Tankless is sized by flow rate (GPM) at a required temperature rise (ΔT).

1. Add your simultaneous fixtures

   • Shower ≈ 2.0 GPM (modern head)

   • Sink ≈ 1.0 GPM

   • Washer ≈ 2.0–2.5 GPM

2. Estimate ΔT

   • GTA winter inlet water can be cold, so ΔT to 120°F / 49°C is often 60–75°F (33–42°C).

   • Choose a unit that delivers your target GPM at winter ΔT, not just summer.

Example: Shower (2.0) + sink (1.0) = 3.0 GPM at 70°F ΔT → select a model rated ≥ 3.0 GPM at that ΔT.

1. In-Home Assessment & Options
   We confirm GPM/ΔT sizing, gas or electrical capacity, vent route, condensate drain, and recirculation needs.

2. Permits & Preparation
   We handle permits (where required), schedule the job, and protect work areas.

3. Professional Installation

   • Gas line sizing (often ¾″–1″), regulator checks, or dedicated electric circuits (for electric tankless)

   • Direct/concentric venting (condensing uses PVC/PP; non-condensing typically Category III stainless)

   • Condensate neutralizer & drain/pump (condensing models)

   • Service/Isolation valves and flush ports for easy maintenance

   • Mixing valve (recommended) and code-compliant discharge routing

4. Startup, Commissioning & Training
   Combustion/electrical checks, temperature calibration, fixture tests at flow, app setup (if applicable), and owner walkthrough.

5. Registration, Rebates & Warranty
   We register the unit, submit eligible incentives, and provide all documentation.

• Condensing Gas Tankless (Best efficiency)
  Highest UEF, cooler exhaust (PVC/PP vent), requires condensate neutralizer; ideal for whole-home use.

• Non-Condensing Gas Tankless (Value)
  Lower upfront cost; stainless venting; slightly lower efficiency.

• Electric Tankless
  Compact; may require significant electrical capacity—best for point-of-use or specific scenarios.

• Built-In Recirculation / Buffer Tank
  Reduces “cold-water sandwich,” speeds hot-water delivery, and can pair with a return line or crossover valve.

• Dedicated return loop (best performance)

• Crossover valve at a distant fixture (no return line required)

• Demand-controlled pumps (button or motion-sensor) for efficiency
  We’ll recommend the right option based on plumbing layout and water-saving goals.

GTA water can form scale that reduces flow and efficiency. We include service valves and recommend:

• Annual descaling/flush (more often in very hard water)

• Inlet screens cleaning and flow-sensor service

• Optional scale-reduction cartridge or softener for long heat-exchanger life

• Good: Non-condensing tankless, isolation valves, stainless vent

  • For: Budget upgrades, smaller households

• Better: Condensing tankless (UEF ~0.95–0.96), concentric vent, condensate neutralizer

  • For: Most detached homes; strong efficiency and comfort

• Best: Premium condensing (UEF ~0.97–0.98) with built-in recirc + buffer, Wi-Fi/app controls, scale-control accessory

  • For: Maximum comfort, fast hot water to distant taps, lowest operating cost

(Model availability varies; we quote multiple options.)

• We identify manufacturer, utility, and government incentives for high-efficiency or heat-pump-adjacent programs and handle the paperwork.

• Financing available (on approved credit) to keep upfront costs low.

• Prefer no ownership? See Water Heater Rentals for $0-down options.

1. Area protection & old unit removal

2. Gas/electrical and vent/condensate work to code

3. Service valves and mixing valve setup; leak and pressure tests

4. Commissioning under realistic flows; temperature verification at fixtures

5. Owner orientation, cleanup, warranty & rebate documents provided

• Annual descaling/flush (hard water may need more)

• Clean inlet screens and verify flow sensors

• Test condensate operation and neutralizer media (condensing)

• Check recirc settings/timers to balance comfort and efficiency
  Add our Tankless Water Heater Protection Plan for priority service, repair discounts, and scheduled maintenance.

• Get a Tankless Water Heater
• Tankless Water Heater Repair
• Tankless Water Heater Rebates & Incentives
• Tankless Water Heater Buyer’s Guide

Can a tankless run two showers at once?
Yes—if it’s sized for your winter ΔT. We select a model that delivers your required GPM at the coldest inlet temps.

Do I need a larger gas line?
Often. Many whole-home units need ¾″–1″ gas supply and proper regulator capacity. We verify and include upgrades in your quote.

Can I vent through my old chimney?
Usually no. Tankless systems use direct/concentric venting per manufacturer specs; we route a safe, code-compliant vent.

Will I get hot water instantly?
Heat is instant at the unit, but water still travels the pipe. Recirculation options provide near-instant delivery to distant taps.

Is electric tankless a good idea?
Sometimes—for point-of-use or specific homes with ample panel capacity. We’ll compare whole-home electrical requirements vs. gas.

What maintenance is required?
Annual descaling, screen cleaning, and checks of sensors/condensate. We include service valves to make it quick and clean.