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LFZ Heating & Cooling
- Diagnosed
- Fair
- Expertise
“I am so glad I chose to go with this company instead of local companies( I live hour and half East of GTA)- price was much more reasonable for new Lennox unit.”
Best Architects in Oshawa, ON
24 firms listed · all 24 in Oshawa · 7 open 24/7 · 15 open weekends · 18 rated 4.5+
Data verified October 16, 2026
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Elmridge AIR Comfort
- Water Heater
- Hvac
- Needs
“I have had many problems with my Heating Unit, and other companies have come in and given me a temporary fix, but somehow I kept ending up in the same position - no heat!”
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Max Comfort Heating & Cooling
- Fair
- Clean
- Questions
“You call Max Comfort and in 24 hours they have replaced your ancient furnace for a new one and you are toasty warm, amazing customer service, fast tidy efficient well priced and no upselling.”
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KDM Gas
- Efficient
- Fireplace
- Family
“In the end, it's the little touches, like making sure our water heater exhaust is set up properly, or perfecting the LNG hookup to our BBQ that have made KDM our first and last choice for heating, air conditioning & everything in between.”
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Cornerstone Drafting and Design
- Basement
- Permit
- House
“Darryl Kennedy provided the architectural drawings for my house basement in northern Oshawa which was a legal requirement and the work was done carefully and very professionally.”
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Tracey Refrigeration Heating & Air Conditioning
- Job
- Unit
- Family
“When we needed a new air conditoner and furnace ASAP he was quick to help us and he did an awesome job, and was happy to help us afterwards (on his personal time) to register for the warranty!”
The 24 firms listed for Oshawa, ON provide architectural services. The building types they take, the services they include and the registrations they claim are taken from their own websites, and the ratings and quotes come from public reviews.
Area overview: Oshawa, ON
All 24 firms we list here are in Oshawa itself. We have 26 firms in Oshawa on file; this page shows the highest-rated 24. 21 of the firms on this page have a rating, from 3.7 to 5.0 across 554 reviews; 5 have 50 or more reviews and 18 are rated 4.5 or higher. When customers rate these firms on specific qualities, they most often praise professionalism (94%), quality (89%) and responsiveness (85%). The topics that come up most in reviews of the firms on this page are "price" and "efficient". 7 are open around the clock; 15 are open on Saturdays and 10 on Sundays. 3 show a licence on their websites. Domain records put 6 websites of the firms on this page at ten or more years old; the oldest dates from 2000. 8 offer emergency call-outs; 2 offer financing or payment plans; 11 give free estimates; 1 is family- or locally-owned and 4 list coupons or special offers. We have a website on file for 22 of the firms on this page; 19 publish a contact page; 18 list a public email and 1 takes bookings online. We count these figures across the firms on this page; hours and prices change, so confirm the details with the firm before you book.
What can an architect's website tell me?
22 of the 24 firms here give a web address. Look for photographs of finished buildings rather than renderings, and for work of your type and scale. A firm that designs schools and a firm that designs laneway houses are answering different questions, and the portfolio usually says which one you are looking at.
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Active Climate Mechanical
- Duct
- Expertise
- Project
“Logan helped me out when my AC broke down on one of the hottest days of the summer and was right over quick and fixed it all up , would def recommend Active Climate Mechanical .”
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Comfy Life Heating & Cooling
- Projects
- Money
- Furnace
“I gave them a call… to my surprise they were efficient in responding and not only that was able to provide me service the following day to come take a look and service my AC that same day.”
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Ontario Smart Heating and Cooling Inc
- Future
- Heat Pump
- Knowledge
“I wish if I could have given this company over 5 stars, my HVAC system was blowing cold air, called this company, within an hour technician showed up, professionalism is their top priority , diagnosed the problem & fixed it right away charged me wit...”
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Mica Energy Solutions Inc.
- Call
- Family
- Price
“Their years of experience and tailored industry knowledge are just a few of the many reasons they remain the contractor of choice for all of One York Construction Management's heating and cooling needs.”
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Cullen Heating and Air Conditioning Inc.
- Price
- Family
- Furnace
“Great service, really friendly and knowledgeable, great communication, got a quote, 3 days later, gas heater was installed in my garage.”
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Brothers Hvac
“Brothers HVAC has installed our Generator and a gas fireplace for us .”
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Oshawa Furnace and A/C Repair
“When i face AC Problem in my home, i called Oshawa Furnace and A/C Repair to fix and maintenance.”
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Pure Mechanical Group Inc.
- Price
“Technician was there within the hour and had it repaired same day.”
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Enviroaire Mechanical & Electrical LTD
“Performing regular and routine checks to keep equipment running is important. This will help prevent any unanticipated equipment failure. With carefully planned maintenance before there is an actual problem, it should ideally be performed while the e...”
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416 Heating and Cooling
- Furnace
- Problem
“My air conditioner was still giving me trouble, so I called again, and the technician arrived immediately and resolved the issue.”
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Keep Cool Mechanical
“Corey and his team have delivered quality service time and time again to our aging appliances, while offering tips on how to improve our efficiencies.”
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Bronze Plaque USA
“We create durable, personalized plaques suitable for cemetery use, architectural use, public art and many other applications. Our world first design system allows you a whole new level of hands-on creative input. It is user friendly and we can view y...”
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Heat/Cool Depot
“He was honest in diagnosis and kept me informed about the work they are doing.”
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Comfort Trust Ltd.
“Comfort Trust has been looking after our central heating and air conditioning systems for our residential house and business properties for the last 8 years.”
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Premier Elevator Inc.
- Business
- Company
“Top of the line product with excellent customer service from start to finish.”
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Hawkridge Hvac
“Always there to help!”
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Benan Hanoudi Architectural Services
“Benan Hanoudi Architect is based in Oshawa, Ontario offering a full range of architectural design services. We offer comprehensive design concepts for different sizes of buildings. We are committed to each client's needs through direct involvement an...”
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Cord Coordinated Design Inc.
Architectural Services in Oshawa, ON Cost Estimates
Minimum cost
$852
Maximum cost
$45387
National Average
$7438
Avg Per Hour Rates
$268
$2836
$12704
Typical price range is based on 491 cost profiles
Why these companies made our list
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