How Can We Help You Stay Cool?
A reliable air conditioner makes all the difference during Ottawa’s hot, humid summers. We’re here to keep your system running properly, so your home stays comfortable when you need it most.
AC Repairs & Emergency Service
If your air conditioner is blowing warm air, making unusual noises, leaking, or not turning on, we will diagnose the issue quickly and explain your options clearly. Our technicians focus on getting your system running properly without unnecessary repairs.
AC Installation & Replacement
If your current unit is older, inefficient, or beyond repair, we install properly sized, high-efficiency air conditioning systems designed for long-term performance. We help you choose the right system for your home, layout, and budget.
AC Maintenance & Tune Ups
Regular maintenance keeps your air conditioner operating efficiently during Ottawa’s hottest months. Our tune-ups include a full system inspection, cleaning, safety checks, and performance testing to help prevent unexpected breakdowns.
Why Choose Us?
Expertise You Can Trust
Local Experts
We’re a local business, not a large corporation. Our team lives and works right here in Ottawa.
Competitive Pricing
As a high-volume company, we pass our savings directly on to you.
Trusted Professionals
All our installers are licensed, in-house refrigeration mechanics, ensuring top quality and a consistent experience.
Proudly Serving Ottawa Homes for Over 32 Years
At Ambassador HVAC, we’ve built our reputation on keeping Ottawa homeowners comfortable year-round. For more than 32 years, our licensed technicians have been helping families across the city with heating and cooling needs.
Our long-standing partnerships with many of Ottawa’s leading builders are a reflection of the quality, trust, and consistency we bring to every job.
Honest Advice You Can Trust
"Had a great chat today with a staff member who walked me through the steps needed to move my AC unit. In the end agreed that it wasn’t the best option for me. Will for sure look for future work needed, as I appreciated the honesty and professionalism."
Greg J
Fast Diagnosis & Friendly Service
"Ambassador technicians identified the problem with my air conditioner right away and fixed it immediately. They were very friendly and helpful, and I knew I was in good hands."
Cynthia Waldie
Quality Installation & Great Pricing
"We had great service from Bob and the installers, Kyle and Matt. Their service was quick, and the AC installation was done very well. The company has great pricing and offers a great quality product."
Guy Nadeau
Our Customers Say It Best
Full system upgrade installed efficiently, with fast follow-up on a minor issue.
“We recently replaced our furnace, ac, air filter and added a flow through humidifier during the sales process, Robert was always available and patient as we reviewed our options. The team who did our installation ( Marc and Kyle) were efficient, knowledgeable and respectful of our home. Overall our experience with Ambassador Dearie was professional and very customer focused. We had a minor leak in the coil of the humidifier and it was replaced promptly!”
Frances Tanner
Timely, professional replacement of furnace and AC, with every question answered.
“I am very pleased with the service provided for the replacement of my furnace and air conditioner, as well as the cleaning of my fireplace. Ambassador Dearie's team completed all the work in a timely, professional manner and were able to answer any questions I had throughout the job.”
Judy Harrison
Concerns about AC installation were carefully listened to and resolved with clear communication.
“I am an ambassador hvac customer. Their management was easily reachable, and they took time to carefully listen to my concerns for air conditioner installation. Their management explained to me how they are committed to helping their clients and that they have been helping customers for over 30 years. After further interaction with them I am happy to modify my review and appreciate all their help.”
Akshay Saini
Two oil furnaces were replaced with new gas units, done thoroughly and professionally.
“Replacing 2 oil furnaces for new gas furnaces was done in a professional and thorough manner. To find their pears one only has to look for the best of the best in their industry. We very satisfied with the results.”
Richard Goulet
Quick and knowledgeable repair service that got the furnace and vent working again.
“Service team was really responsive, we were provided with great professional repair service from Technician Mr. Ye for both our furnace and vent, he has strong knowledge for there and gave them a quick and valid repair. Really appreciate his help and I strongly recommend Ambassador Dearie Hvac!”
Xiangtianyu Kong
A complex system explained clearly, saving money on bills and fixing AC issues.
“My tech (Martin) was absolutely amazing. I have a kind of confusing two-unit system (AC/Heat Pump, Furnace) that I've never fully understood how it worked. He was able to walk me through the whole system and explain at what temps things should be turned on and off, helped me save money on my electric/heating bills, and also figured out why my AC wouldn't shut off in the winter. Scheduling a call was super easy, they came on time, were very efficient, and there were no surprises with price. Highly recommend and will use again!”
Samantha Jennings
New furnace and heat pump installed on time, professionally, and at a better price than competitors.
“I had my gas furnace/AC system replaced with a new furnace/air heat pump system Feb 13, 2024. The team of 2 arrived on time, worked steadily and professionally until 3:30. They cleaned up thoroughly, removed all the old equipment and then took me thru the workings of the new system and digital thermostat. Needless to say I am very impressed with everyone at Ambassador Dearie Hvac and highly recommend them. Their pricing was seriously better than the competition. Thank you.”
Angela Croswell-Wilton
Multiple jobs completed promptly with honest service and no sales pressure.
“They have now supplied and installed AC for me and two relatives + major furnace repair at my home. Incredibly prompt, honest and fair! I usually have very little tolerance for pressure and upsell tactics - there's none of that with any of the sales, service or tech teams. Just efficient, knowledgeable and (worth repeating... ) honest!”
Stephanie Lockhart
Furnace issue resolved quickly, now working perfectly again.
“I recently experienced an issue with my furnace, but fortunately Jay the technicia provided outstanding service. He resolved the problem, and now my furnace is working perfectly again.”
Sergio Narvaez
What Sets Our AC Service Apart
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In-House Experts
From AC service calls to full installations and seasonal maintenance, our skilled team handles every step to ensure consistent quality and peace of mind.
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Customer-Focused Service
We are a local, family-run business and treat every homeowner with respect. We take feedback seriously and always follow up when needed.
Quality Products
As a Lennox® Premium Dealer, we install high-efficiency, quiet air conditioning systems built for long-term performance.
Licensed Professionals
All installers are full-time, licensed employees who are trained to handle air conditioning systems safely and correctly.
Flexible Financing
We offer six months of no payment, no interest to help make your AC investment more manageable.
What You Can Expect From Us
Getting a new air conditioner should be clear and stress-free. Our process is designed to be transparent, efficient, and handled by our licensed team from start to finish.
Your Free, In-Home Assessment
When you contact us, we schedule a visit from a licensed Ambassador HVAC technician.
Our team members are skilled professionals who provide a thorough and accurate assessment of your current cooling system.
We listen to your concerns, evaluate your home, and recommend the right air conditioning solution for your space and budget.
Quality Equipment from Leading Manufacturers
We install and service equipment from leading manufacturers, including Lennox, Goodman, Comfort Aire, and Daikin. As a Lennox® Premium Dealer, we offer access to high performance heating and cooling systems backed by strong manufacturer warranties. By working with established, proven brands, we make sure every installation meets the standards Ottawa homeowners expect for comfort, efficiency, and long term reliability.
R-410A
Our Leading Gas Furnaces
Consistent airflow from the variable-speed blower
SilentComfort™ technology
Enhanced humidity control
Compatible with other Lennox products.
R-410A
Merit® gas furnaces
Patented clamshell design
Sturdy burners reduce noise
Smart installation features
Compatible with other Lennox products.
R-410A
Elite® gas furnaces
Patented clamshell design.
Insulated cabinet and sturdy burners keep operation quiet
Smart installation features
Compatible with other Lennox products.
Premium Comfort with Lennox® Furnaces
As a Lennox® Premium Dealer, we bring you one of the most trusted names in home heating. Lennox furnaces are known for their:
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High efficiency
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Quiet performance
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Industry-leading reliability.
Many models are ENERGY STAR® qualified, helping homeowners cut down on energy bills while keeping their homes consistently comfortable. With options that include advanced temperature control and smart home integration, Lennox sets the standard for comfort and long-term value.
Trusted Performance with Goodman® Furnaces
Goodman® furnaces are part of the core product line we offer, known for delivering comfort and value. Their systems stand out for strong heating performance, straightforward maintenance, and excellent warranty coverage that protects your investment for years to come.
Many Goodman® models include multi-speed blower motors for steady airflow, quiet operation, and improved indoor air quality.
With ENERGY STAR® options available, Goodman® combines efficiency with affordability, making it a smart choice for families who want comfort that lasts without added complexity.
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GMVM97
modulating gas furnace
Comfort Bridge™ technology adapts system performance.
Quiet, variable-speed blower.
Thermally insulated cabinet reduces air leaks.
Up to 98% AFUE efficiency means lower energy bills.
Durable dual heat exchangers.
GM9C96
Two-Stage gas furnaces
Multi-speed ECM motor – adjusts airflow.
Insulated cabinet – reduces air leaks.
Two-stage gas valve – saves energy.
Up to 96% AFUE efficiency – lower energy use.
Durable dual heat exchangers.
GMVC96
Two-Stage gas furnaces
Multi-speed ECM motor – adjusts airflow.
Comfort
Bridge™ technology – customizes performance
Two-stage gas valve – adapts energy use for efficient heating.
Up to 96% AFUE efficiency – lower energy costs.
Durable dual heat exchangers.
Frequently Asked Questions About AC
Most central air conditioning systems last 12 to 15 years with proper maintenance.
It should be inspected and serviced once a year, ideally in the spring before heavy summer use.
Common causes include low refrigerant, dirty coils, thermostat issues, or electrical problems. A technician can diagnose the issue quickly.
If the system is older, requires frequent repairs, or is inefficient, replacement may be more cost-effective long-term.
Most standard residential installations are completed within one day.
System sizing depends on square footage, insulation, layout, and other factors. A proper in-home assessment ensures accurate sizing.
Restricted airflow, dirty filters, or refrigerant issues can cause coils to freeze.
Higher efficiency systems can reduce energy consumption and improve indoor comfort over time.
Yes, we offer six-month no-payment, no-interest financing options.
Serving the Ottawa Area
From downtown Ottawa to the surrounding communities, we’re proud to serve homeowners across the region.
✔ Ottawa
✔ Ottawa South
✔ Orleans
✔ Beacon Hill
✔ Kanata
✔ Cumberland
✔ Vanier
✔ Navan
✔ Pineview
✔ Riverside
✔ Gloucester
✔ Greely
✔ Alta Vista
✔ Rockland
✔ Overbrook
✔ Metcalfe
✔ Bridlewood
✔ Osgoode
✔ Barrhaven
✔ Manotick
