The high-performance, renewable, low-maintenance solution to cleaner air.


  • Captures up to 99% of airborne particles passing through the system
  • Self-regulating power supply maintains high efficiency as the filter loads
  • Low maintenance solution eliminates the need for replacement
  • Test button to verify operation 
  • Optional anti-microbial post filter to increase efficiency
  • 5-Year warranty


* Installation is included in the listed price. Once payment is verified our office will contact you to schedule.



Honeywell F300


    Contact Us

    Phone: 603.436.8811

    Text:     938.444.4537

    Email Us


    8 Continental Dr. Exeter, NH 03833

    6 Central Ave. Wolfeboro, NH 03894

    Mailing Address

    8E Continental Dr.

    Exeter, NH 03833

    © 2019 by Key Heating & Air Conditioning Inc.