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BUSINESS REVIEWS

High Efficiency Cooling & Heating Inc.

570 Alden Rd. Unit 3, Markham, ON, L3R8N5, Canada

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About 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 1–50 of 1,648 published reviews.

Google

My A/C system did not work and the diagnosis indicated that the thermometer broke. However, during the installation of the new thermometer, the technician checked out that the original cause was the wiring and so additional part was required. With the new part, the technician completed the re-installation of the new thermometer and he carefully checked to make sure that both the A/C and furnace are working before the completion of the service. The technician was very patient and skillful.

Bill IpAug 25, 2026
Google

High Efficiency Cooling & Heating cimpany was very prompt in responding to my request for inspection and service of our HVAC system and gas water heater. The technician Harry was very helpful and efficient in performing the work. He explained to me in details what he believed was causing the problem with our water heater and recommended the proper setting of the controller to optimize the heater.

koko kyiAug 22, 2026
Google

Technician Harry at High Efficiency Cooling & Heating Inc. perfectly fine tuned the heat pump and furnace to work optimally in the summer and in advance of winter weather. I greatly appreciate his professionalism and knowledge as the new ideal settings will ensure best performance with maximum savings. Aris, the receptionist, is super kind and helpful in scheduling seasonal maintenance. I highly recommend High Efficiency Cooling & Heating!

Otino CorsanoJul 12, 2026
Google

Harry explained in detail why my air conditioner failed . He is extremely kind and courteous . The problem is now solved . Thank you Harry . Great job ! 👍

Clement WongJul 02, 2026
Google

Bharat GoyalJun 29, 2026
Google

I’m so impressed with the level of care and expertise Harry (technician) brought to the job. I requested for an AC yearly maintenance. He answered all my questions patiently, and made sure everything was working perfectly before leaving. It’s rare to find someone who combines skill with genuine customer care. Truly exceptional work. Also, I have been with High Efficiency for 5+ years, exception services all the time.

Nancy TanJun 14, 2026
Google

tony wooJun 03, 2026
Google

Service is great

??Jun 02, 2026
Google

RANA is very courteous, professional, and helpful

sat persaudJun 01, 2026
Google

The technician was very good at his job today and was very helpful with our questions regarding the air conditioning setting for our home well explained to me and my husband excellent service

Akhleema BabwahMay 28, 2026
Google

Excellent! Very knowledgeable, and quick service. He was able to resolve an issue that was going on for a while. Highly recommend!

Eugene ParkMay 28, 2026
Google

Excellent service! The technician is very professional and super helpful. He patiently answered my questions and explained to me the best solution to my HVAC issues. The inspection fee is also reasonable.

Jovial SiMay 26, 2026
Google

The technicians were really terrific and Hi Efficiency should be very proud of them. Allan

Allan FMay 21, 2026
Google

Harry and his colleague were excellent, as always. They were friendly, hardworking, and very professional. Harry took the time to explain what they were seeing, showed me the capacitors, and walked me through what could be addressed without ever making me feel pressured or oversold. He was knowledgeable about the replacement costs and gave helpful, honest opinions when asked. They cleaned and serviced our central HVAC system, were flexible enough to add on some additional work that had not been scheduled, and also cleaned the filters on our ductless system. Everything is working great. Really appreciate the reliable service and would highly recommend this team.

Adrian WuMay 12, 2026
Google

Always a great experience! Prompt service with a knowledgeable and pleasant service technician.

Barb OehlMay 05, 2026
Google

We have been with High Efficiency for over 10 years. The team is highly experienced and professional. We want to give a special thank you to Harry, the technician. He is amazing! He is very thorough, knowledgeable, and trustworthy.

FrancaApr 27, 2026
Google

Early Sunday morning, I heard a beeping sound in the basement. It was our Rinnai tankless water heater displacing number 17 on the control panel. We don’t have hot water.Called High efficiency cooling and heating company, the same company that does maintenance for our furnace and AC. Rick called to schedule a technician for Monday. The company provided a very professional technician name Harry. He explained in detailed what was the problem and worked on it right away. Great experience makes it very appealing to continue being a customer of High efficiency heating and cooling. Thank you so much for the great job Harry.

George GonzalezMar 30, 2026
Google

Very good service call for a problem with my heat pump. Problem solved with a good explanation from Harry about the problem plus a few good recommendations as well for more efficient use of my heat pump.

Randy StroudMar 17, 2026
Google

Rana and Quinton provided excellent customer service. They were professional and courteous. Highly recommend High Efficiency Cooling and Heating.

PjmMar 10, 2026
Google

Sam was incredibly helpful. Friendly guy and fixed My AC in 15 minutes. Strongly recommend!

Kent yanMar 03, 2026
Google

Harrison DongFeb 10, 2026
Google

Gharish SanthakumaranFeb 09, 2026
Google

Simon ChanFeb 04, 2026
Google

very good experience - quick appointment. sam was very knowledgeable about the system. diagnosed and resolved the potential issues quickly.

Ashish NairJan 31, 2026
Google

Harry did a great job in explaining and resolving the issue. Thank you!

Arthur WangJan 30, 2026
Google

Paul LaiJan 30, 2026
Google

We decided to go with High Efficiency because of their competitive price and flexibility. Were so happy we did because Charton and his crew were super easy to work with and all went above and beyond to make the process seamless! 10/10 would recommend this business to our family and friends

ShellyJan 29, 2026
Google

Excellent communication both from the office upon making the appointment and from the technician on route. Very efficient, courteous and respectful technician. We highly recommend this company.

Debbie BellJan 29, 2026
Google

Really good service! Tech is super nice!

jeff huangJan 27, 2026
Google

Gerin was prompt, very thorough in his investigation, explained his findings well and followed through to provide options after speaking with his office. Highly satisfied.

margie woodgateJan 22, 2026
Google

Overall communicative with fast and effective responses and installation was arranged following day. Great customer service with respect to set up, installation and trouble shooting. One star down for style points as last minute it was determined that I needed a new thermostat and it ended up leaving some empty space on my wall.

Shabnam HamidiJan 21, 2026
Google

Maintenance was ontime and very efficient. staff is friendly

Yiqi WangJan 20, 2026
Google

Very polite and professional

Ron CJan 19, 2026
Google

Installed two heat pumps using the company, during the installation at my home the technicians replace my old black drainage tube with clear ones as my old AC was leaking water. They are happy to answer my questions about dampers and over/under sizing of heat pump. They also added an Eco bee with each heat pump and set it up for me. Fast response and excellent service even in the peak AC season. I personally referred this company to my neighbors and in-laws after my experience. I will be using this company for all HVAC related service from now on.

Biao DuJan 14, 2026
Google

As before, we are thankful to their service. Great job, Marco and Harry. Responsive, on time, professional, staffs have sense of emergency. Will call them for any future issues.Thanks to Harry, a true professional.

Alex ChanJan 08, 2026
Google

Sam was great!

Tom McKinlayJan 07, 2026
Google

Tom McKinlayJan 05, 2026
Google

Great service.

Marg DDec 23, 2025
Google

Our furnace was installed properly and timely manner. Specifically Mr. Farid took care to make sure everything is working properly. Thanks.

Jiten ShahDec 23, 2025
Google

Jay was very efficient, friendly and knowledgeable. He was quick with the installation and made for it to be a fun, but professional time. Highly recommend! Very impressed!

Ryan HofmanDec 22, 2025
Google

Rana of High Efficiency came in to check and tune up my furnace. He was very professional and efficient. He addressed all our problems and issues. I would highly recommend the services of high efficiency.

Thomas YanDec 20, 2025
Google

Marg DDec 17, 2025
Google

Technician arrived on time. He was courteous and communicative, explained everything he was doing, and finished the job quickly. I will continue to use this company for HVAC maintenance and repair.

Randy PatchDec 16, 2025
Google

Preventhar SelvarajDec 12, 2025
Google

Thank you for fixing the heating system!

laura liuDec 10, 2025
Google

Girin came to do the installation. He was knowledgeable and polite. Highly recommend.

Lucy SteinDec 08, 2025
Google

The technicians helped us resolved our problem. Harry was professional, friendly, and knowledgeable. He explained what potential issues were and what the fixes would be. Setting up an appointment through Marco was very quick and easy

Nhat Minh TranDec 05, 2025
Google

Very good service. He explained everything and provided advice on our 15 year old water heater.

Dinesh VirmaniDec 05, 2025
Google

Sam works great. Very professional and friendly. Give us a good solution and cost effective

Zhenjun LiDec 04, 2025
Google

JingyaoDec 03, 2025

Additional Google reviews

These stored four- and five-star Google reviews supplement the request history above. They may overlap with that history and are not added to its total.

Google

Thank you. Gilbert quickly replied and arranged. Rana technician is very professional and explained very details. I am highly recommend them.

Peter TsuiJan 23, 2024Google
Google

Xinyi DongJan 23, 2024Google
Google

We needed some technical help with re-setting our EcoBee thermostat for the heat pump/furnace activities and left a message with their service manager. We got a text reply very quickly and after giving some details about our issue, they had a technician come by our home about 3 hours later who fixed the problem. We are very pleased with their attention to their customers' needs and can would recommend High Efficiency anytime to our friends and family members.

Hans MungerJan 19, 2024Google
Google

I bought my furnace from High Efficiency many years ago because they were close by and had a good reputation. My furnace quit on a cold day in January 2024. Harry arrived in a timely manner, was friendly, informative, considerate, knowledgeable, reasonably priced, just a great experience, could not be better. I highly recommend High Efficiency Cooling & Heating.

Harold BrillingerJan 18, 2024Google
Google

Very happy and pleased with not only the response time and quality work done by High Efficiency but also when the work was done. It was two days before Christmas and a busy time of the year for HVAC companies…yet High Efficiency made us a priority and followed through with a solid response time. High recommend this company to anyone searching for work done in this field.

Gary DiSarcinaJan 16, 2024Google

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.