New Boiler installation Calgary , AB
New Boiler Installation & Replacement in Calgary
A properly sized, properly installed boiler is the difference between a home that's evenly warm all winter and one that struggles to keep up at -30°C. DHL Mechanical designs every installation around a heat-loss calculation specific to your home — not a quick guess from a spec sheet.
Installation at a Glance
Every DHL Mechanical Boiler Installation Includes
When we quote a boiler installation, the price covers everything — not just the unit. There are no hidden add-ons for venting, gas piping, or permits. Here's what comes standard with every install:
- Custom heat-loss calculation — we size the boiler to your home's actual thermal envelope, not a rule-of-thumb BTU guess
- High-efficiency condensing boiler — 95%+ AFUE from IBC, NTI, Viessmann, or Navien
- All venting modifications — PVC or stainless steel, routed to code
- Gas piping — properly sized from meter to unit
- Magnetic dirt filter — (Fernox or Adey) protects the heat exchanger from debris
- Old system removal & disposal — we take the old boiler and tank away
- City of Calgary permits & inspections — filed, scheduled, and handled by us
- Full commissioning & homeowner walkthrough — we test everything, then show you how to operate it
- Manufacturer warranty registration — filed on your behalf at installation
Why Heat-Loss Calculations Matter
An undersized boiler can't keep up at -30°C. An oversized boiler short-cycles, wastes fuel, and wears out faster. The right size is determined by a heat-loss calculation that accounts for:
- Square footage and ceiling height
- Window count, age, and R-value
- Insulation type and thickness
- Calgary's -33°C design temperature
- Domestic hot water demand
This is the single most important step. We do it on every installation, and we never skip it.
Which Boiler System Is Right for Your Home?
The right boiler depends on your home's size, hot water demand, and heating distribution. Here are the three primary options for Calgary homes.
Combi Boiler
- No hot water tank required
- Compact wall-mount design
- 95%+ AFUE efficiency
- One fixture at a time (DHW)
System Boiler + Indirect Tank
- Multiple fixtures simultaneously
- Handles soaker tubs + families
- 95%+ AFUE efficiency
- Handles Calgary cold groundwater
Boiler for In-Floor Heating
- Even heat, zero cold spots
- Multi-zone room control
- Peak efficiency at low water temps
- New construction or retrofit
Not sure which system fits? Call (403) 863-8246 and we'll assess your home. For detailed pricing, see our 2026 Boiler Cost Guide.
How a DHL Mechanical Installation Works
From first call to a working boiler — here's what to expect.
Consultation
We assess your home, discuss your needs, and perform a heat-loss calculation.
Detailed Quote
You receive a written, all-inclusive quote with no hidden fees. Take your time.
Installation
Old system removed. New boiler, venting, gas piping, and filter installed.
Commissioning
Full system startup, combustion analysis, and safety verification.
Walkthrough
We register the warranty and walk you through operating your new system.
When Replacement Makes More Sense Than Repair
Not every boiler needs replacing. A 12-year-old unit with a failed pump is a straightforward repair. But there are clear indicators that replacement is the smarter long-term investment.
- The boiler is 20+ years old — even if it's still running, you're paying 20–30% more in fuel than a modern condensing unit
- Annual repair costs exceed 30–40% of a new system — at that point, repairs are throwing money at a declining asset
- The heat exchanger is cracked or corroded — a heat exchanger replacement often costs more than a new boiler
- Parts are discontinued — sourcing obsolete parts gets more expensive and uncertain each year
- You're converting from a non-condensing to a condensing unit — a new 95%+ AFUE boiler can reduce fuel costs by 20–30% vs. an old 80% unit
DHL Mechanical provides honest assessments. If a repair is the better investment, we'll tell you — and we'll do the repair instead. Learn about our repair services →
Cost of Keeping an Old Boiler
A typical Calgary home with an old 80% AFUE boiler spends roughly $2,200–$2,800/year on natural gas for heating. Upgrading to a 95%+ AFUE condensing boiler saves $400–$700/year in fuel — meaning the boiler upgrade pays for a significant portion of its cost over its 15–20 year lifespan.
- Old non-condensing: ~80% AFUE → 20% fuel waste
- New condensing: 95%+ AFUE → 5% or less waste
- Estimated annual savings: $400–$700
Boiler Installation Questions
The most common questions Calgary homeowners ask before a new boiler installation.
A new boiler typically costs $6,500–$14,000+ installed. Combi boilers run $7,500–$10,500, system boilers with indirect tanks cost $9,000–$14,000+, and radiant boiler systems range from $8,000–$15,000+ depending on zones. All DHL Mechanical quotes include the unit, old system removal, venting, gas piping, magnetic filter, permits, and commissioning.
A like-for-like replacement typically takes 1 day. A system conversion (conventional to combi, or furnace to boiler) usually takes 1.5–2 days. A complete radiant floor system with new boiler in new construction may take 2–5 days depending on zones.
Everything: heat-loss calculation, the boiler unit, removal and disposal of the old system, venting modifications, gas piping, magnetic dirt filter, all City of Calgary permits, full commissioning, warranty registration, and a homeowner walkthrough.
We most commonly install IBC (Canadian-made, excellent cold-climate performance), NTI (compact, high BTU, strong warranty), Viessmann (premium efficiency), and Navien (built-in recirc, great value). We recommend what's best for your application — not what earns us the highest margin. See our brand comparison.
Calgary homeowners may access the Clean Energy Improvement Program (CEIP) for property-tax financing, and the Canada Greener Homes Affordability Program for qualifying households. DHL Mechanical advises on available incentives when quoting your project.
Repair if under 15 years old with an isolated issue. Replace if 20+ years old, repair costs exceed 30–40% of a new system, the heat exchanger is cracked, or parts are discontinued. An old 80% AFUE boiler costs $400–$700/year more in fuel than a new 95%+ unit.
Yes — the City of Calgary requires a mechanical permit for all boiler installations. DHL Mechanical pulls all permits, schedules the inspection, and handles the process. The permit cost is included in every quote.