Directory / Portsmouth / HVAC
Denron Plumbing &HVAC,LLC
7 permits across 3 towns in the last 6 months
HVAC · Plumbing · Gas fitting
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Activity by month
Permits filed each month. The first and last months are partial.
Where they’re working
Permits filed under this contractor by state and town, last 6 months.
New Hampshire 7
Types of projects
By place, trade and period
| Town / city | State | Trade | Last 90 days | Last 6 months | All documented |
|---|---|---|---|---|---|
| Portsmouth | NH | HVAC | 3 | 3 | 3 |
| Merrimack | NH | HVAC | 1 | 1 | 1 |
| Merrimack | NH | Plumbing | 0 | 1 | 1 |
| Londonderry | NH | Gas fitting | 0 | 1 | 1 |
| Portsmouth | NH | Gas fitting | 0 | 1 | 1 |
Permit timeline
- Oct 5, 2026Replace current 75g gas HWT's with new similiar units and all required code items.Portsmouth · HVAC · Sheet metal · 1 · #MECH-26-533
- Oct 5, 2026Replace current 75g gas HWT with new similiar unt and all required code items.Portsmouth · HVAC · Sheet metal · 1 · #MECH-26-532
- Oct 1, 2026Replace chillerMerrimack · HVAC · Sheet metal · 1 · #MP-26-238
- Aug 17, 2026Installation of one new Mitsu hyper heat/cool ductless systemPortsmouth · HVAC · Sheet metal · Complete · #MECH-26-446
- Aug 3, 2026Building 12- Unit 312 40 gallon electric water heater replacementMerrimack · Plumbing · Plumbing · Complete · #PP-26-185
- Jul 20, 2026Install ERV/ELECTRIC HEATER, AND HEATING PANELS FOR NEW OFFICESLondonderry · Gas fitting · Mechanical/Gas Permit- NOT OIL - online · Permit Issued on 07/20/2026 · #2026-00000192
- Jul 2, 2026Install gas line and connect to outdoor appliances as well as NG Fireplaces in eache tenament and the amenities area as Portsmouth · Gas fitting · Gas · 1 · #GAS-26-78
Permit counts reflect permits filed in public town records naming this contractor as applicant. A permit shows permitted activity, not necessarily completed work, quality of work, or a final inspection.
License
We haven’t verified a state license for this name yet. We only show license details when we can match the record to this contractor with confidence. You can check directly at the New Hampshire Office of Professional Licensure and Certification (OPLC) license lookup.
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Sources
- Londonderry NH eSuite.Permits public search · retrieved Nov 13, 2026
- Merrimack OpenGov portal · retrieved Nov 13, 2026
- Portsmouth OpenGov portal · retrieved Nov 13, 2026
Not verified: contact info, business address, insurance, reviews. Page built Nov 13, 2026.