I chose Gandy to replace my storage tank with a tankless water heater. They were not the cheapest, but Rob was the most knowledgeable and realistic among the bids I got. It also helps that they're well reviewed online.

The only legwork I had to do was schedule Fortis to come upgrade the gas meter during the same time that Gandy would be on site. Both Fortis and Gandy were on time, and the installation went well. It took about as long as they said it would (6-8 hours). There was no hours-long water shutoff either - the house had cold water for virtually the entire time which is nice since you can still flush toilets, wash your hands, etc. That's nice because my wife and I worked from home during this time.

The work area was clean when they left. Perhaps even cleaner than when they arrived..

Their quote included parts and labor, and there turned out to be unexpected expenses which they did not charge extra for:
- they replaced an defective gas regulator
- the gas line for the furnace had to be re-routed to accommodate the tankless water heater

Their invoice included all the right information for me to claim the $1000 rebate from Fortis.

Good job Gandy!

Gandy service technician (Braden) was courteous, helpful and very knowledgeable. Our furnace servicing required an unusual part, and Braden was busy networking to find it for us. He drove an hour round trip to pick up the part so that our servicing could be finished in one day, rather than having us reschedule another appointment. Much appreciated. Great service above and beyond.

We had a wonderful service tech ! Brhoderic was polite , efficient, friendly and highly skilled. He answered any questions I had and did a thorough job servicing our heating/cooling system. He arrived on time and completed the task efficiently while paying attention to every detail.
Thank you very much !!

Isaiah arrived within the time window and was very professional. He answered all my questions and I felt that he did a very thorough job. I have been using Gandy for years and would highly recommend their services.

I had bad luck with my brand new tankless gas water heater. It keeps sending error messages and needs to be reset again and again. Sometimes I had to reset three times for my kids to take a shower. Anyway, the previous technician came in and removed everything, but he said it might take quite a few days to replace the machine. Taking into consideration that I can't live without hot water, especially when you have kids at school who has PE almost everyday, he recommended me to contact Gandy. I called them this Tuesday, but I was told that the service had been fully booked until November. After explaining my struggling situation, Matt(I hope I didn't spell his name wrong) arranged for a technician coming on the same day for consulting and another technician coming Wednesday morning for installation. So I ended up by only one night without hot water. It's greatly appreciated that Gandy responded so quickly and all of their technicians are very friendly. Thank you so much, Gandy! I would definitely recommend this company.
Thanks again.

The service technician Ben D. of Gandy Installations did a fine job of the recent servicing of our furnace. We have used Gandy Installations for many years and have been quite satisfied with their work. This was the first time Ben D. was here but he was very polite, considerate of our home, efficient and answered all our questions.

Ben D. did an excellent job on service my heat pump, furnace and Navien water heater. He did thorough cleaning and diagnosis each component and said everything was in excellent condition. Ben gave lots of interesting information about my systems, made some recommendations and offered to update the electronic thermostat. Ben is very professional and a pleasant guy too. Well done by Ben and the Gandy office staff. Looking forward for another year of great service from the heating/cooling system. It has been flawless operation and well worth the investment in 2014. I have the Platinum plan with Gandy. Thanks.

Jason K did an excellent job of the installation.
He was on time and efficient.
Jason was very knowledgeable and knew how to figure out a few things that weren't easy to figure out.
He was very friendly.
He was very professional. He cleaned everything up before leaving and was very pleasant.

Gandy gave us excellent service. Their quote was exactly what we paid.
The sales rep, Johnathan, was excellent . Great company.

Cody and Jack showed up on time and ready to go. Very friendly and efficient. At one point there were 5 or 6 guys working like a well oiled machine around the house. Super clean and the work looked flawless. Great job!! Don't go anywhere else.

Great service,fund them to be very professional what they do.
Technician Cameron was very friendly. Very happy with the service
they provided.
Highly recommended and we will use them again in the future.
Thank you.
Ben.