Emergency Service
& Repair

Need Us Now?
Call: 1-888-641-0100

When You Need service, Keystone is There.

While our inspection and testing services are designed to reduce the need for emergency service visits, should you require a technician to respond to your site, we are available 24 hours a day, 7 days a week, 52 weeks per year.

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Normal Business Hours

8:00 AM to 4:30 PM
Monday through Friday

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Overtime Hours

After 4:30 PM
Monday through Friday & all day Saturday

keystone icon alarm db test

Holidays & Sunday Hours

Sundays and Holidays all day**

keystone icon after hours alarm test

Normal Business Hours

8:00 AM to 4:30 PM
Monday through Friday

keystone icon antifreeze test

Overtime Hours

After 4:30 PM
Monday through Friday & all day Saturday

keystone icon alarm db test

Holidays & Sunday Hours

Sundays and Holidays all day**

** Holidays include: 

New Year’s Day, Memorial Day, Fourth of July, Labor Day, Thanksgiving, Thanksgiving Friday, Christmas Eve, and Christmas Day (should any of these days fall on a Saturday, holiday will be observed on the previous Friday; should any of these days fall on a Sunday, holiday will be observed the following Monday).