Boiler Cleaning or Red Tagged?
Annual boiler cleaning, CO testing, demineralized water service, and red tag clearance — by certified boiler technicians. Not HVAC. Boilers only.
CALL 1.888.563.1515Professional Boiler Cleaning & Tune-Up
An annual boiler cleaning is essential for safe, efficient operation — and required by most manufacturers to keep your warranty valid. Over time, scale, soot, and debris build up inside your boiler, reducing efficiency and creating potential safety hazards.
The Boiler Guys have been cleaning and servicing boilers in Toronto since 2003. We specialize exclusively in boilers — not HVAC, not furnaces. Our certified technicians perform a thorough cleaning, full inspection, CO test, and written service report so you have documentation for your warranty.
What's Included in Our Boiler Cleaning:
- Complete combustion chamber cleaning
- Heat exchanger inspection and cleaning
- Burner cleaning and adjustment
- Flue and venting inspection
- Safety controls testing
- Pressure and temperature checks
- Combustion analysis
- Carbon monoxide (CO) test
- Written service report for warranty records
Annual Cleaning Is Required to Keep Your Warranty Valid
Most boiler manufacturers — including Viessmann, Weil-McLain, NTI, and others — require documented annual cleaning and service to maintain your warranty. Skipping a year can void your coverage. The Boiler Guys provide a written service report after every cleaning so you have the documentation you need.
Additional Boiler Services
Beyond the annual clean, we offer a full range of boiler-specific services. We work exclusively on boilers — not HVAC systems.
Carbon Monoxide (CO) Testing
Every boiler cleaning includes a CO test. Carbon monoxide is odourless and invisible — a malfunctioning boiler can produce dangerous levels without any warning. We test combustion gases and flue output to confirm your boiler is venting safely and completely.
Demineralized Water Service
Hard Toronto tap water contains minerals that deposit inside your boiler and hydronic system over time — reducing efficiency, causing noise, and shortening equipment life. We offer demineralized water service to flush and refill your system with treated water, protecting your boiler and extending its lifespan.
Boiler Inspections
Need a standalone inspection — for a home purchase, insurance requirement, or peace of mind? Our certified technicians perform a thorough boiler inspection and provide a written report covering the condition of all major components, safety controls, venting, and overall system health.
Warranty Documentation
Every cleaning comes with a written service report. Keep it on file — your manufacturer requires proof of annual service to honour warranty claims. We make it easy to stay compliant and protected year after year.
Pre-Season Tune-Up
Don't wait until your boiler breaks down on the coldest night of the year. Book your annual cleaning before the heating season starts — typically September or October — and head into winter with confidence that your system is clean, safe, and ready to perform.
Been Red Tagged? Call Us.
Stop wasting time and money with inexperienced technicians who don't know boilers. The Boiler Guys have saved thousands of GTA customers from cold homes, repeat service calls, and unnecessary replacements. We specialize exclusively in boilers — not HVAC, not furnaces. When your boiler is red tagged or shut down, one call gets you a certified boiler technician who knows exactly what to do.
Book Your Annual Boiler Cleaning Today
Protect your warranty, your family, and your equipment. Toronto's boiler specialists since 2003.