HVAC, Plumbing & Electrical in Durham, NH

A tidal Seacoast town where the Oyster River meets Great Bay

Durham sits on New Hampshire's Seacoast, at the point where the Oyster River winds down through the falls at Mill Pond and turns brackish on its way to Great Bay. It is a University of New Hampshire town, built around a compact core near Thompson Hall and the Downeaster station, and its homes run the full range - antique colonials left from the old Oyster River settlement, mid-century houses, student rentals packed close to campus, and newer builds out toward Lee and Madbury. Owning a home here means working with three things at once: a long coastal winter, the salt and moisture that come off the bay, and the granite the whole town sits on. It starts with the season that tests a house hardest.

Seacoast winters put your heating on trial

Durham averages better than fifty inches of snow a year, and the cold arrives on the back of nor'easters that spin up the coast and drop the temperature fast. A January cold snap here has touched thirty-five below, and that is the night an undersized or aging furnace or boiler finally falls short - usually at the worst possible hour, when a failure is not just discomfort but a frozen-pipe emergency. We size heating to a real load calculation for your house rather than a rule of thumb, service furnaces and boilers before the season instead of during the first hard freeze, and when a system reaches the end of its life we replace it with equipment matched to a Seacoast winter. Heat that holds through the coldest week is the whole point of owning the system.

Cold-climate heat pumps and humid summers off the bay

Modern cold-climate heat pumps hold their efficiency well below freezing, which makes them a real option even through a Durham winter, and paired with backup heat for the hardest snaps they heat, cool, and dehumidify a home from one system. Summers on the Seacoast are humid, and humidity is where sizing matters most: an oversized air conditioner cools the air fast but shuts off before it pulls the moisture out, leaving the house cool and clammy and prone to musty basements. We size to the actual load and set the dehumidification up right. For the antique homes near the center of town that never had ductwork, ductless mini-splits deliver both heating and cooling without tearing plaster walls apart - and because the outdoor unit will sit in salt-laden air off the bay, we mount and protect it to survive the corrosion that eats unprotected coils.

Bedrock wells, granite, and what is actually in the water

The built-up core of Durham is on municipal water shared with UNH, but plenty of homes out toward the town's edges draw from private wells drilled into granite bedrock. On the New Hampshire Seacoast that bedrock is a known source of naturally occurring arsenic and radon, and a private well is only as safe as its last test. Arsenic carries no taste, color, or smell, and radon comes up out of the water and into the air of the house. The same wells often run hard, scaling the inside of your water heater and leaving film on fixtures and glass. We test for what is actually in your water rather than guessing, then build the treatment the results call for - arsenic reduction, radon aeration, a softener for the hardness, UV where it is needed - so the water is safe to drink and your plumbing lasts the years it should.

A tidal river, a high water table, and a wet basement

The Oyster River is tidal below the falls, and homes on the low ground near the river, Mill Pond, and the Great Bay shoreline sit over a high water table that presses groundwater against the foundation. Add a heavy coastal rain or a spring melt and a basement that was dry all summer starts taking on water. A sump pump is the front line, and a sump with no backup fails on its one big test, because the water peaks during the same nor'easter that knocks the power out. We install sump systems sized for real storm volume, add battery or generator backup so they keep running when the grid does not, and address the grading and drainage that let water reach the foundation in the first place.

Old homes, student rentals, and modern electrical loads

Durham has houses that predate central air, electric ranges, and car chargers by a century or more, and it has a large stock of older homes converted into student rentals near campus. Both tend to run on the same problem: undersized panels, knob-and-tube or cloth-wrapped wiring, and fuse boxes never meant to carry a modern home's load. That is both a safety issue and a hard ceiling on what you can add. We upgrade services to a safe 200-amp panel, replace outdated wiring with routing that protects plaster, trim, and finishes, and add the circuits a modern home needs - including a properly installed EV charger - all done to code and inspected. In a rental, that is also the difference between passing an inspection and failing one.

Power that stays on through a Seacoast storm

Coastal storms and ice take the power with them out here, and Durham has seen the multi-day outages that follow a bad nor'easter or an ice storm coating the lines. When the grid drops, so does the heat, the water, and - for a low-lying lot near the river - the sump pump holding the basement dry. A whole-home standby generator keeps all three running through a multi-day outage, starting on its own when the utility fails and shutting down when it returns. On the Seacoast that is not a luxury; it is what keeps the pipes from freezing and the basement from flooding during the exact storm that cut your power.

One call instead of five

The right-sized heating, the heat pump, the well treatment, the sump and its backup, the panel upgrade, and the generator are one licensed, veteran-owned team out of our New Hampshire branch, not five contractors to line up and coordinate. Same-day service where we can, permits pulled and inspections handled, and a lifetime workmanship guarantee behind every bit of it.

What we get called for in Durham

The work that comes up most around here. Same team, same guarantee, whichever one you need.

• Heat Pumps - Repair or replace modern heat pumps.
• Water Treatment - Cleaner, safer water for your whole home.
• Generator Install - Keep your home powered no matter what.
• Water Heaters - Repair or replace tank and tankless units.
• Panel Upgrades - Boost home power and improve safety.
• Boiler Repair - Restore heat fast with reliable service.
• Drain Cleaning - Clear slow or clogged drains quickly.
• AC Install - Energy-efficient AC replacements.

We also serve near Durham

Same team, same guarantee, a short drive away. Find your town for the local details.

• Madbury, NH
• Newington, NH
• Lee, NH
• Dover, NH
• Newfields, NH
• Stratham, NH