Strogen's Service Experts
8 permits across 2 towns in the last 6 months
HVAC · Plumbing
Business contact from Portsmouth OpenGov record (signed-in), checked Nov 13, 2026. Not from permit records.
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.
NH 8
Types of projects
By place, trade and period
| Town / city | State | Trade | Last 90 days | Last 6 months | All documented |
|---|---|---|---|---|---|
| Dover | NH | HVAC | 0 | 4 | 4 |
| Portsmouth | NH | HVAC | 2 | 3 | 3 |
| Portsmouth | NH | Plumbing | 1 | 1 | 1 |
Permit timeline
- Oct 28, 2026Furnace replacement - Thermo Pride OME-72D36Portsmouth · HVAC · Sheet metal · 1 · #MECH-26-592
- Oct 22, 2026Boiler replacement - Brute combi boiler/tankless water heaterPortsmouth · HVAC · Sheet metal · 1 · #MECH-26-581
- Oct 19, 2026Replace existing 50-gallon indirect-fired water heater with like-for-like unitPortsmouth · Plumbing · Plumbing · 1 · #PLMB-26-389
- Jul 29, 2026Replace existing 40-gallon electric water heater with a new 40-gallon skinny electric unit; no structural change.Dover · HVAC · Mechanical - Climate Control (Oil, Gas, Exhaust, Ventilation) · Issued · #MECH-2026-0484
- Jul 10, 2026Remove existing system and install new hydro-coil air handler, matching 2-stage condenser, and April Aire humidifier witDover · HVAC · Mechanical - Climate Control (Oil, Gas, Exhaust, Ventilation) · Complete · #MECH-2026-0429
- Jun 4, 2026HVAC replacement- current unit with Lennox ML14KC1 single-stage air conditioning condensers, each 2.5 tonsDover · HVAC · Mechanical - Climate Control (Oil, Gas, Exhaust, Ventilation) · Complete · #MECH-2026-0325
- Jun 4, 2026Boiler replacement- combi boiler (Bradford White)Dover · HVAC · Mechanical - Climate Control (Oil, Gas, Exhaust, Ventilation) · Complete · #MECH-2026-0324
- Jun 3, 2026HVAC replacement. 2 new Lennox- ML14KP1-024-230 heat pump systems 1 in 18 Raleigh Way and the other in 20 Raleigh WayPortsmouth · HVAC · Sheet metal · Complete · #MECH-26-306
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
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Sources
- Dover NH EnerGov Civic Self Service · retrieved Nov 13, 2026
- Portsmouth OpenGov portal · retrieved Nov 13, 2026
Not verified: contact info, business address, insurance, reviews. Page built Nov 13, 2026.