Maryland Residential

Heating and Cooling

Repair / Service / Installation

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Blue Dot has been serving Maryland
for almost 50 years

For Heating and Cooling Repair, Service, and Installation,
Indoor Air Quality Products and Accessories, Water Heaters, and more.
See what makes us the first choice for our customers:


Blue Dot offers multiple appointment windows available throughout the day and into the evening. We will also call you before your technician arrives so you can go about your day instead of waiting around at home. Schedule Online Now
You never know when a furnace or AC will just quit working. Which is why we won’t charge you additional fees just because it’s after-hours. When emergencies happen, you can count on Blue Dot – even in the middle of the night!Call 410-809-2124
Before any work begins, your technician or Comfort Consultant will go over all pricing and explain in detail their recommendations.Learn More

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Background Checked Professionals

All of our technicians and Comfort Consultants are back-ground checked. And with continuous on-the-job training, you can be sure the Blue Dot representative you’ve allowed in your home is a trained professional.

Guaranteed Satisfaction


Our 100% Unconditional Money-Back Guarantee ensures that no matter what happens, you will be protected. Here at Blue Dot, we will “make it right” whether that means a repair, replacement, or complete refund. Our goal is complete customer satisfaction!

Blue Carpet Service

We treat your home with the respect it deserves. Our customers appreciate the fact that our technicians and service team are polite and will go above and beyond the call of duty. For example, if a customer also needs a light bulb changed, our Blue Dot service team has been known to do that.

…and more!

  • Personal, Individual Attention
  • A guarantee on parts and labor
  • Financing options for new installations
  • Licensed Professionals
  • Prompt service

But Don’t Take Our Word For It

Matt was great. I live in Richmond and have a house in Maryland. I could not asked for a better guy. He was fantastic. He was the best. HE WAS BY FAR THE BEST SERVICE TECH EVERRRRRRRRRRRRRR!!!!!!!!!!!!!!
Matthew G
I cannot do justice to the overall quality of the service, but I also want to pay homage to the kindness and the generous treatment that I received, in turn, from Adam, Glenn, Justin and Will. It is my pleasure and indeed my responsibility to commend each of them and Blue Dot for having such reputable competent and committed employees.
Patricia R
I believe I found my go to company now. I will continue to use Blue Dot Services and will refer them to all my investors, friends and other business associates. I wanted to say Thank you again to all the associates I dealt with from Blue Dot. You guys really impressed me. Well Done!
Donnie W
We are a long time Blue Dot customer and have always been pleased with our service. The latest visit was no exception. Our service rep, John M. was prompt, friendly and knowledgeable. He performed our service check and answered all of our questions. He also left us printed material and price quotes on possible future purchases. We would be happy to have John M. as our permanent Blue Dot service rep.
Amy C
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