Radon mitigation fans are specially designed for continuous operation, typically running 24 hours a day, 7 days a week. They come in various sizes and capacities to match the specific air volume and resistance conditions beneath your slab. A-1 Radon selects the appropriate fan for each installation based on diagnostic testing results. Using the correctly sized fan is critical — too weak and radon isn't adequately removed; too powerful and it can create pressure imbalances that draw other soil gases into the home.

Radon-resistant new construction refers to a set of building practices incorporated during the construction of a new home to reduce radon entry. These measures typically include a gas-permeable layer beneath the slab, a plastic sheet vapor barrier, a sealed sump pit, and a passive vertical pipe running from below the slab to the roof. While RRNC features can reduce radon levels, they don't guarantee safe levels — testing is still required after construction. If levels are elevated, the passive system can be easily converted to an active system by adding a fan.

A properly designed radon mitigation system should not create significant negative pressure in the living space. However, an oversized fan or improperly designed system can depressurize the home, potentially causing backdrafting of combustion appliances like furnaces and water heaters. A-1 Radon's certified specialists conduct diagnostic testing and carefully size each system to avoid this issue. Post-installation inspection ensures your home's combustion appliances continue to operate safely.

A well-installed radon mitigation system has minimal impact on your home's heating and cooling efficiency. The system draws air from beneath the slab — not from your conditioned living space — so it doesn't significantly depressurize or change the temperature of your indoor air. However, if the system is improperly installed or oversized, it could draw conditioned air from the living space, slightly increasing energy costs. A-1 Radon designs every system to minimize energy impact while maximizing radon reduction.

Passive radon mitigation systems rely on natural pressure differentials and airflow to draw radon from beneath the foundation through a pipe, without a mechanical fan. Active systems add a fan to create a consistent, reliable negative pressure beneath the slab. Passive systems are less effective and less reliable than active systems, and the EPA recommends active fan-driven systems for homes with elevated radon. A-1 Radon installs only active, fan-driven systems to ensure the highest level of radon reduction for Wisconsin homeowners.