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Boiler Repair & Service

Expert boiler diagnostics, repair, and annual servicing. We fix leaks, pressure issues, pilot light problems, and more. same-day service available.

What's Included

Why Choose Real Deal HVAC

Licensed & Insured

Fully licensed HVAC technicians with comprehensive insurance coverage.

Upfront Pricing

No hidden fees or surprises. You approve the price before we start any work.

Same-Day Service

Fast response times, with same-day service available across Mississauga, Oakville, Etobicoke and Burlington.

Satisfaction Guarantee

We stand behind our work. If you're not satisfied, we'll make it right.

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Fill out the form and we'll get back to you within 24 hours. Or call us directly for immediate help.

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Prefer to talk it through? Call (647) 280-6626 — answered 24/7. Licensed and insured, with the price agreed before any work starts.

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Frequently asked questions

Straight answers to what people actually ask us. Call (647) 280-6626 any hour if yours is not here.

What are the usual reasons a boiler stops heating?

Low system pressure, a failed circulator pump, a stuck zone valve, air trapped in the loop, an ignition or flame-sensing fault, or a control board problem. On older systems an expansion tank that has lost its charge is a frequent culprit.

My radiators are cold at the top but warm at the bottom. Why?

That is usually trapped air in the radiator, which is fixed by bleeding it. If it keeps coming back, air is being drawn into the system somewhere and the cause needs finding rather than repeating the bleed every few weeks.

How often should a boiler be serviced?

Once a year, before the heating season. An annual service checks combustion, the pressure relief valve, the expansion tank, the circulator and the venting, which is also what most manufacturers require to keep a warranty valid.

Do you work on both hot water boilers and combi units?

Yes, along with the pumps, zone valves, controls and venting around them. If the boiler also makes your domestic hot water, that side gets checked too.

Is boiler work regulated?

Yes. Gas-fired boilers fall under the Technical Standards and Safety Authority in Ontario, the same as furnaces and water heaters, and the same licensing and inspection rules apply.

When is a boiler worth replacing rather than repairing?

When the heat exchanger is compromised, when parts are no longer available, or when repeated repairs are approaching the cost of a replacement. We will give you the repair price and an honest view of whether it is money well spent.

Safety and licensing

Gas work in Ontario is regulated. Every gas appliance we touch is handled to the standards set by the province’s safety regulator, and any certificate or licence we hold can be verified through them.

5.0 175 Google reviews

Rated 5.0 on Google across 175 reviews.

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