Marathon Insulation

Great. They were very professional, prompt and thorough.

Great very pleased

Jonathan and his team did an incredible job with my new (to me) home in Pasadena. Vacuumed out all the old insulation and rodent droppings, fully blew in cellulose and insulated the entire attic space (floor joists, knee walls, ceilings, etc). It's an old Craftsman home and a bunch of those spaces didn't have access, but Jonathan and his team cut discrete holes / access hatches and explained everything beforehand. Incredibly pleasant and as a small business owner myself I have nothing but respect for the ownership he shows for his work.

Good work for a fare price

Jonathan was so accommodating. Met me on a Sunday and did the job on Wednesday. Did an excellent job. Knowledgeable, friendly and conscientious about his work. Paid attention to detail and left the place looking just like it was before he started. I would recommend them and if there is 10 Stars was available they would get all 10

After talking with several attic clean out and insulation, wall insulation companies, I decided to go with Marathon Insulation. Johnathan was very helpful and professional, gave the best choices for my issues, without trying to upsell like some of the others. After getting the attic and walls insulated (with attic clean out) I can already feel the heat stay in the rooms much longer and the walls much less cold to the touch before. I highly recommend Marathon Insulation! They were always on time, delivered as promised, and cleaned up after.

Excellent service!

Jonathan and his crew were amazing. They showed up on time, they were professional and listened to what I wanted to achieve and asked clarifying questions. They got to work quickly and were very efficient.

Great service from a great company! Jonathan and his team are professional, skilled, efficient, and reliable! Came by for a free check of current insulation (there was none!!) and arrived 15 minutes earlier than his scheduled start time! Our house is built in the early 50s with no insulation and old walls, but him and his team worked quickly and efficiently, and the difference was HUGE! Before these guys, the AC ran about 19-22 hours a day (my Nest tracks this stuff) to try to keep temperature at 74 and it almost never actually reached it till maybe 3am, then was off for an hour, then on again. During the day, house temperature would go up instead of down despite the AC's best efforts! Don't even get me started on the 500+ electric bill for a 1200 Sqft home! Now, a day after their full wall insulation from the outside (no damage to interior AT ALL), the house stayed at 73 even though the AC was powered off from 4:30pm until now, 10:20pm, and was even off most of the time before that, only coming on for a few minutes every few hours to bring it down 1 degree, the way it's supposed to work. Outside it was 90s with hot gusts of wind. I could not be happier with their work, level of expertise and professionalism, friendly demeanor, and GREAT pricing!! Masterful job, Marathon Insulation. Will definitely refer you to all my friends and family, well done and thank you for coming thru before the heat got even worse!! Props Jonathan and crew, wish you all the best.

I hired them initially to insulate my attic area. Once I saw that there was a 10-12 degree difference in one of the rooms I hired them again to come back and do the walls. They are fast, affordable, and professional.

My husband and I are extremely pleased with the quality of work Marathon Insulation provided in my home. They kindly explained the process of their work. I highly recommend their services. Very professional and punctual.

The process went smoothly from estimate to getting the insulation installed. Everything was done in a timely manner and the job extremely clean and professional. Overall very satisfied would recommend to everyone

Got our attic insulated and immediately felt the difference. The service was great and calling them back in the near future to get my walls insulated as well. Thanks a lot marathon insulation for the job well done!

Marathon insulation is a company that I recommend to everyone that needs insulation done to their home. Jonathan helped me get a quote the same day. They worked on my house quickly, they gave me a foot of insulation in my attic and packed it in my walls around my house. I used to feel all my walls hot and my A/C would blow hard for hours. Now I feel it cooler and my A/C is blowing less.

Service and quality of the work done on my walls and attic were GREAT!!! I kid you not, I could actually feel the difference as they were doing the work. I live by a busy street and by doing my exterior walls it knocked down so much of the street sound. So happy! For them being a new company you could actually tell that there’s plenty of experience! Quality work with great prices, can’t go wrong ! WOULD DEFINITELY RECOMMEND. Two thumbs up!!!