Mannix Heating & Cooling - Gaithersburg

Joshua Malkin 

on Google

a month ago

I have used Mannix for almost 8 years on recommendation from the previous owner of my home. They are always responsive, provide reasonable prices and great services. I especially appreciate their quick response when my air conditioning unexpectedly failed one evening. They quickly diagnosed the issue and had my system operational within an hour after arrival. Thank you! 

Bill Tennis 

on Google

4 weeks ago

Mannix has been very reliable and easy to work with. Recently KP and Emanuel performed a service on our home. They showed up on time, worked efficiently, and completed a minor repair. They were polite and worked independently. I would use them again. 

Eleni Pallas 

on Google

a month ago

We appreciate KP! He’s patient when asked to explain things twice, polite, takes pics for our review and helps us in any ways he can. We love having him do our checks each season to develop a relationship and feel secure he’s keeping tabs on things over time. It’s great collaborating with earnest people who love helping others. 🌞 

Laura Lucs 

on Google

a month ago

We have been using Mannix for our annual HVAC maintenance for several years. KP was on time, very friendly, and thorough in the inspection of our unit. Highly recommend the MD office. 

Steve Michaels 

on Google

4 months ago

Mannix heating did an excellent job from the same day visit to estimate a furnace replacement to the installation technician who did an excellent job installing both the furnace and a steam humidifier. I used them for my other furnace 3 years ago and that was also a great experience. I had other estimates and they were the most competitive too. You won’t go wrong with this company.