Insulation contractor · Grandville, MI · reviewed since 2021
iHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%82+44.7Reliability 24%73+17.7Value 14%99+14Replies to reviews 7%100+7.1Momentum penalty43−5.7Experts Score= 78Grade B: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.78SCORE
BGradeiLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#15 of 18 insulation contractorsiPosition by Experts Score among all companies we track in this category. · better than 18%
4.8★★★★★266 Google reviews · 23 photos
93%five-star reviews
4.45★last 12 monthsiAverage stars on reviews from the last 12 months only.
5%1–2★ in 2 yearsiShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
Customers frequently highlight professional conduct, punctuality, and thorough cleanup during attic and wall insulation projects. Recurring themes include fair pricing, responsive communication, and prompt scheduling for services like cellulose blow-in and vent installation. However, some low-star reviews criticize inadequate dust protection leading to excessive household mess, and discrepancies between verbal estimates and written quotes or scope of work.
Google rating: 4.8 out of 5 from 266 reviews (93% five-star).
Reviews on this page: 266 Google reviews (215 with written comments, 12 with photos).
Owner responses: the business replied to 100% of reviews.
Score per factor (100 = best)iEach factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: craft & service and replies to reviews; weakest: momentum.
This companyInsulation Contractors median0 = centre, 100 = best
SatisfactioniSatisfaction · 54% of the scoreRecency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.Koala Insulation of Grand Rapids: 82/100 on this factor. Category median: 92.A
82
ReliabilityiReliability · 24% of the scoreHow rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.Koala Insulation of Grand Rapids: 73/100 on this factor. Category median: 89.B
73
Craft & serviceiCraft & service · penalty only, up to −10 pointsGoogle review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.Koala Insulation of Grand Rapids: 100/100 on this factor. Category median: 98.A
100
ValueiValue · 14% of the scoreCustomers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.Koala Insulation of Grand Rapids: 99/100 on this factor. Category median: 100.A
99
MomentumiMomentum · penalty only, up to −10 pointsPenalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.Koala Insulation of Grand Rapids: 43/100 on this factor. Category median: 100.C
43
Replies to reviewsiReplies to reviews · 7% of the scoreHow often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.Koala Insulation of Grand Rapids: 100/100 on this factor. Category median: 100.A
100
Bar = this company · dark tick = category median.
Star ratings
266 Google reviews we collected
4.8of 5
5 stars24793%
4 stars104%
3 stars10%
2 stars31%
1 star52%
Praise vs complaints
Phrases our text analysis found in 215 written reviews
98%praise
Praise51898%
Complaints82%
PriceiGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.
Price verdicts customers left with their Google review
94%fair
Great price956%
Reasonable638%
Overpriced16%
Not sure00%
Topic share
How often each topic comes up in the written reviews
7topics
Staff & attitude12323%
Quality & results10019%
Speed & response9819%
Would recommend8115%
Price & value6312%
Communication479%
Honesty & trust143%
What customers talk about
We read 215 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.
“Koala Insulation was very professional and efficient!”
“I would recommend their high quality work to others and work with them again in the future if needed!”
“Koala was on the ball and came back the same day to clean up the over flow and even dusted any areas that needed it.”
“If you're looking for a reliable team, I highly recommend these guys!”
“The estimator was fair & accurate; The work was of the highest quality; and, the workers were knowledgeable & skilled, able to accurately drill holes…”
“He stated that regarding the soffit vents (exact quote) "they are all blocked".”
“They kept me informed throughout the process and did everything on time as they said they would.”
“Also a shout out to Chaz the salesman very upfront and explains everything in detail.”
“I am 66 years old on social security and expect better from contractors no integrity.”
People customers mention
Chaz17 reviews
Dylan6 reviews
Brian4 reviews
Corbin4 reviews
Nick3 reviews
praise complaint · found by our text analysis, Google review wording unchanged.
Reviews for your job
Customers hired Koala Insulation of Grand Rapids for 1 kind of job. Pick one to see what they paid and said.
JJ11 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a week ago★★★★★
Kaola Insulation is the best. Professional, knowledgeable and reasonably priced. They are customer centered and keep their word. Would definately recommend and would use them again.
Great priceService not listed
JJoeLocal Guide · 17 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a week ago★★★★★
Koala Insulation was very professional and efficient! They came in with their crew and got my attic looking incredible. They kept me informed throughout the process and did everything on time as they said they would. I will definitely be using them again in the future.
FflowerwazsMarge5 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a week ago★★★★★
After insulating our 100 yr old house presented a couple of unexpected oops in the form of unseen openings of which insulation showed up in unexpected places. Koala was on the ball and came back the same day to clean up the over flow and even dusted any areas that needed it. I for sure give them kudo for Excellent communication and customer satisfaction
Reasonable priceService not listed
PPam7 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 weeks ago★★★★★
Fast, professional, trustworthy. Cellulose blow in insulation. It was a little dusty, but I'm so glad my husband didn't try this on his own and fall through the attic into the living room!
BBruce13 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 weeks ago★★★★★
Most highly recommended! Fantastic pricing! $3,000 for a whole house, main level insulating of every exterior wall in a standard Suburbia America Home!
Do know that it is super, super dusty & there will be lots of clean-up, so cover up everything in the center of the room with Plastic.
The estimator was fair &…
Great price
SSameerLocal Guide · 19 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 3 weeks ago★★★★★
Loved these guys! Jordan, Paco and Isaac absolutely killed it. Super courteous, personable, and made it incredibly easy. Will definitely be recommending Koala Insulation for my real estate buyers/sellers.
Kaola Insulation is the best. Professional, knowledgeable and reasonably priced. They are customer centered and keep their word. Would definately recommend and would use them again.
Price assessment: Great price
Services: Service not listed
Response from the owner · 6 days ago
Thanks a lot, J! We're so grateful for your kind words and thrilled to hear you found us professional, knowledgeable, and reasonably priced. We always strive for comfort and efficiency, and it's wonderful to know our commitment to the Koala Way resonated with you. Your recommendation means the world to us!
J
Joe videkiLocal Guide · 17 reviewsiTotal number of Google reviews Joe has written across all businesses on Google Maps, not just this one.
Koala Insulation was very professional and efficient! They came in with their crew and got my attic looking incredible. They kept me informed throughout the process and did everything on time as they said they would. I will definitely be using them again in the future.
Response from the owner · a week ago
Thanks a lot, Joe! We're so glad you experienced the comfort and efficiency we strive for at Koala Insulation. Our team takes pride in keeping you informed and delivering on time, so it’s great to hear you were pleased with the results. We can’t wait to help you again in the future, all in the Koala Way!
F
flowerwazsMarge Molengraff5 reviewsiTotal number of Google reviews flowerwazsMarge has written across all businesses on Google Maps, not just this one.
After insulating our 100 yr old house presented a couple of unexpected oops in the form of unseen openings of which insulation showed up in unexpected places. Koala was on the ball and came back the same day to clean up the over flow and even dusted any areas that needed it. I for sure give them kudo for Excellent communication and customer satisfaction
Price assessment: Reasonable price
Services: Service not listed
Response from the owner · a week ago
Thanks for sharing your feedback, Marge! We're so glad to hear that our team was quick to address the unexpected challenges during your insulation project, ensuring both comfort and efficiency. Your kind words about our communication and customer satisfaction truly reflect the Koala Way, and we appreciate your recognition of our efforts!
P
Pam Groom7 reviewsiTotal number of Google reviews Pam has written across all businesses on Google Maps, not just this one.
Fast, professional, trustworthy. Cellulose blow in insulation. It was a little dusty, but I'm so glad my husband didn't try this on his own and fall through the attic into the living room!
Response from the owner · a week ago
Thanks for sharing your feedback, Pam! We're delighted to hear that you found our team fast, professional, and trustworthy while enhancing your home's comfort and efficiency with cellulose insulation. Safety is our top priority, and we’re glad we could help you avoid any DIY mishaps the Koala Way!
B
Bruce Koole13 reviewsiTotal number of Google reviews Bruce has written across all businesses on Google Maps, not just this one.
Most highly recommended! Fantastic pricing! $3,000 for a whole house, main level insulating of every exterior wall in a standard Suburbia America Home!
Do know that it is super, super dusty & there will be lots of clean-up, so cover up everything in the center of the room with Plastic.
The estimator was fair & accurate; The work was of the highest quality; and, the workers were knowledgeable & skilled, able to accurately drill holes into the wall 16” apart on every wall with no mistakes. Very thankful & my house is now warm in winter, cool in summer, & my energy bills dropped. Very worth it.
Price assessment: Great price
Response from the owner · a week ago
Thank you so much, Bruce! We're delighted you found our pricing fantastic and that our team's expertise made such a positive impact on your home’s comfort and efficiency. We appreciate your valuable tips for future customers regarding the dust and clean-up. Enjoy your cozy home year-round, and thank you for choosing us to deliver on the Koala Promise!
S
Sameer ShahLocal Guide · 19 reviewsiTotal number of Google reviews Sameer has written across all businesses on Google Maps, not just this one.
Loved these guys! Jordan, Paco and Isaac absolutely killed it. Super courteous, personable, and made it incredibly easy. Will definitely be recommending Koala Insulation for my real estate buyers/sellers.
Price assessment: Great price
Response from the owner · 3 weeks ago
Thanks for sharing your feedback, Sameer! We’re delighted to hear that our team made the process so easy for you. Your recommendations mean a lot to us, and we’re committed to delivering comfort and efficiency the Koala Way.
T
Tim Heger6 reviewsiTotal number of Google reviews Tim has written across all businesses on Google Maps, not just this one.
Had a great experience with Koala. Fair price and great guys.
Price assessment: Great price
Response from the owner · 3 weeks ago
Thanks for sharing your feedback, Tim! We're glad you had a great experience with us and appreciate your kind words about our team's commitment to comfort and efficiency. That's the Koala Way!
J
Joe SchulteLocal Guide · 28 reviewsiTotal number of Google reviews Joe has written across all businesses on Google Maps, not just this one.
Thanks for the great feedback, Joe! We're delighted to hear that our team provided fantastic service. At Koala Insulation, we prioritize comfort and efficiency, and it’s wonderful to know we met your expectations the Koala Way!
S
Sarah Chase9 reviewsiTotal number of Google reviews Sarah has written across all businesses on Google Maps, not just this one.
Mario and Eddy from Koala Insulation of GR were professional and kind, taking the time to describe what they were doing before and after to ensure I understood and was happy with the attic vent installation and additional attic insulation (blown/loose cellulose). They were friendly to my dog and respectful to me, worked quickly, and cleaned up after themselves effectively. I would recommend their high quality work to others and work with them again in the future if needed!
Price assessment: Reasonable price
Services: Service not listed
Response from the owner · 4 months ago
Thank you so much, Sarah! We're grateful for your kind words about our team and the work they did with your attic vent installation and insulation. It's great to hear that you appreciated their professionalism and care during the process. Your recommendation means a lot to us, and we’re here whenever you need assistance in the future!
R
Rene L7 reviewsiTotal number of Google reviews Rene has written across all businesses on Google Maps, not just this one.
I recently had some insulation work done at my home and couldn’t be happier with the results. Eddy, Paco, Mario, and Dylan were fantastic. They were professional, worked efficiently, and made sure everything was cleaned up before they left. The ops manager, Brian, was also great to work with and kept the project on track throughout the entire process and made sure everything ran smoothly. If you're looking for a reliable team, I highly recommend these guys!
Response from the owner · 6 months ago
We’re so glad to hear about your positive experience, Rene! The team at Koala Insulation of Grand Rapids, including Eddy, Paco, Mario, Dylan, and Brian, truly appreciates your kind words. Your recommendation means a lot to us, and we’re delighted that you’re happy with the results!
