Dehumidifier Installation
in Hammond, BC

Hammond is one of the oldest settled communities in Maple Ridge, located near the Pitt River and the Fraser River confluence. The flat bottomland position means water management is a significant concern — the area was historically prone to flooding before modern dyke systems were established, and the water table remains high through the wet season. Older homes in Hammond have dealt with challenging moisture conditions for decades, and many have accumulated significant crawlspace damage as a result.

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.