Updated: Jul 25, 2025
Location and Projects
Address
42 Southgate Blvd, New Castle, DE, 19720
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National HVAC Service, Ltd
Their BuildZoom score of 105 ranks in the top 8% of 8,071 Delaware licensed contractors.
If you are thinking of hiring National HVAC Service, Ltd, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
National HVAC Service, Ltd Contact Information
Phone Number: (302) 323-1776
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Address: 42 Southgate Blvd, New Castle, DE 19720
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Building Permits by National HVAC Service, Ltd
This is a sample of this contractor's permits. Click here to access their complete permit history.
Plumbing - underground rough - above rough - relocation fixtures - medical gas installation - demolish out old piping - get piping up to code - new bfp - owner supplied fixtures
Valuation:
N/A
Permit #:
202402250
Status:
final
Fee:
$722
Permit Type:
N/A
Building Type:
Commercial
Tenant fitout for morris james. installation of air handlers refrigerant piping duct and diffusers on 6 floors
Valuation:
N/A
Permit #:
202416495
Status:
final
Fee:
$4,815
Permit Type:
N/A
Building Type:
Commercial
Willowbrooke renovation - demolish existing ductwork in office area. fabricate and install new ductwork. supply & install new grd's. certified air balancing
Valuation:
N/A
Permit #:
202400966
Status:
final
Fee:
$552
Permit Type:
N/A
Building Type:
Exempt residential
Provide a plumbing rough-in. includes underground 3 single bathrooms 1 breakroom 2 water heaters 1 40 gal 1 point of use
Valuation:
N/A
Permit #:
202414311
Status:
final
Fee:
$457
Permit Type:
N/A
Building Type:
Residential
Install a split system for the elevator room/heat pump model-johnson controls-dhp36nwb21s. like for like replacement
Valuation:
N/A
Permit #:
202412127
Status:
final
Fee:
$132
Permit Type:
N/A
Building Type:
Exempt residential
Install 3 new package units (rtu's) new supply & return ductwork new exhaust fans & rgd's. install 3 ton split system
Valuation:
N/A
Permit #:
202402770
Status:
final
Fee:
$1,418
Permit Type:
N/A
Building Type:
Commercial
Install new registers grilles & diffusers. install in-line fan and dryer vent. relocate t-stats
Valuation:
N/A
Permit #:
202303638
Status:
final
Fee:
$126
Permit Type:
N/A
Building Type:
Residential
Kitchen sink is moving over 4 from original spot. extend rough over and set owner supplied sink and faucet
Valuation:
N/A
Permit #:
202412117
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Exempt commercial
Relocate sinks - addition new locations for sinks - rough in underground - relocate water lines
Valuation:
N/A
Permit #:
202412371
Status:
final
Fee:
$279
Permit Type:
N/A
Building Type:
Commercial
Plumbing work for interior fit out. relocation of interior plumbing lines due to wall changes
Valuation:
N/A
Permit #:
202400891
Status:
final
Fee:
$279
Permit Type:
N/A
Building Type:
Exempt residential
Install new rgd's exhaust fans ductless split systems & air balancing
Valuation:
N/A
Permit #:
202301180
Status:
final
Fee:
$247
Permit Type:
N/A
Building Type:
Commercial
Removing existing boiler & installing 2- weil mcclain m-750
Valuation:
N/A
Permit #:
202305647
Status:
issued
Fee:
$907
Permit Type:
N/A
Building Type:
Commercial
Breakroom sink - with lift pump and 6 - gallon water heater
Valuation:
N/A
Permit #:
202306315
Status:
final
Fee:
$65
Permit Type:
N/A
Building Type:
Commercial
Demo-rough in for urinal new plumbing fixtures for the restrooms new electric hw
Valuation:
N/A
Permit #:
202411053
Status:
final
Fee:
$126
Permit Type:
N/A
Building Type:
Industrial
Installing new vav box and duct. installing exhaust fan. installing existing diffusers
Valuation:
N/A
Permit #:
202201458
Status:
final
Fee:
$147
Permit Type:
N/A
Building Type:
Residential
Replace like for like hvac rtu's boiler including pumps and controls hv ex fan
Valuation:
N/A
Permit #:
202110951
Status:
final
Fee:
$6,895
Permit Type:
N/A
Building Type:
Residential
Relocate rgd's & t-stats install new exhaust fan
Valuation:
N/A
Permit #:
202306368
Status:
final
Fee:
$74
Permit Type:
N/A
Building Type:
Commercial
Plumbing for sink and fixture change out (phase 2)
Valuation:
N/A
Permit #:
202301898
Status:
final
Fee:
$79
Permit Type:
N/A
Building Type:
Commercial
Install one ada restroom one water cooler. *(rev.10/7/2021: revise permit to include installation of exhaust fan.)*
Valuation:
N/A
Permit #:
202114028
Status:
final
Fee:
$140
Permit Type:
N/A
Building Type:
Industrial
Replace like for like 40 ton air cooled chiller
Valuation:
N/A
Permit #:
202304319
Status:
final
Fee:
$780
Permit Type:
N/A
Building Type:
Commercial
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National HVAC Service, Ltd License info
License Not Verified
| License # | DE1997111768 |
| Status | Active |
| State | Delaware |
| Type | Heating And Air Conditioning |
- When BuildZoom last verified this license, it had an expiration date of December, 2010. Check the current license status of National HVAC Service, Ltd with the State of Delaware
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 1997111768 |
| Status | Inactive |
| State | Delaware |
- According to the State of Delaware, 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 National HVAC Service, Ltd at the State of Delaware.
This is a sample of licensing data; click here to access a complete history.
105
BuildZoom Score
140
Permits
- Building permit records show that National HVAC Service, Ltd has worked on 140 permitted projects.
National HVAC Service, Ltd Employees
JN
Jay Noel
President Ceo