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Heating and cooling repair in New Haven, CT
Radiators in East Rock, a three-family in Fair Haven, a condo near Long Wharf: we work on the systems New Haven actually has.
BDM Mechanical repairs and replaces boilers, steam and hot-water systems, furnaces, central air and heat pumps in New Haven, CT. The line is answered 24/7, and technicians come from the Guilford head office or the Bridgeport service office along I-95, so a no-heat call in the city gets a real time window on the phone.
Radiator country
A lot of New Haven was built before 1940, and it shows in the basements. Wooster Square, East Rock, Fair Haven and the Hill are full of two- and three-family houses heated by cast-iron boilers, often one per unit, with radiators that were balanced decades ago and never touched since. Steam systems here need the low-water cutoff, pressure control and main vents checked every season, and hot-water systems need their expansion tanks and circulators looked at before they fail on a January night.
Westville, Beaver Hills and Morris Cove have more single-family colonials, where a furnace with central air or an added ductless system is common. Apartments and condos downtown and near Long Wharf often run on through-wall PTAC units or small split systems, and landlords call us for a unit-by-unit plan rather than one big replacement.
Summers on the harbor are humid, so an air conditioner that cools a room without pulling moisture out leaves it clammy. Sizing by load rather than by square footage matters here as much as anywhere we work.

What New Haven calls us for
Steam heat
Water hammer, spitting vents, cold radiators and low-water lockouts in one-pipe and two-pipe systems.
New Haven steam serviceRadiators and baseboard
Leaking valves, stuck vents and rooms that never warm up on the top floor.
Radiator repair in New HavenBoiler repair
No heat, leaks and pressure problems in the cast-iron boilers under most older houses.
Fixing a New Haven boilerPTAC units
Through-wall heating and cooling units in apartments, condos and offices.
PTAC work downtownDuctless mini splits
Cooling and heat for radiator houses without tearing into plaster for ducts.
Mini splits for radiator housesHeat pumps
Cold-climate units that cut oil or gas use while the boiler stays as backup.
New Haven heat pumpsHow a call from New Haven is handled
Calls from New Haven reach the same 24/7 line as every other call, and the job goes to the head office on Oxbow Ln in Guilford, which covers New Haven on routine runs. When the Guilford schedule is full on a cold night, the Bridgeport service office picks it up, and you are told which office is coming before anyone leaves.
Tell us the system type, the fuel and what it is doing when you call. A boiler that is short of water, a furnace flashing a code or a heat pump stuck in defrost each points to different parts.
Questions from New Haven
Yes. One-pipe and two-pipe steam systems are a big part of our work in the city, from vents and controls to full boiler replacement sized to the radiators.
Yes. We repair and replace through-wall PTAC units one apartment at a time or across a building, and we can plan the work around tenants.
Both offices cover the city, the Guilford head office from the east and the Bridgeport service office from the west, and one phone number reaches both.
Other towns we cover close by
Hamden
Hamden mixes older houses near Whitney Avenue with postwar capes and newer homes up toward Sleeping Giant.
Heating and cooling in HamdenNew Haven County
The Guilford head office covers the shoreline half of the county.
Heating and cooling in New Haven CountyNo heat or no cooling in New Haven?
Tell us what the system is doing, and you get a time window on the same call, any hour.