My Guy Heating and Air (Firestone)

HVAC contractor
4.9(1,037 reviews)
4321 Mulligan St, Longmont, CO 80504
My Guy Heating and Air (Firestone)

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About My Guy Heating and Air (Firestone)

My Guy Heating and Air has earned a 4.9-star rating across more than 1,000 customer reviews, establishing a strong reputation in Longmont and the surrounding Colorado communities. The company dispatches licensed technicians who serve residential clients throughout the area, handling everything from routine maintenance to complete system replacements. Multiple reviewers mention specific team members by name, including Park, Daniel, Bryan, Ivan, Carlos, and Leonard, suggesting a stable workforce with deep local roots.

What distinguishes this contractor is the consistency highlighted across numerous repeat customers. Reviewers repeatedly praise the team for arriving on time, explaining technical details in plain language, and treating homes with respect, one customer noted technicians even took out the trash after a furnace installation. The company handles both heating and cooling systems, with recent reviews referencing new furnace and air conditioning installations as well as winter maintenance services. Several customers mention receiving worthwhile recommendations during inspections, indicating the team prioritizes customer education over upselling.

A.J.C.'s January 2026 review describes Park and Daniel installing a new furnace and AC at a new residence, calling their work ethic top-notch and noting they answered every question with patience. The same reviewer also praised Bryan for winter maintenance, highlighting his thoroughness and knowledge.Mary Stoothoff's review mentions Park, Ivan, and Carlos for furnace diagnosis and replacement, specifically noting their politeness and the time taken to explain each step. Sheila Beades won a free system inspection through a raffle but still found the examination thorough with several worthwhile recommendations, crediting David's expertise.

What Customers Say

All six detailed reviews award 5 stars, with each reviewer voluntarily naming specific technicians, Bob, David, Park, Daniel, Bryan, Ivan, and Carlos, as evidence of the personal relationships built over multiple service encounters. Customers consistently mention professionalism, patience, and thorough explanations as recurring themes across positive experiences.

4.9 · 1,037 reviews
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Working Hours

SundayClosed
Monday8 AM–8 PM
Tuesday8 AM–8 PM
Wednesday8 AM–8 PM
ThursdayToday8 AM–8 PM
Friday8 AM–8 PM
SaturdayClosed

Services

Furnace Installation & Replacement

Complete furnace replacement with new unit installation, performed by licensed technicians who explain each step and answer questions.

Air Conditioning Installation

New AC system installation for residential homes, with teams that work neatly and respect the homeowner's property.

Heating System Maintenance

Winter furnace maintenance and tune-ups, including thorough inspections and diagnostic assessments of system performance.

AC Repair & Maintenance

Air conditioning repair services and seasonal maintenance to ensure cooling systems operate efficiently before summer.

System Inspections

Comprehensive system inspections with detailed recommendations, reviewers note receiving multiple worthwhile options to consider.

Emergency HVAC Service

Same-day response for heating and cooling emergencies, with technicians who arrive promptly and diagnose issues thoroughly.

Frequently Asked Questions