Unlike furnaces, boilers are not used for heating. The repair is actually a distinct repair, the diagnostic process is different, and the implications of a wrong diagnostic are more severe. An inefficiently patched boiler is more than just inefficient, it can overpressure, leak carbon monoxide or flood a mechanical room.
It has been more than 20 years that BOS Plumbing and Drains have been in business and performing boiler repair services throughout Southern Ontario. We install residential boilers and commercial boiler systems, both gas and oil, hot water and steam. Our licensed HVACR technicians understand these systems, how they fail, manufacturer-specific quirks, and how they are monitored for safety before they are returned to online service.
Call us if your boiler is failing to operate, has lost pressure, is making noise or displaying a fault code that you can’t reset. We will have someone here soon!
The boiler is an essential part of the heating system of your property. As it begins to fail, you can end up paying more for repairs, suffering some water damage, using less efficient heat or even having a system that doesn’t work at all.
Here at BOS Plumbing and Drains we specialize in boiler repair service for all types and brands. Our trained technicians come with all the right tools to diagnose and repair issues in an efficient and speedy manner.
We help with:
When you look for boiler repair near me, boiler fix near me, or reliable heating and cooling near me, BOS Plumbing and Drains are the company that you can rely on as the trusted company in the GTA.
Expert solutions for all your residential & commercial plumbing needs
We serve the Greater Toronto Area and surrounding regions with local expertise
Your Boiler Is Losing Pressure Regularly: A closed system should maintain pressure. If the system has to be topped up frequently, and every time the system pressure is low, there is a leak somewhere inside the system which is at the relief valve, leak outside the system at fitting, or leak in the expansion tank diaphragm.
You Have A Hot Water Boiler Leaking: Any fitting, valve or from the unit itself. If you have a leaking boiler, you should never ignore it! Water coming in contact with gas or electric parts is hazardous; a trickle feed turns into a big leak.
Some Rooms Are Cold While Others Are Hot: In a hydronic system, some rooms are hot and some are cold. This indicates that there are problems with the zone valves, circulator pump, air locks in the system, or balancing problems in the piping.
The Boiler Is Making Banging Or Kettling Sounds: If the boiler produces a rumbling/banging sound while running, it is likely that the heat exchanger has scaled. If Limescale is not removed, it insulates the boiler, causes the boiler to work harder and can lead to a premature heat exchanger failure.
The Pilot Light Keeps Going Out, Or The Unit Won’t Fire: On older standing-pilot models, a faulty thermocouple is the most common cause for the pilot light to blow out or if the unit will not fire. In contemporary electronic ignition systems, fault codes help to identify the fault in a component that our technicians are able to diagnose directly.
The Pressure Relief Valve Is Venting Or Weeping: PRV is a safety device. If it does vent, it is functioning as it should, but the reason(s) (overpressure, faulty PRV, or a waterlogged expansion tank) must be determined and addressed. If the PRV is continually leaking, it’s telling you that something is amiss upstream.
Error Codes On The Display That Won’t Clear: Modern boilers perform diagnostics all the time. Fault codes are used to determine specific failures. We read them and do physical tests to confirm the diagnosis, and we then correct the real issue.
If you’re experiencing any of these, don’t delay! When it comes to emergency boiler repairs, it’s quicker and more affordable than a flooded mechanical room or a total failure of the system on a chilly winter’s night.
The complete system, the boiler itself and the distribution system is covered by boiler repair service from BOS.
Heat Exchanger Inspection And Cleaning: Inspection and cleaning of heat exchanger surfaces may be necessary as the scale build-up will impact heat exchanger performance along with corrosion and physical cracks. Inspection, chemical cleaning (if necessary), and replacement of the exchanger when appropriate. A cracked gas boiler will be more of a safety problem than an efficiency problem.
Circulator Pump Repair And Replacement: A circulator circulates the hot water. However, if it fails, regardless of the boiler’s ability to fire, the bearing is seized, the capacitor fails, and the heat stops moving. We carry common circulators, and will replace them the same day.
Zone Valve Service: Be sure to have zone valves that will open or you will have a whole zone of the house cold. An unfinished zone valve will use energy unnecessarily and will lead to over heating in one zone and under heating in another. Test, rebuild (if possible) and replace as necessary.
Expansion Tank Replacement: All hot water boiler systems require proper tank size and filling of the tank with the correct amount of water for the system to function properly. If the water level in the expansion tank keeps going up, the pressure relief valve keeps discharging and the pressure in the system will fluctuate. Replacement is simple and can solve many of the sometimes baffling pressure problems.
Pressure And Temperature Controls: The aquastat, high limit controller and operating control regulate the firing of the boiler. Short cycling, overheating lockout or a system that fails to fire altogether are the result of failed or miscalibrated controls. These controls are tested, calibrated and replaced for all major brands.
Gas Valve Service: If the gas valve is faulty, the gas fired boiler will not fire or will not shut off when needed. Our licensed gas fitters test gas valve function and provide a check for correct modulation on condensing units and replace as required.
Flue And Venting Inspection: If the flue is blocked or corroded on a conventional boiler, there will be backdraft and CO danger. With condensing boilers, the PVC venting must be free of obstruction and sloped for condensate to run off. The entire venting route is examined.
Condensate System Service: the acidic condensates from condensing boilers have to be drained properly. If the unit locks out on a high condensate fault it is likely due to a blockage in the condensate trap or drain line. Condensate components are removed, cleaned and replaced.
Boiler Flushing And Water Treatment: Old and dirty system water contains magnetite sludge which accumulates in the heat exchanger and impedes circulation water flow. Inhibitor treatment can help to prolong system life by achieving a power flush. This is recommended for all systems over 5 years old with no maintenance.
System Pressure Testing And Leak Repair: We pressure test the entire system for leaks that may not be seen when the system is running, trace the leak to the source, then repair the leak permanently, rather than just tighten and hope.
The majority of prematurely failed boiler services have failed due to lack of maintenance. A service is a simple procedure, but will ensure the boiler continues to operate for many years.
Boiler Maintenance visit from BOS includes: combustion analysis and burner cleaning, heat exchanger inspection, flue and venting check, pressure and temperature control check, expansion tank pressure check, circulator pump and zone valve testing, system water sample and inhibitor level check, safety control testing and a written service record.
An October or November boiler service near me is always higher each year as people start to think about their boiler and remember they haven’t worked on it since last winter. Book ahead. A well maintained boiler will run at lower cost, break down less frequently and stay in place for 25-30 years, compared to 15-18 years if not properly maintained.
CO Detectors are also checked at each boiler service. It is common sense but not compulsory that the invoice must include the required information.
Boiler cost replacement versus repair is a true equation and we’ll give you a true answer.
It is best to repair a relatively new boiler (less than 15 years old) if only one part is broken, rather than replacing it. Parts are still available, the heat exchanger is probably still in good shape and the remainder of the system has years of useful life remaining.
Units 20+ years old, with a cracked or heavily scaled heat exchanger or requiring several large repairs in the last few years are more suitable for replacement. Modern condensing boilers have efficiencies of 90%+ as opposed to 70 to 80% for older non-condensing boilers. The energy savings during the 5 to 10 year life of the unit make the cost gap to a new unit smaller than most would think.
We’ll inform you of what we have found and the price of every option. It’s up to you to make the choice.
Having a broken boiler in the middle of winter can easily become a major emergency. This is why BOS Plumbing and Drains provides emergency boiler repair services in the Greater Toronto Area with a quick response.
We have an emergency on-call team that will deal with emergencies regarding heaters and plumbing at any time of the day or night. In case your system suddenly goes offline, has a leak or makes strange noises and odors, our technicians can quickly detect the problem and get your system back up and running safely.
Being a dependable 24 hour plumbing service and emergency HVAC provider, we know just how critical it is to be able to help during the cold Canadian weather.
Our emergency services include:
Call BOS Plumbing and Drains if you have a leaking boiler or no heating at all, as we are on call for you to come and help you out immediately and in a timely manner if you need our services.
Boiler repair near me and boiler fix near me results throughout Southern Ontario come from BOS: real and manned by our own licensed technicians:
Toronto and the GTA: All municipalities in Toronto as well as all surrounding municipalities. Any type of residential and commercial boiler system.
Mississauga: Full residential and commercial coverage. Our team works as a licensed boiler repair crew and a plumber in Mississauga, which means that you can call us once for heating and plumbing service.
Oakville: Via Lake to Escarpment. If you are looking for hydronic heating services and/or plumber in Oakville Ontario, then homeowners can call BOS for help.
Hamilton: This includes Ancaster, Dundas, Stoney Creek and Flamborough. Very strong experience here in commercial boilers, and multi-unit buildings and older radiant systems.
Milton: Residential coverage in line with growth of the community.
Niagara: St. Catharines, Niagara Falls, Welland, Grimsby and Thorold. The older houses, all with cast iron radiators, are a specialty throughout Niagara.
Cambridge: Galt, Hespeler, Preston. Same day plumber and boiler repair dispatch available for most Cambridge calls.
The same qualified technicians, same level of service and parts and labour warranty from any location.
This is because individuals using heating and cooling near me searches are likely to be new customers who are searching for a cooling unit for the first time. Many of them remain because we take care of everything: One company, one call, no having to coordinate multiple trades.
Here at we’re a full service plumbing company and HVAC company throughout Southern Ontario. We do all of the following: Boiler repair, furnace repair and installation, heat pump systems, air conditioning repair, drain cleaning, sewer repair, water heater services and emergency response for plumbing emergencies of every kind.
Residential plumber and commercial plumber crews are both from BOS. We’re equipped and staffed to handle it, whether you’re dealing with a single family home in Oakville, or a 40 unit apartment building in Hamilton.
Our coverage, which is true throughout the GTA, and in Southern Ontario, makes us accessible to plumbers near me and plumbers service searches. It is staffed with our own employees and not with employees who are new to us.
All our HVACR technicians are equipped with valid and current Gas Fitting Licences, Boiler Operator’s Licences (as applicable) and Refrigerant Handling Qualifications. All work is consistent with the Ontario Building Code and the TSSA Standards. Allows permits to be pulled when needed. Inspections passed.
BOS provides HVAC service for the entire HVAC system through the winter months, summer cooling and year-round plumbing. One connection and one warranty, one phone number to call.
BOS Plumbing and Drains can repair and service the most popular Canadian brands of boilers. Our expert staff is qualified to service, repair and maintain Navien, Viessmann, Bosch, Weil-McLain, Slant/Fin, NTI, Baxi, Rinnai, IBC, Triangle Tube, Lennox, Rheem, AO Smith, Ariston, Carrier and more!
If you have a standard hot water heater, combi boiler or a high-efficient heating system, our certified HVACR technicians can easily detect any issues and provide a reliable solution for repairing them. If your boiler is old or hard to maintain, we have the expertise and equipment necessary to get your boiler back up and running and give you safe and efficient heating.
Call BOS Plumbing and Drains today if you’re suffering from boiler pressure loss, noises, fault codes or if you’ve noticed a leaking boiler, a hot water boiler leaking around fittings or valves.
Over 20 years of boiler repair service, throughout the GTA, Mississauga, Oakville, Hamilton, Milton, Niagara and Cambridge. Licensed technicians. Honest diagnosis. Before we get going estimates for a project up front. That’s us, the boiler repair near me. Call or Book Online!
Central air conditioner installation on a home with existing ductwork is typically completed in one day. Mini split installation for a single zone takes 3–5 hours. Multi-zone ductless ac installation may require a full day depending on the number of indoor units and complexity of line set routing.
For most central air conditioner installation work involving electrical connections, a permit is required. BOS manages permit requirements as part of our service, keeping you fully code-compliant without the administrative headache.
Home depot ac installation services are typically coordinated through third-party subcontractors. BOS is a direct-service, licensed HVAC and plumbing company with 20+ years of GTA experience and full accountability for every job. You work with us from quote to completion.
Mini splits AC don’t require ductwork and allow room-level temperature control. Central air conditioner installation delivers whole-home cooling through existing ducts from a single system. The right choice depends on your home’s layout, existing infrastructure, and how you want to manage cooling across different spaces.
Sometimes, system components need to be matched properly for efficiency and reliability. Our technicians will assess compatibility between existing indoor components and a new outdoor unit before recommending partial versus full system replacement.
We cover our installations with a workmanship warranty. If an issue develops that’s related to the installation, we return and resolve it at no charge. Call us directly, no third-party warranty service centres, no runaround.
