About
JSM 24/7.
A heating and cooling company built around a phone line that never closes.
JSM 24/7 Emergency Services works from 480 New Rochelle Rd in Bronxville.
The name says what the company is built around: a phone line a real person answers at any hour.
When the call comes in at 2am, Joe picks up.
The work is heating, cooling and hot water.
Boilers, furnaces, heat pumps, central air, ductless systems and water heaters.
Steam is a big part of it. A lot of companies avoid steam.
JSM works on steam and hydronic systems in houses, commercial buildings and multi-unit buildings.
Every job gets the same approach. First, find what has actually failed.
Then lay out the options, from a budget replacement to high efficiency, with what each costs to run.
Then pull the permit, pipe it properly and meet the inspector on site.
Neighbors noticed. JSM was voted a Neighborhood Favorite on Nextdoor in 2024.
A contractor on a commercial steam job wrote that it passed all inspections the first time around.
Every photograph on this site is JSM’s own work. Nothing is stock.
Booked work runs Monday to Saturday, 9am to 5pm. The emergency line never closes.
Gas, steam and high-efficiency boilers, replaced properly and piped so the next person can work on it.
02Furnaces, full HVAC systems, ducted and ductless heat pumps, sized for the house rather than the catalogue.
03Tank, tankless and indirect hot water, installed and serviced so the last shower is as hot as the first.
04Annual service and repair for boilers, furnaces, heat pumps and HVAC, so the failure happens on your terms.
05No heat, no hot water, or a leak at midnight. The emergency line is open around the clock, seven days.
06Central air, ductless and heat pump cooling, sized for the house and measured on commissioning.
A boiler that quits in February is not a scheduling problem, it is an emergency. Call or text any hour and a real person picks up.
Any hour, seven days. Say what it is doing and whether you have heat or hot water right now.
Budget replacement through to high efficiency. You hear what each one costs to run, not just to buy.
To manufacturer specs and up to code.
Back to comfort, with peace of mind.
Say whether you have heat, whether you have hot water, and whether anything is leaking.
Any hour for an emergency. Booked work and quotes run Monday to Saturday, nine to five.
What has actually failed, and whether it is worth repairing or has reached the end.
Budget through to high efficiency, with the running cost of each one explained.
Permit pulled, piped properly, inspector met, and the heat back on.
From 480 New Rochelle Rd in Bronxville across Westchester County. A little outside that, call and ask.
Tell us what the system is doing and whether you have hot water. You will get a straight answer and a real price.
