Cold radiators, pressure that will not hold, kettling that sounds like a tea party in the basement: boiler problems are almost always a failed part, not a failed boiler. Circulators, zone valves, aquastats, expansion tanks, ignition: all repairable. We do not sell or install boilers, so nobody is going to talk you into replacing a 25-year appliance that needs one repairable part. Woodstock has one of the area's deepest stocks of century homes on hot-water heat: cast-iron rads in Old North and around Vansittart, plus modern combi units in newer builds.
Woodstock has one of the area's deepest stocks of century homes on hot-water heat: cast-iron rads in Old North and around Vansittart, plus modern combi units in newer builds. Boiler work is a real share of what we do here. Cast-iron rads, baseboard loops, in-floor, combi units: the failure patterns repeat, and most come down to a handful of serviceable parts.
Usually ignition (pilot, igniter, flame sensor), the aquastat, or a failed circulator. All diagnosable in one visit and repairable on the spot in most cases.
Air trapped in the loop, a stuck zone valve, or a circulator running weak. A purge and rebalance, or a valve/pump repair, brings the cold rooms back.
A weeping relief valve, waterlogged expansion tank, or a small system leak. We find where the water is going and fix that, not just top it up.
Scale on the heat exchanger making steam pockets, or flow starvation. It is loud and inefficient, and it shortens boiler life. Fixable.
Combi boilers (Viessmann, NTI, Navien and the rest) have a separate DHW path: diverter valves, plate exchangers, flow sensors. All serviceable parts.
Modern boilers lock out to protect themselves. We read the code, trace the actual fault, and clear it properly instead of just resetting it.
Pump flanges, zone valve bodies, and shut-offs drip long before they fail. Caught early, this is a routine repair, not a flood.
Oversized boiler, a failing aquastat, or trapped air. Short cycling burns gas and hammers components. We diagnose which one yours is.
A cold boiler in mid-winter, or one losing pressure daily, is not a wait-until-next-week problem. Our phone line and online booking answer 24/7 — call or book any hour and the system locks in the next available window, and genuine boiler emergencies in Woodstock get same-day priority whenever the schedule allows. Regular service hours are Monday to Saturday, 8 a.m. to 6 p.m. One important exception: if you smell gas or a CO alarm is sounding, that is life-safety — call 911 and Enbridge (1-866-763-5427) first, then use the red Emergency button at the top of this page.
The diagnostic visit is the only cost we can quote before we're on site. Once we've found the fault, you get a firm price for the repair itself, and we don't touch anything until you approve it.
| Diagnostic visit | $129, credited to $49 when we do the repair |
A well-kept boiler runs 25-40 years, and almost everything on it is a serviceable part: circulator pumps, zone valves, aquastats, ignition modules, expansion tanks, relief valves. The genuine replacement case is a cracked heat exchanger or section on an old unit. We do not sell or install boilers, so our repair-or-replace answer has no install commission behind it: if yours is fixable, we fix it.
Hydronic systems reward maintenance more than anything else we service:
Tell us what the boiler is doing (cold rads, pressure loss, error code, noise), pick a date and time, and your appointment confirms instantly. For a gas smell or CO alarm, use the Emergency button in the nav.
Hydronic and hot-water heating specialist. TSSA-registered G2 gas technician, natural gas and propane, all makes. No install commissions, no replacement pressure. Book online or call (226) 242-1942 anytime, day or night.
Book Boiler Repair Online(226) 242-1942 · service@servicefirsthvac.ca · Mon to Sat 8 a.m. to 6 p.m. · Woodstock, Oxford County, ON