New York is the city that never sleeps. The Ferry, MTA, and Katz’s stay open all day and night—why doesn’t your mechanical contractor?

System downtime can be detrimental to your business operations. In the event of mechanical emergencies, the timeliness of your repairs are critical to getting you back to normal.

At React Technical, we understand how important it is to get your systems up and running. That’s why we offer 24/7 mechanical construction services for companies across the Big Apple.

REACT: It’s Our Name, and It’s What We Do

If you come to us with HVAC problems, we’ll move quickly. Have a boiler that broke down overnight? Don’t worry, we’ll react. It’s much more than just a name—it’s how we do business.

Our experts are available anytime. Whenever an emergency occurs, you’ll have peace of mind knowing our highly trained technicians will be there when you need them the most. No matter the time, we’re ready to diagnose your problem and start working towards a solution.

However, our mechanical construction service isn’t just quick. Our mechanical contracting solutions are also cost effective, comprehensive, and, most importantly, reliable.

24/7 Emergency Response Services

Heating | React Technical

Heating, Ventilation & Air Conditioning

Boiler | React TechnicalBoiler Installation or Replacement

Tower | React Technical

Cooling Tower Repair

Piping | React Technical

Piping & Ductwork 

Fabrication | React Technical


Sheet Metal | React Technical

Sheet Metal

Need a mechanical construction service ASAP? Turn to React, we’ll be there in less than 24 hours.



Why Should I Partner With React?

When searching for mechanical construction services, you have a lot of providers to choose from. Because the quality of your repair work directly affects your system’s performance, you need to partner with a trusted service.

Here’s what sets React apart from the rest:

Experienced, Certified Technicians

Our technicians are experts when it comes to mechanical construction and repair. For every client, we guarantee the use of state-of-the-art equipment to quickly treat problems and make your repairs last for years to come.

When you partner with React, you can rest assured that we will deliver high-quality solutions to withstand the test of time. Our experts provide dependable repairs that are always done right the first time.

Continued Maintenance and Care

At React, we get your system up and running, but our work isn’t over after we walk out the door. For your equipment to reach its full potential, you need to keep it healthy over time.

That’s why we offer continued maintenance services for every client. You use your systems every day, and with continuous use comes wear and tear. While these problems often start small, if left untreated, they can snowball into severe system-wide issues.

Luckily, our technicians stop developing issues before they have a chance to escalate into full-fledged problems down the road. Our tune-ups don’t just prevent breakdowns, they also keep your equipment in good condition, adding years to your system’s expected service life.

Exceptional Service You Can Trust

Thirty-five years ago, React first opened its doors in Long Island. We are dedicated to our community and maintain client relationships with the same principle we use to treat your equipment. Your system is built to last a lifetime, and so is our partnership.

Over the past three decades, we’ve grown into the Tri-State Area’s leading provider of high-quality mechanical construction services. Our continual growth is thanks in part to our ability to deliver trustworthy solutions that exceed your expectations.

But don’t just take our word for it—see how our previous clients feel:

“..(React) quickly troubleshooted and detected today’s issue…our technician did it with careful and kind concern. He was polite, professional and knowledgeable to a very high degree.” – Betsy K.

“Just calling React and talking to the wonderful and talented Leah Levin makes using this company for any of your HVAC needs a pleasant and helpful experience! I wish there were more companies who employed people like Leah! Thank you!” – Mandi R.

“Mike is relentless in keeping everyone moving forward, getting the right resources and materials, keeping his own techs fully utilized, and immediately addressing every issue as it is identified…Most appreciated by a CxA. Mike is very effective and a valuable asset for React.” – Roy F.

“(React’s Technician) was a pleasure to deal with and was very attentive to the nature of the problem. Please know the treasure you have in this employee for customer service of this caliber is very far and few between.” – Betsy K.

“Hats off to (React). Our technician helped us a GREAT deal over the weekend. He always steps up and is the best guy you have in our opinion. Please take good care of him.” – John S.

“As I have told you this before, out of all of your tech’s in the past 5 years that I have dealt with, without a doubt, John is amazing. The guy is simply courteous, reliable, diligent, always a super star.” – Chris M.

Need Dependable, Quick Repairs ? You’re in The Right Spot.

At React, nothing attests to our quality of work like repeat business. Commercial building owners across the Tri-State Area know we provide effective, reliable solutions.

If you’re dealing with HVAC, boiler, duct, or chiller issues, reach out to our expert team—we’re only a click away.