Boiler Repair in Middlesex County, MA
Nobody's Boiler Quits in October
No heat, a bang when it fires, water under the unit, or one room that never warms up. Opus repairs and services gas and electric boilers across Middlesex County and the Merrimack Valley, out of North Billerica, steam systems included. If the heat is off and it’s freezing outside, call rather than read, because 24/7 emergency plumbing is answered at any hour. If it’s September and you’re being sensible, an annual service costs less now than a breakdown will in January.
- Permit, inspection, and haul-away included.
- Booties on, floors covered, every visit.
- Emergency help, around the clock.
Why Isn't the Boiler Firing?
No Heat and Boiler Not Igniting
Five faults cover most no-heat calls, and two of them you can check yourself before anyone drives out.
The switch or the breaker.
System pressure has dropped too low.
A tripped low water cutoff.
Ignition or flame sensing.
Thermostat or wiring.
A boiler that locks out twice in a week is not asking to be reset.
SUBMIT A FORM & REACH OUT
A Boiler Tells You Before It Quits
Noise, Leaks and Low Pressure
Banging and knocking has different causes depending on the system. On hot water it’s usually trapped air or a circulator problem. On steam it’s condensate sitting where it should have drained, and it tends to get louder over a season rather than better.
Water under the boiler needs its source identified before anything else. A relief valve discharging is the system telling you pressure went too high, often from a waterlogged expansion tank. A weeping circulator flange or pump seal is a repair. Water coming from the body of a cast iron boiler usually isn’t.
Pressure that keeps dropping means water is leaving the system somewhere. Sometimes it’s obvious, sometimes it’s a pinhole in a return under a floor, and sometimes it’s the relief valve letting go each time the boiler heats. Topping it up weekly is a workaround, not a fix, and it puts fresh oxygenated water into a system that would rather not have it.
If the house has been cold for a while, the pipes are the next problem after the boiler. That connection runs both ways, and frozen and burst pipes covers what to do about it.
Annual Boiler Service and Cleaning
How Often a Boiler Should Be Serviced
Once a year, before the heating season, and it’s the single thing that most decides whether a boiler reaches twenty-five years or fifteen. Four things happen on a proper visit.
Combustion gets tested, not guessed at.
The heat exchanger and burner get cleaned.
Safeties get tested properly.
The system gets looked at, not just the boiler.
Booking it in September rather than January is worth doing for a reason beyond the schedule. There’s $75 off boiler servicing through our special offers, and members pay the member rate through our maintenance plan.
Steam Boiler Maintenance
Steam wants more attention than hot water, not less, and it’s the work most local outfits decline.
The boiler needs flushing to clear sediment, the sight glass has to stay readable, and the low water cutoff wants testing rather than assuming. Water level and water quality matter far more on steam than people expect, and a system that’s surging or banging is usually telling you about one of those two.
Cold Radiators Usually Aren't the Boiler
Bleeding Radiators, Zone Valves and Circulator Pumps
One cold room with the rest of the house warm is almost never the boiler, and knowing which is which saves you a call.
Hot at the bottom, cold at the top is air. That radiator needs bleeding and it’s the most common version of this complaint. Upstairs rooms get it first, because that’s where air collects.
Hot at the top, cold at the bottom is different. That’s sludge or a valve that isn’t opening properly, and bleeding won’t touch it.
A whole zone cold is usually a zone valve or a circulator. A circulator that’s hot to the touch but moving nothing has generally lost its impeller or its coupling. Zone valves fail in position, so a zone can be stuck shut or stuck open, and stuck open means one part of the house cooks while another stays cold.
We bleed the upstairs radiators before packing up on any visit, because that’s the callback we’d otherwise be making in a fortnight.
September Costs Less Than January
The same visit is a different experience depending on when you book it.
In September the schedule is open, the house is warm while we work, and anything we find can be planned around. Parts for an older boiler can be ordered rather than chased. Nobody is making a decision under pressure.
In January the schedule is full, every heating company in the county is behind, and a boiler that could have been repaired in autumn has sometimes taken itself past that point. The decision gets made in a cold house with the family in coats, which is the worst possible condition for spending money well.
That’s the whole argument for annual service. Not that it’s cheaper on the day, but that it moves the decision to a month where you’re in charge of it.
Repair or Replace
When Fixing It Stops Making Sense
We fix boilers other people would condemn, and we say so when one isn’t worth it.
Repair is usually right on a boiler under twenty that’s had regular service, where the fault is a control, a circulator, an igniter or a valve. Cast iron in good condition is worth keeping.
Replacement starts making sense when a section is cracked, when the repair costs a serious fraction of a new install on a unit already past twenty, or when it’s failed twice in two winters. Boiler replacement covers how a new one gets sized, which matters more than which brand goes in.
We don’t work on oil-fired boilers. Gas and electric only, across the fourteen towns on our service areas.
The Boiler Standard
Boiler Work Is the Job We Take First
A lot of crews would rather pull your boiler out and sell you a new one than actually work on it, and plenty won’t touch steam at all. Boilers are our first call, not our last. Rick services and repairs them himself, steam systems included, and a cracked section is about the only thing that gets your boiler condemned in this company. A part that can be replaced gets replaced. He spent close to 20 years on New England systems, most of it union, working the same houses these boilers are sitting in today.
Our Customer Feedback
Rick Green did an awesome job with all of my plumbing needs during a total renovation. I needed everything in my home connected/redone in the kitchen and bathroom. He took care of the transition from bathtub to standing shower-it’s all …
July 2026
Ricky and the team at OPUS are fantastic! Super knowledgeable, punctual and all around great group of guys. Really grateful to have found them, I sleep easier now knowing I have a great plumbing team (you genuinely never know when you may …
August 2026
I highly recommend (Rick) he was on time fixed everything, was polite and answered all our questions and cleaned up everything when he was done! Thank you so much!
March 2026
April 2026
“Been using Opus for years on a variety of projects. Reliable, transparent and priced well. Rick does great quality work. Highly recommend for homeowners, investors and builders.”
May 2026
“Had a leak in my water heater tank. Ricky and team arrived very quickly, same day to assess the situation. I asked if we could avoid swapping out the water heater and just buy the parts needed to fix (I was being cheap!) – he did he absolute best (a few hours) trying to extract the old part and replace it with a new one. He tried far longer than any other plumber would have tried. After several hours of attempts we all came to the conclusion that it simply wasn’t coming out. I ran to Home Depot (it was Saturday) and grabbed a water heater. Ricky and team had it installed within 15 minutes and my new unit is working perfectly.
Very impressed with Ricky’s transparency and honesty. Most others wouldnt have given me the time of day…”
April 2026
I contacted Opus upon being referred to them by someone they also did great work for. They showed up on time and finished a heating system job for me with the utmost professionalism and quality. I would definitely recommend them to others!!
October 2025
Ricky was Fantastic!!!! Fast and accurate service!!! Highly recommend!!!
March 2026
I highly recommend (Rick) he was on time fixed everything, was polite and answered all our questions and cleaned up everything when he was done! Thank you so much!
March 2026
April 2026
Rick Green did an awesome job with all of my plumbing needs during a total renovation. I needed everything in my home connected/redone in the kitchen and bathroom. He took care of the transition from bathtub to standing shower-it’s all …
July 2026
Ricky and the team at OPUS are fantastic! Super knowledgeable, punctual and all around great group of guys. Really grateful to have found them, I sleep easier now knowing I have a great plumbing team (you genuinely never know when you may …
August 2026
“Had a leak in my water heater tank. Ricky and team arrived very quickly, same day to assess the situation. I asked if we could avoid swapping out the water heater and just buy the parts needed to fix (I was being cheap!) – he did he absolute best (a few hours) trying to extract the old part and replace it with a new one. He tried far longer than any other plumber would have tried. After several hours of attempts we all came to the conclusion that it simply wasn’t coming out. I ran to Home Depot (it was Saturday) and grabbed a water heater. Ricky and team had it installed within 15 minutes and my new unit is working perfectly.
Very impressed with Ricky’s transparency and honesty. Most others wouldnt have given me the time of day…”
April 2026
“Been using Opus for years on a variety of projects. Reliable, transparent and priced well. Rick does great quality work. Highly recommend for homeowners, investors and builders.”
May 2026
Ricky was Fantastic!!!! Fast and accurate service!!! Highly recommend!!!
March 2026
I contacted Opus upon being referred to them by someone they also did great work for. They showed up on time and finished a heating system job for me with the utmost professionalism and quality. I would definitely recommend them to others!!
October 2025
Questions Billerica Homeowners Ask Us
Owner & Master Plumber
Why is my boiler making a banging noise?
One radiator is cold at the top but hot at the bottom. What is that?
The boiler pressure keeps dropping. Should I worry?
What does an annual boiler service actually include?
The boiler shut off and won't restart. What can I check first?
Owner & Master Plumber
The Towns We Cover Across Middlesex County
Opus runs out of North Billerica and covers roughly a 20-mile radius, from the older neighborhoods of Woburn and Winchester to the affluent, boiler-heavy homes in Concord, Carlisle, and Lincoln. If your home is within about 20 miles, we most likely cover you.
Tips for Keeping Your Water Hot and Your Basement Dry
It’s about to get cold
You think something’s leaking
Your boiler needs looking at
It’s about to get cold
You think something’s leaking
Your boiler needs looking at
Your water heater is making you nervous
