Updated: Jul 06, 2026
Location and Projects
Address
4321 Mulligan St, Longmont, CO, 80504
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My Guy Heating and Air Photos
My Guy Heating and Air
My Guy Heating and Air is a trusted HVAC company serving homeowners and businesses in Longmont, CO. We specialize in heating and air conditioning installation, repair, and maintenance, delivering reliable comfort solutions year-round. From furnace repairs and AC replacements to seasonal tune-ups and energy-efficient upgrades, our skilled technicians focus on honest service, quality workmanship, and customer satisfaction. When you need dependable HVAC service done right the first time, My Guy Heating and Air is the local team you can count on. Contact us today to schedule all types of Heating and Cooling services in Longmont, CO.
From BuildZoom: My Guy Heating and Air, 4321 Mulligan St, Longmont, CO (Owned by: Leonard Wilson) holds a Mechanical license and 9 other licenses according to the Boulder license board.
Their BuildZoom score of 111 ranks in the top 4% of 55,949 Colorado licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring My Guy Heating and Air, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
My Guy Heating and Air Contact Information
Phone Number: (303) 827-1025
Address: 4321 Mulligan St, Longmont, CO 80504
My Guy Heating and Air Longmont
Quality
111
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
My Guy Heating and Air has a BuildZoom score of 111, which places them above 96% of 55,949 contractors in Colorado.
Activity
|
1 project
|
2026 |
|
101 projects
|
2025 |
|
69 projects
|
2024 |
|
24 projects
|
2023 |
Our building permit records indicate that My Guy Heating and Air has worked on at least
195.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
12 projects
|
Home Additions |
|
183 projects
|
HVAC projects |
|
18 projects
|
Mechanical projects |
Analyzing permits over the last 4 years shows that My Guy Heating and Air mostly works on
hvac project
and mechanical project
projects.
Pricing
|
7 projects
|
< $5k |
|
98 projects
|
$5k-$20k |
|
12 projects
|
$20k-$50k |
|
1 project
|
$50k-$100k |
The typical size of their permits is approximately $10,299. This graph shows the distribution of these job values.
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
Building Permits by My Guy Heating and Air
This is a sample of this contractor's permits. Click here to access their complete permit history.
Replace 3 furnaces 3 air conditioning units. must comply with 2021 irc 2021 ipc and 2023 nec. work is subject to field inspections. inspections will not be performed unless all permit documentation is printed out and on site. inspections will not be performed unless all installation manuals are provided on site
Valuation:
N/A
Permit #:
BP-24-05141
Status:
complete
Fee:
$1,157
Permit Type:
N/A
Building Type:
N/A
Disconnect and remove the existing furnace and air conditioning system and install new equipment furnace: 97% afue 40k btu heat pump: 2.5 ton 14 seer2
Valuation:
$15,000
Permit #:
B202500239
Status:
complete
Fee:
$404
Permit Type:
N/A
Building Type:
N/A
Disconnect and remove the existing furnace and air conditioning system and install new equipment furnace: 97% afue 80k btu a/c: 3 ton 16 seer2
Valuation:
$19,705
Permit #:
B202500963
Status:
complete
Fee:
$515
Permit Type:
N/A
Building Type:
N/A
Disconnect and remove the existing furnace and air conditioning system and install new equipment. furnace: 100k btu 80% afue a/c: 3.5 ton 14 seer2
Valuation:
$13,673
Permit #:
B202500619
Status:
complete
Fee:
$372
Permit Type:
N/A
Building Type:
N/A
Replace air conditioning. must comply with 2021 irc 2021 ipc and 2023 nec. work is subject to field inspections. inspections will not be performed unless all permit documentation is printed out and on site. inspections will not be performed unless all installation manuals are provided on site
Valuation:
N/A
Permit #:
BP-24-03768
Status:
complete
Fee:
$239
Permit Type:
N/A
Building Type:
N/A
Replace furnace and air conditioning. must comply with 2021 irc 2021 ipc and 2023 nec. work is subject to field inspections. inspections will not be performed unless all permit documentation is printed out and on site. inspections will not be performed unless all installation manuals are provided on site
Valuation:
N/A
Permit #:
BP-24-01163
Status:
complete
Fee:
$226
Permit Type:
N/A
Building Type:
N/A
Disconnect and remove the existing furnace and air conditioning system and install new equipment. furnace: 97% afue 100k btu a/c: 4 ton 14 seer2
Valuation:
N/A
Permit #:
MEC2024-01959
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Disconnect and remove the existing furnace and air conditioning system and install new equipment. furnace: 97% afue 60k btu a/c: 14 seer 2 ton
Valuation:
N/A
Permit #:
MEC2025-00186
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace existing furnace & air conditioning with new. like for like furnace: 80% afue 80k btu a/c: 3.5 ton 14 seer
Valuation:
$12,000
Permit #:
B202503029
Status:
complete
Fee:
$333
Permit Type:
N/A
Building Type:
N/A
Replace existing furnace & air conditioning with new a/c: xv20i 20.5 seer2 4 ton furnace: 96% afue 120k btu
Valuation:
$27,338
Permit #:
B202502072
Status:
complete
Fee:
$695
Permit Type:
N/A
Building Type:
N/A
Air conditioner with or without furnace (residential)
2024-10-11
Disconnect and remove the existing furnace and air conditioning system and install new equipment like for like. furnace: 80k btu 80% afue a/c: 3 ton 14 seer
Valuation:
$10,500
Permit #:
24-001333
Status:
issued
Fee:
$418
Permit Type:
N/A
Building Type:
N/A
Remove and replace drywall upgrade electrical new air conditioning minor plumbing new hardwood paint kitchen cabinets and appliances
Valuation:
$60,000
Permit #:
B202406984
Status:
issued
Fee:
$4,057
Permit Type:
N/A
Building Type:
N/A
Replace existing furnace & air conditioning with new furnace: 60k btu 80% afue ac: 2.5 ton 14 seer
Valuation:
$15,499
Permit #:
B202503185
Status:
complete
Fee:
$415
Permit Type:
N/A
Building Type:
N/A
Air conditioning furnace/boiler water heater heat pump
2025-07-11
Replace existing furnace and air conditioning with new. furnace: 97% afue 80k btu hp: 3 ton 18 seer
Valuation:
$22,199
Permit #:
MEP-6346-2025
Status:
final
Fee:
$969
Permit Type:
N/A
Building Type:
N/A
Replace existing furnace and air conditioning with new furnace: 60k btu 80% a/c: 2.5 tn 14 seer
Valuation:
$17,999
Permit #:
B202502323
Status:
complete
Fee:
$474
Permit Type:
N/A
Building Type:
N/A
Replace existing furnace and air conditioning with new. furnace: 97% afue 60k btu heat pump: 18seer 3 ton
Valuation:
N/A
Permit #:
MEC2025-00448
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Disconnect and remove the existing air conditioning unit and install new equipment. 14 seer 2.5 ton
Valuation:
N/A
Permit #:
MEC2025-00698
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Disconnect and remove the existing furnace and install new equipment. like for like. 80% afue 45k btu
Valuation:
N/A
Permit #:
MEC2025-00189
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Disconnect and remove the existing air conditioning unit and install new equipment. 14 seer 2 ton
Valuation:
N/A
Permit #:
MEC2025-00668
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Disconnect and remove the existing furnace and install new equipment. 40k btu furnace 80% afue
Valuation:
N/A
Permit #:
MEC2025-00129
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
My Guy Heating and Air Reviews
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Verified License
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My Guy Heating and Air License info
Verified License
| License # | LIC-01005159 |
| Status | Active |
| City | Boulder |
| Type | Mechanical |
| Class | Class A All Mechanical Work |
| Date Issued | 03-16-2026 |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for My Guy Heating and Air at the Boulder Licensing Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 2403578 |
| Status | Active |
| City | Westminster |
| Type | General Contractor |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for My Guy Heating and Air at the City of Westminster, Colorado.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 21-002425 |
| Status | Active |
| City | Lafayette |
| Type | Mechanical Contractor |
- When BuildZoom last verified this license, it had an expiration date of May, 2026. Check the current license status of My Guy Heating and Air with the City of Lafayette
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | H-2304(RR) |
| Status | Active |
| City | Fort Collins |
| Type | Sub Contractor |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for My Guy Heating and Air at the City of Fort Collins.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | AEC9298 |
| Status | Active |
| City | Arvada |
| Type | Contractor |
- When BuildZoom last verified this license, it had an expiration date of July, 2026. Check the current license status of My Guy Heating and Air with the The City of Arvada, Colorado
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | LCC202100195 |
| Status | Active |
| City | Thornton |
| Type | Class D Mechanical Expires 2026 06 20 Class D Mechanical Expires 2027 06 20 |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for My Guy Heating and Air at the Thornton City Development Contractor License.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | CL3228 |
| Status | Active |
| County | Larimer County, Co |
| Type | Mechanical Commercial |
| Class | Commercial |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for My Guy Heating and Air at the Larimer County.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | CON-20-0059 |
| Status | Active |
| County | Boulder County |
| Type | Residential Mechanical Installations And Repair |
- BuildZoom verified this license was active as of November 2025.
Verify this license's status for My Guy Heating and Air at the Boulder County Land Use Department.
This is a sample of licensing data; click here to access a complete history.
License Not Required
| Status | Not Required |
- BuildZoom verified in November, 2021 that this contractor does not need a license to be a contractor in Colorado.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | MEC2702425 |
| Status | Active |
| City | Lafayette |
| Type | Mechanical Contractor |
- When BuildZoom last verified this license, it had an expiration date of May, 2022. Check the current license status of My Guy Heating and Air with the City of Lafayette
This is a sample of licensing data; click here to access a complete history.
111
BuildZoom Score
Insured
| Insurer | Midvale Ind., Pinnacol |
243
Permits
- Building permit records show that My Guy Heating and Air has worked on 243 permitted projects.
My Guy Heating and Air Employees
LW
Leonard Wilson
Owner