We just had our tankless hot water system flushed and serviced by Harry. Booking the appointment was easy because Gilbert is prompt in replying, knowledgeable, courteous and always a pleasure to deal with. Harry arrived exactly on time and completed the job with attention to detail and took the time to explain exactly what he had done. He was respectful, polite and efficient. We would give this company more than 5 stars, if possible! It is wonderful to receive such great service! UPDATE JUNE 5, 2025 I just had my a/c maintenance done by Harry. Would never think of using any other company! Continuous outstanding service with honesty and integrity over the years! Thank you!
BUSINESS REVIEWS
High Efficiency Cooling & Heating Inc.
570 Alden Rd. Unit 3, Markham, ON, L3R8N5, Canada
Write a reviewAbout High Efficiency Cooling & Heating Inc.
High Efficiency Cooling & Heating Inc., based in Markham, is a trusted provider of HVAC services, renowned for their professional and knowledgeable technicians like Jason and Harry Yan. Praised for their honest advice and efficient maintenance work, they offer cost-effective solutions and valuable tips for system upkeep. Whether it's a routine tune-up or a full system installation, their team, including experts like Charton and Peter, ensures customer satisfaction with thorough follow-ups and clear explanations. Their commitment to quality service and competitive pricing makes them a go-to for all heating and cooling needs.
Customer reviews
Showing 201–250 of 1,648 published reviews.
We had a great experience with Liam. He was punctual, arriving exactly when he said he would, and he got to work right away. Liam was incredibly efficient and clearly very knowledgeable about what he was doing. He quickly diagnosed the issue with our system and had it fixed in no time. It’s rare to find someone who combines professionalism, skill, and great service so well. Highly recommend Liam to anyone needing work done, top-notch service from start to finish! ⭐️⭐️⭐️⭐️⭐️
Technician Sam was professional and efficient. Marco honored the quote for part and service although it should have been more. Thanks for your help!!!
Thank you Harry the technician who came to my house did the cooling system check up very polite good service and professional 👍👍👍
The best AC/Furnace installation & maintenance service provider. I have their service since 2018, very professional.
Great experience! Our HVAC was Sahil he quickly diagnosed and fixed the problem, also helped run me through the entire process. Highly recommend this company!!
Ramandeep, the tech was on time for our AC tune up service. He did an amazing job explaining the steps and left the space spot clean.
The technician was knowledgeable and friendly... great service.
Harry came and fixed my AC unit very fast and was very professional. I am pleased with his service. Thank you Harry!!
Harry was excellent and super informative. Definitely recommend and I'm grateful for his assistance!
Rana frome HE came to perform AC maintenance at my house and did a great job. He was knowledgeable and was able to answer my questions plus give some good tips as well.
This High Efficiency Cooling & Heating company is great! The technician on site today, Sam, is super excellent, efficient, professional and he knows the technical very well. He also has a big picture of his work and he helped us with membership issue by addressing our questions and concerns in a professional and caring way for clients. I strongly recommend this company and the services they provide and will continue to use all services from them. Joining the membership program is the best choice I made!
I had my fan coil repaired/cleaned by High Efficiency. They replaced the faulty actuator and the valve body. Asked them to descale the condenser too and I am pleased to say the cooling performance has improved drastically. They had to pay three visits, all punctual. Leon and Anand (I hope I’ve got the name correctly, if not my apologies) were very friendly, experienced and helpful. Very satisfied and highly recommend.
I recently hired High Efficiency Cooling and Heating for the first time after they came highly recommended, and I couldn’t be more pleased. Sam was professional, courteous, and very knowledgeable. He took the time to thoroughly inspect both my AC and furnace, explaining everything clearly along the way. It’s rare to find someone so dedicated and efficient. Highly recommend their services!
Sam did our AC maintenance today, was very polite and efficient.
Sam came to service our system. Before he came, a text message came to remind us that he was on his way. He came on time. He is really professional, polite, and helpful. Great experience with the service call.
Sam did an amazing job by fixing an issue with my A/C. He was very polite and professional!
We needed a 2nd opinion re our 20-year old A/C unit and Harry was scheduled to evaluate the equipment. He did a great job of explaining the details and answering all the questions - great work!
Sam, the service technician has done a great job on the AC checkup. Thanks.
Sahil provided great service! Walked me through all details and answered all questions. 5 stars deserved
Sahil (Sam) was very thorough to clean the condenser of my heat pump during this year's maintenance. He checked and made sure the system was working as designed. He answered all my questions with patience and provided very good advice. He did the same with my brother's heat pump next door. Excellent work!
Jason was great. On time, friendly, knowledgable. He answered all my questions clearly and provided tips and pointers Will use him and High Efficiency again Update Oct 2021 - since my original review I've used High Efficiency for all my HVAC needs. Jason just installed a humidifier for me and did a great job + took the time to explain the functions and features Update Nov 2022 - Great as always. I had an issue with my furnace and Gilbert helped me every step of the way, from explaining my options to helping me order the part required May 2025 - Sam was fantastic. Did more than previous techs and was very helpful. Happy customer for years!
Sam was very knowledgeable and spent the time to explain everything to us. We had a heat pump problem and they sent Sam the next day we called, he was able to quickly diagnose it and fix it. Highly recommend this company!
Awesome work Sam did, thanks.
The technician’ very nice and his skill so good
Install Central Humidifier All job was done fast and with good price!
Technician attend a scheduled maintenance services for our home cooling and heat pump system. Sahil was the technician, he called before arriving. He was punctual and completed the services to our satisfaction. He was cordial and answer all my questions.
To: High Efficiency cooling & Heating Thanks for your kindly, friendly & patiently with professional excellent service.👍
We scheduled an annual service of our heat pump and a technician came in promptly to do the work. He was very knowledgeable and professional and we are very pleased with his work.
Air cleaners and humidifiers: Repair; Air Exchange Excellent work and reasonable price. Troubleshooted the issue and took his time to fix the problem with my air exchange unit.
I had to laugh when I got an invitation from High Efficiency to submit an opinion on Google. Along with the invitation I got a recommendation of what to write here. So it would not surprise me if you see another Google entry saying the same thing! However, I will say, having used them several times before, every word they have asked me to write is true. They are excellent people to deal with. So here it is: The service technician arrived in the time window quoted and completed it within the time window too. He was polite, worked safely and cleanly, and explained what he had found and exactly the service he performed.
Sahil was very helpful and knowledgeable. He fixed the heating issue for me.
Harry provided great service and advice
Sam came to help and he was a very helpful, friendly, and nice man. Highly recommend his services to everyone.
Sam is the technician who finally fixed our furnace after no one else could figure out the issue. He’s responsible, smart, and a pleasure to work with. We truly appreciated his service!
We can't thank High Efficiency Cooling & Heating company for their superb service with our Heat Pump. They were recommended to us by our neighbour in our townhome complex and they didn't disappoint. Charton who is our Sales Rep/contact took the time to explain everything to us before we've made a decision and eventually had our heat pump installed over a year ago. We've had just two service calls within the year and in each instance, their promptness and attentive help have been both amazing. The last service call was today and I've again contacted Charton. I found out he's overseas on a vacation but this didn't deter him from arranging for a service department visit to check out the issue and to address it promptly. Hats off to Charton's promptness, through Marco as well who did the immediate follow -up with me for an appointment and lastly, Rana who came by today to work on the issue which is amazing. They've addressed the issue we've reported and we are completely happy with the level of service they always provide. I highly recommend them to anyone looking to replace their heating/cooling unit in the future. Charton, Marco, Rana - thank you to the three of you for your amazing help, promptness and great work!
Leon, the technician from High Efficiency Cooling and Heating Inc arrived on time to install a Honeywell Pro thermostat at my condo unit. He was very professional. He answered all my questions patiently and was methodical in getting the job done. Way to go Leon (Hope I got your name right).
I was very lucky to have Mr. Sahel as the service man to fix my leaking pipe gas problem. He was very thorough and knew his job very well. Very efficient and was patient to answer all my questions. Thumbs up to the High Efficiency Cooling and Heating Inc.and five stars to Mr. Sahel. May your tribe increase!
The experience with the technician was excellent. Sam was patient in answering all my queries and his work was very efficient.
Sam was knowledgeable and very helpful.and also very pleasant
Sam came over for maintenance on our furnace. He was very professional and explained every detail on how it works, what he did and what we need to do to extend the life of the unit. Thank you, Sam! 👍
Very professional. Easy to schedule. Liam & Sam were professional, tidy, efficient, knowledgeable & courteous. Would recommend! Jen
Liam and Sam are awesome and professional!
Sam & Liam did a great job ! 5 star service
I have my whole house humidifier replaced, not sure it's working well or not at this time. Will tell in winter time.
Great work done by Sam and Liam,nice attitude and efficient work
Liam did a great job in explaining and repairing the equipment. Thank you!
Thank you Johnny and Rane for your excellent customer service.
Frequently asked questions
What types of HVAC systems does High Efficiency Cooling & Heating Inc. service and install?
They service and install various HVAC systems including air conditioners, furnaces, heat pumps, humidifiers, smart thermostats, and PTAC units.
How does the company handle scheduling and technician arrival times?
The company is noted for prompt scheduling and technicians arriving on time, often providing advance notifications or reminders before appointments.
What can customers expect during a service or repair visit?
Technicians perform thorough diagnostics, clearly explain issues and solutions, work efficiently and professionally, and maintain respectful communication while keeping the work area clean.