Contractors / Portsmouth, NH / Gas fitting

Gas fitters in Portsmouth, NH

Real permit activity. Real contractors. Ranked by volume.

87 gas fitting permits were filed in Portsmouth in the last 6 months. These 31 contractors filed them most often. Tap a name for their full permit history.

1. 1D.F. Ricahrd5 in last 90 days7
2. 2James Laurencio3 in last 90 days6
3. 3Hart Plumbing & Heating4 in last 90 days5
4. 4Pettigrew Plumbing & HVAC4 in last 90 days4
5. 5Atlantic Gas Techs LLC2 in last 90 days3
6. 5Baum Plumbing2 in last 90 days3
7. 5William Libby Sr1 in last 90 days3
8. 8Buchanan Waterworks1 in last 90 days2
9. 8Gerrys Gas Services Llc1 in last 90 days2
10. 8Robert W. Piersiak Plumbing & Heating1 in last 90 days2
11. 8DECCO, Inc.none in last 90 days2
12. 8ERIC DOUCETTE HVAC Servicesnone in last 90 days2
13. 8Greg Klingernone in last 90 days2
14. 8Perry Plumbing and Heatingnone in last 90 days2
15. 15ARM mechanical llc1 in last 90 days1
16. 15Atlantic p & h1 in last 90 days1
17. 15Broco Oil, Inc1 in last 90 days1
18. 15Diesel Direct LLC dba Atlantic Fuels1 in last 90 days1
19. 15Dowling Corporation1 in last 90 days1
20. 15Dylan Jordan1 in last 90 days1
21. 15East Coast Heating and Air Conditioning1 in last 90 days1
22. 15Enrico D'Renado1 in last 90 days1
23. 15Federal Piping Company Inc1 in last 90 days1
24. 15Mechanical Air of New England1 in last 90 days1
25. 15Superior Plus Propane1 in last 90 days1
26. 15Wsplumbing and heating1 in last 90 days1
27. 15A Spolidoro & Sons Incnone in last 90 days1
28. 15Aphnone in last 90 days1
29. 15Denron Plumbing &HVAC,LLCnone in last 90 days1
30. 15Eastern Propanenone in last 90 days1
31. 15William Martinnone in last 90 days1

Recent gas fitting permits in Portsmouth

1. Nov 6, 2026Gas piping system new homeWsplumbing and heating · Gas · 1 · #GAS-26-149
2. Nov 5, 2026Replace RTU with sameMechanical Air of New England · Gas · 1 · #GAS-26-146
3. Nov 5, 2026SETTING 2 120 TANKS AND CONNECTING TO STUBDylan Jordan · Gas · 1 · #GAS-26-147
4. Nov 2, 2026Install and connect gas line for generatorFederal Piping Company Inc · Gas · 1 · #GAS-26-145
5. Oct 30, 2026Replace portion of rotted gas pipe. Unitil has tagged out.Dowling Corporation · Gas · Complete · #GAS-26-144
6. Oct 28, 2026Installing six (6) 1000-gallon above ground propane tanks with (6) vaporizers and connecting to (14) contractor suppliedBroco Oil, Inc · Gas · 1 · #GAS-26-141
7. Oct 28, 2026Gas piping to (2) Rinnai tankless water heaters, (2) gas fireplace. Future outdoor gas appliances to be run underground Atlantic p & h · Gas · 1 · #GAS-26-142
8. Oct 27, 2026Gas has been off for 18 months, needs pressure test to have meter set and gas turned onHart Plumbing & Heating · Gas · 1 · #GAS-26-138
9. Oct 27, 2026Gas piping for new stoveBaum Plumbing · Gas · 1 · #GAS-26-139
10. Oct 27, 2026Converting from Propane to natural gas. The existing piping system is steel and is sized properly. There is an existing Pettigrew Plumbing & HVAC · Gas · Complete · #GAS-26-140

How gas fitting compares in Portsmouth

• Electricians · 43 contractors495
• HVAC contractors · 48 contractors353
• Building contractors · 45 contractors257
• Plumbers · 40 contractors233
• Site work contractors · 63 contractors131
• Roofing contractors · 32 contractors118
• Gas fitters · 31 contractors87
• Window & door contractors · 28 contractors40
• Deck & porch builders · 23 contractors25
• Insulation contractors · 6 contractors21

Other trades in Portsmouth

Gas fitters nearby

Source: Portsmouth OpenGov. Data updated Nov 13, 2026. A permit shows a job was filed with the town. It doesn’t show whether the work was finished or how it turned out. Rankings are by permit volume.