Dehumidifier Installation
in Ocean Park, BC

Ocean Park is a semi-rural residential community in South Surrey near the Strait of Georgia, with a character that feels distinct from the rest of Surrey. Many homes here are set on larger lots with mature landscaping, and the neighbourhood has a higher proportion of older, individually designed homes rather than the tract subdivisions common elsewhere. The coastal proximity brings elevated ambient humidity year-round, and the sandy soils near the shoreline provide reasonable drainage, but homes further from the water and on heavier soils deal with the same moisture challenges as other South Surrey areas.

Humidity management is the operational heart of any crawlspace encapsulation system. Sealing the crawlspace envelope stops the major sources of moisture entry, but the residual humidity in the sealed space — from the soil itself, from diffusion through concrete stem walls, and from any minor air leakage — needs somewhere to go. In most Lower Mainland crawlspaces, a properly sized commercial dehumidifier running continuously is the right answer. The target is to maintain relative humidity at or below 50 to 55 percent year-round, which is the threshold at which mold growth and wood-boring insect activity become effectively impossible.

Proper sizing is critical. An undersized dehumidifier will run continuously without reaching the setpoint humidity level, eventually burning out its compressor. An oversized unit is not a problem in terms of dehumidification, but it costs more upfront and uses more energy than necessary. We calculate required capacity based on crawlspace square footage, current moisture load (as measured during inspection), the vapor barrier coverage and sealing quality, and the seasonal humidity patterns typical for the specific location.