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    Services - Modern HVAC

    HVAC installation or replacement

    HVAC system repair

    HVAC system maintenance

    2 More Services

    Water heater installation

    Water heater repair

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    Harold Heating and Cooling

    Harold Heating and Cooling

    (2 reviews)

    I've been a customer for 32 years in two different homes and have always been impressed by the…read moretimely, professional help I've received. Today's technician - Brittany - was on time, thorough, patient while explaining the installation report and helpful at giving me some tips with the thermostat. All in all, a great experience!

    ******* READ IN FULL - DO NOT USE THIS COMPANY ********** As…read morewe head into the new year, I am writing this review to warn potential customers that Harolds Heating is NOT the same company it used to be. While the 4.8-star rating reflects the honest legacy of the original owner (Mike Sr.), my recent experience under the new ownership of Mike Harold Jr. has been a nightmare of unprofessionalism and unresolved issues. I unfortunately hired them for two separate projects, and both were mishandled: Durham Project, HVAC Repair: Contacted them to do a service call regarding an HVAC install they did a couple years ago. Several times throughout the 2 years, we were left without heat for weeks and waited months for a part they said was the issue. Part was finally installed earlier this year and the system still isn't working properly Toronto Project, New 35k HVAC Install: Trusting them was a mistake. Figured since I knew them it would be a good idea to give them another chance, so I hired them for a full HVAC system at a new site. Within two months, fixtures were leaking and they promised to fixed them and instead walked away and declined to resolve the problem. The service model now seems to rely on sending inexperienced technicians who create more problems, followed by other technicians to fix those mistakes, wasting everyone's time. When I escalated these issues, Mike Jr. initially claimed to take ownership, but ultimately abandoned the job and emailed me to "call someone else" while still expecting payment for unfinished, faulty work. It appears the new management is focused solely on collecting money rather than protecting their reputation or finishing the job. Be very very careful with this organization; the quality has dropped significantly and there is constant turnover. If you make the mistake of hiring them make sure to have your system reviewed by another 3rd party since most of us as owners, consumers, project managers etc are not experts and would not notice the deficiencies. Note - Brian's post on Sept 25th is accurate. "Todays technician" He was lucky to get Brittany who is great. The other experienced tech is Pat who came out to our Toronto site. If you dont get them - Roll the dice if you like to gamble!

    Modern HVAC - hvac - Updated May 2026

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