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Your AC produces condensate water during cooling — typically a few cups to a few gallons per day. When that water shows up on your floor or ceiling, here is what is happening and how to fix it.
Free in-home consultation. Free written quote. TSBC-licensed installers. Call (604) 359-1081 or request a quote online.
Algae and dust build up in the drain line, water backs up into the pan, overflows. Fix: shop-vac the outlet to clear the clog, pour 1 cup vinegar into drain access.
Iced coil thaws and overwhelms the drain pan. Cause: dirty filter, low refrigerant, blocked supply registers. Run fan-only 2-3 hours to thaw.
Older units develop pan cracks. Repair rare — replace pan ($150-$300) or unit if 12+ years old.
Free in-home consultation. TSBC-licensed technicians. FortisBC rebate paperwork handled.
📞 (604) 359-1081 Request a quoteVibration or DIY work loosens a coupling. Visual inspection usually finds it.
Drain line must slope 1/8" per foot continuously. CANRO checks at install and during service.
If indoor unit sits below drain outlet, a small pump moves water up. Failed = overflow. $200-$350 replacement.
Free in-home consultation. TSBC-licensed technicians. FortisBC rebate paperwork handled.
📞 (604) 359-1081 Request a quoteCANRO Heating & Cooling — TSBC Class-A gas-fitting licence · Red Seal HVAC certified · WorkSafeBC and liability insured · 4.9★ from 85+ Google reviews · Serving Metro Vancouver since 1999.
CANRO Heating & Cooling — TSBC Class-A gas-fitting licence · Red Seal HVAC certified · WorkSafeBC and liability insured · 4.9★ from 85+ Google reviews · Serving Metro Vancouver since 1999.
Below is a CANRO technician's perspective on central A/Cs as they apply in Metro Vancouver: what to look for, what to avoid, and what to expect. Modern central A/C systems in Metro Vancouver run at 15-22 SEER2, with variable-speed inverter compressors that match output to load — eliminating the on/off cycling of older single-stage units.
Heat-pump rebates from BC Hydro, FortisBC and the federal Greener Homes program stack to as much as $11,000+ for eligible Metro Vancouver households, dramatically changing the install-cost math vs. a conventional system. CANRO has worked with central A/C systems across Metro Vancouver since 1999, including installations and service calls in Steveston, Capilano, Port Moody and Lynn Valley.
Sizing. A/C sizing in Vancouver is typically 1 ton per 600-1,000 square feet depending on insulation, windows, and orientation. Over-sized A/C is the most common error — it leads to short-cycling, poor dehumidification, and premature compressor failure.
Lifespan. A properly maintained central A/C unit lasts 12-15 years. Vancouver's coastal salt air shortens outdoor-coil life — annual coil cleaning is more important here than inland.
Warning signs. A/C issues include warm air from supply registers, water leaks from the indoor coil (clogged condensate drain), refrigerant odour (R-410A leak), and noisy compressor startup.
R-410A is being phased down (not phased out) under EPA AIM rules. Existing R-410A systems can continue to be serviced — refrigerant remains available for the foreseeable future, though prices may rise. New systems installed 2025+ increasingly use R-32 or R-454B with lower global-warming potential.
Indoor water leaks from central A/C indicate a clogged condensate drain (most common), a failed condensate pump on attic installs, a frozen evaporator coil thawing, or a damaged drain pan. All are repairable in a single service visit.
Vancouver summers have been getting hotter — the 2021 heat dome saw temperatures over 40°C. Most modern Vancouver homes now install a heat pump (heating + cooling in one) rather than a stand-alone A/C, taking advantage of rebates available for heat pumps but not stand-alone A/C.
A typical 2.5-3 ton central A/C added to an existing forced-air furnace costs $5,500-$9,500 installed. A heat-pump conversion (cooling + heating in one unit) is usually a smarter long-term investment given available rebates.
Annual servicing in spring keeps the outdoor coil clean, the refrigerant charge correct, and the indoor evaporator coil and condensate drain clear. Skipping service is the single biggest cause of premature compressor failure.
A/C sizing in Vancouver is typically 1 ton (12,000 BTU) per 600-1,000 sq ft depending on insulation, windows, and orientation. Over-sized A/C is the most common error — it short-cycles, dehumidifies poorly, and shortens compressor life.
To book central A/C service or get a free written quote for installation, call CANRO at (604) 359-1081 or email info@canroheat.ca. We service all of Metro Vancouver including Steveston, Capilano, Port Moody and Lynn Valley.
This guide was written by the CANRO Heating & Cooling team based on 25+ years of central A/C installation, repair and annual service work across Metro Vancouver. Last reviewed May 2026.
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