Boiler not heating? ProFlow provides boiler repair, annual boiler service, and boiler replacement across Caledon — Bolton, Caledon East, Palgrave, Alton, Inglewood, and the rural estates in between. Radiators, baseboards, and radiant floors, serviced by TSSA-certified gas technicians.
Boiler repair — no heat, lockouts, leaks, pressure faults
Combi boiler installation & boiler replacement
Annual boiler service & combustion safety check
Hydronic heating repair — radiators, baseboards, radiant floors
Same-day no-heat calls across Caledon
TSSA-certified gas technicians, natural gas & propane
Caledon has fewer boilers than furnaces — and that's exactly the problem when yours stops. Many HVAC companies see one or two a year. We see them every week: cast-iron boilers in century homes in Alton and Belfountain, in-floor hydronic heat in Caledon East estates, propane-fired combi units on rural lots past the gas main, and the baseboard systems common in older Bolton homes. When you search boiler repair Caledon, you want a technician who has worked on your type of system — not one learning on it.
ProFlow Plumbing & Drain Solutions Caledon handles boiler repair, annual boiler service, boiler replacement, and combi boiler installation across the whole town. Every gas and propane boiler is worked on by a TSSA-certified gas technician holding a G2 or G1 licence — Ontario law requires it, and we won't send anyone to a boiler who doesn't carry one. If your home runs an indirect tank off the boiler for domestic hot water, we service that side too; for standalone tanks and tankless units, see our water heater repair and installation page.
Boiler not heating, dropping pressure, or locking out with an error code? Call (289) 236-7045 for same-day boiler service anywhere in Caledon.
A dead boiler at −20°C isn't an inconvenience — in a few hours it's frozen pipes, and in a day it's burst ones. We treat every boiler not heating call in Caledon as an emergency, day or night, and dispatch a TSSA-certified technician rather than a call-back for the morning. Before we arrive, do these three things in order:
Step 1
If it's alarming, or anyone has a headache, nausea, or dizziness, get everyone outside and call 911 before you call us. A boiler that has stopped firing can still be venting badly.
Step 2
Read the code off the display and the gauge (it should sit around 12–15 psi cold). Don't keep resetting the boiler — repeated lockouts can mask the real fault and trip safety devices.
Step 3
Open cabinet doors under sinks on exterior walls and let a tap trickle. Then call (289) 236-7045. If a line has already frozen, our frozen pipe repair team comes on the same truck.
Most boiler replacement calls in Caledon end with the same question. A combi boiler heats the house and your taps from one wall-hung unit — no hot water tank, no second appliance, and a 95% condensing model typically cuts gas or propane use noticeably against a 25-year-old cast-iron boiler. It's our most common combi boiler installation: Bolton and Mayfield West homes with a tight utility room, and rural homes where a propane combi replaces both the boiler and the tank.
A conventional or system boiler with an indirect tank still wins for large estate homes in Caledon East and Palgrave with multiple bathrooms running at once — a combi can't keep up with three showers and a soaker tub. We size the boiler to the actual heat loss of the house, not the label on the old one, and we'll tell you plainly which type fits. If you're only replacing the hot water side, that's a water heater job, not a boiler one — and we'll say so.
Weighing boiler installation Caledon options? Call (289) 236-7045 for a sized, written quote — combi and conventional, side by side.
Half of the "boiler" faults we're called to are actually in the loop around it — the pump, the expansion tank, the zone valves, or air in the lines. That's why our hydronic heating repair starts with the whole system, not just the box on the wall.
Ignition failure, a dirty flame sensor, a failed gas valve, or a tripped high-limit. We read the code, test the component, and fix the cause — not just reset it.
A boiler that needs topping up every week has a leak or a failed expansion tank. One that climbs past 25 psi and dumps from the relief valve has a waterlogged tank or a bad fill valve.
One room freezing while the rest is fine points to air in the loop, a stuck zone valve, or a circulator pump that's quit. We bleed, balance, and replace what's failed.
That kettle-on-the-stove noise is scale on the heat exchanger — common in Caledon, where fill water runs 190–360 mg/L hard. We flush the system and, where it keeps returning, recommend a water softener on the fill line.
Drips at the pump flanges or valves are repairable. A weeping heat exchanger or rusted-through cast-iron section usually isn't. A blocked condensate trap on a condensing boiler will shut it down — a quick fix we see every winter.
A failed diverter valve, a scaled plate heat exchanger, or a flow sensor stops a combi making domestic hot water while the radiators stay warm. All three are repairable on the spot.
Caledon's newer estate homes and renovated farmhouses lean heavily on in-floor radiant heat — basements, garages, and whole main floors run on PEX loops fed from a manifold. The boiler is only half of that system. We service the manifolds, mixing valves, actuators, and zone controls that most furnace companies won't touch, and we diagnose cold-floor complaints by loop, not by guesswork.
We also add zones, replace circulator pumps and expansion tanks, swap out failed zone valves, and tie new radiant or baseboard loops into an existing boiler — including converting an old open-loop system to a closed one when a combi goes in. For an in-floor garage slab or a basement that never quite warms up, call us before the ground freezes.
Most January boiler emergencies were avoidable in October. A yearly boiler service is the cheapest line on this page, and the one that gets a 15-year boiler to 25. Book it in September or October, before the first cold week fills the schedule.
Everything else — igniters, sensors, pumps, zone valves, expansion tanks, diverter valves — is a repair, and most of it is on the truck.
Boilers are a small share of Caledon's heating — which is why so few local companies do them well. We do them every week, on natural gas and propane, from Bolton to Belfountain, and we never send anyone to a gas boiler without a TSSA G2 or G1 licence in their pocket.
TSSA-certified G2/G1 gas technicians on every boiler
24/7 no-heat emergency response across Caledon
Combi, conventional, radiant floor & baseboard systems
Written price before any work starts — repair and replace side by side
In winter, yes. A boiler not heating at −20°C turns into frozen pipes within hours, so we dispatch a TSSA-certified technician to Bolton, Caledon East, Palgrave, Alton, and the rural lots between them day or night. Before you call, check your CO detector — if it's alarming or anyone feels unwell, leave the house and call 911 first. Then note the error code and the pressure gauge reading and call us; don't keep resetting the boiler.
Yes. In Ontario, anyone working on a natural gas or propane boiler must hold a TSSA gas technician certificate — G2 for residential boilers, G1 for larger inputs. Every ProFlow boiler repair, service, and installation in Caledon is done by a G2 or G1 technician, and the work is recorded under that licence. If a company can't show you the certificate, don't let them touch the boiler — your insurer may ask for it after a claim.
For most two- and three-bathroom homes in Bolton, Mayfield West, or Caledon Village, a combi boiler installation is the better fit: one wall-hung unit does heating and hot water, the tank disappears, and a condensing model uses noticeably less gas or propane than an old cast-iron boiler. Large estate homes in Caledon East and Palgrave with several showers running at once still do better with a conventional or system boiler and an indirect tank. We size the boiler to the home's actual heat loss and describe both options side by side.
Most faults are repairs: igniters, flame sensors, circulator pumps, zone valves, expansion tanks, and combi diverter valves are all parts we carry. Boiler replacement in Caledon makes sense when the heat exchanger is cracked or a cast-iron section is leaking, when the unit is 20+ years old and parts are discontinued, or when two winters of repairs add up to half a new boiler. You'll get both prices on the same visit and a plain recommendation — we don't sell boilers to homes that don't need them.
Yes — hydronic heating repair is a large share of our boiler work in Caledon. We service radiant floor manifolds, actuators, and mixing valves, replace circulator pumps and zone valves, bleed and balance radiators and baseboards, and add zones such as a heated garage slab or basement. A cold room while the rest of the house is warm is usually air in the loop or a stuck zone valve, not the boiler itself — and we diagnose the system loop by loop.
Once a year, ideally in September or October before the first cold week. Our boiler service in Caledon includes a combustion analysis and CO test, cleaning the burner, igniter, and flame sensor, inspecting the heat exchanger for scale and cracks, checking gas or propane pressure, venting, and the condensate trap, testing system pressure, the expansion tank, relief valve, and pump, and bleeding and balancing the loops. Caledon's hard water scales heat exchangers quickly, so this is the visit that gets a 15-year boiler to 25.
Boiler quit on a −22 night in Palgrave. Searched boiler repair near me at 11pm expecting voicemail — ProFlow picked up. Tech was here by 1am, found a failed igniter, had the rads warm before he left. Can't say enough.
Two other companies in Bolton told us they "don't really do boilers." ProFlow does. Found the pressure drop was a waterlogged expansion tank, not the boiler, and fixed it in an hour. Honest and clearly knew the system.
Replaced a 28-year-old cast-iron boiler and the hot water tank with one combi unit. Propane use dropped noticeably this winter and we got a corner of the basement back. Clean install, TSSA paperwork handed over without asking.
Our heated basement floor in Caledon East had one zone that stayed cold for two winters. They traced it to a stuck actuator on the manifold — ten-minute part, warm floor. Other guys had quoted us a new boiler for it.
Combi stopped making hot water but the heat was fine. Tech explained it was the diverter valve, showed me the scale on the old one from our well water, and swapped it on the spot. Suggested a softener — no pressure, just advice.
Booked an annual boiler service for our Alton century home after years of skipping it. Combustion test, cleaned everything, bled the rads, and gave me a written report with the numbers. Quiet and efficient now. Booking again every fall.
Searched boiler installation near me while planning a garage shop in Inglewood. ProFlow added a radiant slab zone onto our existing boiler instead of selling us a second unit. Fair quote, matched the invoice exactly.
Boiler kept locking out with an error code every few days. Instead of another reset, the tech found a half-blocked condensate trap — cleared it, checked the venting, done. The explanation alone was worth the call. Belfountain recommends.
From a no-heat lockout at midnight to a cold radiant floor zone or a cast-iron boiler on its last winter, our TSSA-certified team delivers boiler repair, annual boiler service, and combi boiler installation across Caledon — diagnosed properly and priced before we start.
Tell us the symptom or error code and your boiler type — combi, conventional, or radiant floor — and we'll get right back to you. No heat right now? Call instead; it's faster.
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