Two decades of HVAC excellence — founded in 2006 on expertise, honesty, and a passion for great service. TSSA & OPA registered.
Since 2006
Five Star Air Tech (五星冷暖气公司) was founded in 2006 with a simple mission: provide honest, expert HVAC services at fair prices. What started as a small repair shop has grown into a full-service heating and cooling company serving thousands of homes and businesses across the Greater Toronto Area.
We specialize in AC and furnace sales, professional installation, conversions (electric to gas, oil to gas, water heating to forced air), and expert repair services. We work on all major brands — from residential split systems to large commercial rooftop units over 400,000 BTU.
Over 20 years we've earned the trust of our community through transparent pricing, skilled technicians, and a commitment to doing the job right the first time. When you call Five Star Air Tech, you're not just calling a repair company — you're calling a partner in your comfort.
Master Zhang graduated from a top university with a degree in Refrigeration, Heating & Ventilation. Starting his HVAC career in 1984, he brings over 40 years of hands-on experience. He personally handles complex repairs that others couldn't solve. 60% of our clients come from referrals.
Get in TouchFully licensed and registered. Your warranty and government rebates are guaranteed.
Professional AC installation and repair license with ODP certification
Certified for gas furnace installation. Can handle rooftop units over 400,000 BTU
Registered with Technical Standards & Safety Authority. Legal and compliant
Ontario Power Authority registered. Guaranteed government rebate approval
Important: Manufacturer warranties require installation by licensed technicians. Government rebates also require licensed installers for approval. Always ask to see licenses before installation — it's your right and protection.
Everything we do is guided by these principles — they're the reason clients come back and recommend us to others.
We give honest assessments and transparent quotes. No unnecessary upsells, no hidden fees.
Our technicians are fully licensed and continuously trained on the latest AC systems and technologies.
We know a broken AC is urgent. That's why we offer same-day service and fast response times.
Premium service doesn't have to cost a fortune. We price fairly and stand behind our work with a warranty.
We're a tight-knit team of certified HVAC technicians and customer service professionals who genuinely care about your comfort.
Founder & Lead Technician
University degree in Refrigeration, Heating & Ventilation. HVAC career since 1984 (40+ years). Licensed 313A & G2 technician. Personally solves complex repairs others couldn't fix.
Greater Toronto Area
Serving Markham, Richmond Hill, Scarborough, Mississauga, Toronto and surrounding areas. Fast response, same-day installation available.
Multilingual Service
Phone/WeChat: 416-887-8831
English, Cantonese, Mandarin
Email: zhangjiangnan88@gmail.com
We are always looking for skilled technicians with G2 or G3 licenses. Experience preferred. Quality over quantity — we never outsource. Join a team that values craftsmanship and customer satisfaction.
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