Frequently Asked Questions

Level 3 Navien Certification represents the highest manufacturer-approved training for diagnostics, repairs, and installations. It ensures technicians follow factory standards to protect warranties and optimize system performance. At Cosmic Plumbing, this certification allows us to deliver expert service on all Navien tankless models across McHenry and surrounding areas.

If your system shows inconsistent hot water, frequent error codes, or failed components after years of service, replacement often makes more sense than ongoing repairs. Age, efficiency loss, and the cost of parts all factor into the decision. At Cosmic Plumbing, we provide honest recommendations based on long-term value and system condition.

Improper venting and insufficient gas line capacity are the most common installation errors that lead to poor performance and safety issues. These mistakes can void warranties and cause system failures. At Cosmic Plumbing, we ensure proper sizing, code compliance, and manufacturer-aligned setup on every Navien install.

Bradford White is known for reliable construction, long-term dependability, and consistent performance in residential settings. They offer standard and high-capacity options suited for various household sizes. At Cosmic Plumbing, we install Bradford White units with attention to safe removal, clean setup, and proper sizing for McHenry area homes.

Proper venting ensures safe exhaust of combustion gases and prevents system shutdowns or error codes. Incorrect venting can cause performance drops, safety hazards, and voided warranties. At Cosmic Plumbing, we follow manufacturer specifications and local codes to guarantee safe, efficient operation in every installation.

Battery backup systems are essential during power outages caused by storms, which are common during spring thaws and heavy rain in northern Illinois. They automatically activate when primary pumps lose power, preventing basement flooding. At Cosmic Plumbing, we integrate backup systems with existing setups to provide year-round protection.

Underground discharge lines move water away from your foundation, preventing erosion, freezing issues, and water recycling back toward the home. They offer a clean, concealed solution that complies with local drainage requirements. At Cosmic Plumbing, we design durable systems for long-term water control in McHenry and surrounding towns.

Whole-house filtration removes sediment, minerals, and contaminants that cause buildup in pipes, faucets, and appliances. This extends the lifespan of your plumbing system and improves water taste and odor. At Cosmic Plumbing, we customize filtration systems based on your home's specific water conditions.

Tank corrosion, persistent leaks, and failing heating elements typically signal end-of-life for tank-style water heaters, usually after 10 to 15 years. Continuing repairs often costs more than replacement and risks water damage. At Cosmic Plumbing, we provide honest assessments based on safety and cost-effectiveness for McHenry homeowners.

Hard water and mineral content common in northern Illinois can accelerate sediment buildup and corrosion in tank-style heaters. This reduces efficiency and shortens system lifespan. At Cosmic Plumbing, we recommend regular flushing and filtration options to protect your investment and maintain performance.

Proper sizing depends on household hot water demand, number of fixtures, and simultaneous usage patterns. Undersized units cause temperature drops, while oversized systems waste energy. At Cosmic Plumbing, we conduct consultation-driven assessments to ensure correct Navien system selection for every home.

Testing the float switch, clearing the discharge line, and checking battery backup function are critical before heavy snowmelt and spring rains. Preventive checks reduce failure risk during peak flood season. At Cosmic Plumbing, we encourage proactive service calls to keep systems reliable when they're needed most.