What's Normal for a Fujitsu Heat Pump
Fujitsu's Halcyon ductless systems are a common sight in Greater Vancouver homes, and like any heat pump they generate water as they run. In cooling mode the indoor coil pulls humidity from the air; in winter the outdoor unit melts frost during defrost cycles. Seeing water drip or pool beneath the outdoor unit is normal and nothing to worry about.
The problem to watch for is water leaking from the indoor head unit — drips running down the wall, a wet patch on the floor, or moisture along the bottom edge of the unit. Fujitsu wall units capture all condensate in an internal pan and send it outside through a drain hose. When water escapes indoors, the drainage path has failed somewhere.
If you can describe exactly where the water shows up and when it started, a technician can often narrow the cause before even arriving.
Clogged Drain Lines: The Usual Suspect
The most frequent cause of a leaking Fujitsu head is a clogged condensate drain. The drain hose runs from the indoor unit to the outdoors by gravity, and over time it fills with dust, algae, and biofilm. Once it blocks, condensate backs up into the pan and spills out a bottom corner — usually starting on the hottest, most humid days and worsening from there.
The outdoor end of the line is also a weak point. In Vancouver, drain outlets get blocked by leaves, garden debris, insect nests, or a plug of winter ice. If the exit is sealed, the whole line backs up.
Installation slope is the third drainage factor. The hose must run continuously downhill; a line that was installed flat, or that has sagged into a low spot, will trap water and overflow even when it's perfectly clean. Clearing the line and confirming proper fall is standard work for a technician.
Frozen Coils, Filters, and Other Causes
A frozen indoor coil is the next most common reason a Fujitsu leaks. Low refrigerant or restricted airflow lets the coil drop below freezing; ice forms, then melts faster than the pan can drain, and water overflows. Low refrigerant usually shows up as weak cooling and a unit that never seems to cycle off. That's a sealed-system issue for a licensed technician, since refrigerant handling is regulated in BC.
Dirty filters are the easiest cause to rule out. Fujitsu wall units have washable filters behind the front grille; when they clog, airflow drops and the coil freezes. Rinsing them monthly during cooling season prevents most freeze-related leaks.
Other causes include a cracked or shifted drain pan, a drain hose that's kinked or crushed behind furniture or under decking, and — on installs that can't drain by gravity — a failed condensate pump whose float switch has stuck.
Safe Checks and Getting Help
A few steps are safe to try yourself. Turn the unit off at the remote so it stops producing water. Open the front grille, slide out the filters, and rinse them in lukewarm water if they're dusty; let them dry completely before reinstalling. Walk outside and confirm the drain hose isn't kinked, crushed, or plugged with debris at the outlet.
Beyond that, hand it to a professional. Don't open the sealed refrigerant system, poke at the control board, or force chemicals down a clogged drain — those steps risk damaging the equipment or your safety. Refrigerant and electrical work require the right certification and tools.
Fujitsu heat pumps and mini-splits are serviced by our parent company, CanroHeat. If a filter clean doesn't stop the leak, call 604-359-1081 and we'll send a technician to find and fix the cause.
Typical BC Repair Costs
Repair cost depends on what's actually wrong, so think in ranges. Clearing a clogged drain hose and treating the pan is normally the least expensive visit. Re-pitching a poorly sloped line, replacing a cracked pan, or swapping a failed condensate pump falls in the mid range once parts and labour are added.
Refrigerant-related leaks are the hardest to quote without seeing the system, because the price hinges on finding the leak and recharging the circuit. We never estimate sealed-system work blind.
For a clear, accurate price on your Fujitsu, call CanroHeat at 604-359-1081. We'll diagnose the leak first, tell you what's causing it, and quote the repair before any work starts.