🚨 Emergency service available — Call 416-881-2720 now
Boiler Services · Hot Water & Steam Systems · TSSA Certified
Boiler Installation, Repair & Service — GTA & Durham
Hot water and steam boiler specialists for older GTA and Durham homes. Installation of high-efficiency condensing boilers, emergency repairs, and annual maintenance — by technicians who understand boiler hydraulics.
✓ TSSA Certified
✓ Authorized Lennox Dealer
✓ Authorized Rinnai Dealer
✓ Since 1995
Boiler Services for Hot Water & Steam Systems
Hot water and steam boilers remain common in older Durham Region and Scarborough homes — particularly pre-1980s construction with cast iron radiators. These systems offer real advantages: radiant comfort, no forced air, no allergen distribution, and a well-maintained boiler that can last 30+ years. But they require technicians who genuinely understand boiler hydraulics, controls, and the specific failure modes of aging hydronic equipment.
Services We Provide
- New boiler installation — High-efficiency condensing boilers (90%+ AFUE) for baseboard and cast iron radiator systems. Full piping, controls, and commissioning.
- Emergency boiler repair — Circulator pump failures, expansion tank problems, zone valve faults, pressure issues, ignition failures, and heat exchanger problems.
- Annual boiler maintenance — Combustion analysis, circulator check, pressure relief valve test, safety controls, and water quality check for closed-loop systems.
- Boiler replacement — End-of-life boiler replacement with updated controls and high-efficiency equipment — including outdoor reset configuration.
Our Process
Diagnosis & assessment
We inspect the boiler, piping, controls, and radiation to understand the full system before recommending repairs or replacement.
Transparent quote
Both repair and replacement options presented with honest cost-benefit analysis, including efficiency savings from upgrading.
Installation or repair
TSSA-certified work, correct piping configuration, and controls setup including outdoor reset.
Commissioning & balancing
Pressure testing, air purging, and zone balancing to ensure even heat across all radiators.
Pricing & Financing
Annual boiler maintenance: $149–$199. Repair service call: $89–$129 + parts. New high-efficiency boiler installation: $5,000–$12,000+ depending on system complexity. Free estimates on new installations.
Why Choose Malek
Expert Boiler Service You Can Trust
Hot Water & Steam Experience
We work on both hydronic hot water systems and steam systems — common in older Oshawa and Scarborough homes.
High-Efficiency Upgrades
We replace aging atmospheric boilers with modern condensing units — significant efficiency gains with new venting and controls.
Annual Maintenance Plans
Boiler maintenance plan members receive priority scheduling and member pricing on all repairs found during service.
TSSA Certified Throughout
Every boiler service call is performed by TSSA-certified technicians — the mandatory Ontario gas licence.
Related Services
Everything Under One Roof
Hydronic Heating
In-floor radiant and baseboard hydronic system design and installation.
Furnace Services
Considering a forced-air upgrade? We install Lennox high-efficiency furnaces.
Common Questions
Frequently Asked Questions
How long does a boiler last?
Well-maintained cast iron boilers can last 30–40 years. Modern high-efficiency condensing boilers typically have a 15–25 year service life with proper annual maintenance.
What's causing the banging from my radiators?
In hot water systems, the most common cause is trapped air — bleed the radiators and purge at the boiler. In steam systems, banging usually indicates condensate not draining properly from failed steam traps or incorrect pipe pitch.
Can I replace my old boiler with a high-efficiency one?
Yes. Modern condensing boilers (90%+ AFUE) offer significant efficiency gains. The installation requires PVC venting and a condensate drain. We handle all of it, including updated controls with outdoor reset.
My radiators heat unevenly — some hot, some cold. Why?
Usually caused by air in the system, a failed zone valve or circulator pump serving a zone, or flow imbalance in the piping. We diagnose which zone or component is at fault.
Need Boiler Service?
Fast response for emergency repairs. Free estimates on boiler replacement. TSSA-certified technicians across the GTA & Durham.
Or call 416-881-2720 — Mon–Fri 8am–6pm, Sat 9am–4pm
Get Your Free Estimate!
No pressure, no obligation. We respond same day.