Replace the UV lamp in your Heaven Fresh NaturoPureâ„¢ HF280 Multi-Technology HEPA & Ionic Air Purifier to kill pollutants using germicidal UV light. UV Lamp Features Compatible with: Heaven Fresh NaturoPureâ„¢ HF280 Multi-Technology HEPA & Ionic Air Purifier UV Wavelength: 254 nm (germicidal wavelength) Long life UV lamp: Over 10,000 hours