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My Guy Heating and Air (Firestone)

4.9 153 reviews
Overall rating
4.9
out of 5
153 reviews
5 star 97%
4 star 1%
3 star 1%
2 star 0%
1 star 1%

About My Guy Heating and Air (Firestone)

My Guy Heating and Air is a trusted company that offers honest, efficient, and reliable Heating and Air Conditioning services to residential and light commercial clients. The business prides itself on treating customers with integrity and providing quality service at a fair price. Customers have praised the company for its quick response, flexible scheduling, and thorough problem-solving. Installation, service, and repairs are available for all cooling and heating needs. With friendly and courteous technicians, same-day service, and a focus on customer satisfaction, My Guy Heating and Air remains a highly recommended choice for homeowners and businesses alike. Customers have noted that the team is very polite, professional, and clean, with clear explanations of work being done. The installation process is quick, and the units perform very well, especially in rooms that are usually difficult to cool. The technicians are informative and do a great job, ensuring a high level of service with no upselling or unnecessary charges.

Sep 2026
5.0
Routine inspection & testing (as part of a their service program) of Lennox system was performed. Issues id’ed included unacceptable weak blower motor capacitor, worn contactor, dirty blower, dirty condenser fins, and dirty evaporator condensate tray. David was highly knowledgeable, thorough, experienced, and dedicated to excellence and customer satisfaction. Also discussed were ways to improve system efficiency and reliability. My experiences with My Guy HVAC is far superior to competing firms I have used and I highly recommend them to others who want high value for their HVAC needs.
Jul 2026
5.0
Just had My Guy Heating and Air come and install a brand-new unit. Park, Ivan, Carol, Danny, Ramon and Matthew were very polite, professional and worked very hard in the heat. Wes Cardenas had come out same day earlier this week to do our quote and was extremely thorough, patient with no pressure. He came back out after the unit was installed to make sure we were happy, satisfied and to see if there was anything else he could do for us. I have to say - from Wes to Diane to all the guys who made this possible - we are extremely grateful. I will recommend them to everyone. Thank you, guys. You all were GREAT!!
Jun 2026
5.0
We have been using My Guy Heating and Air and today technician, Bryan Lundstrom was here to make sure all systems were in good working order. He was friendly, efficient, professional and had a great smile. He gets a 5-star rating for the excellent job he did. At the end of each servicing My Guy always takes the time to go over their findings/issues, show pictures of their work and ask if we have any questions. We very much appreciate the work completed by Bryan and his company, My Guy.
Photos of My Guy Heating and Air (Firestone), 4321 Mulligan Street,  Longmont
All 32 photos

Hours

Monday 8AM - 5PM
Tuesday 8AM - 5PM
Wednesday 8AM - 5PM
Thursday 8AM - 5PM
Friday 8AM - 5PM
Saturday Closed
Sunday Closed

Good to know

  •  on-site services 
  • no online estimates
  • accepts credit cards
  • offers military discount

Location

4321 Mulligan Street, Longmont, CO 80504

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My Guy Heating and Air (Firestone) · 4321 Mulligan Street, Longmont, CO 80504

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