This is a sampling of online reviews and emails for Isaac Telles. Some of these are from his earlier company Speedy’s AC, based in Phoenix, Arizona. He is now in Denver and has reconfigured as N&B Heating and Cooling. You can find more reviews of Isaac’s work on Yelp and Facebook accounts related to this earlier company.


“We use Isaac for any AC/Heater issues we have and have always been extremely impressed. Isaac is very professional, dependable, and very friendly. We really appreciated the time he took to explain any issues he found and different solutions.

— MaTT, Phoenix


Thank you, Isaac for yet another successful install!  Your attention to detail is appreciated, as is your care for my home.  More than anything though, I am grateful for your guidance and suggestions as to which AC unit to buy.  

You are incredibly timely and ALWAYS there for me.  I don't know how you squeeze so much work into a single day.  

To Isaac's potential customers, I recommend his firm with neither hesitation nor reservation.  He is reliable, honest, professional, and knowledgeable.  He'll take very good care of all your HVAC needs.

Thanks again, Isaac!

— Patrick Shaughnessy


I will always use this company for my AC issues..I called this morning and spoke to Isaac. He was extremely friendly and offered to come pretty much right away. Before using this company, I've had multiple people come out to service my AC unit and they all seemed like they weren't totally sure what the issue was and would replace a part to get us by. It always ended up breaking again a month or two later. Today, Isaac actually listened to me, found the issue and replaced a part that makes sense. Our AC was back on 15 min after he showed up.. it's working better than before and his price was very reasonable. 

I am normally very nervous to use a company like this without a family or friend referral but since we needed our AC fixed fast, I just took the risk. I'm glad I did!!

— Katie D.