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Have an emergency Heating or Cooling problem?
Call us 24/7 for Emergency Repair Service.


At Denaeyer Mechanical, we’re experts in residential HVAC systems. We have been helping homeowners in Kitchener-Waterloo, Guelph-Wellington, Brantford and Paris, and across South-Western Ontario since 1988. We’re here to help you too. HVAC (Heating, Ventilation, and Air Conditioning), is a vital part of any home to be both cost and energy efficient. If your residential property – whether it’s an apartment block, condo, or house – needs any residential HVAC equipment replacements, give us a call today.


Whether you’re experiencing a breakdown, need regular maintenance, or want a brand new furnace system installed, our team has the expertise and experience to help.

Our furnace and heating services include:

Heat Pump Service

Our team of expert technicians specializes in emergency repair and maintenance for all types of heat pump systems. Whether you’re in need of a new install or just want to keep your system running smoothly, we’ve got you covered.

Our heat pump services include:


At Denayer Mechanical, we take pride in providing top-notch emergency repair and maintenance services to keep your AC running smoothly all year round. If you’re in need of a new system installation, our team of experienced professionals will guide you through every step of the process to ensure you get a system that’s perfectly tailored to your needs.

Our air conditioning services include:

Hot Water Tank Service

We specialize in hot water tank emergency repair and maintenance, as well as new system installs. Our team of experienced professionals have the knowledge and tools needed to handle any issue that may arise, and we guarantee a fast response time you can count on.

Our heat pump services include:


A leader in residential HVAC installations. We always aim for exceptional service, which is why most repairs and installations are completed the same day. We also offer specialty services not covered by other HVAC companies, including indoor pool dehumidifier service.