Oil-to-Gas Conversion in Brooklyn & Across NYC

There is no useful flat figure, because a large share of the cost belongs to the utility rather than to us — bringing a gas service line to the house can dwarf the boiler itself on some blocks and be modest on others. The honest sequence is to get the utility's number first, then price the mechanical work against it. We will not quote a conversion before that answer exists.

You contact the gas utility for your address — National Grid or Con Edison depending where you are — and request a service availability determination. A gas main on your street does not guarantee you can be connected affordably, so get their answer, including cost and timeline, in writing before committing to anything else.

Sometimes, but do not assume it. A modern high-efficiency gas boiler produces cooler, wetter exhaust than an old oil burner did, and an unlined masonry chimney is generally not suited to it. The usual outcomes are a correctly sized liner or direct venting through a sidewall. Which one applies is decided during planning, against your equipment and your building.

It has to be properly decommissioned — emptied, cleaned, and then either removed or abandoned in place to the applicable requirements, with the accompanying documentation. A buried tank carries the extra question of whether it has already leaked, which is a larger problem than the conversion and one worth establishing before the job is priced rather than during it.

Often not yet. Conversion has a payback period, and if the existing boiler is mid-life, correctly sized, and heating evenly, the economics usually argue for waiting. The moment conversion makes most sense is when you are replacing the boiler anyway — then the fuel decision costs you nothing extra to make.

Our portion is typically a small number of days once equipment is on site. The schedule is usually set by the utility's side — service line installation and meter setting — which can run weeks and is not something we control. Plan the project around their timeline, not ours, and start well ahead of heating season.

Usually, though how much depends on fuel prices and on what you are replacing. A meaningful part of the saving often comes from correct sizing rather than from the fuel switch itself — an oversized boiler short-cycles and wastes fuel whatever it burns, so a conversion that also fixes a sizing error tends to outperform one that simply swaps fuel.

Gas line work and permit-required portions are performed through appropriately licensed partner professionals, coordinated as part of the overall project rather than left for you to arrange separately. We will tell you upfront which parts of your specific job fall into that category.

Yes. Multi-family and co-op conversions bring extra coordination — board approval, shared chimneys, access to a central mechanical room, and scheduling around tenants — but they are a normal part of what we do across the boroughs.