Making Mississippi Homes & Businesses LIVE BETTER! When you need an HVAC or plumbing contractor, you don’t need to look any further than the professionals with Environment Masters. Our family owned company has been delivering quality plumbing & HVAC services since 1957, and our commitment to total customer satisfaction is as strong as ever. We have what it takes to provide the solutions to whatever issue you may be having. We also have a commitment to the communities we serve.