4.5 
1k+ *The Angi rating for Electrical Service companies in Longmont, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Electrical Service needs.
*The HomeAdvisor rating for Electrical Service companies in Longmont, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Electrical Service needs.
Last update on October 13, 2025
Serving Longmont, CO and surrounding areas
Approved
In business since 2005
Free estimates
Emergency services offered
"I had TV, DVD, VCR, stereo equipment wired and an existing home speaker/intercom system that he got back into operation."
+7
Serving Longmont, CO and surrounding areas
Approved
In business since 1992
Free estimates
Credit card accepted
"Installed three ceiling fans of varying complexity. Great service. A pleasure to do business with. I will call again."
+1
Serving Longmont, CO and surrounding areas
Approved
In business since 1994
Free estimates
Emergency services offered
"Bryan Kiernan did a fantastic job installing a sub panel in my basement. He was fast, thorough, and used high quality materials. I highly recommend him and JM Electric."
+2
Serving Longmont, CO and surrounding areas
Approved
In business since 2010
Free estimates
Warranties offered
"The Diagnostic Guys are our go to for anything electrical. They have done great work updating our light fixtures, adding new lighting (indoor and outdoor) and adding outlets. They are always courteous, prompt and meticulous about the details. Couldn’t be happier with the services they’ve provided for us!"
+11
Serving Longmont, CO and surrounding areas
Approved
In business since 2016
Customers say: Quick response
"He was very efficient. He worked fast and his prices were cheap. I couldn't ask for a better electrician."
Serving Longmont, CO and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Emergency services offered
"Clay was prompt and very courteous. Explained the issue with the electrical outlet and replaced it back to working condition. He throughly cleaned up the area. Greatly appreciate him being available on such short notice."
+2
Serving Longmont, CO and surrounding areas
Approved
In business since 1998
Free estimates
Warranties offered
"What a terrific experience we had with Mighty Bee Electric! Martin came the next day after we called. He was on time, clearly knows what he is doing and fixed everything for the estimated cost. And there was no upselling! I will definitely call him for any future electric work!"
+17
Serving Longmont, CO and surrounding areas
Approved
In business since 1983
Free estimates
Credit card accepted
"ELI was wonderful! He arrived on time, was friendly, thorough and quick. What really impressed me was ELI'S attention to the little details--he made sure no water, garbage got loose under the counter, used a mat to protect my floor/inside counter, cleaned up everything--even my sink--when he was done and, finally, put everything back under the counter where it was before he came! Above and beyond customer service! I will recommend AAA who anyone who needs drains unplugged! Also I like the company and especially the SERVICE so much, I'm meeting with a tech for another job--electrical this time. THANK YOU, ELI for your time, service and patience with my speech! much appreciated!"
Serving Longmont, CO and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"They replaced my electrical panel and moved it up higher to be more accessible."
+12
Serving Longmont, CO and surrounding areas
Approved
In business since 2009
Free estimates
Warranties offered
"Definitely recommend Trevor with Professional Power. Knowledgeable, on time and got the job done"
+3
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