DeMark Home Ontario

In DeMark Home Ontario's own words

ONTARIO’S LEADING HVAC CONTRACTOR DeMark Home Ontario Inc is HRAI certified, customer focused company that provides high quality HVAC products and services to residential customers in Ontario. We are locally owned and operated company who strives to provide customers with the best furnace, boilers, air conditioning, hot water heater, tankless, heat pump. We offer the highest quality products for rent to own, finance or purchase at the most competitive prices. DeMark Home Ontario servicing area for HVAC-furnaces, air conditioners, heat pumps, hot water heaters, tankless units includes: Toronto, Richmond Hill, Brampton, Mississauga, Milton, Hamilton, Scarborough, Ajax, Pickering, Oshawa, Vaughan, Markham, Newmarket, Barrie, Ottawa and more.

Trade

HVAC contractor

Business address

Toronto, ON

Telephone

(647) 847-2998

Website

dhontario.com

Hours

• MondayOpen 24 Hours
• TuesdayOpen 24 Hours
• WednesdayOpen 24 Hours
• ThursdayOpen 24 Hours
• FridayOpen 24 Hours
• SaturdayOpen 24 Hours
• SundayOpen 24 Hours

From the business's Google listing, checked Oct 2026

Register

ON register

Recorded as supplied and as found in public sources. This register makes no credential or quality claim about any business; check license status with the provincial licensing body.

Google Reviews

4.9 ★★★★★ (304)

• Greatest job

  Tommy N.★★★★★

• My water heater was out of order for a few days. I was happy to find Demark Home Ontario online and they did replacement job of broken heater less than 24 Hrs with great quality from office ( thanks to Mike ) up to installers. Old heater has been removed, place cleaned properly too. Nice job!

  Leonid O.★★★★★

• We needed a replacement for our power vent gas water heater and Mike of DeMark Home provided a very good quote for a Bradford White model after submitting photos of our old tank setup. The installation was done the next day by Reza and his assistant who arrived on time and did a fine job in an hour's time (though we were booked for a few hours). Everyone was courteous and professional and communication with Mike was excellent at all times.

  N H.★★★★★

• I had a great experience getting Rinnai tankless water heater from DeMark Home. Sales manager was very professional, explained all the options, walked through warranty details, and arranged swift installation. Installers came on time and replaced my old unit in just 2 hours. Definitely would recommended.

  vlad R.★★★★★

• Fast response, planning and quote, professional install and service, excellent price.

  Jurgen G.★★★★★

• The service was professional and Mike and the team went above and beyond. I forgot to let them know that the old water heater was a reliance rental needed to be returned. Reliance has so many rules just to get money out of you. They were able to retrieve the old one and send it back to reliance per their instructions. Such a relief to work with such competent people that really go above and beyond.

  brand S.★★★★★

• I recently had DeMark Home Ontario install a tankless water heater. The overall experience was great. Mike was very helpful answering all the questions and concerns on the phone. The installers did a great job with the installation.

  Tom★★★★★

• Excellent service from start to finish! Mike arranged the water heater installation the same day, and everything was handled quickly and professionally. Great communication, reliable service, and a job well done. Highly recommended!

  Darth V.★★★★★

• Demark Home is reliable and highly professional. They guide you honestly and professionally with the appropriate equipment for your heating and cooling requirements to suit your home.

  Lance F.★★★★★

• Very happy with my experience with DeMark Home Ontario! I spoke with them in the morning about replacing our water heater, and they took the time to go over all the details and answer my questions. Everything was confirmed quickly, and by the afternoon our new Bradford White water heater was already installed. The whole process was smooth, professional and surprisingly fast, from the first conversation to the completed installation. Great communication, great service, and no unnecessary hassle. It’s not often you can make a call in the morning and have everything taken care of the same day. 😊 I would definitely recommend DeMark Home Ontario!

  Elena C.★★★★★

• I was elated to learn that DeMark Home Ontario serviced the Niagara region. I had my furnace and a/c replaced. Mike answered all questions I had. The technicians were professional, courteous and cleaned up everything. The price could not be beat there were no hidden fees and no long wait times. I would highly recommend DeMark Home Ontario.

  Emma D.★★★★★

• Great service, on time, best price right away

  Paola D.★★★★★

• Thank you guys for your quick response and professional installation. Very clean job.

  Lev Y.★★★★★

• Contacted DeMark Home about my failing old tankless water heater and within 2 days had a brand new one installed at a competitive price. Mike was quick to answer my inquiry and answered all my questions and explained their services well. His crew was on time, friendly and efficient. They had a bit of a challenge with my small cottage and tight work space but made everything work perfectly and cleaned everything up afterwards. Highly recommended and will definitely reach out to them in the future for other services

  Lawrie S.★★★★★

• I contacted DeMark Home Ontario for hot water tank removal and installation of new one. Mike contacted me within minutes and we sealed a deal in short order. The work was done the next day. The workers were professional, (covering floor to prevent scuffs and dirt) polite, and easy to deal with. They took little time to get old tank out and new one in (including installation of new valve). Top notch service/work.

  S D.★★★★★

• DeMark installed a modern water heater replacing my leaking 17-year-old one. Coordinated by Mike Garine, performed by Ehsan and partner, did a fine job, professional and courteous, from start to finish.

  Johnny C.★★★★★

• We are so grateful to Mike, Anna and the tech team at DeMark Home Ontario. We were stuck in a horrible repair situation with our rented tankless water heater provider, and Mike provided us with great advice, a great price on a top Rinnai system and total flexibility as we worked through parting ways with our rental company. His team was able to come within a day of us finally booking the install and had the job complete in an hour, with advice for future maintenance. We would highly recommend DeMark Home Ontario as a trusted, no BS partner for your home HVAC and water tank needs!

  Melanie B.★★★★★

• I had to replace my rented water heater and I opted to buy it this time. After sending pictures, Mike responded quickly with a quote and detailed explanation of the process. On the day of installation, he called to confirm the technician’s name and confirmed the drop off of my old unit. After the installation, he followed up. This type of professionalism is hard to find these days and I sincerely appreciated the straightforward approach. The technician Ehsan was amazing as well, kept everything safe and tidy. I highly recommend DeMarkHome, Mike and Ehsan. Now I have someone reliable to call in case of need.

  Ela★★★★★

• I’d like to say thank to Mike and his team on their amazing job. I just requested a quote for the tankless water heater in the morning and the installation was done same day. Verry satisfied with new machine. Best service ever

  Hieu N.★★★★★

• Mike was extremely patient with me as I considered my options for a combi boiler. He explained things in a way I could understand. Ehsan and his co-worker were professional, competent, hardworking and respectful. They went above and beyond to make sure my in-floor heating was working and took the old tank away. I’ve only had the system for a day but so far so good.

  Caroline M.★★★★★

• I recently had my air conditioner replaced and was extremely pleased with the service that DeMark Home Ontario provided. The team was fast, efficient, and professional from start to finish. Their pricing was excellent, and the quality of their work exceeded my expectations. They were very thorough, paid close attention to detail, and made sure everything was completed properly. They also kept the work area clean and tidy throughout the installation and left everything spotless when they were finished. I highly recommend this company to anyone looking for reliable, professional, and reasonably priced air conditioning service.

  Jane L.★★★★★

• Exceptional and Fast Service! ​I had a fantastic experience with DeMark Home Ontario for my hot water tank purchase and installation. The entire process was incredibly fast and seamless. From the initial inquiry to the final setup, their team was professional, knowledgeable, and efficient. The installation was completed perfectly, and everything is working wonderfully. If you want a hassle-free experience and top-tier service at reasonable price, I highly recommend them!

  Don L.★★★★★

• UPDATE INCOMING ! PLEASE STANDBY UPDATE WILL BE ABOVE THIS LINE THIS REVIEW WAS PREMATURE BEFORE COMPLETE INSTALLATION. I will be back ------------------ Had to come back to edit their name, i incorrectly wrote demarc. Got a/c & furnace from these fine exceptional, super classy, clean, polite folks because i had a flawless experience with them years ago with a tankless water heater, never an issue at all ! Mike the main point of contact that handles everything and everyone makes the whole process effortless, easy and simple ! I am still amazed. His entire team from start to finish and they are super fast ! There is alot of work involved but they do it all. No nickle and diming either ! No need to haggle or nothing, no head games. No feeling like being cheated. Just easy, honest to goodness quality, service, respect, everything. I have no affiliation whatsoever. I am just puzzled and extremely satisfied especially when life has its ups and downs, mine has had more than my fair share of downs and i expect problems but when one needs help as complicated as hvac especially in ones own sacred personal, private home and one is blessed to find these professionals at Demark and Mike and their entire team, no words i can use can explain what true blessings our dealings with Demark have been and i hope anyone looking as we were has the true luck finding these fellows as we did because in my life travels finding great or good help yet alone flawless is like finding a needle in a haystack. You cant be dissappointed employing this team, we werent and i would bet nobody will. I just simply call them one time and any questions i have are answered quickly, no ifs ands nor buts! In hindsight i really dont even need ask, they know exactly what i need better than i do. That is how simple they make it. We got rental systems, everything so simple, no need to stress about anything. Even in our unfinished old dusty basement they take care to place mats not to make mess. Wish all of life was so easy, smh, when fast food restaurants make simple mistakes making a basic hamburger i expect somethings such as furnace or central air conditioning or tankless water heater to have hiccups, delays, whatever as there is so much involved, plumbing, electrical, ductwork, whatever, nope. All invisible to us in our home, we simply sit back and enjoy. Our home is in East York Toronto. Call them hopefully they work your area, they appear to be quite a large outfit. Compliments to all their staff, im not good with names but we are super happy.

  Ole G.★★★★★

• I requested 6 quotes to replace the furnace and ac at my daughter's home in ottawa, including a quote from DeMark Home Ontario, based out of Toronto. I was concerned about receiving a long distance quote, but Mike walked me through the entire process, which was very reassuring. Their quote was significantly less than the next closest bid and, fortunately, we decided to take a chance and move forward with the company. Mike phoned me to advise a time and date for installation, and the installer phoned the morning of the installation to reconfirm the time. The entire installation went off like clockwork. Very professional and tested the entire system once installation was complete. We were very satisfied with the entire process and would highly recommend Mike's team for any of your HVAC needs. Gary M. Ottawa

  jh M.★★★★★

• Great, fast and friendly service with top quality equipment and prices

  Alex W.★★★★★

• I asked for estimates from 3 different companies for Furnace and AC combos with install and DeMark Home was one of them. It was refreshing dealing with Mike who has a no-nonsense, no BS approach who didn't waste my time with a song and dance designed to upsell or get more from me. Got a 2 stage furnace and AC from Lennox for $ 2500 less than the next estimate for inferior equipment (1 stage furnace) and the installers were competent and professional. I recommend this company confident that you'll be happy with their quality and prices.

  Henry C.★★★★★

• We used this company to upgrade our old air conditioner to a new one, Amana Air conditioner. Their prices were very reasonable compared to competitors. The technicians were very friendly and left my house tidy and clean after the install. Thank you!

  Alessio S.★★★★★

• Fast service. Communicative. Technicians were top notch.

  Natasha O.★★★★★

• I had a great experience with DeMark Home. They installed a Combi Boiler for me and did a great job. They cleaned up after and left the work site looking better than they left. I spoke with Mike to set everything up and it was nice to speak with a human directly and he was extremely thorough and quick to get back to me with all the details. I highly recommend them!

  Chad C.★★★★★

• Mike was super helpful and communicative, answering all of my questions quickly to clear my uncertainties. Very appreciative of his help.

  Justin P.★★★★★

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