On Call NJ has built its reputation in Randolph on one simple promise: dependable plumbing, day or night.
Our technicians arrive in Randolph on time, in uniform, and ready to explain exactly what's going on before any work begins.

Heating Repair Problems We Solve in Randolph
Our Randolph customers call us for heating service help with issues like these:
Trusted Heating Repair in Randolph, NJ
Many homes in Randolph were built decades ago, and aging supply lines and drains are some of the most common calls we get in Morris County.
When you need heating repair in Randolph, you want it done right the first time. Our licensed technicians arrive prepared, diagnose the real problem, and give you an honest, upfront price before any work begins. Get Randolph's trusted team on the job. Call On Call NJ at 862-860-1807 today.
Need help now? Get Randolph's trusted team on the job. Call On Call NJ at 862-860-1807 today.
Other Services We Offer in Randolph
On Call NJ is your one call for everything plumbing, heating, and cooling in Randolph:
Heating Repair FAQs
Yes. On Call NJ offers 24/7 emergency service throughout Randolph and all of Morris County. Whenever a plumbing, heating, or cooling emergency strikes — day, night, weekend, or holiday — call 862-860-1807 and we'll respond fast.
Because we serve Randolph and the surrounding Morris County area directly, we're often able to reach you the same day, and quickly for true emergencies. Call 862-860-1807 and we'll give you an honest time estimate.
We give you an upfront, transparent price before any work begins on your Randolph job, so you always know what to expect — no surprises after the fact.
Yes. We stand behind our workmanship on every repair and installation we complete in Randolph. If something isn't right, we make it right.
Join the Randolph homeowners who've made On Call NJ their go-to for plumbing, heating, and cooling.