The spring broke on our heavy (300 lb) roll-up wooden garage door, of course, on a late Friday afternoon. We called Alert Door (who also answers the A-1 Garage Door phone #). Luckily, we didn’t need to have the door repaired until after the weekend on Monday, so an appointment was made.Monday morning we received a call from owner Lynn apologizing that their technician was running behind because the first job of the day was underestimated by the home owner. How refreshing it was to hear from a company before the actual appointment time! Jarrett arrived a bit after the original appointment time and was he great. Not only an effective technician but very pleasant & clean. He replaced the springs in no time flat, and gave the door a tune up (tightened all the bolts, lubricated the working parts of the door). Good to know that they will respond 24/7 if needed. Highly recommend Alert Door for your garage door needs!

Garage Doors Installation Repair

I called Alert Door after I had another company look at my broken garage door. The first company tech said he needed for his boss to come out and have a look. When asked for a rough estimate he said $700-$1000.
When I called Alert, I spoke to Lynn. She asked me to describe the problem, and she figured that I needed a new motor. She scheduled a visit the same day and informed me that she would have the tech load the truck with two types of motor so that they would be ready to complete the service.
When the Alert Door tech came over, he immediately diagnosed the problem, made a recommendation for a motor based on the type and weight of my door, and a price of $465!
Alert Door not only saved me money, they also saved me time and aggravation!
I recommend them highly. From the first customer contact to the last, Alert gave me friendly and expert service!

Susan B.

I have used Alert Door Service for my condo garage for a couple of years now, and I couldn't be happier. They are incredibly friendly, responsive and professional. I've called them for routine maintenance as well as repairs, and they consistently do a great job for a reasonable price.

Rachel E.

I called Alert Door Service after my Dad used their services for his home and for his commercial warehouse. Lynn is super prompt in answering phone calls and emails, and the repairman today, Jerrett, was nice and friendly. He gave me a quote and came in under that. They're very customer oriented and did a fantastic job on my garage door (which was crooked and wouldn't close properly) Will definitely use them again when it's time to replace my garage doors.

Mary C.

Being the manager of an apartment building with 2 garage doors I've run the full gammet of garage door installers. I won't even list the one's that I've used and how awful they were, but I will tell you that Alert Door is as good as it gets. Jim and his staff are always a pleasure to work with and take care of all of our problems!
Thanks Jim!


This company was great! I was referred to them by my roof contractor. I called for a meeting to discuss my rotting garage door and was met promptly at the arranged time. It made more sense to replace rather than repair and I was given a preliminary estimate on the spot. They email me the formal estimate. I called and scheduled the install. They arrived on time and finished early. Everything was done as promised. I couldn't imagine the process working any better.

Rob H.

the team gave great service and was very prompt. The tech seemed experienced and the garage door works like a charm

Ira R

My garage opener wasn't working I try changing the batteries and it still wouldn't open. So I look on line and found Alert Door Service they told me that they could get someone out in about an hour. He came out look at the garage door and found out a wire came undone. he spay some stuff on the release cord and sprayed my springs. The price was fair for his time to come to my house

Eldon D

I have been using Alert Door for many years and the level of expertise and customer service is unparalleled. This is a family owned business and they don't get much better than this. It starts with the phone call. Lynn and Dawn provide superior customer service at the onset and throughout. Owner operator Jim (and his team) know all there is to know about installing and/or repairing gates, rollups, access doors, etc. I would recommend Alert Door for any project, large or small. You can't go wrong! -

Jose Leon
Archdiocese of S.F.