BUSINESS REVIEWS

High Efficiency Cooling & Heating Inc.

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

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 101–150 of 1,648 published reviews.

Google

Fast service. Thank you Girin and hoping that the work be done as soon as possible.

Google

The technician was quick and friendly. Thanks again :)

Google

The service I received was exceptional. Lovely, honest and informative visit for maintenance on our heat pump. Thank you!

Google

High Efficiency Cooling & Heating Inc. installed a new Generalaire humidifier which includes a water saver. The technician patiently answered all of our questions. Hopefully, our water bill goes down and no more dry nose during the winter.

Google

Harry was very professional and provided practical advice. He did a thorough diagnosis of our HVAC and AC to identify potential causes of an air quality issue, and we’re very happy with the service. Highly recommend this company for any heating & cooling needs!

Google

Jason showed up on time, was courteous, respectful and amazing. He diagnosed the leak as a poor drainage connection, and didnt charge us. Perhaps it was a loose connection from previous work....not sure, but am happy there was no charge.

Google

Liam was very professional and thorough. Did a great job on my furnace tuneup and I hope I get him again next year

Google

Good customer service. Technician is very helpful and provided good advices.

Google

The technician is very patient, highly professional, and truly trustworthy.

Google

Girin the technician did a great job servicing my furnace and Central AC . Would highly recommend !

Google

My technician Pirabaharan arrived on time, polite and courteous, professional and knowledgeable. Answers all my questions and make recommendations that meets and exceed my expectations. Highly satisfied with his service and works, would recommend him and this company to anyone. Jimmy

Google

Giran from High efficiency cooling inc, explained the problem well and the resolution needed and it was quick though.

Google

Im very happy with the service I received on two occasions. Everything from the scheduling through to performing the service was excellent. The initial technician who came to diagnose and fix the issue was very knowledgeable and efficient. Then the two gentlemen who came to do a full cleaning of my unit were very thorough and overly polite. I couldnt have asked for better. You have a great team! Please pass along my thanks.

Google

Service was on time and courteous.

Google

Been with this company since last year and couldn't be happier. They know what they're doing, charge fair competitive prices. It's so much better to go with them than general contractors or other means to try to save a few hundred dollars. You get what you pay for. I replaced my AC with them a year ago, serviced it at no cost since I have the diagnostics for life package. They also fixed several mistakes from the previous home owner and a contractor I hired to install the smart thermostat. The furnace and AC would randomly fail at times and I had no idea why. Now I know and everything is working perfectly. Genuine service. Genuine company.

Google

On time, quick and friendly service.

Google

Sam is very polite and did a good job of getting our boiler running again. Marco at the office was also good to deal with.

Google

Fast and great service!

Google

Excellent service. Excellent communication. The process was smooth. Both AC units were installed and tested and explained. They both work great without issue. The men who came were kind and respectful and professional. Everything was left clean. I’m grateful for the experience they provided. Would highly recommend.

Google

Warmest thanks to Liam for his works to resolve the problem of my 10 years old A/C. He thoroughly carried out diagnosis after conversation to me about when the problem occurred and symptoms. Promptly identified where the loosen electric wire should be connected to, hence resolved the problem without any new parts. Meanwhile, he also patiently answered all my questions. He is really a nice and honest guy, and highly competent technician with good knowledge to the product and repair technique. The team of High Efficiency Cooling & Heating kept me well informed about the process since I placed the repair service order. Price is fair, service is excellent, and company is reliable and trustfulness 👍🏻👍🏻

Google

Knowledgeable and hardworking .Found the solution pretty quickly

Google

This company knows all about PTAC units. Omg they've helped out many of us condo owners manage and fix these antiquated heating systems. I am very grateful. If you have an old heating system in the Dundas st area and its not functioning well, I would def hire this company.

Google

My wife and I have been in our current home for 38 years and have experienced three different HVAC companies. We have now found that our 3rd company namely High Efficiency Cooling % Heating Inc. to be our preferred company. Charton from sales returned our many phone calls with clear answers before our purchase of a dual furnace-heat pump system. Liu and his assistant did an excellent installation. Richard the technician has taken a systematic elimination approach to find the cause of a heat pump problem. Most importantly the technician Richard took the time to listen to our heat pump drainage concerns and came up with a perfect solution that demonstrated the great flexibility of our smart thermostat and great flexibility of our heat pump that when needed it can function solely as an ac thereby eliminating our drainage concerns. Thank you to the whole team and especially to the technician Richard for clearly explaining the multiple advantages of a dual furnace-heat pump system and smart thermostat and suggesting what we thought was a perfect mechanical solution to our heat pump drainage concerns! On August 14, 2025, technician Girin from High Efficiency and Cooling Inc. came to replace the collector's box in our Carrier furnace. The need for a replacement was first diagnosed by technician Rana, Marco ordered the new part and Girin did an excellent job in replacing the old collector's box. Girin was very professional, performed excellent work, explained everything very clearly, doubled-checked to make sure everything was in excellent order, and answered all our questions about the Eco smart thermostat. Many thanks to Girin and the whole High Efficiency team for their excellent teamwork! We thoroughly are appreciative of High Efficiency's Annual Service membership program and their Residential Lifetime Free Diagnosis Membership Program. These 'worry-free' programs provide us with safety, security and efficient service!

Google

Very good experience and get the job done very efficiently.

Google

Technician was on-time, friendly, competent, clear and straightforward. Highly recommend

Google

The technician who came to service our furnace was very efficient and knowledgeable about the work. He provided very useful ideas about how a home owner can understand the best operation of the equipment. One idea that the technician gave me was to shut off the A/C system when the outside fan stops, to avoid further damage.

Google

Sam and Giran were great! They were prompt, polite and efficient. I would recommend them to anyone!

Google

AI customer service works amazing for my first phone call, the technician is super professional and knowledgable. He quickly diagnosed the issue and provided the good reccommendation.

Google

My 18 years old AC broken down and I décider to give High Efficiency Cooling & Heating Inc. a call, as they were the one that installed the system. To my surprise, the company quickly sent they Tech to have a diagnostic. The price is reasonable. Girin, the tech was very knowledgeable and friendly. He explained all the issues and was quickly resolve the issues, without upselling a new AC unit. I highly recommended this company. I will definitely use this company for future maintenance and repair.

Google

Had a great experience with High Efficiency Cooling & Heating Inc.! From start to finish, the entire team—from sales to the technicians—was professional, knowledgeable, and efficient. They provided honest advice on what would work best for my home, installed the new AC, and fixed the issues with my air handler quickly and smoothly. Everything was done on time and with great attention to detail. Highly recommend them for anyone looking for reliable and high-quality HVAC service!

Google

Great work and super friendly! Had it fixed in no time!

Google

Big thanks to Liam and Girin for getting our AC back up and running! They were punctual, professional, and efficient. They replaced the part, tested the system thoroughly, and made sure every was working before wrapping up. Highly recommend their service!

Google

Great service — they did a good job and were very professional. Thank you!

Google

Amazing service. Good technicians. Friendly guy. You tell them the day and they are there! Trust

Google

Great customer service.

Google

Rana was very knowledgeable and helpful. I learned a lot about my Heat Pump today. He was very patient and methodical and checked all systems before leaving. I would recommend his service to anyone. Today I had Sam service my Heat Pump. He was very knowledgeable and personable. I would definitely recommend both Sam and High Efficiency for their prompt and professional service.

Google

I needed condensation tubes moved and Sam at High Efficiency was amazing: super nice, came up with a creative solution and solved my problem.

Google

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.