 If your home could use some cooling, heating, plumbing, or electrical work, there are a number of things you should consider. Like these numbers. Constellation Home has over 400 certified professionals with an average of 11 years of experience. We'll serve you 24-7 with a 100% satisfaction guarantee. And yeah, we're the number one home services company in the area. But the number we're most proud of? We've been making Maryland homeowners feel comfortable for 30 years. Constellation Home. 30 years of home comfort.