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Professional Service

A-1 Stop Shop Heating & Cooling is the professional HVAC company serving residential and commercial clients in the London, St. Thomas, and surrounding areas.

Welcome to A-1 Stop Shop Heating & Cooling: Your Heating Contractor in London

A-1 Stop Shop Heating & Cooling are your trusted air conditioning and heating contractor in London. Keeping your HVAC units in good shape is our job. Whether you need your air conditioning to keep you comfortable during the summer or your furnace to make sure you’re warm in the winter. We are able to offer repair and maintenance on all makes of units for both residential and commercial clients. We use Canadian-made equipment and Canadian manufacturers in as much of our work as possible.

We offer exceptional service – guaranteed. Not only are we committed to high-end service, we also offer 24-hour emergency service so you can take advantage of our expertise at a time that is most convenient for you.

We are one of London’s most experienced and professional HVAC contractor’s. Give us a call today to request a quote.

We are authorized dealers of:

Napoleon Heating & Cooling

The businesses that are part of our company include:

DuCharme Systems

Orchard Heating

Mitro Sheet Metal

Roberts Brothers Sheet Metal

HAP Heating and Air Conditioning

GAS Associated Systems

No High-Pressure Sales

A-1 Stop Shop Heating & Cooling is a non-commission-based business so you will never be pressured to buy something you may not need. If your furnace or air conditioner can be restored to working order through repairs instead, we’ll tell you.

Professional Affiliations

North American Technical Excellence (NATE) Quality Circle Contractor
CSA Group
Ontario Power Authority
Energy Star
Snap Financial
Technical Standards and Safety Authority (TSSA)

HVAC Services


From residential installation to commercial maintenance, we do it all.

No Sales Pressure


We offer a wide range of products.

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