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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 351-375 of 446 reviews

Michelle E.
09/2015
5.0
insulation
  + -1 more
unknown
Description of Work: Service
Rating CategoryRating out of 5
Yes, I recommend this pro

David A.
07/2015
4.0
energy audit, heating & air conditioning/hvac, insulation
  + 1 more
Fine
Description of Work: Energy audit

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

Yes, I recommend this pro

Mary Ann A.
07/2015
5.0
heating & air conditioning/hvac
  + -1 more
.
Description of Work: .
Rating CategoryRating out of 5
Yes, I recommend this pro
$79

DAVID F.
07/2015
3.0
insulation
  + -1 more
a lackluster audit
Description of Work: Please note this provider is out of business

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

$39

eugene M.
05/2015
5.0
insulation
  + -1 more
unknown

Rating CategoryRating out of 5
quality
5.0
punctuality
5.0

Yes, I recommend this pro
$100

Dorin H.
04/2015
5.0
insulation
  + -1 more
unknown

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

Yes, I recommend this pro
$2,500

Matthew H.
04/2015
5.0
insulation
  + -1 more
unknown

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

Lisa P.
02/2015
2.0
energy audit, insulation
  + 0 more
unknown
Description of Work: energy assessment, but not what I told them I needed. First person that came, did not have sufficient knowledge....second person, had more knowledge, but not what I was looking for. Couldnt do blower door test at the time because of mold, but after mold was remediated, they refused to come back to finish the blower door assessment because they said the other work that they would have wanted to do had already been done. Basically didnt get what I paid for.

Rating CategoryRating out of 5
quality
2.0
professionalism
2.0
responsiveness
3.0
punctuality
5.0

$85

Eric B.
02/2015
1.0
insulation
  + -1 more
unknown
Description of Work: we scheduled our work for insulation and sealing and they never showed. Apparently they went bankrupt and were purchased but we're still trying to sell new customers.

Rating CategoryRating out of 5
professionalism
1.0
responsiveness
1.0
punctuality
1.0


William H.
01/2015
5.0
insulation
  + -1 more
unknown
Description of Work: |service tbd

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

RICHARD M.
01/2015
1.0
insulation
  + -1 more
unknown
Description of Work: They cashed the down payment check, did no work, and would not answer calls or Emails. I am out one thousand seven hundred and fifty thee dollars!

Rating CategoryRating out of 5
quality
1.0
value
1.0
professionalism
1.0
responsiveness
1.0
punctuality
1.0

$1,753

Day M.
01/2015
5.0
insulation
  + -1 more
unknown
Description of Work: They sealed the attic, 2 crawl spaces and caulked around some windows. |They had a new employee who offered to do more than Mark offered. When they found out what was going on they did more than what they originally said they could do and spent time making it right for me at the price that was agreed upon. |I would use them again.

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
$1,300

Vijay A.
01/2015
5.0
insulation
  + -1 more
No Service was provided
Description of Work: No Service was provided

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

Yes, I recommend this pro
$99

ANN M.
12/2014
5.0
energy audit
  + -1 more
unknown
Description of Work: They gave us an initial energy assessment. They were great.
Rating CategoryRating out of 5
Yes, I recommend this pro

Kim L.
12/2014
5.0
energy audit, heating & air conditioning/hvac, insulation
  + 1 more
unknown
Description of Work: Mark Group did a very thorough energy audit of our home and came back with a comprehensive report. I applaud their integrity because they concluded that overall we were in very good shape and the smaller things they could do to make our home even more energy efficient were not going to provide enough of a return on investment to be worth doing. Only an honest company tells you that you don't need their services!

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
$99

Michael N.
12/2014
5.0
energy audit, heating & air conditioning/hvac, insulation
  + 1 more
unknown
Description of Work: The Mark Group was completely professional during the entire home energy audit process. The representative arrived on time and was super friendly. He explained the home energy audit process and asked good questions to see what my concerns were with the home. Overall it was a great experience and I will be contracting Mark Group to perform work on my home.

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

$4,300

Brian M.
12/2014
5.0
insulation
  + -1 more
unknown

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
$89

Paul T.
12/2014
5.0
basement waterproofing, electrician, energy audit, remodeling, heating & air conditioning/hvac, insulation
  + 4 more
unknown
Description of Work: First, they performed a shorter energy inspection. Then they performed a multi-hour energy audit. Then they presented their findings. My house was reasonably tight, but it needed R-49 insulation in the attic; additional insulation and vapor barrier in the basement; and an outlet for the master bathroom exhaust fan (the builder merely vented the fan into the attic).

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

Yes, I recommend this pro
$4,000

Thandi S.
12/2014
5.0
insulation
  + -1 more
unknown

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

Yes, I recommend this pro

James W.
10/2014
5.0
heating & air conditioning/hvac, insulation, energy audit
  + 1 more
unknown
Description of Work: Home Energy audit- They were punctual and did a very thorough job.

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
$75

donna m B.
10/2014
2.0
insulation, plumbing
  + 0 more
unknown
Description of Work: prompt, polite ,professional? yes. work done was merely spray foaming only the jperimeter of basement ceiling and around a few pipes. more time spent setting up an "air tightness" type test which i was never given results for. completely outrageous price for service rendered. wanted customer to review them while they looked over your shoulder at survey. would not recommend.

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

$1

Response from Mark Group
[member name removed], Please accept our since apology for the frustration you’ve expressed in your review. - Due to tightness of the roof cavity in your home, we determined that energy saving measures were not feasible in the attic. Pricing was adjusted to reflect the basement upgrades only. - Air infiltration diagnostics are a crucial component to air sealing a home. Following your installation, we conducted a blower door to ensure your home was “breathing” properly. We are happy to provide you with a copy of the report. We remain available at your convenience should you have additional questions or concerns. Kind regards, Mark Group

Kennedy A.
10/2014
5.0
insulation, energy audit
  + 0 more
unknown
Description of Work: Energy assessment and cost to add more insulation was provided

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

Yes, I recommend this pro

Annie R.
08/2011
5.0
insulation, energy audit
  + 0 more
I live in a row home in Philadelphia. My second floor was always cold in the winter and hot in the summer. I had read about Mark Group in the Philadelphia Inquirer so I called. Everyone that I dealt with from the first phone call to the installation was very knowledgeable and helped me make these improvements to my home in the way that best worked for me. I considered the low-interest financing option that they offered as a certified Energy Works contractor but I decided to just make the upfront investment since it wasn't actually that much. The process started, for me, with a Mark Group Home Performance Adviser coming to check my home and tell me ways that I could save energy. About 2 days later I got formal recommendations with pricing. We prioritized what would make the biggest impact in my home and I was able to schedule the improvements for the following week. The crew that came to install was probably the nicest and most educated contractors that have step foot in my house. And though I got a laugh out of their booties, I was happy they kept my house clean. The did some work in my basement as well as sealed and insulated my attic from my roof. They were gone by 3 PM and I could feel the difference before they left. Now that we're almost through the summer I thought I would right up a report since my upstairs has also been easier to keep cool, even in the heat waves. I think I've saved about 15% on my utility bills. Great group of people- would and have recommended them to friends and family.
Description of Work: I received the following services from Mark Group: - Home Energy Analysis - Basement was sealed - Attic was sealed and 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
$1,500

Sherry M.
08/2011
2.0
energy audit
  + -1 more
My company gets a discount for Energy audit services from Mark Group. The price of their most comprehensive energy audit was reduced significantly (from about $500) to $51. My company got a $99 discount, and the energy audit program currently in effect for surrounding counties paid for the rest. Sounded like a great idea.I signed up and scheduled the audit in July. The Service rep showed up a bit late, but was professional. The audit took about 3 hours. The service rep was supposed to email me the report two days later - nothing. A week later...nothing. Two weeks later - I get a call from the Service manager stating the rep who conduced my audit was since let go from the company and all of my paperwork was missing. Thus, they had to redo the entire audit. Ok, frustrating but ok. The next available Saturday was four weeks later - fine, my appointment was confirmed. Although I wrote them a check, it was never submitted by the service rep and thus, never cashed.Three days before the redo appointment, I get a call stating that they couldn't remember what was going on and why I was scheduled for another audit. They also didn't know how/if I had paid for the appointment! I reminded them of the conversation that we had and why we had to redo the audit. They told me that they had no one to perform the audit on the date scheduled (one guy, worked last weekend, not sure if he could work this weekend...???). I said, forget it and cancelled the appointment.The entire experience was handled very poorly. The company seems to have few resources, with little effective processes to manage the business effectively. I would not recommend working with them, and will never utilize their services again. Update: The President of the company called me to apologize for the situation. I also received an email from my original contact person at the company apologizing. She offered to reschedule the audit at no cost to me. I thanked them for the effort, but declined. Updated my rating from F to D based on these actions.
Description of Work: Full-house energy audit

Rating CategoryRating out of 5
quality
2.0
value
5.0
professionalism
2.0
responsiveness
2.0
punctuality
2.0


Paul S.
05/2011
5.0
insulation, energy audit
  + 0 more
From start to finish, they were friendly, knowledgeable, and professional. They are indeed much more reasonably priced than their competitors, and they readily tell you where you don't need additional insulation and where you do. I would not hesitate to recommend them to anyone. They were an absolute pleasure.
Description of Work: I first became aware of this company a couple of months ago when they were written up in The Philadelphia Inquirer. The article mentioned that they were a British company that recently expanded to the United States and that their estimates were substantially less than their competitors. I gave them a call and they set up a date and time at our convenience to come to our home to provide us with a free energy audit. The person who came out to do the audit was very friendly and knowledgeable and requested that I walk around with him so that he could point out those areas that needed additional insulation, etc. They promptly provided me with a written itemized estimate with their recommendations. I went with their suggestions and chose a date for them to perform the services. Their crew arrived right on time and went to work insulating our attic and basement. The crew was extremely friendly and pleasant. Several men completed the entire project within a few hours. They showed us what they did and we were quite pleased with the quality of their 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
$1,900

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