Commercial boiler - Calgary , AB
Commercial Boiler Repair, Maintenance & Installation in Calgary
When the boiler goes down in a commercial building, tenants don't wait and neither do we. DHL Mechanical provides dedicated commercial boiler service for property managers, building operators, and facility teams across Calgary — with priority emergency dispatch for maintenance contract clients.
Commercial Service at a Glance
Commercial Boiler Services Built for Calgary's Heating Season
Calgary's heating season runs 7+ months. For commercial buildings — condos, offices, retail spaces, warehouses — a boiler failure doesn't just cause discomfort. It triggers tenant complaints, liability concerns, and potential pipe freeze damage that can cost tens of thousands of dollars.
DHL Mechanical provides dedicated commercial boiler service designed to prevent those failures and respond rapidly when they happen. Every service we offer is delivered by technicians who work exclusively on boiler and hydronic heating systems — not general HVAC contractors who treat boilers as an afterthought.
We service all commercial boiler configurations: single units, cascade (multi-boiler) systems, lead-lag setups, and hybrid configurations. Brands include IBC, NTI, Viessmann, Navien, LAARS, Lochinvar, Weil-McLain, and all other commercial-grade manufacturers.
Emergency Repair & Priority Dispatch
After-hours calls go directly to a licensed technician. Maintenance contract clients receive priority dispatch, typically 2–4 hours during business hours. We carry common commercial parts on every truck.
Preventive Maintenance Programs
Scheduled fall and mid-winter visits that include full combustion analysis, heat exchanger cleaning, safety checks, water chemistry testing, and written service reports for your records.
Installation & System Replacement
Full commercial boiler installations — from single-unit replacements to multi-boiler cascade systems for large buildings. Includes engineering, permits, commissioning, and old system disposal.
Combustion Analysis & Safety Inspection
Documented combustion readings, carbon monoxide testing, gas pressure verification, and safety relief valve inspection — all delivered with a formal written report for compliance records.
Water Treatment & Glycol Management
Chemical water treatment, pH testing, glycol concentration checks, and scale inhibitor installation. Essential for preventing corrosion and heat exchanger failure in Calgary's hard water.
Preventive Maintenance That Pays for Itself
A single emergency call-out in the middle of a Calgary cold snap costs more than a full year of preventive maintenance. Our commercial maintenance contracts are designed to prevent breakdowns before they happen, maintain peak efficiency throughout the heating season, and provide documented service records for property management and insurance purposes.
Every maintenance visit follows a standardized 20+ point checklist, and you receive a written service report within 48 hours. Contract clients also receive priority emergency dispatch — your call goes to the front of the queue, 24/7.
| Maintenance Checklist Item | Included |
|---|---|
| Heat exchanger inspection & cleaning | ✓ |
| Burner inspection & adjustment | ✓ |
| Full combustion analysis (documented) | ✓ |
| Condensate trap & drain cleaning | ✓ |
| Water chemistry / glycol test | ✓ |
| Pressure & safety relief valve test | ✓ |
| Control system verification | ✓ |
| Venting & exhaust inspection | ✓ |
| Pump & circulator check | ✓ |
| Written service report (48hr delivery) | ✓ |
| Priority emergency dispatch | ✓ |
Commercial & Multi-Unit Properties We Service
DHL Mechanical provides boiler service for a wide range of commercial and institutional buildings throughout Calgary.
If your building has a boiler, we can service it. Request a site assessment.
Why Commercial Boilers Need a Specialist, Not a Generalist
General HVAC companies handle commercial boilers as one of dozens of services. Their technicians rotate between furnaces, rooftop units, and ductwork — and may see a boiler once a month. At DHL Mechanical, boilers are all we do. That singular focus translates to faster diagnostics, more accurate repairs, and maintenance programs that actually prevent breakdowns rather than just checking boxes.
- Boiler-only technicians — every tech on our team specializes exclusively in boiler and hydronic systems
- Common commercial parts on every truck — IBC, NTI, Viessmann, and other commercial-grade parts in stock
- Written service reports — detailed documentation for property management, insurance, and compliance
- Single point of contact — your property manager gets a direct line to the technician assigned to your building
- Since 1996 — nearly three decades of dedicated boiler experience in Calgary's demanding climate
The Cost of Unplanned Downtime
A commercial boiler failure in -30°C doesn't just mean cold tenants — it means frozen pipes, water damage, liability claims, and emergency repairs that cost 5–10x what preventive maintenance would have cost. Maintenance contracts exist to prevent this scenario.
When to Repair vs. Replace a Commercial Boiler
Not every failing boiler needs replacement, and DHL Mechanical will never recommend replacement if a repair is the smarter investment. However, there are clear indicators that replacement is the right call:
- Annual repair costs exceed 30–40% of the price of a new system
- The boiler is 20+ years old with declining efficiency and increasing service frequency
- The heat exchanger is cracked or corroded beyond economical repair
- Replacement parts are discontinued or require extended lead times
- Energy costs have spiked due to efficiency degradation — modern condensing boilers operate at 95%+ AFUE vs. 80% for aging systems
When replacement is warranted, DHL Mechanical handles the full process: system sizing, engineering, permitting, installation, commissioning, old system disposal, and post-installation service. We also provide guidance on available financing options and rebate programs.
Commercial Boiler Questions
Common questions from Calgary property managers and building operators.
At minimum, commercial boilers require annual maintenance to maintain warranty coverage and safe operation. High-demand systems running continuously through Calgary's 7+ month heating season benefit from semi-annual service — a full maintenance visit in fall before peak season and a mid-winter check in January or February. DHL Mechanical's preventive maintenance contracts include both scheduled visits.
A DHL Mechanical commercial maintenance visit includes heat exchanger inspection and cleaning, burner inspection and adjustment, full combustion analysis with documented readings, condensate trap and drain cleaning, water chemistry testing (pH, glycol concentration), pressure and safety relief valve testing, control system verification, and a written service report delivered within 48 hours for property management records.
Preventive maintenance contract clients receive priority emergency dispatch, typically within 2–4 hours during business hours. After-hours emergency calls are dispatched directly to a licensed technician — not a call centre or answering service. For non-contract emergency calls, we aim for same-day response depending on current volume.
Yes. DHL Mechanical services and installs multi-boiler cascade and lead-lag configurations commonly found in larger commercial buildings, condo complexes, and institutional facilities. We service cascaded systems from IBC, NTI, Viessmann, and other commercial-grade manufacturers. Cascade systems require specialized knowledge for proper sequencing, load balancing, and individual unit diagnostics.
Consider replacement when annual repair costs exceed 30–40% of a new system's cost, the boiler is 20+ years old with declining efficiency, the heat exchanger is cracked or corroded beyond repair, or replacement parts are no longer available. DHL Mechanical provides honest assessments — we will not recommend replacement if a repair is the better investment for your building.
DHL Mechanical provides commercial boiler service for office buildings, retail spaces, multi-unit residential complexes (condos and apartments), warehouses, restaurants, hotels, churches, schools, and institutional facilities throughout Calgary and surrounding areas including Airdrie, Cochrane, Okotoks, and Chestermere.