Updated: Jul 14, 2026
Location and Projects
Address
13858 N 75th St, Longmont, CO, 80503
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Evolve Solar & Radiant Heat
Evolve Solar & Radiant Heat, 13858 N 75th St, Longmont, CO (Owned by: Raimund Rapf) holds a Commercial Mechanical Installations And Repair license and 5 other licenses according to the Boulder County license board.
Their BuildZoom score of 94 ranks in the top 24% of 55,949 Colorado licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Evolve Solar & Radiant Heat, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Evolve Solar & Radiant Heat Contact Information
Phone Number: (303) 502-4404
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Address: 13858 N 75th St, Longmont, CO 80503
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Evolve Solar & Radiant Heat Reviews
5 out of 5 stars, based on
1
review
-
By Sandy M.January 17, 2019Fix Boiler
Building Permits by Evolve Solar & Radiant Heat
This is a sample of this contractor's permits. Click here to access their complete permit history.
Replace boiler & radiant heat baseboards
Valuation:
$35,000
Permit #:
BP-22-2130
Status:
complete
Fee:
$739
Permit Type:
N/A
Building Type:
N/A
Replace boiler & radiators
Valuation:
$35,000
Permit #:
B202000508
Status:
complete
Fee:
$830
Permit Type:
N/A
Building Type:
N/A
Installation of a replacement 96k btu 98% efficient gas fired hot water boiler. installation per manufacturer's specifications
Valuation:
N/A
Permit #:
MEC2018-00063
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace boiler
Valuation:
$19,000
Permit #:
BP-20-0139
Status:
complete
Fee:
$452
Permit Type:
N/A
Building Type:
N/A
Installation of a replacement gas fired hot water boiler 125k btu 95% afue
Valuation:
N/A
Permit #:
MEC2018-01256
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical permit to replace two boilers to service an existing in-floor radiant heat system, and an under-slab radiant heating system (under driveway), respectively. scope also includes 280 sf of added underslab snowmelt area
Valuation:
$0
Permit #:
PMT2015-02759
Status:
Issued
Fee:
N/A
Permit Type:
Residential
Building Type:
Single Family Det...
Mechanical permit to replace two boilers to service an existing in-floor radiant heat system and an under-slab radiant heating system (under driveway) respectively. scope also includes 280 sf of added underslab snowmelt area
Valuation:
N/A
Permit #:
PMT2015-02759-MEC
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel of the existing home. scope of work is for interior remodeling and window and door replacement. work is for 2, 338 sq. ft. and includes associated meps
Valuation:
N/A
Permit #:
PMT2014-02990
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installation of a replacement boiler water/heater comb unit (replaces existing boiler and water heater) for baseboard heat and water supply 125, 000 btu 95% efficiency
Valuation:
N/A
Permit #:
PMT2017-02973
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
Single family det...
Installation of a replacement boiler water/heater comb unit (replaces existing boiler and water heater) for baseboard heat and water supply 125, 000 btu 95% efficiency
Valuation:
N/A
Permit #:
PMT2017-02973-MEC
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel of the existing home. scope of work is for interior remodeling and window and door replacement. work is for 2, 338 sq. ft. and includes associated meps
Valuation:
N/A
Permit #:
PMT2014-02990-MEC
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel of the existing home. scope of work is for interior remodeling and window and door replacement. work is for 2, 338 sq. ft. and includes associated meps
Valuation:
N/A
Permit #:
PMT2014-02990-PLB
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remodel of the existing home. scope of work is for interior remodeling and window and door replacement. work is for 2, 338 sq. ft. and includes associated meps
Valuation:
N/A
Permit #:
PMT2014-02990-ELE
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install boiler retrofit radiant in floor & indirect water heater
Valuation:
$30,000
Permit #:
BP-19-0880
Status:
complete
Fee:
$656
Permit Type:
N/A
Building Type:
N/A
New direct-vent boiler and indirect vent water heater with seven new radiators.
Valuation:
$0
Permit #:
PMT2013-05466
Status:
Issued
Fee:
N/A
Permit Type:
Residential
Building Type:
Single Family Det...
Mechanical permit for replacement boiler in sfd
Valuation:
$0
Permit #:
PMT2014-04716
Status:
Issued
Fee:
N/A
Permit Type:
Residential
Building Type:
Single Family Det...
Replace water damaged boiler and indirect hot water heater.
Valuation:
$0
Permit #:
PMT2013-06146
Status:
Issued
Fee:
N/A
Permit Type:
Residential
Building Type:
Multifamily Dwell...
New direct-vent boiler and indirect vent water heater with seven new radiators
Valuation:
N/A
Permit #:
PMT2013-05466-MEC
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mechanical permit for replacement boiler in single family dwelling
Valuation:
N/A
Permit #:
PMT2014-04716-MEC
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replacement forced-air furnace in existing sfd.
Valuation:
$0
Permit #:
PMT2013-05067
Status:
Issued
Fee:
N/A
Permit Type:
Residential
Building Type:
Single Family Det...
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Verified License
BuildZoom confirmed this contractor's license
Evolve Solar & Radiant Heat License info
Verified License
| License # | CON-19-0049 |
| Status | Active |
| County | Boulder County |
| Type | Commercial Mechanical Installations And Repair |
- BuildZoom verified this license was active as of November 2025.
Verify this license's status for Evolve Solar & Radiant Heat at the Boulder County Land Use Department.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | LIC-0010252-MECHA |
| Status | Active |
| City | Boulder |
| Type | Mechanical |
| Class | Class A All Mechanical Work |
| Date Issued | 06-30-2026 |
- BuildZoom verified this license was active as of July 2026.
Verify this license's status for Evolve Solar & Radiant Heat at the Boulder Licensing Board.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | MEC6502350 |
| Status | Active |
| City | Lafayette |
| Type | Mechanical Contractor |
- When BuildZoom last verified this license, it had an expiration date of April, 2022. Check the current license status of Evolve Solar & Radiant Heat with the City of Lafayette
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | LIC-0010252 |
| Status | Active |
| City | Boulder |
| Type | Mechanical |
| Class | Class A All UMC Work |
- When BuildZoom last verified this license, it had an expiration date of December, 2018. Check the current license status of Evolve Solar & Radiant Heat with the Boulder Licensing Board
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 0010252 |
| Status | Active |
| City | Boulder |
| Type | Mechanical Class A All Umc Work |
- When BuildZoom last verified this license, it had an expiration date of May, 2015. Check the current license status of Evolve Solar & Radiant Heat with the Boulder Licensing Board
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 21-002350 |
| Status | Inactive |
| City | Lafayette |
| Type | Mechanical Contractor |
- According to the City of Lafayette, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Evolve Solar & Radiant Heat at the City of Lafayette.
This is a sample of licensing data; click here to access a complete history.
94
BuildZoom Score
14
Permits
- Building permit records show that Evolve Solar & Radiant Heat has worked on 14 permitted projects.
Evolve Solar & Radiant Heat Employees
RR
Raimund Rapf
Owner
* Great Person
* High Integrity
* Super Knowledgeable
* Patient and Helpful
* Super Focused on Top Notch Quality
I cannot recommend Raimund highly enough! My boiler had stopped working, an inconvenient situation made horrible by a nightmare experience with another service company. Raimund came up to my mountain home (thank you for including mountain residents as customers!), assessed the problem in detail, and concluded that replacing one part would be a viable and acceptable short-term solution, which for many reasons, was my preferred option.
He also provided an assessment of the (original) boiler room layout, the specific challenges of installing modern boiler technology in that constrained space, and several detailed options for replacing the boiler. Based on his patient explanations on the many aspects of selecting and installing a new boiler, I am now educated sufficient to make sound decisions on the long-term, much more involved solution.
Raimund IS what great customer service is supposed to be!