45 dB and 128 W.
A ceiling cassette mounts flush and discharges air four ways for open rooms. Wall FCUs are fastest to retrofit, floor FCUs sit low, and concealed FCUs hide above ceilings with short ducts.
It includes a washable filter, condensate pump, water level switch, and drain system. A 120VAC FCU thermostat, piping, fittings, and qualified structural installation are separate.
Verified Google reviews from MBTEK customers across our heating and hydronic product lines.
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Need an installer?We made it easy for you.
Listed installers are independent contractors, not MBTEK employees. They're skilled professionals familiar with our products and capable of efficient installation.
Any questions?Reach out to us.
Our team can help with product questions, sizing guidance, and next steps.