PEI home · September 2026−97.5%
80020Bq/m³ before → after
100
200 guideline
Scale 0 to 1,000 Bq/m³. Health Canada recommends fixing any home above 200.
Charlottetown · All of Prince Edward Island
Professional guidance for complex issues.
Home inspections, radon testing and mitigation, energy consulting and home diagnostics from one certified, local inspector. Clear answers about your home, in plain language.
InterNACHI certifiedC-NRPP radon professionalRed Seal CarpenterReports within 24 hours
Services
What we do
01
Home Inspections
Pre-purchase and pre-listing inspections with a clear written report within 24 hours.
Inspections → 02Radon Measurement & Mitigation
Certified testing and mitigation systems, with a year of monitoring included on every install.
Radon → 03Energy Consulting
Find where your home loses heat and money, and which upgrades are worth doing first.
Energy → 04Home Diagnostic Consultations
Drafts, damp, condensation or a smell you can't place. We find the cause, not just the symptom.
Diagnostics →Buying or selling? Add real estate radon testing to your inspection: 72 hours, report the moment the test ends.
Radon results on PEI
Real readings from recent installs
Radon is measured in becquerels per cubic metre (Bq/m³). Health Canada's guideline is 200. These two homes now sit far below it.
PEI home · September 2026−97.4%
57215Bq/m³ before → after
100
200 guideline
Scale 0 to 1,000 Bq/m³. Health Canada recommends fixing any home above 200.
Meet the Owner
Zackary Hennessey
Zackary is a certified home inspector, a C-NRPP certified radon measurement and mitigation professional, and a Red Seal Carpenter, so he understands how houses are built as well as how they fail.
Every job is handled by Zack himself, from the first call to the final report. You'll know what he found, what it means, and what to do about it.
Credentials
Certified, and you can check
InterNACHI Certified Professional Inspector® (CPI)NACHI25062217
Verify
Verify
C-NRPP Radon Measurement & Mitigation ProfessionalCRT-202962 · CRMT-202939
Verify with C-NRPP
Verify with C-NRPP
InterNACHI Certified Residential Property Inspector
InterNACHI Certified Thermography Inspector (Infrared Certified®)
InterNACHI Certified Moisture Intrusion Inspector
InterNACHI Certified Indoor Air Quality Inspector
InterNACHI Certified New Construction Inspector
InterNACHI Certified Green Building Inspector
InterNACHI Certified Safe Workplace Inspector
Red Seal CarpenterCertificate 03‑2228
Verify with the PEI registry
Verify with the PEI registry
Net Zero Home Qualified Builder
Member, Canadian Association of Radon Scientists and Technologists
What clients say
★★★★★
“I highly recommend Zach and Cleya Diagnostics Ltd.! From start to finish, Zach was professional, knowledgeable, friendly, and took the time to explain everything clearly. He did an amazing job installing our radon mitigation system and made the whole process easy and stress-free. The quality of his work was excellent, and you can tell he genuinely takes pride in what he does. He was reliable, thorough, and left everything clean and tidy when the job was finished.”
Client testimonial
“We were privileged to have Zack recommended to us to do our home inspection. He was professional, intelligent, polite and very precise. We would highly recommend him.”
Recommends
“Cleya was an excellent help to us while deciding on upgrades to our aging heating system in our home. Zack provided a thorough analysis of all heating options and recommendations best suited for our home. He also incorporated the results of our home energy audit making it easier for us to action next steps.”
★★★★★
“Zack was great to work with. Communication was excellent throughout the process. He was on time. Project completed in a day as scheduled. He noticed the sump pump did not need to be sealed off which saved us a bit of money. Our radon level is now at a safe level.”
Client testimonial
“Cleya Diagnostics did a top notch job from start to finish when helping me to reduce the radon level in my basement. Zack went through the entire process and explained each step clearly and professionally. With the new system in place including a monitor for future readings, my mind is now at ease going forward. Thanks again for your friendly assistance! Much appreciated!!”
Ready to book, or not sure what you need?
Call or text Zack. You'll get a straight answer about what your home needs, and what it doesn't.