About Us

MasterSweep Professional Chimney Service is locally owned and operated by Gray Biggins and Rainbow Monds, established in Kelowna in 2002.  We are proud to be a small, local Okanagan company.

We are fully WETT Certified, and we are the only two WETT Certified Advanced Sweeps and WETT Certified Comprehensive Inspectors in the area, with a combined experience of over 50 years in the industry. We offer something different to our customers – expert service!

Sweeping and inspecting wood burning systems is what we specialize in year round, day in and day out. 

We believe in being professional, and in having proper training and credentials.

We are members of the
  • Wood Energy Technicians of BC (WETBC)
  • The Chimney Safety Association of Canada
  • Thermal Environmental Comfort Association (TECA)
Gray Biggins has 30+ years field experience.
  • WETT Certified #5449 as an Advanced Technician, Advanced Sweep, and SITE Comprehensive Inspector
  • Ventilation Certification through TECA #VG06-582
Rainbow Monds has 20+ years field experience.
  • WETT Certified #6213 as an Advanced Technician, Advanced Sweep, and SITE Comprehensive Inspector
  • Ventilation Certification through TECA #VG06-587
meet our team
what Our customers say:

“We would personally like to thank  Rainbow and Gray for their amazing working in our new home. From the professional and sincere recommendations of what we needed to the installation and implementation of what is an amazing final result; we cannot be happier with the work and the relationship we have with them. An honest and direct approach to requirements developed instant trust and a long future of providing us with their professionalism and knowledge to maintain our Polar G2 Boiler and the amazing Fireplace Insert they installed for us. We highly recommend them to everyone we speak to, and feel free to contact us for a verbal reference on this amazing couple who do outstanding work.” Ed and Leanne