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Greenmark Home Performance - Home Insulation and Energy Experts

We make your home comfortable, affordable, and healthier!

Greenmark Home Performance has been providing thorough, quality home comfort assessments in St. Louis, MO and Metro East Illinois area for years. View our entire service area. We are certified as a Building Performance Institute, Building Analyst, and as an Envelope Professional. This means that we will be able to easily pinpoint areas of energy loss in your structure and provide proven solutions to ensure your comfort in your home.  Some of the main areas we focus on include:

Our Mission

Mark's mission is to make homeowners in St. Louis and Metro East comfortable in their homes using the "whole-home" approach, making homes more energy efficient, durable and healthier.

Meet The Owner

Mark Inman, Founder of Greenmark

Mark Inman has been providing comprehensive home evaluations for years now and knows precisely where to look in a building to discover where energy is being used, lost, and wasted. We have ideal solutions for all situations. He has teamed up with Department of Energy (DOE) Energy Star, Efficiency First, and local power distributors throughout the region.

Mark Inman is BPI Certified through the Building Performance Institute Envelope and Analyst certification #5036241. Because Home Energy Performance has evolved into a real business model, Mark Inman wants to lead this drive to more comfortable, efficient and, better quality homes.

Testimonials

Average rating for Greenmark Home Performance is 5 stars of 5 stars - based on 9 reviews
5
Crawl Space Encapsulation in O Fallon, IL
Work performed: Crawlspace Encapsulation.   "I was very satisified with Greenmark Home Performance.  They came out and air sealed my attic, added insulation, added ventilation and I had my crawlspace encapsulated.  I am very happy with all the work that was done! My home is more comfortable and I ...
5
Crawl Space Encapsulation in Edwardsville, IL
Mark came out to give us an estimate to encapsulate our crawl space area. He was very knowledgeable about the problems and explained the possible solutions.