Updated: Jan 25, 2026
Location and Projects
Address
212 EAST ST #317, Covina, CA, 91723
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Marathon HVAC Service Inc
Marathon HVAC Service Inc at 212 EAST ST #317, Covina, CA 91723, held a HVAC/Mechanical Contractor license (#688307) with the California contractors license board with an expiration date of 11-30-2025. We last verified the license was expired on 01-24-2026.
Their BuildZoom score is 0 because we haven’t been able to verify an active license. As a result, they’re not ranked in the top 50% of 336,931 California contractors.
If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our bidding system to be easily matched to qualified, licensed professionals in your area.
Marathon HVAC Service Inc Contact Information
Phone Number: (626) 338-1511
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Address: 212 EAST ST #317, Covina, CA 91723
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Marathon HVAC Service Inc Covina
Quality
Alert*
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
*No active license on file. If you are Marathon HVAC Service Inc, click “This is My Business” to update your information.
Activity
|
9 projects
|
2025 |
|
35 projects
|
2024 |
|
25 projects
|
2023 |
Our building permit records indicate that Marathon HVAC Service Inc has worked on at least
69.0 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
|
67 projects
|
HVAC projects |
|
8 projects
|
Mechanical projects |
Analyzing permits over the last 4 years shows that Marathon HVAC Service Inc mostly works on
hvac project
and mechanical project
projects.
Pricing
|
2 projects
|
$5k-$20k |
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 Marathon HVAC Service Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Mount 12 000 btu air handler in network room holes for lineset and communication run line side from indoor unit through the third floor through the attic up onto rough run electrical from junction box to service mini split system bring mini split condenser up on top of roof place condenser or condenser pad install quick disconnect run electrical from disconnect to condenser connect al... see more
Valuation:
N/A
Permit #:
24044-90000-15692
Status:
issued
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
1) remove heat pump unit on roof top 2) install new heat pump unit in same location 3) install new thermostat 4) adaptation to ductwork 5)adaptation quick disconnect and whip 6) provided crane to remove old unit and re install new heat pump in same location 7) seal all outdoor plenums 8) adaptation to control wire 9)adaptation to drain line 10 )start up and test new heat pump to work ... see more
Valuation:
N/A
Permit #:
24044-90000-13967
Status:
issued
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
-install new factory roof curb in roof and have roofers roof in -install new supply and return air plenums -crane new 3 ton 14 seer condenser heat pump on roof and set on roof curb. -install new fusible disconnect switch with liquid tight. - install all new class 1 flexible ducts with dampers in all duct connections to balance air flow to all vents -cut new supply air vents 1 in each ... see more
Valuation:
N/A
Permit #:
23044-90000-26256
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Remove existing system from home. install new curb and plenums on roof. crane and set new unit onto curb. modify and hook up electrical. replace all accessible ducting in attic and connect to new plenums. install new thermostat. start up and check for proper operation
Valuation:
N/A
Permit #:
23044-90000-15995
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
(e-plan) move existing system from home. cut in new attic access. hang now air handler in attic using uni-strut and threaded rod. set condenser on side ol garage. run new refrigerant lines connecting air handler to condenser. install 2-zono zoning system and all new accessible ducting in attic. install new thermostat. required electrical not included
Valuation:
$17,749
Permit #:
MEC-2023-01144
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove existing system and accessible ducting from home. hang new air handler coil and plenums in attic using uni-strut and threaded rod. set condenser in existing location allowing for as much air flow as possible. replace all accessible ducting in attic. install new thermostat
Valuation:
N/A
Permit #:
23044-90000-17397
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Remove existing unit and ducting from the roof. install new curb over existing flashing. install new plenums in curb. crane and set new unit onto curb. modify and hook up ducting to new plenums. enlarge return air to allow unit to breath. start up and check for proper operation
Valuation:
N/A
Permit #:
23044-90000-15741
Status:
expired
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Changeout (3) air conditioning units and condensers outside like for like same location. state of california energy commission: central air conditioner or furnace installed or replaced must have ducts inspected for leaks. hvac must meet state of california energy requirements
Valuation:
N/A
Permit #:
MEC-2023-01520
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Whole house purification system option: - #1 rated air purifier/air cleaner filtration system. - filters 99.98% of allergy asthma and viral air pollutants down to 003 microns. - lifetime warranty. - filters last up to 3 years. - extends life of equipment. - medical grade filtration
Valuation:
N/A
Permit #:
23044-90000-27781
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
* remove existing system from home and recycle * install four new air handlers in existing location * install four new coils in existing location * install three new xv19 3 ton condensers * install one new xv19 4 ton condenser * modify refrigerant and low voltage lines and connect to new system. * install four new 850 trane thermostat * replace two 14x6 supply grilles to curb blade * ... see more
Valuation:
N/A
Permit #:
23044-90000-27628
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Removal and replacement of (2) units - downstairs: remove existing system from home. install new air handler and coil in closet. set condenser on side of home. hook up refrigerant and electrical lines. install new thermostat. start up and check for proper operation. upstairs: remove existing system from home. hang new air handler coil and plenums in attic using uni-strut and threaded ... see more
Valuation:
N/A
Permit #:
MEC-2023-01448
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install (1) 3 ton heat pump on roof adapting to existing communication wire and electrical install air handler adapting to existing communication wire electrical in line set
Valuation:
N/A
Permit #:
24044-10000-11006
Status:
issued
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Permit to remove and replace a 7.5 ton packaged hvac unit on a commercial building; no ductwork. all work to be like for like on same location
Valuation:
N/A
Permit #:
MECH-24-00097
Status:
issued
Fee:
$196
Permit Type:
N/A
Building Type:
N/A
Remove existing system from home. install new air handler and coil in closet. crane and set new condenser in roof. modify and hook up existing refrigerant and electrical lines
Valuation:
N/A
Permit #:
23044-90000-16591
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Remove and replace two furnaces same location in attic
Valuation:
N/A
Permit #:
H2025-0148
Status:
final
Fee:
$62
Permit Type:
N/A
Building Type:
N/A
Remove and replace two furnaces same location in attic
Valuation:
N/A
Permit #:
H2025-0147
Status:
applied
Fee:
$62
Permit Type:
N/A
Building Type:
N/A
Residential: install (1) 3 ton heat pump condenser and (1) air handler in attic. also installing class 1 flexible ducts with dampers
Valuation:
N/A
Permit #:
B24-1172
Status:
final
Fee:
$591
Permit Type:
N/A
Building Type:
N/A
Residential - (2) split system heat pump systems. includes (1) 4 ton condenser and (1) 5 ton condensers and (2) air handlers
Valuation:
N/A
Permit #:
24044-90000-07252
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Residential - install (1) 3 ton heat pump and air handler. install (8) new runs r6 insulated flexible duct work in attic
Valuation:
N/A
Permit #:
24044-90000-10727
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Install (1) 5 ton heat pump evap coil and air handler. install (1) 4 ton heat pump evap coil and air handler
Valuation:
N/A
Permit #:
24044-90000-10984
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
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Marathon HVAC Service Inc Reviews
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Marathon HVAC Service Inc License info
Inactive License
| License # | 688307 |
| Status | Inactive |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning, Plumbing |
| Business Type | Corporation |
- According to the California Contractors State License Board, 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 Marathon HVAC Service Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
- How the BuildZoom Score works
- *No active license on file. If you are Marathon HVAC Service Inc, click “This is My Business” to update your information.
Insured
| Insurer | Continental Casualty Company |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Wesco Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Middlesex Insurance Company |
290
Permits
- Building permit records show that Marathon HVAC Service Inc has worked on 290 permitted projects.
Marathon HVAC Service Inc Employees
PD
Paul Lewis Davidson
Rmm
RM
Raymond Martinez
Rmo/Ceo/Pres