About ATEL Air, Heating and Cooling

The ATEL AIR Story

It all began in 1949 with a spark—quite literally. Arthur Thom, an ambitious farmer-turned-electrician decided to wire a barn, marking the humble beginnings of what would become ATEL Air, Eastern Ontario’s most trusted name in home comfort.


But Arthur didn’t stop at barns. Fueled by curiosity and a desire to solve problems, he expanded into refrigeration, appliances, and air conditioning repairs.

By the 1950s, as entire towns were relocated for the St. Lawrence Seaway, ATEL Air was there, wiring homes and businesses in newly built neighborhoods. ATEL grew with the times, taking on challenges and setting new standards for reliability.

From a one-man electrical venture, ATEL Air transformed into a family business.

Today, in its second generation of ownership, the company continues to prioritize the values that built its reputation: showing up on time, using cutting-edge tools to diagnose problems accurately, and always delivering solutions that work.

Whether it’s providing whisper-quiet comfort furnace systems or offering innovative geothermal solutions, ATEL Air remains committed to bringing dependable comfort to its community.

We are dedicated to your indoor comfort all year long: from designing and installing your new comfort system to servicing your older equipment.


why choose us?

High Efficiency Products
ATEL Air installs environment friendly, high efficient equipment with state of the art technology.
Reliable products from ATEL Air
So efficient, we put our name on it.
Reliable Maintenance
ATEL Air offers a regular maintenance contract with every installation to ensure continued efficiency of your system.
Effective Problem Solving Through Inspection
ATEL Air technicians save you money by applying advanced diagnostics to quickly spot problems and ensure continued efficient operation of your equipment after the service call is completed.
Up Front Pricing
ATEL Air technicians will provide you with a detailed repair pricing before starting any repairs. This way you will know the total cost of the work before we start.
1-year Warranty Covering all Service Work and Repairs
ATEL Air technicians receive weekly training for most equipment we service and work on. ATEL Air buys all repair parts directly from the various manufacturers. Therefore we include a 1-year warranty on all repairs and service work. One more reason to trust ATEL Air.
14 Day Upgrade for all Repairs to Replacement Equipment*
Sometimes the fastest relief is to fix an old unit- not always the wisest decision. At ATEL Air we offer a 14 day upgrade to replace the equipment we just repaired. When we fix your equipment and you decide to replace it within 14 days we will credit those repair costs directly to the cost of the new equipment- giving you time to make the right decision and save your hard earned money.
Whisper Quiet Guarantee
Shhhhhh. Your heating and cooling equipment should be whisper quiet. We can make that happen. Ask us how and you will most likely find your heating and cooling equipment runs more efficiency at the same time. Ahhhhhh quiet and affordable…only with ATEL Air’s Whisper Quiet Guarantee.

* Some repairs do not qualify, please call for details.

The ATEL Air 100% Satisfaction Guarantee

My father, Arthur Thom, started ATEL in 1949. I grew up helping him in the field, holding flashlights and passing tools. Since then I’ve earned a long list of technical degrees and certifications, but one of the most important lessons of all was the first one I learned from my Dad: treat your customers right.

I know we have a great team and we work hard to live up to our guarantee every day. As a result we get great reviews from our customers. But if you ever feel we have not lived up to our promise, I invite you to let me know. I will do everything I can to make things right.

Sincerely, Jimmie Thom, ATEL Air Owner and Chief Technician

Air Installation Guarantee

We guarantee that your new heating or cooling equipment will perform as per the manufacturer specifications. We will review these with you during our consultation so you can make the right decision for your needs and budget.

  • If your equipment does not work as designed, we will come back and fix it for free within 1 year from date of installation.
  • If the unit is still not performing up to manufacturer specifications, we will replace any faulty parts for free or even replace the system with a comparable one for free.

We pledge that your new equipment will deliver the following heating or cooling performance:

  • Cooling systems will give you an indoor temperature of 23°C or better even on a 32°C summer day.
  • Heating systems will provide at least 22°C indoor temperature on a -35°C winter day.
Quality Installation Guarantee

We guarantee to design, size and install the proper equipment for your home or business. The equipment will be installed as per all current codes and requirements of the day. A complete start up and run test will record the performance data, and the numbers will be recorded with the equipment paperwork on registration for warranty.

Quality Products Guarantee

ATEL Air will only recommend brands we know from experience provide excellent equipment and after sales support.

These brands include: Trane FurnacesTrane Air ConditionersRunTru Furnaces, RunTru Air Conditioners, Nordic,  Navien Tankless Water HeatersRinnai Tankless Water Heaters, Mitsubishi, John Wood, Water Furnace and more.

Guarantee Exceptions

Unfortunately some things are beyond our control, and are NOT covered by the guarantee.

  1. Electricity, natural gas or other power source costs may rise. This is why we can guarantee efficiency of performance but not exact energy savings in dollars.
  2. Your home builder may have used poor building practices and you may still get poor airflow or hot and cold areas.
  3. Occasionally manufacturers may be delayed in getting parts we need.
  4. Product failure beyond our control.
Repair Guarantee

We guarantee our repairs for a full 2 years. If the same part fails again within that time, we will come back and fix it again for free. Ask us for details.

Customer Respect Guarantee

We promise to treat you the way we would want to be treated ourselves:

  1. We will arrive on time.
  2. We will be clean and presentable in appearance with a neat ATEL Air uniform.
  3. We will drive a clean, fully stocked truck with the ATEL Air logo.
  4. We will treat your home with care, and clean up after the completion of the work.
  5. We will only send polite licensed journeymen technicians.

ATEL Air is a member of the following organizations

HRAI
Heating, Refrigeration & Air Conditioning Institute of Canada.
OEL
Ontario Electrical League
RSES
Refrigeration Service Engineers Society
NCI
National Comfort Institute
TSSA
Technical Standards & Safety Authority
ESA
Electrical Safety Authority
CFIB
Canadian Federation of Independent Businesses
OPA
Ontario Power Authority
Canadian Geo Exchange
South Dundas Chamber of Commerce