Surround Air XJ-2100 Ionic air purifier is very easy to clean with no filters to replace. In a clinical test removed 99.5% of particles in a 128 cubic-foot chamber. This ionic air purifier can be used in home or vehicle. Very quiet operation.

Surround Air Multi-Tech XJ-3000D Air Purifier is efficient air purifier with low replacement cost and low power usage. It also a very effective air purifier that combines the top five technologies into one unit: air ionizer for particles, HEPA air filter for dust and allergens, germicidal UV light for micro-organisms, activated carbon filter for chemicals, smoke and odors, and an anti-bacterial pre-filter for larger particles.

Surround Air Multi Tech XJ-3000E Air Purifier combines the top 5 technologies into one unit with attractive dark gray casing. 1. Air Ionizer for particles. 2. HEPA Air Filter for dust & allergens. 3. Germicidal UV Light for micro-organisms. 4. Activated Carbon Filter for chemicals, smoke & odors. 5. Anti-Bacterial Pre-Filter for larger particles. Everything You Need in an Air Purifier: Most Effective Dust & Allergen Filter Available.

Surround Air Multi-Tech XJ-3000C is the only air purifier that combines the top six technologies into one unit: true HEPA filter for dust and allergens, germicidal UV Lamp to destroy micro-organisms, activated carbon filter for chemicals, smoke, odors, ionizer for particles and bacteria, programmable sanitizer for odors, and anti-bacterial pre-filter for larger particles.

This top-rated air purifier features a wide array of sensors and monitors (Diagnostic sensors, UV light and ionizer indicators) to let you know everything from which pollutants are detected to when to change the filters. The Intelli-Pro is energy efficient, and uses sensor technology to reduce electricity usage. Just select "Automatic" mode to maximize performance and energy savings. This hepa air purifier also offers low-cost replacement filter and UV lamp.