Mannix Heating and Cooling- Gaithersburg

I have been a delighted Mannix customer for years. They are expert, knowledgeable, prompt and neat. Today, Silvio the Mannix technician quickly resolved a heating and ventilation problem and changed a water filter that’s always a challenge to fix. I’ve never had a service issue that a Mannix tech couldn’t repair. Their prices are fair and their annual maintenance program ensures my HVAC system works perfectly. I recommend Mannix wholeheartedly.

Erick Aviles of Mannix went the extra mile to get my heater working during this frigid cold weather. He fit me into the schedule and we are so grateful. I highly recommend Mannix. They installed both my heater and AC and we always join their service program to ensure our system is working properly and you get a discount on unexpected repairs. Thanks so much!!

Mannix service technicians are always excellent. I have been buying twice/year service package and it’s very good deal and never been disappointed. Today Mr. Rember Bonilla checked our two heat pumps throughly. He is very knowledgeable and showed us why our electric bills last winter were sky high and how to fix it. He was friendly and communicate very well. He is great!

Mannix’s Keith Hellin has been servicing our HVAC system for several years. He always gets the job done extremely well. Yesterday he went above and beyond, dealing with ice and snow and extreme temperatures to get our system up and running. Highly recommend!

We’ve been using Mannix for our HVAC maintenance needs for well over a decade and today’s experience confirmed our decision. The technician, Silvio, was prompt, professional, professional, knowledgeable, and courteous. He exceeded expectations and explain in detail how our system worked and our maintenance needs. We will definitely be using Mannix again in the spring.