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Mark Group

Insulation, Energy Efficiency Auditing, Heating and Air Conditioning,

About us

Our mission is to enhance the quality of life for our customers through the installation of quality building performance improvements. Since 1974, we have helped over two million homeowners address rooms that are always too hot or too cold, eliminate unwanted drafts and reduce unnecessarily high energy bills. We pride ourselves on the quality of service that comes from well-trained, diligent and respectful employees. Moreover, our installation crew leaders are certified by the Building Performance Institute, a national organization that sets the standard for residential energy efficiency retrofit work. Let us help you get your house in line today. Extension 685 for phone. Additional DBAs - Inspired Marketing LLC, Inspired Green. Additional phone number - (517) 321-4935.

Business highlights

51 years of trusted experience

Services we offer

Energy analysis, air sealing and insulation, attics, basements, crawl spaces, exterior walls, lighting, window installation, heating, ventilation & air conditioning (HVAC).

Amenities

Free Estimates
Yes
Warranties
Yes


Accepted payment methods

American Express
Check
Discover
MasterCard
Visa

Photos of past projects

Reviews

4.5446 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
71%
4
14%
3
6%
2
3%
1
5%


Rating CategoryRating out of 5
quality
4.6
value
4.4
professionalism
4.7
responsiveness
4.6
punctuality
4.7
Showing 326-350 of 446 reviews

Marcie F.
09/2012
5.0
insulation
  + -1 more
I didn't think I'd see that much of a difference till the cold weather comes, but boy, was I mistaken! Our electric bills from the constant running of our central air conditioning came down over $100 in 1 month. Plus, the rooms were more comfortable immediately.
Description of Work: After emptying the attic, the existing floor boards were lifted, foam baffles were added to increase the amount of insulation that could be blown in. The attic doors were insulated as well as 14 "high hat" flush ceiling lights in the rooms below the attic. That was a lot of cold air "leaking” into our living space. Some old insulation was removed from the side walls and crawl space because it wasn't installed correctly back in the 70's. Those areas were also re-insulated.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$1,600

Linda W.
09/2012
2.0
insulation, energy audit
  + 0 more
I asked him to refund my money, minus the $130 for the feasibility study, because I do feel like they deserve that since they did do the study. However, since he never relayed the information to the worker until he arrived for the job, I don't feel it was fair they charged me.
Description of Work: I called them because I wanted to know about insulation for my house because it gets cold in the winter time. He came out and did a feasibility study on 7/9/2012. Two employees came out and went to my thid floor and attic, and collected all the necessary information. They determined they needed to create an access point into a previously inaccessible cavity. They also needed to install baffle vents and upgrade a wall to be more energy efficient. On 8/10/12 they came back to do work. They went up to put the insulation in the attic, but then came back down and informed me they could not insulate up there due to the age of the house and the electrical wires. I called the man who did the proposal, and he said he was aware of the old wires, but he had never conveyed it to the workers. I told the workers to go ahead and do what they could given the new circumstance. He then relayed to me he could not do the bedroom due to "knob and tube" wiring there as well. I then gave him permission to try and do it on the other side of the house, but once again, they were unable to. They instead put paneling on the walls, but it looked like there were childrens finger prints all over it. It looked nasty! They had to come back and clean it for me. They then said they would send me information on an electrician, and refunded me the money for the feasibility study. I then asked if it made sense that the knob and tube wiring was also in the walls. I never heard back from them. I think that since he knew the wiring was in the attic, he should have known it was in the walls. I would love to be able to get a refund. I am in the same position I was in before, if not worse.

Rating CategoryRating out of 5
quality
1.0
value
5.0
professionalism
4.0
responsiveness
3.0
punctuality
5.0

$470

ANDREW M.
09/2012
4.0
energy audit
  + -1 more
I believe they are a professional firm but must find a way to price themselves more competitively if they are to get complete jobs. I did not hire them to do the energy management improvement because their work was significantly over priced for insulation, storm windows, etc
Description of Work: Yes, an energy audit. No additional work was purchased.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

$200

Response from Mark Group
We always appreciate customer feedback, but this is not a comment we hear frequently. As with any service, we recommend our customers obtain several quotes before proceeding with energy efficiency home improvements. What we've found is that when we compare our proposals and recommendations with other providers, the services, processes and quality associated with competitive quotations are not 'apples to apples.' For example, many companies will provide a quote to insulate portions of your home. We've found that very few companies include air sealing as part of that project which significantly diminishes the energy-saving results (supported by the U.S. Department of Energy). Further, even fewer conduct testing before and after the installation to ensure the improvements have delivered the energy-saving results that were expected. Mark Group Technicians conduct this testing after every whole-house energy efficiency upgrade project. Our Home Performance Advisors and Technicians are trained at the Mark Group Academy and all Home Performance Crew Leaders are certified by the Building Performance Institute, so they understand the science behind the energy efficiency improvements they are installing. Mark Group Advisors and Technicians wear booties whenever we are in a customer's home and thoroughly clean after the project is complete. Our customers greatly appreciate the quality and professionalism Mark Group brings to each and every project. In addition, we leverage global supply agreements to ensure we can offer our customers competitive pricing for our products and services. We evaluate and adjust pricing quarterly, as appropriate. We’d be happy to compare our proposal to the others you’ve received to ensure you are comparing apples to apples. If any pricing adjustments since March 2012 (when your proposal was presented) would affect your project price, we can also make those changes. Please feel free to contact us if you’d like to schedule such a review with one of our Home Performance Advisors before the heating season sets in.

Matthew S.
09/2012
5.0
insulation, energy audit
  + 0 more
They showed up on time and handled special requests without any problems. I noticed a reduction in our energy bills since they did the work; they did a good job overall!
Description of Work: They did some insulation work and energy efficiency auditing.

Rating CategoryRating out of 5
quality
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

David O.
09/2012
5.0
energy audit
  + -1 more
Overall, the experience was good. They were very courteous, professional, and I was impressed with the fact that they showed us that we didn’t really need much. They didn’t try to sell us unnecessary things, and gave us a recommendation to switch electric providers. They did a thorough job and were very honest.
Description of Work: They provided an energy assessment, and looked for ways to cut the energy bill. It was an initial assessment that was free.

Rating CategoryRating out of 5
quality
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Walter T.
09/2012
5.0
energy audit
  + -1 more
The experience was fine overall. They were very informative.
Description of Work: They assessed my home for energy efficiency. It was a free assessment.

Rating CategoryRating out of 5
quality
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

WHITON S P.
09/2012
5.0
replacement windows
  + -1 more
The service went very well overall. They were courteous, and ran into a problem, which they resolved (It wasn’t their fault, but the manufactures’). They were great to deal with!
Description of Work: They installed new storm windows.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Christian S.
09/2012
5.0
insulation
  + -1 more
The service was fabulous overall. They were very knowledgeable and we got what we paid for!
Description of Work: They insulated our attic. We also had some special requests, including an attic door in the attic and building a cover for a box fan, which they were able to take care of.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Neil M.
08/2012
5.0
insulation
  + -1 more
Crew showed up on time, introduced themselves, then surveyed the job to be done. Job has completed within six hours with minium invasiveness to the pemises despite the intense heat. The crew was very polite and gregarious.
Description of Work: Seal attic, preserve attic ventalation, and upgrade insulation to R60.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$2,500

john B.
05/2012
5.0
insulation, energy audit
  + 0 more
Mark group arrived at 8 am as promised, this also happened on the hottest day of the month, they never stopped until the job was completed. They cleaned up as they worked and left my house like they were never here. very satisified with their work and professionalism
Description of Work: I had Mark Group out for an energy audit, once the inspection was complete they recommended adding 2' rigid board insulation plus additional insulation in attic, which would bring our R value to 49 or higher, they air sealed all areas of the attic and basement including duct work. I also had a floor installed in attic which gives me additional storage. Mark Group arrived on time and completed the job as promised, the men were professional and courtious,and I would highly recommend them and use them again in the future.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$1,800

Kim S.
04/2012
3.0
insulation
  + -1 more
The original estimator for Mark Group apparently provided inaccurate information to the company. A second estimator returned with the first estimator and did a thorough reassessment (spending several hours going over the home with a fine tooth comb). When the workers arrived, they realized the situation and that the work contracted for could not be completed. They called their office and reported the situation at which time the field manager arrived to explain the situation. Overall, this was a very disappointing situation. I did appreciate the honesty of the field manager and on-site workers. As they had with a previous Angie's member, they informed me that both gentlemen were no longer employed by Mark Group.
Description of Work: Vapor sealed foundation/crawl space of home extension; insulated rafters of corresponding attic space

Rating CategoryRating out of 5
quality
4.0
value
4.0
professionalism
3.0
responsiveness
4.0
punctuality
4.0

$2,000

Response from Mark Group
After reviewing this client’s experience, we regretfully agree with the “C” rating. We pride ourselves on the strong communication between our Analysis and Operations teams, and that communication broke down here. Despite his experience and training, the measures recommended by the Home Performance Manager, while energy-saving, were not the most effective recommendations for this home. Ultimately, we feel we did right by our customer by only implementing the measures we believed would offer the greatest impact on comfort and savings as well as return on investment, despite the fact that this reduced Mark Group’s project scope and cost by half. We certainly understand the disappointment and sincerely apologized for the situation prior to the report. We strive to deliver an “A” experience to everyone of our customers, but if/when mistakes are made we own up to them and proceed with respect and honesty.

Susan K.
04/2012
5.0
insulation
  + -1 more
The workers, were on time, explained the work to be done, laid protective covering over my floors, were efficient and professional.
Description of Work: Insulated basement walls and seal band joint.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$412

Anne W.
03/2012
5.0
insulation
  + -1 more
They were right on time and brought in the materials right away and got started immediately. They were very efficient and professional and done with the project in about four hours, which was ahead of the estimated timeframe they provided me. I’m very pleased with the work and I’m glad I chose them.
Description of Work: The added insulation in my crawlspace and my basement.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Christian S.
01/2012
5.0
insulation
  + -1 more
They were very professional, knowledgeable and worked with me to create some great solutions for our attic. We are very happy with the work.
Description of Work: They insulated our attic, sealed and insulated our attic door, created an insulated box for the whole house fan, and insulated a small area of our band joist to lessen a stack effect in our kitchen.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$2,400

elizabeth D.
01/2012
5.0
insulation, energy audit
  + 0 more
Went well. The original estimator for Mark Group apparently provided inaccurate information to the company. Appreciated that when the workers arrived and realized the situation, they immediately called their office and reported the situation. They were honest with me about the situation and that the gentleman was no longer employed by Mark Group. They gave me a new estimate which was lower than the original. The job took longer than originally estimated due to several problems that arose. I felt very badly for the workers because it was getting very hot in the attic. They completed the job and did a very good job. They missed a hidden window in the basement and when I called them they sent another team out to insulate around the window. Everyone was very polite and professional and I was pleased with the work they did.
Description of Work: Installed insulation in attic and air sealed the openings in the foundation and around windows in the basement per an energy audit done by another company.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$1,600

Jane S.
01/2012
5.0
insulation
  + -1 more
I found the Mark Group through an excellent recommendation from friends and, at the same time, through Angie's List. John, who came out to look at the project, was both professional and informative. He quickly got back to me with a detailed estimate, and seemed able to easily pull together different facets of a complicated insulation project. While I decided to go with a different company, it was a difficult decision, and I would definitely consider them again!
Description of Work: The project was to tighten and insulate the house. The Mark Group helped fine tune the specifics involved and prioritize components, and gave me a detailed estimate.

Rating CategoryRating out of 5
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Suzanne G.
01/2012
5.0
insulation, energy audit
  + 0 more
Excellent, professional work, done in a very timely manner. Both the auditor and the work crew arrived on time, explained in detail all recommendations and work to be done; showed us problem areas before and after; documented their work; and cleaned up after themselves. Initial recommendations took into consideration our budget; there was no hard sell for additional services. We would certainly use them again.
Description of Work: Insulated accessible areas of basement and air sealed and insulated our attic, following an energy audit and various recommendations.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$1,600

Sarah G.
12/2011
4.0
insulation, energy audit
  + 0 more
They were very prompt, very professional, very polite and pleasant. They cleaned up after themselves. I cannot yet say if the insulation is making a difference - the coming winter will determine that. In the meantime, I've noticed one or two very small places in my basement where I can still see slivers of daylight, so I don't think they were as careful as they might have been. But overall, I think they did a very good job, based on the appearance of their work. I think they charged me an awful lot, however. When their representative came for the assessment, he told me the job would take two days. At that point, he gave me the estimate, and I agreed to the price, which was high. But I figured - OK two days' work for a crew of guys, whatever. However, the team finished the job in one day. Not even a long day - they were done by like 3 pm. So there was substantially less labor involved than I'd been led to expect when I received the estimate.
Description of Work: The Mark Group insulated my basement and attic. A different company performed an energy audit on my home and recommended the addition of foam insulation in my basement and attic. The Mark Group reviewed that auditor's report and came in and did a brief assessment, after which they agreed with the auditor's findings. They sent a crew in to spray foam insulation in my attic and basement.

Rating CategoryRating out of 5
quality
4.0
value
3.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$4,500

Timothy B.
11/2011
5.0
insulation, energy audit
  + 0 more
I was very pleased with this company. In fact, I plan on having them back for insulation work in the future.
Description of Work: They sealed all air infiltration points in my attic.

Rating CategoryRating out of 5
quality
5.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Jessica C.
11/2011
5.0
insulation, energy audit
  + 0 more
Everything went very well. The guys that came were very meticulous and thorough. I thought they did excellent work, and cleaned up after themselves extremely well. They were really knowledgeable about how we could best improve our home’s energy efficiency, and I felt confident in their abilities.
Description of Work: Mark Group performed several energy efficiency updates to our home, which mostly included insulation work.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Caroline C.
11/2011
4.0
insulation, energy audit
  + 0 more
My experience with them was generally positive. The crew did accidently blow installation into our heating and cooling system, but Mark Group responded to our concern quickly when we found installation in a register. They cleaned up their mistake thoroughly, apologized, and were professional about the situation. Another smaller issue was that they didn’t secure the piping insulation tightly enough, so my husband had to retighten some of their work. Again, I did think they were professional, and I thought their price was fair.
Description of Work: They conducted an energy audit, and then performed a few energy efficiency upgrades as a result. This work included new insulation.

Rating CategoryRating out of 5
quality
3.0
value
4.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Brian S.
11/2011
5.0
insulation, replacement windows
  + 0 more
Everything went really well and I have had no complaints. They were very accommodating for my schedule. I would rate them very highly and I have no complaints.
Description of Work: They put in new, insulating windows in my house.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$7,000

Nancy F.
11/2011
5.0
insulation
  + -1 more
We decided not to go with them. They gave us a quote of $5500 for doing the job. My husband says that he was very impressed with them but they weren’t able to do the whole job. He says that he would have loved to have used them. We had found them on Angie's List and the interaction was very good.
Description of Work: Mark Group came out and gave us an estimate for insulation of the first floor.

Rating CategoryRating out of 5
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro

Dave G.
11/2011
5.0
insulation, energy audit
  + 0 more
The folks at The Mark Group came out and did a thorough inspection of my home and suggested how some energy saving improvements could be made. Their list was detailed and a price for each item listed separately. I was expecting it to be considerably more so pleasantly surprised when I saw the quote. I gave them the OK and they were out the day they said they were going to be. The foreman of the job said it would probably be more than one day after seeing what was involved. They were neat and very respectful of my home. The foreman even said that one of the items on the list wasn't going to improve efficiency but had a suggestion for another part of the house which was considerably less in cost than the item he said wasn't necessary. The person that came out to give the original quote even said that he couldn't see through the wall but if the guys coming out to do the work deemed it not necessary they wouldn't do it. That added a lot of credibility to the company. The second day the guys returned and finished the job. After looking at the electric and gas bills after they did the improvements compared to before I can truly say that I am saving money and not wasting energy like I was. I was thoroughly happy with the experience from start to finish.
Description of Work: Added insulation to areas lacking it. Putting an insulation blanket on the crawl space walls. Sealing off a lot air leaks. Making an insulated cover for the pull down staors to the attic.

Rating CategoryRating out of 5
quality
5.0
value
5.0
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$1,975

Maryann F.
08/2011
5.0
insulation
  + -1 more
They were very good. The man who came out to do the estimate was very nice. He was communicative. Their prices were very reasonable. He was informative. He covered all the topics. He gave me a very clear hand written record of all that he had said. His estimate was to the point. He made every effort to try and understand what I wanted. I feel confident that this man would be able to do a good job, even though I didn’t make him do any work for me. I would use their services in the future also.
Description of Work: I used Mark Group services for an estimate for insulation. I used their services in June.

Rating CategoryRating out of 5
professionalism
5.0
responsiveness
5.0
punctuality
5.0

Yes, I recommend this pro
$1,400

Contact information

216 S Bridge St, Grand Ledge, MI 48837

goinspiredgreen.com

Service hours

Monday:
9:00 AM - 5:00 PM
Tuesday:
9:00 AM - 5:00 PM
Wednesday:
9:00 AM - 5:00 PM
Thursday:
9:00 AM - 5:00 PM
Friday:
9:00 AM - 5:00 PM

Licensing

Insured
State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our State Contractor License Requirements page.

*Contact business to see additional licenses.


Service Categories

Insulation,
Energy Efficiency Auditing,
Heating and Air Conditioning,
Home inspection,
Windows,
Water Heaters,
Handyman Services,
Doors,
Basement Waterproofing,
Plumbing,
Electrical,
Roofing

FAQ

Mark Group is currently rated 4.5 overall out of 5.

Monday: 9:00 AM - 5:00 PM

Tuesday: 9:00 AM - 5:00 PM

Wednesday: 9:00 AM - 5:00 PM

Thursday: 9:00 AM - 5:00 PM

Friday: 9:00 AM - 5:00 PM

Mark Group accepts the following forms of payment: American Express,Check,Discover,MasterCard,Visa
Yes, Mark Group offers free project estimates.
No, Mark Group does not offer eco-friendly accreditations.
No, Mark Group does not offer a senior discount.
No, Mark Group does not offer emergency services.
Yes, Mark Group offers warranties.
Mark Group offers the following services: Energy analysis, air sealing and insulation, attics, basements, crawl spaces, exterior walls, lighting, window installation, heating, ventilation & air conditioning (HVAC).

Contact information

216 S Bridge St, Grand Ledge, MI 48837

goinspiredgreen.com

Service hours

Monday:
9:00 AM - 5:00 PM
Tuesday:
9:00 AM - 5:00 PM
Wednesday:
9:00 AM - 5:00 PM
Thursday:
9:00 AM - 5:00 PM
Friday:
9:00 AM - 5:00 PM