
Derry NH Heating and Cooling, Licensed for Gas and for Oil
Yes, Derry is covered, in every part of town. Derry borders Windham to the north and it is the largest of the neighbouring towns, which makes it one of the busiest service areas on the list.

Derry, NH
What the houses in Derry are actually running
Derry sits directly north of Windham, a short run up Route 28 or across through the back roads.
Derry has the widest range of housing stock of any town on this list. The streets around downtown carry early 1900s houses and two and three family properties, many with old cast iron boilers and steam or gravity systems that were converted decades ago.
East of downtown, out toward Beaver Lake and English Range Road, the housing turns into 1980s through 2000s subdivisions, mostly forced air with ductwork already run.
Fuel is genuinely mixed. Natural gas reaches parts of the downtown corridor, while a lot of the outlying neighbourhoods are on oil or propane with tanks in the basement or beside the house.
Exit 4 off I-93 makes Derry a heavy Boston and Manchester commuter town, and the Exit 4A work has kept building activity high on the Londonderry side.

What comes up most
Derry calls, and what they usually need
Derry's older housing is where the repair before replacement question comes up most, because a 1920s house with a 30 year old boiler gets quoted for a replacement more often than it actually needs one.
Mini Splits in Derry
Heating and cooling for the room that never gets it right
See the detailHeat Pumps in Derry
One system, both seasons, off the oil truck
See the detailBoilers & Furnaces in Derry
Gas and oil, installed and repaired, all makes and models
See the detailCleaning & Maintenance in Derry
The yearly hour that prevents the February phone call
See the detail
Asked in Derry
Questions that come from this town
- My Derry house has an old boiler and I was quoted a replacement. Can I get a second opinion?
- Yes, and that is a normal thing to ask for. Bring the quote. Plenty of the boilers in Derry's older housing have years of service left and the actual failure is a control, a circulator or an aquastat. If the answer really is replacement, you will hear that too, with the reason.
- Do you service two and three family homes in Derry?
- Yes. Multi unit residential around downtown Derry is common and the systems in them, often multiple boilers or multiple zones off one, are familiar work.
- Is natural gas available in Derry?
- In parts of it. The downtown corridor has gas service in places, while much of the outlying town runs on oil or propane. Both fuels are covered under separate state licenses, so the answer to that question does not change who you can call.
Inside the service area
Derry, NH is served from Windham by Brian Chesney, the owner and licensed technician who does the work himself.
Directly north of Windham, up Route 28 or across the back roads.
- NH gas license
- GF1910596
- NH oil heating license
- HT2300476
- Emergency service
- 24 hours, every day of the year
Tell me what your system is doing.
Send the details and Brian reads them himself. Free estimates on installations and replacements, straight answers on repairs, and the same person on the phone as in your basement.
- 24
- Years in the trades
- 8
- Years in HVAC
- 6
- Years co-owning an oil company
- 3
- Licenses and certifications