Looking for a hot water system that can handle Calgary’s freezing winters without running out mid-shower? At Comfort Union, we recommend Navien tankless water heaters, ultra-efficient, space-saving systems that deliver endless hot water on demand. Unlike traditional tanks, these units heat water only when needed, reducing energy waste and lowering your monthly utility bills.
With installation costs typically ranging from $2,500 to $4,500, Navien units are built for long-term performance, even in sub-zero temperatures. Whether you’re replacing an old tank or building a new home, Navien’s advanced technology and Calgary-ready design make it one of the smartest upgrades you can make in 2025.
Top Navien Tankless Water Heater Models for Calgary Homes
When it comes to choosing a tankless water heater in Calgary, not all models perform equally, especially in our cold climate. We install a curated selection of Navien units that balance efficiency, performance, and reliability for Calgary homes. Below are the top models we recommend, each suited to different household sizes, budgets, and installation needs.
1. Navien NPE-A2 Series (Advanced Condensing)
The NPE-A2 is one of the most efficient and feature-rich models in Navien’s lineup. Its integrated recirculation system is especially useful in Calgary’s colder months, reducing water waste and wait times. If you value convenience, efficiency, and long-term savings, this model delivers consistent comfort backed by a solid warranty.
- UEF Rating: Up to 0.95 (high efficiency)
- Built-in ComfortFlow™ Recirculation system for faster hot water access
- Flow Rate: Up to 10.1 GPM – handles simultaneous showers and appliance use
- BTU Input: 15,000–199,900
- Smart Integration: Wi-Fi ready with NaviLink™ remote control capability
- Warranty: 15-year limited on heat exchanger, 5-year parts, 1-year labor
$3,500 – $4,500 (depending on venting, labor, and layout)
Busy families, larger homes, or homeowners needing rapid and consistent hot water delivery
NPE-240A2 – Ideal for 3–4 bathroom homes in Calgary with high water demand and modern lifestyle needs
2. Navien NPE-S2 Series (Standard Condensing)
The NPE-S2 series offers top-tier efficiency without the added cost of built-in recirculation. It’s a solid match for newer homes in Calgary where plumbing runs are shorter and hot water is needed fast but not instantly. With up to 11.2 GPM flow rate and premium energy savings, this unit delivers comfort, capacity, and cost-effectiveness—backed by a strong warranty and Navien’s trusted reliability.
- UEF Rating: Up to 0.96 – one of the highest in its class
- Flow Rate: Up to 11.2 GPM – excellent for simultaneous showers and appliance use
- BTU Input: 15,000–199,900
- Fuel Flexibility: Field-convertible for natural gas or propane
- Compact Design: Wall-mounted to save space
- Warranty: 15-year limited on heat exchanger, 5-year parts, 1-year labor
$3,000 – $4,200
Homes with 2–3 bathrooms that don’t require built-in recirculation but still want high efficiency and strong performance
NPE-240S2 – Ideal for mid-to-large Calgary homes with standard hot water demand and no need for recirculation
3. Navien NHW-AE / AI Series (Non-Condensing)
The NHW series is an excellent choice for older Calgary homes or secondary suites where budget and installation constraints are top concerns. Its simple venting requirements reduce retrofit complexity, and while it’s not as efficient as condensing models, it still provides continuous hot water with lower operating costs than a traditional tank. A reliable choice for efficient upgrades without major plumbing overhauls.
- Flow Rate: Up to 6.6 GPM – enough for 1–2 simultaneous hot water applications
- BTU Input: 18,000–180,000
- Venting: Simple single-vent system makes it easier to retrofit into older homes
- Design: Compact and lightweight for wall-mount installation
- Lower Upfront Cost: More affordable than condensing models
- Warranty: 15-year limited on heat exchanger, 5-year parts, 1-year labor
$2,500 – $3,500
Retrofits, compact utility spaces, or homes where condensing venting isn’t practical or possible
NHW-180AE – Great for basement suites, small bungalows, or homes needing a flexible, low-cost tankless solution
Navien Tankless Installation & Cost Guide for Calgary Homes
Installing a Navien tankless water heater in Calgary typically costs between $2,500 and $4,500, depending on the model, venting setup, and your home’s layout. Many Calgary homeowners may also qualify for rebates through the Canada Greener Homes Grant, offering up to $5,600 when replacing older, less efficient systems.
Frequently Asked Questions (FAQs)
How much does a Navien tankless water heater cost in Calgary?
Installed costs typically range from $2,500 to $4,500 depending on the model (condensing or non-condensing), your home’s layout, venting needs, and whether a recirculation system is included.
What size Navien tankless water heater do I need for my home?
It depends on your household size and hot water usage. A 2–3 bathroom home usually needs a model like the NPE-240A2 or NPE-240S2, which can deliver over 10 GPM, suitable for multiple showers running at once.
Can I install a Navien tankless unit using existing gas lines?
Yes, in many cases. However, a licensed installer will assess whether your current gas line diameter and pressure are sufficient for a high-efficiency unit.
Do Navien tankless water heaters require annual maintenance?
Yes. Annual maintenance is recommended to flush out mineral buildup, clean filters, and ensure long-term performance—especially important in Calgary’s hard water areas.
What venting materials do Navien condensing models use?
Navien condensing models allow for PVC, CPVC, or polypropylene venting, making installation more flexible and cost-effective than traditional metal venting.
Are Navien units eligible for rebates in Calgary?
Yes. Many Navien models qualify for rebates under the Canada Greener Homes Grant, offering up to $5,600 back when replacing an older, less efficient system.
Can Navien units switch between natural gas and propane?
Yes. Most Navien models are field-convertible with an included kit, allowing flexibility if your home uses propane or is located outside of gas service areas.
Final Takeaway
For Calgary homeowners, Navien offers unmatched performance, comfort, and efficiency. Whether you’re upgrading from a traditional tank or planning a new installation, Navien tankless water heaters deliver value over time through lower energy bills and longer lifespan.
Looking for a Navien installation or service in Calgary? Contact Comfort Union today. We’re Calgary’s trusted Navien dealer, offering expert advice, professional installation, and help with available rebates.
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